java 后台 post请求 携带参数 远程操作 调用接口

package com.huayu.tizong.matchteam.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

/**
 * 请求接口数据
 * 
 * @author Administrator
 * 
 */
public class httpPostUrl {
        
        /**
         * 
         * @param url
         * @param param  参数 k=v
         * @return
         */
        public static String sendPost(String url, String param) {
                PrintWriter out = null;
                BufferedReader in = null;
                String result = "";
                try {
                        URL realUrl = new URL(url);
                        // 打开和URL之间的连接
                        URLConnection conn = realUrl.openConnection();
                        // 设置通用的请求属性
                        conn.setRequestProperty("accept", "*/*");
                        conn.setRequestProperty("connection", "Keep-Alive");
                        conn.setRequestProperty("user-agent",
                                        "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
                        conn.setRequestProperty("Charsert", "UTF-8");
                        // 发送POST请求必须设置如下两行
                        conn.setDoOutput(true);
                        conn.setDoInput(true);
                        // 获取URLConnection对象对应的输出流
                        out = new PrintWriter(conn.getOutputStream());
                        // 发送请求参数
                        out.print(param);
                        // flush输出流的缓冲
                        out.flush();
                        // 定义BufferedReader输入流来读取URL的响应
                        in = new BufferedReader(
                                        new InputStreamReader(conn.getInputStream(),"utf-8"));
                        String line;
                        while ((line = in.readLine()) != null) {
                                result += line;
                        }
                } catch (Exception e) {
                        System.out.println("发送 POST 请求出现异常！" + e);
                        e.printStackTrace();
                }
                // 使用finally块来关闭输出流、输入流
                finally {
                        try {
                                if (out != null) {
                                        out.close();
                                }
                                if (in != null) {
                                        in.close();
                                }
                        } catch (IOException ex) {
                                ex.printStackTrace();
                        }
                }
                return result;
        }

        /**
         * 数据流post请求
         * 
         * @param urlStr
         * @param xmlInfo
         */
        public static String doPost(String urlStr, String strInfo) {
                String reStr = "";
                try {
                        URL url = new URL(urlStr);
                        URLConnection con = url.openConnection();
                        con.setDoOutput(true);
                        con.setRequestProperty("Pragma:", "no-cache");
                        con.setRequestProperty("Cache-Control", "no-cache");
                        con.setRequestProperty("Content-Type", "text/xml");
                        OutputStreamWriter out = new OutputStreamWriter(
                                        con.getOutputStream());
                        out.write(new String(strInfo.getBytes("utf-8")));
                        out.flush();
                        out.close();
                        BufferedReader br = new BufferedReader(new InputStreamReader(
                                        con.getInputStream(), "utf-8"));
                        String line = "";
                        for (line = br.readLine(); line != null; line = br.readLine()) {
                                reStr += line;
                        }
                } catch (MalformedURLException e) {
                        e.printStackTrace();
                } catch (IOException e) {
                        e.printStackTrace();
                }
                return reStr;
        }
}