前言
helloworld!的意义重要,就无需我多说了吧。按步骤来就行。
1. 安装 eclipse for ee
2. 配置 tomcat 服务
3. 下载 spring jar
http://maven.springframework.org/release/org/springframework/spring/
我这里选择 4.3.5.RELEASE
http://maven.springframework.org/release/org/springframework/spring/4.3.5.RELEASE/
4. 下载 Commons Logging jar
http://commons.apache.org/proper/commons-logging/download_logging.cgi
5. 新建项目 springMVC01
6. 加入所需的 jar 文件
7. 编辑 web.xml
/WEB-INF/web.xml
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| <?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">
<!-- 配置DispatchcerServlet -->
<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置Spring mvc下的配置文件的位置和名称 -->
<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>springDispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
|
mvc的配置都在文件 springmvc.xml 中
servlet-mapping 表示拦截模式，
8. springmvc.xml 配置文件
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| <?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: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.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 配置自动扫描的包 -->
<context:component-scan base-package="com.yuu.springmvc"></context:component-scan>
<!-- 配置视图解析器 如何把handler 方法返回值解析为实际的物理视图 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name = "prefix" value="/WEB-INF/views/"></property>
<property name = "suffix" value = ".jsp"></property>
</bean>
</beans>
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9. 编写 HelloWorld.java
com.yuu.springmvc.controller
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| package com.yuu.springmvc.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class HelloWorld {
/**
* 1. 使用RequestMapping注解来映射请求的URL
* 2. 返回值会通过视图解析器解析为实际的物理视图, 对于InternalResourceViewResolver视图解析器，会做如下解析
* 通过prefix+returnVal+suffix 这样的方式得到实际的物理视图，然后会转发操作
* "/WEB-INF/views/success.jsp"
* @return
*/
@RequestMapping("/helloworld")
public String hello(){
System.out.println("hello world");
return "success";
}
}
|
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