Java实现后台发送及接收json数据的方法示例_Java教程

Java实现后台发送及接收json数据的方法示例

2021-06-22 12:53huxiangen Java教程

这篇文章主要介绍了Java实现后台发送及接收json数据的方法,结合实例形式分析了java针对json格式数据的传输与操作相关技巧,需要的朋友可以参考下

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;

									    }

									}