package com.yjys.malls.modules.works.utils;
import net.sf.json.JSONObject;
import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.Map;
/**
* @Description:
* @Author: wy
* @CreatTime: 2018-11-29 下午 01:45
*/
public class WebService {
public static void main(String[] args) {
Map dept =new HashMap<>();
dept.put("pageNum","1");
dept.put("pageSize","3");
String a=sendPost("http://tea.yanxukj.com/malls/api/getDept",dept);
System.out.println("@@a "+a);
}
/**
* 向服务器接口发送post请求
*
* @param url:请求的接口地址
* @param params:请求参数
* @return 表远程资源的响应结果
*/
public static StringsendPost(String url, Map params) {
//将Map数据转换为JSON字符串
String jsonParams=JSONObject.fromObject(params).toString();
//System.out.println("!@# "+jsonParams);
//PrintWriter out = null;
DataOutputStream out=null;
BufferedReader in =null;
String result ="";
try {
URL realUrl =new URL(url);
//打开和URL之间的连接
URLConnection connect = realUrl.openConnection();
// 设置通用的请求属性
connect.setRequestProperty("accept", "*/*");
connect.setRequestProperty("connection", "Keep-Alive");
connect.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
connect.setRequestProperty("Content-Type","application/json");
// 发送POST请求必须设置如下两行
connect.setDoOutput(true);
connect.setDoInput(true);
// 获取URLConnection对象对应的输出流
//out = new PrintWriter(connect.getOutputStream());
out=new DataOutputStream(connect.getOutputStream());
// 发送请求参数
//out.print(jsonParams);
out.write(jsonParams.getBytes("UTF-8"));//传中文必须
// 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(connect.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块来关闭输出流和输入流
finally{
try{
if(out!=null){
out.close();
}
if(in!=null){
in.close();
}
}
catch(IOException ex){
ex.printStackTrace();
}
}
return result;
}
}
