java攻城狮之路(Android篇)--与服务器交互

一、图片查看器和网页源码查看器

在输入地址的是不能输入127.0.0.1 或者是 localhost.
ScrollView :可以看成一个滚轴 可以去包裹很多的控件在里面

练习1(图片查看器)：

package com.shellway.imagelooker;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.http.conn.ConnectTimeoutException;

import android.support.v7.app.ActionBarActivity;
import android.annotation.SuppressLint;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

    private EditText path;
    private ImageView iv;

    @SuppressLint("NewApi")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        path = (EditText) findViewById(R.id.et_path);
        iv = (ImageView) findViewById(R.id.iv_image);
        StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }
    public void onLook(View view){
        String spath = path.getText().toString();
        System.out.println(spath);
        if(spath.equals("")){
            Toast.makeText(this, "输入的地址为空", Toast.LENGTH_SHORT).show();
        }else {
            try {
                URL url = new URL(spath);
                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                conn.setRequestMethod("GET");
                conn.setConnectTimeout(5000);
                
                if(conn.getResponseCode() == 200){
                    InputStream is = conn.getInputStream();
                    Bitmap bm = BitmapFactory.decodeStream(is);
                    if(bm == null){
                        Toast.makeText(this, "获取的图片流为空", Toast.LENGTH_SHORT).show();
                    }else{
                        iv.setImageBitmap(bm);
                    }
                }else{
                    Toast.makeText(this, "输入的路径不存在", Toast.LENGTH_SHORT).show();
            }
                
            } catch (Exception e) {
                e.printStackTrace();
                if(e instanceof MalformedURLException){
                    Toast.makeText(this, "输入的路径格式错误", Toast.LENGTH_SHORT).show();
                }else if(e instanceof ConnectTimeoutException){
                    Toast.makeText(this, "连接超时错误", Toast.LENGTH_SHORT).show();
                }else if(e instanceof IOException){
                    Toast.makeText(this, "获取数据错误", Toast.LENGTH_SHORT).show();
                }else{
                    Toast.makeText(this, "未知错误", Toast.LENGTH_SHORT).show();
                }
            } 
        }
    }
}

MainActivity.java

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.shellway.imagelooker"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />
    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

AndroidManifest.xml

练习2(网页源码查看器)：

package com.shellway.htmllooker;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.http.client.utils.URIUtils;

import android.support.v7.app.ActionBarActivity;
import android.text.TextUtils;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.StrictMode;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.URLUtil;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

    protected static final int CHANGE_UI = 1;
    private EditText et_path;
    private TextView iv;
    private String path;
//    private Handler handler;
    
    @SuppressLint("NewApi")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        et_path = (EditText) findViewById(R.id.et_path);
        iv = (TextView) findViewById(R.id.iv_image);
/*        handler = new Handler(){
            public void handleMessage(Message msg) {
                if(msg.what == CHANGE_UI){
                String s = (String) msg.obj;
                iv.setText(s);
                }
            };
        };*/
        StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }
    public void onLook(View view){
        path = et_path.getText().toString().trim();
        if(TextUtils.isEmpty(path)){
            Toast.makeText(MainActivity.this, "您输入的地址为空", Toast.LENGTH_SHORT).show();
        }else{
        // new Thread(){
        //     public void run() {
                    try {
                        URL url = new URL(path);
                        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                        conn.setRequestMethod("GET");
                        conn.setConnectTimeout(5000);
                        if(conn.getResponseCode()==200){
                            InputStream is = conn.getInputStream();
                            ByteArrayOutputStream bos = new ByteArrayOutputStream();
                            byte[] buffer = new byte[1024];
                            int len=0 ;
                            while((len = is.read(buffer))!=-1){
                                bos.write(buffer, 0, len);
                            }
                            String text =bos.toString();
                            bos.close();
                            is.close();
                        //    Message msg = new Message();
                        //    msg.what = CHANGE_UI;
                        //    msg.obj = text;
                        //    handler.sendMessage(msg);
                            iv.setText(text);
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
        //     };
    //     }.start();
        }
    }
}

MainActivity.java

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.shellway.htmllooker"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />
    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

AndroidManifest.xml

二、网易新闻客户端

1.对抓取的数据进行一个描述，我们用的是xml文件来进行描述，如：
<HeaderNews>
<HeaderNew>
<image>httP://192.168.1.101:8080/web/a.jpg<image>
<title>女子花3万相亲</title>
<content>婚介所向其介绍男友后消失<content>
<count>44跟帖</count>
</HeaderNew>
</HeaderNews>

首先数据是动态的。我们可以用servlet(查询数据库里面的数据) - 然后传递数据通过request(转发)--> jsp 显示

findViewById() 直接使用是在我们的activity的布局里面去查找

注意：流被使用过之后，就不能再次使用。

练习：

首先,模拟一个服务器(创建web工程)：

<?xml version="1.0" encoding="utf-8"?>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<HeaderNews>
<c:forEach items="${headerNews}"  var="headernew">

<HeaderNew>
      <image>${headernew.image}</image>
      <title>${headernew.title}</title>
      <content>${headernew.content}</content>
      <count>${headernew.count}</count>
</HeaderNew>
</c:forEach>
</HeaderNews>

headernewsxml.jsp

package com.shellway.news.domain;

public class HeaderNew {
    private String image;
    private String title;
    private String content;
    private String count;
    public HeaderNew() {
        super();
    }
    public HeaderNew(String image, String title, String content, String count) {
        super();
        this.image = image;
        this.title = title;
        this.content = content;
        this.count = count;
    }
    public String getImage() {
        return image;
    }
    public void setImage(String image) {
        this.image = image;
    }
    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String getContent() {
        return content;
    }
    public void setContent(String content) {
        this.content = content;
    }
    public String getCount() {
        return count;
    }
    public void setCount(String count) {
        this.count = count;
    }
    @Override
    public String toString() {
        return "HeaderNew [image=" + image + ", title=" + title + ", content="
                + content + ", count=" + count + "]";
    }
}

HeaderNew.java

package com.shellway.news.service;

import java.util.ArrayList;
import java.util.List;

import com.shellway.news.domain.HeaderNew;

public class HeaderNewsService {
   private List<HeaderNew> HeaderNews = new ArrayList<HeaderNew>();
    public List<HeaderNew> getHeaderNews(){
        HeaderNews.add(new HeaderNew("http://192.168.1.101:80/web/a.jpg","女子花3万相亲","婚介所向其介绍男友1后消失","44跟帖"));
        HeaderNews.add(new HeaderNew("http://192.168.1.101:80/web/b.jpg","女子花4万相亲","婚介所向其介绍男友2后消失","12跟帖"));
        HeaderNews.add(new HeaderNew("http://192.168.1.101:80/web/c.jpg","女子花5万相亲","婚介所向其介绍男友3后消失","22跟帖"));
        HeaderNews.add(new HeaderNew("http://192.168.1.101:80/web/d.jpg","女子花6万相亲","婚介所向其介绍男友4后消失","32跟帖"));
        HeaderNews.add(new HeaderNew("http://192.168.1.101:80/web/e.jpg","女子花7万相亲","婚介所向其介绍男友5后消失","24跟帖"));
        HeaderNews.add(new HeaderNew("http://192.168.1.101:80/web/a.jpg","女子花8万相亲","婚介所向其介绍男友6后消失","15跟帖"));
        return HeaderNews;
    }
}

HeaderNewsService.java

package com.shellway.news.servlet;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.catalina.connector.Request;

import com.shellway.news.domain.HeaderNew;
import com.shellway.news.service.HeaderNewsService;

public class HeaderNewsServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    public HeaderNewsServlet() {
        super();
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
          HeaderNewsService service = new HeaderNewsService();
          List<HeaderNew> HeaderNews = service.getHeaderNews();
          request.setAttribute("headerNews", HeaderNews);
          request.getRequestDispatcher("/WEB-INF/page/headernewsxml.jsp").forward(request, response);
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    }
}

HeaderNewsServlet.java

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>web</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <description></description>
    <display-name>HeaderNewsServlet</display-name>
    <servlet-name>HeaderNewsServlet</servlet-name>
    <servlet-class>com.shellway.news.servlet.HeaderNewsServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>HeaderNewsServlet</servlet-name>
    <url-pattern>/HeaderNewsServlet</url-pattern>
  </servlet-mapping>
</web-app>

web.xml

然后,创建一个Android客户端工程(News)

package com.shellway.news.domain;

public class HeaderNew {
    private String image;
    private String title;
    private String content;
    private String count;
    public HeaderNew() {
        super();
    }
    public HeaderNew(String image, String title, String content, String count) {
        super();
        this.image = image;
        this.title = title;
        this.content = content;
        this.count = count;
    }
    public String getImage() {
        return image;
    }
    public void setImage(String image) {
        this.image = image;
    }
    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String getContent() {
        return content;
    }
    public void setContent(String content) {
        this.content = content;
    }
    public String getCount() {
        return count;
    }
    public void setCount(String count) {
        this.count = count;
    }
    @Override
    public String toString() {
        return "HeaderNew [image=" + image + ", title=" + title + ", content="
                + content + ", count=" + count + "]";
    }
}

HeaderNew.java

package com.shellway.news;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import org.xmlpull.v1.XmlPullParser;
import android.content.Context;
import android.os.Environment;
import android.util.Xml;

import com.shellway.news.domain.HeaderNew;

public class HeaderNewsService {
    //得到所有的头条新闻
    public List<HeaderNew> getHeaderNews(Context context) throws Exception{
        String path = context.getResources().getString(R.string.serverurl);
        URL url = new URL(path);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        conn.setConnectTimeout(5000);
        if(conn.getResponseCode()==200){
            InputStream is = conn.getInputStream();
            return parserHeaderNews(is);
        }
        return null;
    }
    
    //解析流为新闻集合
    private List<HeaderNew> parserHeaderNews(InputStream is) throws Exception {
        List<HeaderNew> headerNews = null;
        HeaderNew headerNew = null;
        //1 得到解析器
        XmlPullParser parser = Xml.newPullParser();
        //设值解析流编码
        parser.setInput(is, "utf-8");
        //得到解析事件
        int eventType = parser.getEventType();
        while(eventType!=XmlPullParser.END_DOCUMENT){
            switch (eventType) {
            case XmlPullParser.START_TAG:
                if("HeaderNews".equals(parser.getName())){
                    headerNews = new ArrayList<HeaderNew>(); 
                }else if("HeaderNew".equals(parser.getName())){
                    headerNew = new HeaderNew();
                }else if("image".equals(parser.getName())){
                    headerNew.setImage(parser.nextText());
                }else if("title".equals(parser.getName())){
                    headerNew.setTitle(parser.nextText());
                }else if("content".equals(parser.getName())){
                    headerNew.setContent(parser.nextText());
                }else if("count".equals(parser.getName())){
                    headerNew.setCount(parser.nextText());
                }
                break;
            case XmlPullParser.END_TAG:
                if ("HeaderNew".equals(parser.getName())) {
                    headerNews.add(headerNew);
                    headerNew = null;
                }
               break;
            default:
                break;
            }
            eventType = parser.next();
        }
        return headerNews;
    }
    
    //得到文件
    public File getImage(String path) throws Exception{
        URL url = new URL(path);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        conn.setConnectTimeout(5000);
        Properties pro = new Properties();
        if(conn.getResponseCode()==200){
            InputStream is = conn.getInputStream();
            //缓存图片
            String name = path.substring(path.lastIndexOf("/")+1);
            File file = new File(Environment.getExternalStorageDirectory(),name);
            FileOutputStream fos = new FileOutputStream(file);
            byte[] buffer = new byte[1024];
            int len = 0;
            while ((len = is.read(buffer))!=-1) {
                fos.write(buffer, 0, len);
            }
            fos.close();
            return file;
        }
        return null;
    }
}

HeaderNewsService.java

package com.shellway.news;

import java.io.File;
import java.util.List;

import com.shellway.news.domain.HeaderNew;

import android.support.v7.app.ActionBarActivity;
import android.annotation.SuppressLint;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.StrictMode;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {
    private ListView lv_news;
    private HeaderNewsService service;
    private List<HeaderNew> headernews;
    private LayoutInflater mInflater;
    @SuppressLint("NewApi")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        service = new HeaderNewsService();
        mInflater = LayoutInflater.from(this);
        lv_news = (ListView) findViewById(R.id.lv_news);
        //下面两行是允许在主线程中执行联网这一耗时操作
        StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
        try {
            headernews = service.getHeaderNews(this);
            //设值数据
            lv_news.setAdapter(new MyBaseAdapter());
        } catch (Exception e) {
            e.printStackTrace();
            Toast.makeText(this, "获取新闻失败", Toast.LENGTH_SHORT).show();
        }
        
    }
    private class MyBaseAdapter extends BaseAdapter{

        @Override
        public int getCount() {
            return headernews.size();
        }

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            return 0;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            //View item = View.inflate(getApplicationContext(), R.layout.item, null);
            //加载布局
             View item = mInflater.inflate(R.layout.item, null);
            //得到控件
             ImageView iv = (ImageView) item.findViewById(R.id.iv_image);
             TextView title = (TextView) item.findViewById(R.id.tv_title);
             TextView content = (TextView) item.findViewById(R.id.tv_content);
             TextView count = (TextView) item.findViewById(R.id.tv_count);
            //得到数据
             HeaderNew hw = headernews.get(position);
            //绑定数据
             File imagefile;
            try {
                //图片是否有缓存   现在图片应该保存sdcard
                String path = hw.getImage();
                String name = path.substring(path.lastIndexOf("/")+1);
                File file = new File(Environment.getExternalStorageDirectory(),name);
                if (!file.exists()) {
                     imagefile = service.getImage(hw.getImage());
                    if(imagefile!=null){
                        iv.setImageURI(Uri.fromFile(imagefile));
                    }
                }else {
                    iv.setImageURI(Uri.fromFile(file));
                }
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
             title.setText(hw.getTitle());
             content.setText(hw.getContent());
             count.setText(hw.getCount());
            return item;
        }
    }
}

MainActivity.java

package com.shellway.news.test;

import java.util.List;

import com.shellway.news.HeaderNewsService;
import com.shellway.news.domain.HeaderNew;

import android.test.AndroidTestCase;
import android.util.Log;

public class HeaderNewsTest extends AndroidTestCase {
    public void testGetHeaderNews() throws Exception{
        HeaderNewsService service = new HeaderNewsService();
        List<HeaderNew>  headerNews = service.getHeaderNews(getContext());
        for(HeaderNew headerNew:headerNews){
            Log.i("i", headerNew.toString());
        }
    }
}

HeaderNewsTest.java

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.shellway.news"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />
        <instrumentation
        android:targetPackage="com.shellway.news"
        android:name="android.test.InstrumentationTestRunner" />
    
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
     <uses-library android:name="android.test.runner" />
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <ListView android:id="@+id/lv_news"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
         />

</LinearLayout>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#EEEDEC"
    android:layout_margin="5dp"
     >
    <ImageView 
        android:id="@+id/iv_image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" 
        android:src="@drawable/default1"
        android:layout_margin="5dp"
        />
    <TextView 
        android:id="@+id/tv_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@id/iv_image"
        android:textSize="22sp"
        android:textColor="@android:color/black"
        android:text="小三小四"
        />
    <TextView 
        android:id="@+id/tv_content"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/tv_title"
        android:layout_toRightOf="@id/iv_image"
        android:textSize="18sp"
        android:text="小五小六"
        />
    <TextView 
        android:id="@+id/tv_count"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/tv_content"
        android:layout_alignParentRight="true"
        android:textSize="18sp"
        android:text="44跟帖"
        />

</RelativeLayout>

item.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="serverurl">http://192.168.1.101:80/web/HeaderNewsServlet</string>
</resources>

values下的常量配置文件config.xml

效果图：

方式二：利用json实现数据的获取,json是一个轻量级的数组：
格式：[{image:"httP://192.168.1.101:8080/web/a.jpg",title:"...",content:"...",count:"..."}

服务器端增加一个servlet(HeaderNewsJsonServlet)：

package com.shellway.news.servlet;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.shellway.news.domain.HeaderNew;
import com.shellway.news.service.HeaderNewsService;

public class HeaderNewsJsonServlet extends HttpServlet {
    
    private static final long serialVersionUID = 1L;
    
    public HeaderNewsJsonServlet() {
        super();
    }
    
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
           HeaderNewsService headerNewsService = new HeaderNewsService();
           List<HeaderNew> headerNews = headerNewsService.getHeaderNews();
           StringBuilder sb = new StringBuilder("[");
           for (HeaderNew headerNew : headerNews) {
            sb.append("{");
            sb.append("image:").append("\"").append(headerNew.getImage()).append("\"").append(",");
            sb.append("title:").append("\"").append(headerNew.getTitle()).append("\"").append(",");
            sb.append("content:").append("\"").append(headerNew.getContent()).append("\"").append(",");
            sb.append("count:").append("\"").append(headerNew.getCount()).append("\"");
            sb.append("}");
            sb.append(",");
        }
           sb.deleteCharAt(sb.length()-1);
           sb.append("]");
           request.setAttribute("json", sb);
           request.getRequestDispatcher("/WEB-INF/page/headernewsjson.jsp").forward(request, response);
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }
}

HeaderNewsJsonServlet.java

在Android客户断中增加(HeaderNewsJsonService)：

package com.shellway.news;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONObject;

import android.content.Context;

import com.shellway.news.domain.HeaderNew;

public class HeaderNewsJsonService {
    List<HeaderNew> headerNews = new ArrayList<HeaderNew>();
    public List<HeaderNew> getHeaderNewsFromJson(Context context) throws Exception{
        String path = context.getResources().getString(R.string.serverjsonurl);
            URL url = new URL(path);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(5000);
            if(conn.getResponseCode()==200){
                InputStream is = conn.getInputStream();
                ByteArrayOutputStream bos = new ByteArrayOutputStream();
                byte[] buffer = new byte[1024];
                int len = 0;
                while((len = is.read(buffer)) != -1){
                    bos.write(buffer, 0, len);
                }
                String s = bos.toString();
                bos.close();
                is.close();
                JSONArray jsonArray = new JSONArray(s);
                for (int i = 0; i < jsonArray.length(); i++) {
                    JSONObject jsonObject = jsonArray.getJSONObject(i);
                    HeaderNew headerNew = new HeaderNew();
                    headerNew.setImage(jsonObject.getString("image"));
                    headerNew.setTitle(jsonObject.getString("title"));
                    headerNew.setContent(jsonObject.getString("content"));
                    headerNew.setCount(jsonObject.getString("count"));
                    headerNews.add(headerNew);
                }
            }
        return headerNews;
    }
}

HeaderNewsJsonService.java

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="serverurl">http://192.168.1.101:80/web/HeaderNewsServlet</string>
    <string name="serverjsonurl">http://192.168.1.101:80/web/HeaderNewsJsonServlet</string>
</resources>

config.xml

 

三、以get请求和以post请求往服务器提交数据，通过httpClient提交数据、服务器端文件上传

1、get请求：(把要提交的数据直接添加到路径的后面)
缺点：由于服务器对请求路径的长度是有限制的。最大不能超过4k,截取数据导致数据不完整。

练习：(以get请求数据提交到服务器，并且实现统一的编码)

服务器端：

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>login</title>
</head>
<body>
  <form action="http://192.168.1.101:80/LoginForWeb/LoginServlet" method="get"> 
                          用户名  ：<input type="text" name="username"><br/>
                          密&nbsp;&nbsp;&nbsp;&nbsp;码：    <input type="password" name="password"><br/>
       <input type="submit" value="登录">
  </form>
</body>
</html>

index.jsp

package com.shellway.login.servlet;

import java.io.IOException;
import java.net.URLEncoder;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    public LoginServlet() {
        super();
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
         String name = request.getParameter("username");
       //  String name1 = new String(name.getBytes("iso-8859-1"),"utf-8"); 这一行使用过滤器实现
         String password = request.getParameter("password");
         System.out.println("name:"+name+", password:"+password);
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
         doGet(request, response);
    }
}

LoginServlet.java

package com.shellway.login.filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

public class EncodingSerlvetRequestFilter implements Filter {

    public EncodingSerlvetRequestFilter() {
    }

    public void destroy() {
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) request;
        String method = req.getMethod();
        if (method.equals("GET")) {
            EncodingHttpServletRequestWrapper warpper = new EncodingHttpServletRequestWrapper(req);
            chain.doFilter(warpper, response);
        }else{
            chain.doFilter(request, response);
        }
    }

    public void init(FilterConfig fConfig) throws ServletException {
    }
}

EncodingSerlvetRequestFilter.java

package com.shellway.login.filter;

import java.io.UnsupportedEncodingException;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;

public class EncodingHttpServletRequestWrapper extends HttpServletRequestWrapper {
    private HttpServletRequest request;
    
    public EncodingHttpServletRequestWrapper(HttpServletRequest request) {
        super(request);
        this.request = request;
    }
    
    @Override
    public String getParameter(String name) {
        String value = request.getParameter(name);
        if (value != null) {
            String nname;
            try {
                nname = new String(value.getBytes("iso-8859-1"),"utf-8");
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                throw new RuntimeException("请输入正确的字符编码集名称");
            }
            return nname;
        }
        return super.getParameter(name);
    }
}

EncodingHttpServletRequestWrapper.java

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>LoginForWeb</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <description></description>
    <display-name>LoginServlet</display-name>
    <servlet-name>LoginServlet</servlet-name>
    <servlet-class>com.shellway.login.servlet.LoginServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>LoginServlet</servlet-name>
    <url-pattern>/LoginServlet</url-pattern>
  </servlet-mapping>
  <filter>
    <display-name>SerlvetRequestFilter</display-name>
    <filter-name>SerlvetRequestFilter</filter-name>
    <filter-class>com.shellway.login.filter.EncodingSerlvetRequestFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>SerlvetRequestFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

web.xml

Android客户端：

package com.example.login;

import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;

import android.support.v7.app.ActionBarActivity;
import android.text.TextUtils;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

    private EditText et_username;
    private EditText et_password;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        et_username = (EditText) findViewById(R.id.et_username);
        et_password = (EditText) findViewById(R.id.et_password);
    }
    public void login(View view) throws Exception{
        String username = et_username.getText().toString();
        String password = et_password.getText().toString();
        if (TextUtils.isEmpty(username)||TextUtils.isEmpty(password)) {
            Toast.makeText(this, "用户名和密码不能为空", Toast.LENGTH_SHORT);
        }else{
            String path = getApplicationContext().getResources().getString(R.string.requesturl);
            StringBuilder sb = new StringBuilder();
            try {
                sb.append(path).append("?").append("username=").append(URLEncoder.encode(username, "utf-8"));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                throw new RuntimeException("请输入正确的编码集");
            }
            sb.append("&").append("password=").append(password);
            String reqpath = sb.toString();
            URL url = new URL(reqpath);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(5000);
            if (conn.getResponseCode() == 200 ) {
                Toast.makeText(getApplicationContext(), "登录成功", Toast.LENGTH_SHORT).show();
            }else{
                Toast.makeText(getApplicationContext(), "登录失败", Toast.LENGTH_SHORT).show();
            }
        }
    }
}

MainActivity

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
     >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="用户名" />
    <EditText 
        android:id="@+id/et_username"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="请输入用户名"
        />
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="密   码" />
    <EditText 
        android:id="@+id/et_password"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="textPassword"
        android:hint="请输入密码"
        />
    <Button 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="login"
        android:text="登录"
        />
    

</LinearLayout>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
     <string name="requesturl">http://192.168.1.101:80/LoginForWeb/LoginServlet</string>
</resources>

config.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.login"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />
   <uses-permission android:name="android.permission.INTERNET"/>
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

AndroidManifest.xml

效果图：

 

2、post请求：
android系统引入了一个第三方的框架 HttpClient，他就是对http协议的一个封装
文件上传：我们使用三方开源框架upload
在android端我们也使用HttpClient来实现文件的上传：HttpClient的版本必须在3.0之上。

练习(1、普通的post请求 2、利用HttpClient实现get、post请求 3、文件上传)：

package com.shellway.login.activity;

import com.shellway.login.activity.R;
import com.shellway.login.service.LoginService;

import android.support.v7.app.ActionBarActivity;
import android.text.TextUtils;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {
    LoginService service ;
    private EditText et_username;
    private EditText et_password;
    private EditText et_filename;

    @SuppressLint("NewApi")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        service = new LoginService();
        et_username = (EditText) findViewById(R.id.et_username);
        et_password = (EditText) findViewById(R.id.et_password);
        et_filename = (EditText) findViewById(R.id.et_file);
        StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }
    public void login(View view){
        String username = et_username.getText().toString();
        String password = et_password.getText().toString();
        String filename = et_filename.getText().toString();
        if (TextUtils.isEmpty(username)||TextUtils.isEmpty(password)) {
            Toast.makeText(this, "用户名和密码不能为空", Toast.LENGTH_SHORT).show();
        }else{
            String path = this.getResources().getString(R.string.requesturl);
            
            try {
            //    boolean result = service.loginByGet(path, username, password);
            //    boolean result = service.loginByPost(path, username, password);
            //    boolean result = service.loginHttpClientByGet(path, username, password);
            //  boolean result = service.loginHttpClientByPost(path, username, password);
                boolean result = service.fileUpload(path, username, password, filename);
                
                if (result) {
                    Toast.makeText(this, "登录成功", Toast.LENGTH_SHORT).show();
                }else{
                    Toast.makeText(this, "登录失败", Toast.LENGTH_SHORT).show();
                }
            } catch (Exception e) {
                e.printStackTrace();
                Toast.makeText(this, "登录失败", Toast.LENGTH_SHORT).show();
            }
        }
    }
}

MainActivity.java

package com.shellway.login.service;

import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.multipart.FilePart;
import org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity;
import org.apache.commons.httpclient.methods.multipart.Part;
import org.apache.commons.httpclient.methods.multipart.StringPart;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

public class LoginService {
   /**
    * 普通的以GET方式与服务器进行交互
    * @param path 服务器连接路径
    * @param username 用户名
    * @param password 用户密码
    * @return
    * @throws Exception
    * @throws IOException
    */
   public boolean loginByGet(String path,String username,String password) {
        
        StringBuilder sb = new StringBuilder(path);
        try {
            sb.append("?").append("username=").append(URLEncoder.encode(username, "utf-8"));
            sb.append("&").append("password=").append(password);
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            throw new RuntimeException("请输入正确的编码集");
        }
        String reqpath = sb.toString();
        System.out.println(reqpath);
        URL url;
        HttpURLConnection conn;
        try {
            url = new URL(reqpath);
            conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(5000);
            if (conn.getResponseCode() == 200 ) {
                return true;
            }
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException("连接网络失败");
        }
        return false;
   }
   /**
    * 普通的以POST方式与服务器进行交互
    * @param path 服务器连接路径
    * @param username 用户名
    * @param password 用户密码
    * @return
    * @throws Exception
    * @throws IOException
    */
   public boolean loginByPost(String path,String username,String password) throws Exception {
        
            StringBuilder sb = new StringBuilder();
            sb.append("username=").append(URLEncoder.encode(username,"utf-8")).append("&");
            sb.append("password=").append(password);
            byte[] entity = sb.toString().getBytes();
        
            URL url = new URL(path);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            
            conn.setRequestMethod("POST");
            conn.setConnectTimeout(5000);
            //设置实体参数
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            conn.setRequestProperty("Content-Length", entity.length+"");
            conn.setDoOutput(true);
            OutputStream os = conn.getOutputStream();
            os.write(entity);
            if (conn.getResponseCode() == 200 ) {
                return true;
            }
        return false;
    }
   /**
    * 通过第三方HttpClient来实现以GET方式与服务器进行连接
    * @param path 服务器连接路径
    * @param username 用户名
    * @param password 用户密码
    * @return
    * @throws Exception
    * @throws IOException
    */
   public boolean loginHttpClientByGet(String path,String username, String password) throws Exception, IOException{
       //拼请求路径
       StringBuilder sb = new StringBuilder(path);
       sb.append("?");
       sb.append("username=").append(URLEncoder.encode(username,"utf-8")).append("&");
       sb.append("password=").append(password);
       
       //1、得到浏览器
       HttpClient httpClient = new DefaultHttpClient();
       //2、指定请求方式
       HttpGet httpGet = new HttpGet(sb.toString());
       //3、执行请求
       HttpResponse response = httpClient.execute(httpGet);
       //4、得到响应码
       int code = response.getStatusLine().getStatusCode();
       
       if (code==200) {
        return true;
         }
       return false;
    }
   /**
    * 通过第三方HttpClient来实现以POST方式与服务器进行连接
    * @param path 服务器连接路径
    * @param username 用户名
    * @param password 用户密码
    * @return
    * @throws Exception
    * @throws IOException
    */
   public boolean loginHttpClientByPost(String path,String username, String password) throws Exception, IOException{
       //1、得到浏览器
       HttpClient httpClient = new DefaultHttpClient();
       //2、指定请求方式
       HttpPost httpPost = new HttpPost(path);
       //3、设置实体参数
       List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>();
       nameValuePair.add(new BasicNameValuePair("username",username));
       nameValuePair.add(new BasicNameValuePair("password",password));
       //4、构建一个实体，并初始化参数
       UrlEncodedFormEntity entity = new UrlEncodedFormEntity(nameValuePair);
       //5、把实体数据设置到请求对象
       httpPost.setEntity(entity);
       //6、执行请求
       HttpResponse response = httpClient.execute(httpPost);
       //7、得到状态码
       int code = response.getStatusLine().getStatusCode();
       
       if (code==200) {
           return true;
       }
       return false;
   }
   /**
    * 通过第三方HttpClient来实现以POST方式的文件上传
    * @param path 服务器连接路径
    * @param username 用户名
    * @param password 用户密码
    * @param filename 客户端的上传文件(包含路径)
    * @return
    * @throws Exception
    * @throws IOException
    */
   public boolean fileUpload(String path,String username,String password,String filename) throws Exception, IOException{
       //1、获得浏览器
       org.apache.commons.httpclient.HttpClient httpClient = new org.apache.commons.httpclient.HttpClient();
       //2、确定请求方式
       PostMethod postMethod = new PostMethod(path);
       //3、确定请求的参数
       Part[] parts = new Part[]{new StringPart("username", username),
                                 new StringPart("password", password),
                                 new FilePart("file", new File(filename))};
       //4、构建实体
       MultipartRequestEntity entity = new MultipartRequestEntity(parts, postMethod.getParams());
       //5、设置请求实体
       postMethod.setRequestEntity(entity);
       //6、执行请求
       int responseCode = httpClient.executeMethod(postMethod);
       //7、得到响应码
       if(responseCode == 200){
           return true;
       }
       return false;
   }
}

LoginService.java

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
     >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="用户名" />
    <EditText 
        android:id="@+id/et_username"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="请输入用户名"
        />
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="密   码" />
    <EditText 
        android:id="@+id/et_password"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="textPassword"
        android:hint="请输入密码"
        />
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="上传文件" />
    <EditText 
        android:id="@+id/et_file"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="请输入文件路径"
        />
    <Button 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="login"
        android:text="登录"
        />

</LinearLayout>

activity.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.shellway.login.activity"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />
   <uses-permission android:name="android.permission.INTERNET"/>
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
   <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.shellway.login.activity.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

AndroidManifest.xml

结果图：

 

3、电话号码归属地查询：
我们使用android server(webservice)
webservice就相当于网络上的api
手机号码归属地查询官网：http://www.webxml.com.cn/zh_cn/index.aspx

package com.shellway.addressqurey;

import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import com.shellway.service.QueryService;

import android.support.v7.app.ActionBarActivity;
import android.text.TextUtils;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

    private EditText et_number;
    private TextView tv_info;
    private QueryService service;

    @SuppressLint("NewApi")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        service = new QueryService();
        et_number = (EditText) findViewById(R.id.et_number);
        tv_info = (TextView) findViewById(R.id.tv_info);
        StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }
    
    public void query(View view) {
        String number = et_number.getText().toString();
        if (TextUtils.isEmpty(number)) {
            Toast.makeText(this, "电话号码不能为空", Toast.LENGTH_SHORT).show();
        }else{
            String path = "http://webservice.webxml.com.cn/WebServices/MobileCodeWS.asmx"; 
            try {
                String contentXML = service.reqXML();
                String content = contentXML.replace("string", number);
                byte[] length = content.getBytes();
                URL url = new URL(path);
                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                conn.setConnectTimeout(5000);
                conn.setRequestMethod("POST");
                conn.setRequestProperty("Content-Type","application/soap+xml; charset=utf-8");
                conn.setRequestProperty("Content-Length", length.length +"");
                conn.getDoOutput();
                OutputStream os = conn.getOutputStream();
                os.write(length);
                if (conn.getResponseCode()==200) {
                    InputStream is = conn.getInputStream();
                    String result = service.getNumber(is);
                    if (result!=null) {
                        tv_info.setText(result);
                    }
                    Toast.makeText(this, "查询成功", Toast.LENGTH_SHORT).show();
                }
            }catch (Exception e) {
                e.printStackTrace();
                Toast.makeText(this, "查询失败", Toast.LENGTH_SHORT).show();
            }
        }
    }
}

MainActivity.java

package com.shellway.service;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import org.xmlpull.v1.XmlPullParser;
import android.util.Xml;

//手机号码归属地查询官网：http://www.webxml.com.cn/zh_cn/index.aspx
public class QueryService {
    /**得到需要向服务器发送的信息
    POST /WebServices/MobileCodeWS.asmx HTTP/1.1
    Host: webservice.webxml.com.cn
    Content-Type: application/soap+xml; charset=utf-8
    Content-Length: length
    
    <?xml version="1.0" encoding="utf-8"?>
    <soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
      <soap12:Body>
        <getMobileCodeInfo xmlns="http://WebXml.com.cn/">
          <mobileCode>string</mobileCode>
          <userID>string</userID>
        </getMobileCodeInfo>
      </soap12:Body>
    </soap12:Envelope>
     */
    public String reqXML() throws Exception{
        //加载需要发送的内容信息
        InputStream is = this.getClass().getClassLoader().getResourceAsStream("request.xml");
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len = 0;
        while((len = is.read(buffer)) != -1){
            bos.write(buffer, 0, len);
        }
        bos.close();
        is.close();
        String reqContent = bos.toString();
        return reqContent;
    }
    /**从服务器发回的输入流中解析出里面我们需要的内容信息
    HTTP/1.1 200 OK
    Content-Type: application/soap+xml; charset=utf-8
    Content-Length: length
    
    <?xml version="1.0" encoding="utf-8"?>
    <soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
      <soap12:Body>
        <getMobileCodeInfoResponse xmlns="http://WebXml.com.cn/">
          <getMobileCodeInfoResult>string</getMobileCodeInfoResult>
        </getMobileCodeInfoResponse>
      </soap12:Body>
    </soap12:Envelope>
     */
    public String getNumber(InputStream is) throws Exception{
        //得到解析器
        XmlPullParser parser = Xml.newPullParser();
        //设置解析器
        parser.setInput(is, "utf-8");
        //得到事件类型
        int eventType = parser.getEventType();
        //开始解析
        while(eventType != XmlPullParser.END_DOCUMENT ){
            switch (eventType) {
            case XmlPullParser.START_TAG:
                if ("getMobileCodeInfoResult".equals(parser.getName())){
                    return parser.nextText();
                }
                break;
            default:
                break;
            }
            eventType = parser.next();
        }
        return null;
    }
}

QueryService.java

<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
  <soap12:Body>
    <getMobileCodeInfo xmlns="http://WebXml.com.cn/">
      <mobileCode>string</mobileCode>
      <userID></userID>
    </getMobileCodeInfo>
  </soap12:Body>
</soap12:Envelope>

request.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
     >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="电话号码" 
        />
    <EditText 
        android:id="@+id/et_number"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="请输入要查询的电话号码"
        />
    <Button 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="query"
        android:text="查询"
        />
    <TextView 
        android:id="@+id/tv_info"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="查询信息"
        />
</LinearLayout>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.shellway.addressqurey"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />
    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

AndroidManifest.xml

结果截图：

总结：

Bitmap BitmapFactory
ScrollView

Http : URL HttpURLConnection conn 联网权限

xml
json

http get /post

HttpClient

文件上传

 

注意啦：本Android系列复习笔记后面会继续更新。。。。。。