springmvc注解开发入门

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新建项目

new-dynamic web project-projectname-defaultoutputfolder:(可选择的更改为WebRoot\WEB-INF\classes)-contentdirectory:(可选择更改为WebRoot)-finish

lib导包

注意导入的是spring3.2版本的包，考虑spring3.2可能与jdk1.8不兼容，所以尽量配置tomcat7+jdk1.7

配置tomcat到eclipse

window-preferences-server-runtime environment-add-type-选择tomcat路径和jdk版本

web.xml项目入口文件

<?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" id="WebApp_ID" version="2.5">  <display-name>springmvc_2</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.xml</param-value>  </init-param>    </servlet>    <servlet-mapping>  <servlet-name>springmvc</servlet-name>  <url-pattern>*.do</url-pattern>  </servlet-mapping>     <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>    <welcome-file-list>    <welcome-file>index.html</welcome-file>    <welcome-file>index.htm</welcome-file>    <welcome-file>index.jsp</welcome-file>    <welcome-file>default.html</welcome-file>    <welcome-file>default.htm</welcome-file>    <welcome-file>default.jsp</welcome-file>  </welcome-file-list></web-app>

springmvc.xml

项目-new source folder-config下
<?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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.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="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsps/"></property>
<property name="suffix" value=".jsp"></property></bean>
</beans>

配置注解处理器映射器

配置注解处理器适配器

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean>

扫描

<context:component-scan base-package="cn.itcast"></context:component-scan>

定义controller类

src-new package:cn.itcast.controller下
package cn.itcast.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class UserController {
@RequestMapping("hello") //请求映射注解
public String myHello(){
return "hello" ; //表示返回逻辑视图
}
}

定义页面

WEB-INF new folder:jsps下
<%@ 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>
<h1> welcome to springmvc</h1>
</body>
</html>

添加buildpath

项目-buildpath-addlibrary-server runtime-tomcat7

添加server

new - server name（可更改）
双击服务名 module - add module-保存-启动
浏览器:http://localhost:8080/springmvc_2/hello.do

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