Rookie Learning Spring--springmvc Note version gets the JSON string on the server side and parses

I. Overview.

SPRINGMVC A JSON string that is passed to the client on the server and turns the JSON string into a JSON object and obtains its property values, which are often used in the project.

second, the code demonstration.

The jar package that needs to be added.

2.1 Web. Xml.

<?xml version= "1.0" encoding= "UTF-8"? ><web-app xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance" xmlns= "Http://xmlns.jcp.org/xml/ns/javaee" xsi:schemalocation= "Http://xmlns.jcp.org/xml/ns/javaee/http Xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd "id=" webapp_id "version=" 3.1 "><filter><filter-name> Encodingfilter</filter-name><filter-class>org.springframework.web.filter.characterencodingfilter </filter-class><init-param><param-name>encoding</param-name><param-value>utf-8 </param-value></init-param></filter><filter-mapping><filter-name>encodingfilter </filter-name><url-pattern>/*</url-pattern></filter-mapping><servlet>< Servlet-name>springmvc</servlet-name><servlet-class> org.springframework.web.servlet.dispatcherservlet</servlet-class><load-on-startup>1</ Load-on-startup></servlet><servlet-mapping><servlet-name>springmvc</servlet-name><url-pattern>*.spring</url-pattern></servlet-mapping>< Welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list></web-app >

2.2springmvc-servlet.xml.

<?xml version= "1.0" encoding= "UTF-8"? ><beans xmlns= "Http://www.springframework.org/schema/beans" xmlns: Mvc= "Http://www.springframework.org/schema/mvc" xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance" xmlns:p= " http://www.springframework.org/schema/p "xmlns:context=" Http://www.springframework.org/schema/context "xsi: schemalocation= "        Http://www.springframework.org/schema/beans         http://www.springframework.org/schema/ Beans/spring-beans-3.0.xsd        http://www.springframework.org/schema/context/         http Www.springframework.org/schema/context/spring-context-3.0.xsd          Http://www.springframework.org/schema/mvc         http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd "><context:component-scan base-package=" Com.gaowei.JSON "/><mvc:annotation-driven/></beans>

2.3 jsp file.

<%@ page language= "java" contenttype= "text/html; Charset=utf-8 "pageencoding=" UTF-8 "%><! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd" >
  

  

  

  
2.4getjsonstring.java.

  

  
Package Com.gaowei.json;import Net.sf.json.jsonobject;import Org.springframework.stereotype.controller;import Org.springframework.web.bind.annotation.requestmapping;import Org.springframework.web.bind.annotation.RequestParam; @Controllerpublic class Getjsonstring {@RequestMapping (value = "getjsonstring") public string getjsonstring (@RequestParam ("jsonstring") string jsonstring) {Jsonobject object= Jsonobject.fromobject (jsonstring); System.out.println (Object.get ("username")); System.out.println (Object.get ("password")); return "test.jsp";}}
  

  

  

  
2.5.

  


 

Iii. Summary

The interaction between page and Contorller layer avoids using JSON to pass value to the backstage, this method can let us better implement interface layer and Contorller interaction.

Rookie Learning Spring--springmvc Note version gets the JSON string on the server side and parses