接口测试学习 -01

   java编写向接口POST 一个Jason请求，要求 post的方法要单独封装一个类   (有其他类调用post方法，参数最好是json体和链接地址，需要得出返回结果并打印返回信息和http状态码，只打印返回结果和状态码，其他的不能打印出)

import java.io.BufferedReader;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.io.OutputStreamWriter; 
import java.io.InputStream;
import java.io.InputStreamReader;

//import java.net.MalformedURLException;
import net.sf.json.JSONObject;
//import java.io.InputStreamReader;
//import java.io.UnsupportedEncodingException;
//import java.io.BufferedReader;
//import java.io.DataOutputStream;


public class confirmSendJson {
    
     /** 
     * 发送HttpPost请求 
     *  
     * @param strURL 
     *            服务地址 
     * @param params 
     *            json字符串,例如: "{ "id":"12345" }" ;其中属性名必须带双引号<br/> 
     * @return 成功:返回json字符串<br/> 
     */  
    
    final static String addr_url = "http://xxxx.com/v1/api/payRequest";  
    final static String params ="{"channelCode": "01","
    +""platformCode": "03","
    +""tradeNo": "1474878291690","
    +""subject": "打赏","
    +""payAmount": 1,"
    +""notifyUrl": "http://xxxx.com/v1/test/notify","
    +""returnUrl": "http://xxxx.com/v1/test/notify/sync","
    +""expire": 300,"
    +""extra": "hello world","
    +""openId": "oSlbct45e-fTbFJOtZvZjV5gNKBE","
    +""sign": "7BB370F84FD481BC758836BB7919BBEF"}";

    public static String post(String addr_url, String params){
        String result="";
        BufferedReader in = null;
        OutputStreamWriter out=null;

        try {
            //创建连接
            URL url = new URL(addr_url);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setRequestMethod("POST");
            connection.setUseCaches(false);//post不能保存缓存
            connection.setInstanceFollowRedirects(true);
            connection.setRequestProperty("Accept", "application/json"); // 设置接收数据的格式  
            connection.setRequestProperty("Content-Type", "application/json"); // 设置发送数据的格式 

            connection.connect();

            //POST请求
            out = new OutputStreamWriter(  
                    connection.getOutputStream(), "UTF-8"); // utf-8编码  
            out.append(params);  
            out.flush();  
            out.close();  

           Map<String,List<String>> map = connection.getHeaderFields();

           for (String key : map.keySet()){

              System.out.println(key + "------>" +map.get(key));
           }
            
            //读取响应
            in = new BufferedReader(
                    new InputStreamReader(connection.getInputStream()));
            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;
   
    }
    

    
 public static void main(String[] args) {  
        String result=null;
        result= post(addr_url, params); 
        System.out.println(result);  
        
 
 }  
 
}