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java中json-lib-jar包的依赖和使用
目录结构
json-lib-jar及依赖
链接：https://pan.baidu.com/s/1qBt3_UXWIHPJIaWDJBtMjg
提取码：rkz2
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>json-lib-jar包的使用</title>
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/css/bootstrap.min.css">
</head>
<body>
<button class="btn btn-success"> 点我发送ajax请求读取json</button>
<script src="${pageContext.request.contextPath}/js/jquery.min.js"></script>
<script>
$("button").click(function(){
$.get("DoServlet",function(data){
console.log(data);
})
})
</script>
</body>
</html>
简单的一个小按钮，用的是jquery+ajax异步拉数据
效果图
DoServlet代码
package json_demo;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONArray;
public class DoServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
List<String> list = Arrays.asList("{name:'叶红鱼',age:'20',address:'西陵',otherName:'道痴'}");
// 将数据转化为json字符串
String jsonStr = JSONArray.fromObject(list).toString();
// 设置json响应头
response.setContentType("application/json;charset=utf-8");
response.getWriter().print(jsonStr);
}
}