封装的http的doPost请求和doGet请求
1.maven依赖:
org.apache.commons
commons-lang3
3.4
commons-logging
commons-logging
1.1.3
org.apache.httpcomponents
httpclient
4.2.1
org.apache.httpcomponents
httpcore
4.2.1
log4j
log4j
1.2.17
/**
* @文件名称: HttpUtil.java
* @描述: TODO
* @作者： wuwh
* @时间：2018年4月9日 上午11:08:27
* @版本：V1.0
*/
package com.skiff.www;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URI;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
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;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.apache.log4j.Logger;
/**
* @类功能说明： 封装的http的doPost()和doGet()方法
* 需要依赖的jar包:
* commons-lang3-3.4.jar
* commons-logging-1.2.jar
* httpclient-4.3.5.jar
* httpcore-4.4.1.jar
* log4j-1.2.17.jar
* @作者： wuwh
* @创建时间：2018年4月9日 上午11:08:27
* @版本：V1.0
*/
public class HttpUtil {
private static Logger logger = Logger.getLogger(HttpUtil.class);
/**
* 方法功能说明： http的doGet请求
* @参数： @param url
* @参数： @param map
* @参数： @return
* @return String
* @throws
*/
public static String doGet(String url,Map map) {
String params = HttpUtil.formatUrlMap(map, false, false);
//拼接成的带参数的url
url = url+"?"+params;
try {
HttpClient client = new DefaultHttpClient();
//发送get请求
HttpGet request = new HttpGet(url);
HttpResponse response = client.execute(request);
/**请求发送成功，并得到响应**/
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
/**读取服务器返回过来的json字符串数据**/
String strResult = EntityUtils.toString(response.getEntity());
return strResult;
}
}
catch (IOException e) {
logger.error("HttpUtil.doGet():出错了",e);
}
return null;
}
/**
* post请求(用于key-value格式的参数)
* @param url
* @param params
* @return
*/
public static String doPost(String url, Map params){
BufferedReader in = null;
try {
// 定义HttpClient
HttpClient client = new DefaultHttpClient();
// 实例化HTTP方法
HttpPost request = new HttpPost();
request.setURI(new URI(url));
//设置参数
List nvps = new ArrayList();
for (Iterator iter = params.keySet().iterator(); iter.hasNext();) {
String name = (String) iter.next();
String value = String.valueOf(params.get(name));
nvps.add(new BasicNameValuePair(name, value));
//System.out.println(name +"-"+value);
}
request.setEntity(new UrlEncodedFormEntity(nvps,HTTP.UTF_8));
HttpResponse response = client.execute(request);
int code = response.getStatusLine().getStatusCode();
if(code == 200){ //请求成功
in = new BufferedReader(new InputStreamReader(response.getEntity()
.getContent(),"utf-8"));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
return sb.toString();
}
else{ //
logger.error("HttpUtil.doPost():状态码："+ code);
return null;
}
}
catch(Exception e){
logger.error("HttpUtil.doPost():出错了",e);
return null;
}
}
/**
*
* 方法用途: 对所有传入参数按照字段名的Unicode码从小到大排序（字典序），并且生成url参数串
* 实现步骤:
*
* @param paraMap 要排序的Map对象
* @param urlEncode 是否需要URLENCODE
* @param keyToLower 是否需要将Key转换为全小写
* true:key转化成小写，false:不转化
* @return
*/
public static String formatUrlMap(Map paraMap, boolean urlEncode, boolean keyToLower)
{
String buff = "";
Map tmpMap = paraMap;
try
{
List> infoIds = new ArrayList>(tmpMap.entrySet());
// 对所有传入参数按照字段名的 ASCII 码从小到大排序（字典序）
Collections.sort(infoIds, new Comparator>()
{
@Override
public int compare(Map.Entry o1, Map.Entry o2)
{
return (o1.getKey()).toString().compareTo(o2.getKey());
}
});
// 构造URL 键值对的格式
StringBuilder buf = new StringBuilder();
for (Map.Entry item : infoIds)
{
//StringUtils类需要依赖commons-lang3.jar包
if (StringUtils.isNotBlank(item.getKey()))
{
String key = item.getKey();
String val = item.getValue();
if (urlEncode)
{
val = URLEncoder.encode(val, "utf-8");
}
if (keyToLower)
{
buf.append(key.toLowerCase() + "=" + val);
} else
{
buf.append(key + "=" + val);
}
buf.append("&");
}
}
buff = buf.toString();
if (buff.isEmpty() == false)
{
buff = buff.substring(0, buff.length() - 1);
}
} catch (Exception e) {
logger.error("HttpUtil.formatUrlMap():出错了",e);
return null;
}
return buff;
}
}
3.调用代码:
/**
* @文件名称: HttpUtilTest.java
* @描述: TODO
* @作者： wuwh
* @时间：2018年4月9日 上午11:28:00
* @版本：V1.0
*/
package com.skiff.www;
import java.util.HashMap;
import java.util.Map;
/**
* @类功能说明：
* @作者： wuwh
* @创建时间：2018年4月9日 上午11:28:00
* @版本：V1.0
*/
public class HttpUtilTest {
public static void main1(String[] args) {
Map map = new HashMap<>();
map.put("token", "XTIeQIE7wg4bGMF4fAbi");
map.put("openId", "");
map.put("mobilePhone", "15011222345");
map.put("id", "47");
String url = "http://120.78.190.109:8087/app/scenic/detail";
String result = HttpUtil.doGet(url,map);
System.out.println(result);
}
public static void main(String[] args) {
String url = "http://120.78.190.109:8087/app/scenic/detail";
Map map = new HashMap<>();
map.put("token", "XTIeQIE7wg4bGMF4fAbi");
map.put("openId", "");
map.put("mobilePhone", "15011222345");
map.put("id", "47");
String result = null;
try {
result = HttpUtil.doPost(url, map);
} catch (Exception e) {
e.printStackTrace();
}
System.out.println(result);
}
}