JSon_零基础_002_将List类型数组转换为JSon格式的对象字符串,返回给界面

将List类型数组转换为JSon格式的对象字符串,返回给界面

 

所需要导入的包:

JSon_零基础_002_将List类型数组转换为JSon格式的对象字符串,返回给界面

 

编写bean:

package com.west.webcourse.po;



/**

 * 第01步:编写bean类,

 * 下一步com.west.webcourse.servlet.JavaBeanToJOSNString.java

 */

public class PersonInfoPo {

    private String name;

    private int age;

    private String sex;

    

    public PersonInfoPo(){}

    

    public int getAge() {

        return age;

    }



    public void setAge(int age) {

        this.age = age;

    }



    public String getSex() {

        return sex;

    }



    public void setSex(String sex) {

        this.sex = sex;

    }





    public String getName() {

        return name;

    }



    public void setName(String name) {

        this.name = name;

    }

    

}

 

编写servlet:

package com.west.webcourse.servlet;



import java.io.IOException;

import java.io.PrintWriter;



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 JavaBeanToJOSNString extends HttpServlet {



    /** 第03步:重写doGet()方法,下一步:web.xml */

    @Override

    protected void doGet(HttpServletRequest request,

            HttpServletResponse response) throws ServletException, IOException {

        response.setContentType("text/html;charset=utf-8");

        PrintWriter out = response.getWriter();

        System.out.println("转换");

        out.print("转换后的JSON字符串:");

        /** 向浏览器发送JSon格式的字符串 */

        out.print(getSomeOneJSONString());

        out.flush();

        out.close();

    }



    /** 第02步:创建JSon格式字符串转换方法 */

    public String getSomeOneJSONString() {

        boolean[] boolArray = new boolean[] { true, false, true };

        JSONArray somesOneJsonArray = JSONArray.fromObject(boolArray);

        System.out

                .println("com.west.webcourse.servlet.JavaBeanToJOSNString.java::"

                        + somesOneJsonArray);

        return somesOneJsonArray.toString();

    }

}

 

配置:web.xml:

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 

    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    <display-name></display-name>

    <!-- 第04步:配置servlet,下一步:personinfo.jsp -->

    <servlet>

        <description>This</description>

        <display-name>This</display-name>

        <servlet-name>JavaBeanToJOSNString</servlet-name>

        <servlet-class>com.west.webcourse.servlet.SomeOneJsonString</servlet-class>

    </servlet>

    <servlet-mapping>

        <servlet-name>JavaBeanToJOSNString</servlet-name>

        <url-pattern>/javaBeanToJOSNString</url-pattern>

    </servlet-mapping>



    <welcome-file-list>

        <welcome-file>personinfo.jsp</welcome-file>

    </welcome-file-list>

</web-app>

 

编写界面:personinfo.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<%

    String path = request.getContextPath();

    String basePath = request.getScheme() + "://"

            + request.getServerName() + ":" + request.getServerPort()

            + path + "/";

%>



<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<base href="<%=basePath%>">



<title>My JSP 'personinfo.jsp' starting page</title>



<meta http-equiv="pragma" content="no-cache">

<meta http-equiv="cache-control" content="no-cache">

<meta http-equiv="expires" content="0">

<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

<meta http-equiv="description" content="This is my page">

<!--

    <link rel="stylesheet" type="text/css" href="styles.css">

    -->



</head>



<body>

    <!-- 第05步:编写界面 -->

    动态获得当前项目的ContextPath所对应的目录:${pageContext.request.contextPath}

    <br>

    <a href="javaBeanToJOSNString">向servlet发送请求</a>

    <br>

</body>

</html>

 

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