SpringMVC入门（一）--b.使用注解开发

柔光的暖阳◎ 2022-05-27 13:42 201阅读 0赞

## 常见web工程 ##

## 1.1导入jar包 ##

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## 1.2 配置web.xml文件--配置前端处理器 ##

<?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_3_0.xsd" id="WebApp_ID" version="3.0">
      <display-name>SpringMVCStudyDay01_Annotation</display-name>
       
      <filter>
      	<filter-name>characterEncoding</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>characterEncoding</filter-name>
      	<url-pattern>/*</url-pattern>
      </filter-mapping>
      
      <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-servlet.xml</param-value>   
       </init-param>
      </servlet>
      
      <servlet-mapping>
      <servlet-name>springmvc</servlet-name>
      <url-pattern>*.do</url-pattern>
      </servlet-mapping>
      <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
      </welcome-file-list>
    </web-app>

### 1.3配置springMVC.xml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: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">
    		
    
    		<context:component-scan base-package="cn.itcast"></context:component-scan>
    		
    
    		<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>
    		
    
    		<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean>
    		
    
    		
    		<bean id="viewResover" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    			<property name="prefix" value="/WEB-INF/pages/"></property>
    			<property name="suffix" value=".jsp"></property>
    		</bean>
    	</beans>

### 1.4编写执行类 ###

package com.zit.controller;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    @Controller
    public class UserController {
    	@RequestMapping("hello")
    	public String sayHello() {
    		return "hello";
    	}
    	
    }

1.5 编写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>
    <h2>SpringMVC注解开发</h2>
    </body>
    </html>

[70]: /images/20220527/41610303704d4ca7a149efbfc953de52.png