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;
}
} 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:https://tool.zzvips.com/t/jsonjiexi/
json在线格式化工具:https://tool.zzvips.com/t/jsonformat/
在线excel转json工具:https://tool.zzvips.com/t/excel2json/
json转excel工具:https://tool.zzvips.com/t/json2excel/
在线json压缩/转义工具:https://tool.zzvips.com/t/jsonzip/
希望本文所述对大家java程序设计有所帮助。
原文链接:https://blog.csdn.net/huxiangen/article/details/80433320
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