Note-based spring MVC (required jar package, Web. XML configuration, Spring file configuration, @Controller, @RequestMapping, @RequestParam, model, El Value)

1. Add jar

2. Web. XML configuration:

<?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 ">
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:Springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
3.springmvc.xml Configuration

<?

XML version= "1.0" encoding= "UTF-8"?>
<beans xmlns= "Http://www.springframework.org/schema/beans"
Xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance"
Xmlns:mvc= "Http://www.springframework.org/schema/mvc"
Xmlns:context= "Http://www.springframework.org/schema/context"
Xmlns:aop= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"
xmlns:tx= "Http://www.springframework.org/schema/tx"
Xsi:schemalocation= "Http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
Http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-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/AOP
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
Http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<!--note-driven
<mvc:annotation-driven/>
<!--components Scan--
<context:component-scan base-package= "Cn.itcast.springmvc.controller" ></context:component-scan>

<!--Configure Internal Resource View Resolver--
<bean class= "Org.springframework.web.servlet.view.InternalResourceViewResolver" >
<property name= "prefix" value= "/web-inf/jsp/" ></property>
<property name= "suffix" value= ". JSP" ></property>
</bean>
</beans>

4. Entity Bean

Package cn.itcast.springmvc.domain;

public class User {

private String name;
Private String address;
Private Integer age;
Private String Tel;

Public String GetName () {
return name;
}

public void SetName (String name) {
System.out.println ("The value of name is being injected by the SetName method:" + name);
THIS.name = name;
}

Public String getaddress () {
return address;
}

public void setaddress (String address) {
this.address = address;
}

Public Integer Getage () {
return age;
}

public void Setage (Integer age) {
This.age = age;
}

Public String Gettel () {
return Tel;
}

public void Settel (String tel) {
This.tel = Tel;
}

@Override
Public String toString () {
Return ' {name: ' + name + ', Address: ' + address + ', Age: ' + age '
+ ", Tel:" + Tel + "}";
}

}

5, write HomeController, code such as the following:

Package Cn.itcast.springmvc.controller;

Import Java.util.Map;

Import Javax.servlet.http.HttpServletRequest;

Import Org.springframework.stereotype.Controller;
Import org.springframework.web.bind.annotation.RequestMapping;
Import Org.springframework.web.bind.annotation.RequestMethod;
Import Org.springframework.web.bind.annotation.RequestParam;

Import Cn.itcast.springmvc.domain.User;

/**
* @brief Iaccountdao.java Learn Spring annotation method
* @attention
* @author coating rights
* @date 2014-5-18
* @note begin modify NULL
*/
@Controller//Add annotations
@RequestMapping (value = "Home")//root path. Some namespaces that resemble Strut2
public class HomeController {

/**
* Sub-path, indicating that only get commits are supported
* @param req can get the number of references by passing HttpServletRequest
* @param name indicates where the connection is: xxx?name=
* @param u assume URL? There are too many later, to get the number of references. Can write this parameter directly to the user
* @param model: Defines a map object that can be passed to a JSP page in this way
*
* @attention URL address can be: Http://localhost:8081/SpringMVC_02/home/hello
* NAME=TOTO&AMP;ADDRESS=HAIDIAN&AMP;AGE=24&AMP;TEL=136XXX
* The number of parameters obtained is: Running the Hello method Name:toto User: {name:toto,address:haidian,age:24,tel:136xxx}
* @return
*/
@RequestMapping (value= "/hello", Method=requestmethod.get)
Public String Hello (httpservletrequest req,
@RequestParam (value = "Name")
String name, User u, map<string, object> model) {
String name = Req.getparameter ("name");
System.out.println ("Running Hello Method Name:" + name);
System.out.println ("User:" + u);
Req.setattribute ("msg", "Hello" + name);
Model.put ("msg", "Hello" + name);
return "Hello";//Logical name
}

/**
* \brief Definition Method hi
*
* @return
* @attention URL where to access the address by/home/hi
* @author coating rights
* @date 2014-5-18
* @note begin modify by null
*/
@RequestMapping (value= "/hi")/Sub-path
Public String hi () {
SYSTEM.OUT.PRINTLN ("Running Hi Method");
return "HI"; Logical name
}
}

6, the written hello.jsp

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

<title> ' hello.jsp ' </title>

<body>
${REQUESTSCOPE.MSG}
</body>

Note-based spring MVC (required jar package, Web. XML configuration, Spring file configuration, @Controller, @RequestMapping, @RequestParam, model, El Value)