Java实现后台发送及接收json数据的方法示例

本文实例讲述了Java实现后台发送及接收json数据的方法。分享给大家供大家参考,具体如下:

本篇博客试用于编写java后台接口以及两个项目之间的接口对接功能;

具体的内容如下:

1.java后台给指定接口发送json数据

package com.utils;

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.net.HttpURLConnection;

import java.net.URL;

import net.sf.json.JSONObject;

public class testOne {

public static void main(String[] args) {

JSONObject jsobj1 = new JSONObject();

JSONObject jsobj2 = new JSONObject();

jsobj2.put("deviceID", "112");

jsobj2.put("channel", "channel");

jsobj2.put("state", "0");

jsobj1.put("item", jsobj2);

jsobj1.put("requestCommand", "control");

post(jsobj1,"http://192.168.3.4:8080/HSDC/test/authentication");

}

public static String post(JSONObject json,String path) {

String result="";

try {

HttpClient client=new DefaultHttpClient();

HttpPost post=new HttpPost(url);

post.setHeader("Content-Type", "appliction/json");

post.addHeader("Authorization", "Basic YWRtaW46");

StringEntity s=new StringEntity(json.toString(), "utf-8");

s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "appliction/json"));

post.setEntity(s);

HttpResponse httpResponse=client.execute(post);

InputStream in=httpResponse.getEntity().getContent();

BufferedReader br=new BufferedReader(new InputStreamReader(in, "utf-8"));

StringBuilder strber=new StringBuilder();

String line=null;

while ((line=br.readLine())!=null) {

strber.append(line+"\n");

}

in.close();

result=strber.toString();

if(httpResponse.getStatusLine().getStatusCode()!=HttpStatus.SC_OK){

result="服务器异常";

}

} catch (Exception e) {

System.out.println("请求异常");

throw new RuntimeException(e);

}

System.out.println("result=="+result);

return result;

}

}

2.java后台接收json数据

package com.controller;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.UnsupportedEncodingException;

import java.util.HashMap;

import java.util.Map;

import org.springframework.http.MediaType;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

import javax.servlet.http.HttpServletRequest;

@RestController

@RequestMapping("test")

public class TestConttroller{

@Resource

protected HttpServletRequest request;

@RequestMapping(value="authentication",produces = MediaType.APPLICATION_JSON_VALUE,method = RequestMethod.POST)

public Map<String,Object> getString() throws UnsupportedEncodingException, IOException{

System.out.println("进入=====================");

//后台接收

InputStreamReader reader=new InputStreamReader(request.getInputStream(),"UTF-8");

char [] buff=new char[1024];

int length=0;

while((length=reader.read(buff))!=-1){

String x=new String(buff,0,length);

System.out.println(x);

}

//响应

Map<String,Object> jsonObject = new HashMap<String, Object>(); //创建Json对象

jsonObject.put("username", "张三"); //设置Json对象的属性

jsonObject.put("password", "123456");

return jsonObject;

}

}

运行testOne之后将json数据发送到authentication接口,接收的数据如图:

testOne中main方法返回的数据如图:

至此java后台发送及接收json数据代码也就完成了

PS:关于json操作,这里再为大家推荐几款比较实用的json在线工具供大家参考使用:

在线JSON代码检验、检验、美化、格式化工具:

http://tools.jb51.net/code/json

JSON在线格式化工具:

http://tools.jb51.net/code/jsonformat

在线XML/JSON互相转换工具:

以上是 Java实现后台发送及接收json数据的方法示例 的全部内容, 来源链接: utcz.com/z/356294.html

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