与Java Servlet中的json对象分开获取值 [英] get value separately from json object in java servlet

问题描述

这是我的javascript代码，用于将json对象发送到servlet

this is my javascript code to send json object to servlet

username = "Nash";
password = "619here";
type = "all";
data = '{ "username": "' + username + '", "password": "' + password + '", "type": "' + type + '" }';
request = JSON.parse(data);

$.getJSON(url, request, function (response) {
    $("#result").append("<h1>Success</h1>");
    $.each(response.vehicle, function (no, vehicle) {

        $.each(vehicle, function (key, value) {

            $("#result").append("<h2>" + key + " : " + value + "</h2>");

        });

        $("#result").append("<br>");
    });

})

我想从java servlet读取json对象并分别获取数据.像这样

I want read json object from java servlet and get data separately. like this

String username = username from json object
String password = password from json object
String type = type from json object

我正在使用json-lib-2.4-jdk15.jar 请帮助我.

I'm using json-lib-2.4-jdk15.jar please help me..

推荐答案

在您的servlet中，在do[Get,Post]()方法中执行以下操作

In your servlet, do the following in the do[Get,Post]() method

JSONObject jsonObject = JSONObject.fromObject( request.getQueryString() );  

String username= jsonObject.get( "username" );  
String password= jsonObject.get( "password" ); 
String type= jsonObject.get( "type" ); 

您还需要从JS中删除以下行.

You also need the remove the following line from your JS.

request = JSON.parse(data);

这篇关于与Java Servlet中的json对象分开获取值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！