简单的Maven+SpringMVC
一、SpringMVC非注解编程
1：修改pom.xml文件（相当于非Maven项目的导入jar包）
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>
2：修改配置文件web.xml为以下代码
<?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>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc-config.xml</param-value> </init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping> </web-app>
3：在src/main/resources下面创建springmvc-config.xml文件
<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-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "> <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" />
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />
<bean name="/hello" class="com.gx.controller.HelloController"/> </beans>
4：在src/main/java里面创建com.gx.controller.HelloController
package com.gx.controller; import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller; public class HelloController implements Controller{
@Override
public ModelAndView handleRequest(HttpServletRequest request,HttpServletResponse response)throws Exception{
System.out.println("handleRequest is working ......");
String myGetMess = request.getParameter("mess");
System.out.println("what I get is "+myGetMess);
ModelAndView mv = new ModelAndView();
mv.addObject("message" , "hello , this is my springmvc");
mv.setViewName("/index.jsp");
return mv;
}
}
5：在webapp下面创建跳转页面index.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
${requestScope.message}
</body>
</html>
6：在页面输入网址
http://localhost:8888/testSystem/hello?mess="123"
7：页面信息
8：控制台信息
二、SpringMVC注解编程
1：修改pom.xml文件（相当于非Maven项目的导入jar包）
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>
2：修改配置文件web.xml为以下代码
<?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>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc-config.xml</param-value> </init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping> </web-app>
3：在src/main/resources下面创建springmvc-config.xml文件
<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-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "> <!--
非注解编程的配置文件
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" />
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />
<bean name="/hello" class="com.gx.controller.HelloController"/>
--> <!-- spring会自动扫描 base-package 下面的包或者java文件 -->
<context:component-scan base-package="com.gx.controller" />
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping" />
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" /> </beans>
4：在src/main/java里面创建com.gx.controller.HelloController
package com.gx.controller; import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.stereotype.Controller; //public class HelloController implements Controller{
@Controller
public class HelloController{
//public ModelAndView handleRequest(HttpServletRequest request,HttpServletResponse response)throws Exception{
@RequestMapping(value="/hello")
public ModelAndView useNote(){
System.out.println("method useNote in controller HelloController is working ......");
ModelAndView mv = new ModelAndView();
mv.addObject("message" , "hello , this is my springmvc");
mv.setViewName("/index.jsp");
return mv;
}
}
5：在webapp下面创建跳转页面index.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
${requestScope.message}
</body>
</html>
6：在页面输入网址
http://localhost:8888/testSystem/hello
7：页面信息
8：控制台信息
三、注册编程获取页面值并跳转
（3.1）ModelAndView
1：在“二”的基础上添加com.gx.model.User
package com.gx.model;
public class User {
String username;
String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Override
public String toString() {
return "User [username=" + username + ", password=" + password + "]";
}
}
2：创建com.gx.controller.Controller1
package com.gx.controller; import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView; import com.gx.model.User; import org.springframework.stereotype.Controller; @Controller
public class Controller1{
@ModelAttribute
public void useModelAndView(String name,String password,ModelAndView mv){
System.out.println("useModelAndView in Controller1 is working......");
User user = new User();
user.setPassword(password);
user.setUsername(name);
mv.addObject("user",user);
}
@RequestMapping(value="/login1")
public ModelAndView login(ModelAndView mv){
System.out.println("login in Controller1 is working......");
User user = (User)mv.getModel().get("user");
System.out.println(user);
//跳转到welcome.jsp
mv.setViewName("/welcomePage.jsp");
return mv;
}
}
3：创建index.jsp页面
<%@ 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">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="login1" method="post">
请输入用户名
<input type="text" name="name" />
请输入密码
<input type="password" name="password" />
<input type="submit" value="登录" />
</form>
</body>
</html>
4：创建welcomPage.jsp
<%@ 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">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
${requestScope.user.username}，欢迎！！
</body>
</html>
5：在页面输入网址
6：点击登录之后的页面信息
7：控制台信息
（3.2）ModelMap
1：在（3.1）的基础上创建com.gx.controller.Controller2
package com.gx.controller; import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping; import com.gx.model.User; import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap; @Controller
public class Controller2{
@ModelAttribute
public void useModelMap(String name,String password,ModelMap modelMap){
System.out.println("useModelMap in Controller2 is working......");
User user = new User();
user.setPassword(password);
user.setUsername(name);
modelMap.addAttribute("user",user);
}
@RequestMapping(value="/login2")
public String login(ModelMap modelMap){
System.out.println("login in Controller2 is working......");
/*
* 在Controller1里面
* User user = (User)mv.getModel().get("user");
*/
User user = (User)modelMap.get("user");
System.out.println(user);
/*
* 在Controller1里面跳转到welcome.jsp
* mv.setViewName("/welcomePage.jsp");
* return mv;
*/
//跳转到welcome.jsp
return "welcomePage.jsp";
}
}
2：修改index.jsp里面form表单action为login2
3：在页面输入网址
4：点击确定之后页面信息
5：控制台信息
（3.3）Model
1：在（3.1）的基础上创建com.gx.controller.Controller3
package com.gx.controller; import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping; import com.gx.model.User; import org.springframework.stereotype.Controller;
import org.springframework.ui.Model; @Controller
public class Controller3{
@ModelAttribute
public void useModel(String name,String password,Model model){
System.out.println("useModel in Controller3 is working......");
User user = new User();
user.setPassword(password);
user.setUsername(name);
model.addAttribute("user",user);
}
@RequestMapping(value="/login3")
public String login(Model model){
System.out.println("login in Controller3 is working......");
/*
* 在UseModelController1里面
* User user = (User)mv.getModel().get("user");
* 在UseModelController2里面
* User user = (User)modelMap.get("user");
*/
User user = (User)model.asMap().get("user");
System.out.println(user);
//跳转到welcome.jsp
return "welcomePage.jsp";
}
}
2：修改index.jsp里面form表单action为login3
3：在页面输入网址
4：网页信息
5：控制台信息
（3.4）@RequestParam
1：在（3.1）的基础上创建com.gx.controller.Controller4
package com.gx.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam; import com.gx.model.User; import org.springframework.stereotype.Controller;
import org.springframework.ui.Model; @Controller
public class Controller4{
@RequestMapping(value="/login4")
public String login(@RequestParam("name")String username,
@RequestParam("password")String password,
Model model){
System.out.println("login in Controller4 is working......");
User user = new User();
user.setPassword(password);
user.setUsername(username);
System.out.println(user);
model.addAttribute("user",user);
//跳转到welcome.jsp
return "welcomePage.jsp";
}
}
2：修改index.jsp里面form表单action为login4
3：在页面输入网址
4：页面信息
5：控制台信息
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