android实用代码

android实用代码

今天晚上写了测试类，虽然说达不到什么效果。但是能给大家一些实用的代码。

让我看看代码的：

package com.smart.net.utils;



import java.io.ByteArrayOutputStream;

import java.io.DataOutputStream;

import java.io.File;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.URL;

import java.net.URLEncoder;

import java.util.Map;





public class NetTool {

	

	/**

	 * byte[] data=param.getBytes(); 以后要注意，发送数据接收数据，都要用字节数组去接收它

	 * 

	 * 

	 * Content-Type 指action entype="multipart/x-"

	 * */

	public static InputStream sendPostRequest(String uriPath,

			Map<String, String> params, String encoding) throws Exception {

		// String param="id=67&name"+URLEncoder.encode("老梁","UTF-8");//要发送的数据

		StringBuilder sb = new StringBuilder();

		// 进行封装

		for (Map.Entry<String, String> entry : params.entrySet()) {

			sb.append(entry.getKey()).append("=")

					.append(URLEncoder.encode(entry.getValue(), encoding));

			sb.append('&');



		}



		sb.deleteCharAt(sb.length() - 1);



		byte[] data = sb.toString().getBytes();

		URL url = new URL(uriPath);

		HttpURLConnection conn = (HttpURLConnection) url.openConnection();

		conn.setConnectTimeout(6 * 1000);

		conn.setDoOutput(true);// 发送POST至服务器

		conn.setUseCaches(false);

		conn.setRequestMethod("POST");

		conn.setRequestProperty("Connection", "Keep-Alive");

		conn.setRequestProperty("Charset", "UTF-8");

		conn.setRequestProperty("Content-Length", String.valueOf(data.length));

		conn.setRequestProperty("Content-Type",

				"application/x-www-form-urlencoded");

		DataOutputStream dataOutStream = new DataOutputStream(

				conn.getOutputStream());// 得到输出流

		dataOutStream.write(data);

		dataOutStream.flush();

		dataOutStream.close();



		System.out.println(conn.getResponseCode());



		if (conn.getResponseCode() == 200) {

			return conn.getInputStream();

		}

		return null;

	}

	

	

	/**

	 * 

	 * 

	 * */

	

	public static String getTextContent(InputStream inStream,String encoding) throws Exception {

			byte[] data=readStream(inStream);

			return new String(data,encoding);

	

	}

	/**

	 * 获取URL路径指定的内容

	 * 

	 * 

	 * 获得指定内容

	 * */

	

	public static String getTextContent2(String path,String encoding) throws Exception {

		URL url = new URL(path);

		HttpURLConnection conn = (HttpURLConnection) url.openConnection();

		conn.setRequestMethod("GET");

		conn.setConnectTimeout(6 * 1000);

		// 别超过10秒。

		System.out.println(conn.getResponseCode());

		if(conn.getResponseCode()==200){

			InputStream inputStream=conn.getInputStream();

			byte[] data=readStream(inputStream);

			return new String(data,encoding);

		}

		return null;

	}

	/**

	 * 直接可以得到文本与流的数据

	 * */

	public static InputStream getContent(String uriPath) throws Exception {

		URL url = new URL(uriPath);

		HttpURLConnection conn = (HttpURLConnection) url.openConnection();

		conn.setRequestMethod("GET");

		conn.setConnectTimeout(6 * 1000);

		// 别超过10秒。

		System.out.println(conn.getResponseCode());

		if(conn.getResponseCode()==200){

			return conn.getInputStream();

		}

		return null;

	}

	

//	/**

//	 * 直接可以得到文本与流的数据

//	 * */

	public static InputStream getContentImputStream(String path,String encoding) throws Exception {

		URL url = new URL(path);

		HttpURLConnection conn = (HttpURLConnection) url.openConnection();

		conn.setRequestMethod("GET");

		conn.setConnectTimeout(6 * 1000);

		// 别超过10秒。

		System.out.println(conn.getResponseCode());

		if(conn.getResponseCode()==200){

			return conn.getInputStream();

		}

		return null;

	}

/**

 * 获取指定路径，的数据。

 * 

 * **/

	public static byte[] getImage(String urlpath) throws Exception {

		URL url = new URL(urlpath);

		HttpURLConnection conn = (HttpURLConnection) url.openConnection();

		conn.setRequestMethod("GET");

		conn.setConnectTimeout(6 * 1000);

		// 别超过10秒。

		if(conn.getResponseCode()==200){

			InputStream inputStream=conn.getInputStream();

			return readStream(inputStream);

		}

		return null;

	}

	

	/**

	 * 读取数据 

	 * 输入流

	 * 

	 * */

	public static byte[] readStream(InputStream inStream) throws Exception {

		ByteArrayOutputStream outstream=new ByteArrayOutputStream();

		byte[] buffer=new byte[1024];

		int len=-1;

		while((len=inStream.read(buffer)) !=-1){

			outstream.write(buffer, 0, len);

		}

		outstream.close();

		inStream.close();

		

	return outstream.toByteArray();

}

	



	

	

}

package com.smart.activity;



import java.io.File;

import java.io.FileInputStream;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;



import org.apache.http.HttpResponse;

import org.apache.http.NameValuePair;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.message.BasicNameValuePair;

import org.apache.http.protocol.HTTP;



import android.test.AndroidTestCase;

import android.util.Log;



import com.smart.net.utils.FormFile;

import com.smart.net.utils.HttpRequester;

import com.smart.net.utils.NetTool;



/**

 * 如何使用大数据发送

 * */

public class PostParamTest extends AndroidTestCase {

	

	

	/***

	 * 本代码报错，原因为数据类型不对，18 向Internet上传文件-1.avi  38：38分

	 * 

	 * 

	 * */

	private final String TAG = "PostParamTest";

/***

 * 上专文件，

 * 要有四部份数据

 * 名称

 * 内容类型

 * 表单字段名称

 * 类型

 * 发送文件及文本请求参数

 * 

 * 面试上专100M

 * 文件读成数组，然后写上传上去

 *上传到网络流里面去， 

 * */

	

	//发送文件及文本请求参数

	public void testSendPostFileparams() throws Exception{

		Map<String,String> params=new HashMap<String,String>();

		params.put("method", "save");

		params.put("id", "988");

		params.put("name", "老梁");

		FileInputStream inStream=new FileInputStream(new File("/sdcard/smart.xml"));

//		byte[] data=NetTool.readStream(inStream);

//		inStream.close();

		FormFile file=new FormFile("smart.xml",inStream,"file","test/xml");

		

		//这行代码出现报错

//		HttpRequester.post("www.baidu.com",params,file);

		

		

//		HttpRequester.post("", params, null);

	}



	/**

	 * 利用

	 * （资源包）httpcomponents-asyncclient-4.0根据包下面的内容显示，

	 * pairms.add(new BasicNameValuePair("id", "988"));//服务器端

		pairms.add(new BasicNameValuePair("name", "老梁"));

		pairms.add(new BasicNameValuePair("method", "save"));

	 * 两种做方法

	 * */

	

	//通过HhttpClien发送Post请求

	public void testSendPostParamFromHttpClient() throws Exception {

		HttpPost httpPost = new HttpPost("");//请求参数，指服务器地址。

		List<NameValuePair> pairms = new ArrayList<NameValuePair>();//参娄

		pairms.add(new BasicNameValuePair("id", "988"));//服务器端

		pairms.add(new BasicNameValuePair("name", "老梁"));

		pairms.add(new BasicNameValuePair("method", "save"));

		//代表数据部分

		httpPost.setEntity(new UrlEncodedFormEntity(pairms, HTTP.UTF_8));

		DefaultHttpClient httpclient = new DefaultHttpClient();

		HttpResponse response = httpclient.execute(httpPost);

		response.getEntity().getContent();

		// Log.i(TAG, result);

	}



	// 读取服务器信息

//自定义发送Post请求

	public void testSendPostParam() throws Exception {

		// 这里放的服务器地址，我们可以把JAVA写的项目眼布起来，一样都可以使用。



		String path = "http:www.baidu.com";

		Map<String, String> params = new HashMap<String, String>();

		params.put("methos", "save");

		params.put("id", "29832");

		params.put("name", "老梁");

		String result = NetTool.getTextContent(NetTool.sendPostRequest(path,params,"UTF-8"), "UTF-8");

		Log.i(TAG, result);

	}

}

package com.smart.activity;



import java.io.ByteArrayInputStream;

import java.io.File;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.io.OutputStreamWriter;



import android.os.Environment;

import android.test.AndroidTestCase;

import android.util.Log;



import com.smart.domain.Resource;

import com.smart.net.utils.NetTool;

import com.smart.net.utils.SAXResourceService;



public class GetXMLTest extends AndroidTestCase {

	private static final String TAG = "GetXMLTest";



	public void testGetXML() throws Exception {

		// 如果参数是中文，必须进行Url编码

		String path = "http://211.143.108.6/wap/ResCatService?act=pic&s=h";

//		String xml = NetTool.getTextContent(NetTool.getContent(path), "UTF-8");

		String xml = NetTool.getTextContent2(path, "UTF-8");

		FileOutputStream outStream=new FileOutputStream(new File(Environment.getExternalStorageDirectory(),"test.xml"));

		OutputStreamWriter writer=new OutputStreamWriter(outStream,"UTF-8");

		writer.write(xml);

		writer.flush();//一定写进这个方法，要不然，写到内容里面就会没有写入文本

		outStream.close();

//		Log.i(TAG, xml);



		

	}

	

	//这种性能会差一点

	public void testGetXMLAndParser() throws Exception {

		// 如果参数是中文，必须进行URI编码

		String path = "http://211.143.108.6/wap/ResCatService?act=pic&s=h";

		String xml = NetTool.getTextContent(NetTool.getContent(path), "UTF-8");

		InputStream inStream=new ByteArrayInputStream(xml.getBytes());

		Resource resource=SAXResourceService.readXml(inStream);

		Log.i(TAG, resource.toString());//打印出来XML文件的资源

		

	}

	/**

	 * 

	 * 

	 * */

//	public void testGetXMLAndParset() throws Exception{

//		String path="";

//		String xml=Net

//	}

	

	//这种调用方法效果相对来讲会好一点

	public void testGetXMLAndParser2() throws Exception {

		// 如果参数是中文，必须进行URI编码

		String path = "http://211.143.108.6/wap/ResCatService?act=pic&s=h";

		InputStream inStream = NetTool.getContent(path);//

//		InputStream inStream=new ByteArrayInputStream(xml.getBytes());

		if(inStream!=null){

			Resource resource=SAXResourceService.readXml(inStream);

			Log.i(TAG, resource.toString());//打印出来XML文件的资源

		}else{

			Log.i(TAG, "----------->ERROR");

		}

		

		

	}

}

标签: android实用代码