java 后台 post请求 携带参数 远程操作 调用接口

Posted 2020-09-21 bug_锋

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;
	}
}