一、SpringMVC和JSP集成
1. maven工程的pom.xml：
<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.john.springmvc</groupId> <artifactId>chapter5</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>chapter5 Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <jstl.version>1.2</jstl.version> <servlet.version>2.5</servlet.version> <spring.version>3.1.2.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>${jstl.version}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>${servlet.version}</version> </dependency> <!-- spring-webmvc会把依赖的其它spring包导入 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> </dependencies> <build> <finalName>chapter5</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-resources-plugin</artifactId> <version>2.5</version> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.3.2</version> <configuration> <source>1.7</source> <target>1.7</target> </configuration> </plugin> </plugins> </build></project>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="chapter5" version="2.5"> <!-- The encoding filter should be placed as the first filter --> <filter> <filter-name>encodingFilter</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> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <servlet> <servlet-name>chapter5</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/mvc-start.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>chapter5</servlet-name> <url-pattern>*.htm</url-pattern> </servlet-mapping></web-app>
<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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"><!-- 在不指定其它HandlerMapping和HandlerAdapter情况下，SpringMVC默认会实例化BeanNameUrlHandlerMapping和SimpleControllerHandlerAdapter --><!-- 如果bean的名称以'/'开头，放到列表中，判断请求路径是否在此列表中，是就调用对应bean的方法来处理请求 --><!--<bean />--><!-- 调用实现了Controller接口的控制器的handleRequest方法来处理请求 --><!--<bean value="org.springframework.web.servlet.view.JstlView"/> <property name="prefix" value="/WEB-INF/jsp/"/><!--JSP文件存放路径--> <!--<property name="suffix" value=".jsp"/>--><!--JSP文件扩展名，SpringMVC将(prefix+视图名+suffix)拼接为文件路径，然后去读该文件--> <property name="order" value="1" /><!--视图解析器优先级，数值越小，优先级越高，最高优先级为0--></bean><bean name="/first.htm" /></beans>
public class FirstController implements Controller { @Override public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception { ModelAndView mv = new ModelAndView("hello.jsp"); mv.addObject("msg", "Hello World!"); return mv; }}<%@ 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>Hello World</title> </head> <body> ${msg} </body> </html>