package com.stylefeng.guns.modular.system.util;
|
|
import java.io.IOException;
|
import java.io.PrintWriter;
|
import java.util.Map;
|
|
import javax.servlet.http.HttpServletRequest;
|
import javax.servlet.http.HttpServletResponse;
|
|
|
import com.alibaba.fastjson.JSONObject;
|
import org.apache.commons.httpclient.HttpClient;
|
import org.apache.commons.httpclient.HttpException;
|
import org.apache.commons.httpclient.SimpleHttpConnectionManager;
|
import org.apache.commons.httpclient.methods.GetMethod;
|
import org.apache.commons.httpclient.methods.PostMethod;
|
public class HttpRequestUtil {
|
|
public static String postRequest(String url, Map<String, String> params) {
|
// 构造HttpClient的实例
|
HttpClient httpClient = new HttpClient();
|
// 创建POST方法的实例
|
PostMethod postMethod = new PostMethod(url);
|
// 设置请求头信息
|
postMethod.setRequestHeader("Connection", "close");
|
postMethod.addRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
|
// 添加参数
|
for (Map.Entry<String, String> entry : params.entrySet()) {
|
postMethod.addParameter(entry.getKey(), entry.getValue());
|
}
|
// 使用系统提供的默认的恢复策略,设置请求重试处理，用的是默认的重试处理：请求三次
|
httpClient.getParams().setBooleanParameter("http.protocol.expect-continue", false);
|
// 接收处理结果
|
String result = null;
|
try {
|
// 执行Http Post请求
|
httpClient.executeMethod(postMethod);
|
// 返回处理结果
|
result = postMethod.getResponseBodyAsString();
|
} catch (HttpException e) {
|
// 发生致命的异常，可能是协议不对或者返回的内容有问题
|
System.out.println("请检查输入的URL!");
|
e.printStackTrace();
|
} catch (IOException e) {
|
// 发生网络异常
|
System.out.println("发生网络异常!");
|
e.printStackTrace();
|
} finally {
|
// 释放链接
|
postMethod.releaseConnection();
|
// 关闭HttpClient实例
|
if (httpClient != null) {
|
((SimpleHttpConnectionManager) httpClient.getHttpConnectionManager()).shutdown();
|
httpClient = null;
|
}
|
}
|
return result;
|
}
|
|
public static String getRequest(String url, Map<String, String> params) {
|
// 构造HttpClient实例
|
HttpClient client = new HttpClient();
|
// 拼接参数
|
String paramStr = "";
|
for (String key : params.keySet()) {
|
paramStr = paramStr + "&" + key + "=" + params.get(key);
|
}
|
paramStr = paramStr.substring(1);
|
// 创建GET方法的实例
|
GetMethod method = new GetMethod(url + "?" + paramStr);
|
// 接收返回结果
|
String result = null;
|
try {
|
// 执行HTTP GET方法请求
|
client.executeMethod(method);
|
// 返回处理结果
|
result = method.getResponseBodyAsString();
|
} catch (HttpException e) {
|
// 发生致命的异常，可能是协议不对或者返回的内容有问题
|
System.out.println("请检查输入的URL!");
|
e.printStackTrace();
|
} catch (IOException e) {
|
// 发生网络异常
|
System.out.println("发生网络异常!");
|
e.printStackTrace();
|
} finally {
|
// 释放链接
|
method.releaseConnection();
|
// 关闭HttpClient实例
|
if (client != null) {
|
((SimpleHttpConnectionManager) client
|
.getHttpConnectionManager()).shutdown();
|
client = null;
|
}
|
}
|
return result;
|
}
|
|
|
/**
|
* 发送网络请求
|
* @param url
|
* @return
|
*/
|
public static String sendNetRequest(String url, Map<String, String> params) {
|
// 构造HttpClient实例
|
HttpClient client = new HttpClient();
|
String paramStr = "";
|
for (String key : params.keySet()) {
|
paramStr = paramStr + "&" + key + "=" + params.get(key);
|
}
|
paramStr = paramStr.substring(1);
|
System.err.println(url + "?" + paramStr);
|
// 创建GET方法的实例
|
GetMethod method = new GetMethod(url + "?" + paramStr);
|
// 接收返回结果
|
String result = null;
|
try {
|
// 执行HTTP GET方法请求
|
client.executeMethod(method);
|
// 返回处理结果
|
result = method.getResponseBodyAsString();
|
} catch (HttpException e) {
|
// 发生致命的异常，可能是协议不对或者返回的内容有问题
|
System.out.println("请检查输入的URL!");
|
e.printStackTrace();
|
} catch (IOException e) {
|
// 发生网络异常
|
System.out.println("发生网络异常!");
|
e.printStackTrace();
|
} finally {
|
// 释放链接
|
method.releaseConnection();
|
// 关闭HttpClient实例
|
if (client != null) {
|
((SimpleHttpConnectionManager) client.getHttpConnectionManager()).shutdown();
|
client = null;
|
}
|
}
|
return result;
|
}
|
|
|
|
/**
|
* jsonp跨域请求数据响应<br/>
|
* 方法名：responsejsonpData<br/>
|
* @author：Mryang<br/>
|
* @createTime：2016年7月31日-下午11:17:31 <br/>
|
* @tel: 15198268054<br/>
|
* @param request
|
* @param response
|
* @param map void<br/>
|
* @exception <br/>
|
* @since 1.0.0
|
*/
|
public void responsejsonpData(HttpServletRequest request, HttpServletResponse response, Map<String, Object> map) {
|
response.setCharacterEncoding("UTF-8");
|
response.setHeader("Content-Type", "text/html;Charset=utf-8");
|
try {
|
PrintWriter writer = response.getWriter();
|
String params = request.getParameter("callback");
|
String json = JSONObject.toJSONString(map);
|
writer.print(params+ "("+json+")");
|
} catch (IOException e) {
|
e.printStackTrace();
|
}
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
}
|
