搭建一个简单的springMVC框架

//新建一个简单的maven项目，选择war包

//web.xml配置
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	version="2.5">
	<display-name>SpringMVC</display-name>
	<servlet>
        <servlet-name>appServlet</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>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>appServlet</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
</web-app>
//pom.xml文件配置==========
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.cn</groupId>
  <artifactId>upload</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <dependencies>
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-webmvc</artifactId>
		<version>4.3.9.RELEASE</version>
	</dependency>
</dependencies>
</project>

//在src/main/resource下创建springmvc.xml核心配置文件

<?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:p="http://www.springframework.org/schema/p"  
    xmlns:context="http://www.springframework.org/schema/context"  
    xmlns:mvc="http://www.springframework.org/schema/mvc"    
    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.xsd">  
 
 
     <mvc:annotation-driven />
    <!-- ①：对web包中的所有类进行扫描，以完成Bean创建和自动依赖注入的功能 -->
    <context:component-scan base-package="com.zjn" />

    <!-- 这两个类用来启动基于Spring MVC的注解功能，将控制器与方法映射加入到容器中 -->
    <bean
        class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

    <!-- 这个类用于Spring MVC视图解析 -->
    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"></property>
         <property name="suffix" value=".jsp"></property>
    </bean>
    
    <!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
	<bean id="mappingJacksonHttpMessageConverter"
		class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
		<property name="supportedMediaTypes">
			<list>
				<value>text/html;charset=utf-8</value>
			</list>
		</property>
	</bean>
 
 
	<!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->
	<bean
		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
		<property name="messageConverters">
			<list>
				<ref bean="mappingJacksonHttpMessageConverter" /><!-- json转换器 -->
			</list>
		</property>
	</bean>
    
    <!-- 支持上传文件 -->
	<bean id="multipartResolver"
		class="org.springframework.web.multipart.commons.CommonsMultipartResolver" >
		<!-- 100M -->
		<property name="maxUploadSize" value="104857600"></property>	
		<property name="defaultEncoding" value="utf-8"></property>   
	</bean>
    
    
</beans>

//在src/main/java下创建com.zjn包，在zjn包下创建controller包和entity包，在cotroller包下创建控制类，在entity包下创建实体类类 @Controller public class UserController { @RequestMapping("/create") public String Create(Model model) { return "hello"; } @RequestMapping("/save") public String Save(@ModelAttribute("form") User user, Model model) { // user:视图层传给控制层的表单对象；model：控制层返回给视图层的对象 model.addAttribute("user", user); return "detail"; } } //实体类 public class User implements Serializable { /** * @author zjn */ private static final long serialVersionUID = 1L; private Integer id; // id private String name; // name private String pwd; // pwd private Integer age; // age private Date creatTime; // creatTime public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPwd() { return pwd; } public void setPwd(String pwd) { this.pwd = pwd; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } public Date getCreatTime() { return creatTime; } public void setCreatTime(Date creatTime) { this.creatTime = creatTime; } }
//在webapp下创建jsp文件夹，在jsp文件夹下创建hello.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>Add User From</title>
</head>
<body>
<form action="save" method="post">
<fieldset>
<legend>创建用户</legend>
<p>
<label>姓名：</label> <input type="text" id="name" name="name"
tabindex="1">
</p>
<p>
<label>年龄：</label> <input type="text" id="age" name="age"
tabindex="2">
</p>
<p>
<label>密码：</label> <input type="text" id="pwd" name="pwd"
tabindex="3">
</p>
<p id="buttons">
<input id="reset" type="reset" tabindex="4" value="取消"> <input
id="submit" type="submit" tabindex="5" value="创建">
</p>
</fieldset>
</form>
</body>
</html>

//在jsp文件夹下创建detail.jsp