Freemarker整合springmvc

首先我先把项目结构列出来，如下：

这个项目是maven project，怎么建立maven project就不在这里多说了。
先在pom.xml引入此项目所需要的包坐标

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/xsd/maven-4.0.0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>org.nisbc.freemarker</groupId>  <artifactId>freemarker-web01</artifactId>  <version>0.0.1-SNAPSHOT</version>  <packaging>war</packaging><properties>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    <spring.version>3.2.2.RELEASE</spring.version>  </properties>  <dependencies>    <dependency>          <groupId>junit</groupId>          <artifactId>junit</artifactId>          <version>4.10</version>          <scope>test</scope>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-core</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-beans</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-aop</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-orm</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>          <groupId>org.springframework</groupId>          <artifactId>spring-context-support</artifactId>          <version>${spring.version}</version>        </dependency>        <dependency>          <groupId>org.springframework</groupId>          <artifactId>spring-webmvc</artifactId>          <version>3.2.2.RELEASE</version>        </dependency>        <dependency>          <groupId>javax.servlet</groupId>          <artifactId>servlet-api</artifactId>          <version>2.5</version>          <scope>provided</scope>        </dependency>        <dependency>          <groupId>jstl</groupId>          <artifactId>jstl</artifactId>          <version>1.2</version>        </dependency>        <dependency>            <groupId>javax.servlet.jsp</groupId>            <artifactId>jsp-api</artifactId>            <version>2.2</version>        </dependency>        <dependency>          <groupId>jsptags</groupId>          <artifactId>pager-taglib</artifactId>          <version>2.0</version>        </dependency>        <dependency>          <groupId>org.freemarker</groupId>          <artifactId>freemarker</artifactId>          <version>2.3.20</version>        </dependency>  </dependencies>  <build>    <plugins>        <plugin>          <groupId>org.mortbay.jetty</groupId>          <artifactId>jetty-maven-plugin</artifactId>          <configuration>            <scanIntervalSeconds>10</scanIntervalSeconds>            <webApp>              <contextPath>/ftl</contextPath>            </webApp>            <connectors>               <connector implementation="org.eclipse.jetty.server.nio.SelectChannelConnector">                  <port>8888</port>                  <maxIdleTime>60000</maxIdleTime>               </connector>             </connectors>          </configuration>        </plugin>    </plugins>  </build></project>

web.xml<?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" 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="WebApp_ID" version="2.5">    <servlet>        <servlet-name>ftl</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    </servlet>    <servlet-mapping>        <servlet-name>ftl</servlet-name>        <url-pattern>/</url-pattern>    </servlet-mapping>    <filter>        <filter-name>CharacterFilter</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>CharacterFilter</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping></web-app>

ftl-servlet.xml<?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"    xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"    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-3.1.xsd        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd        http://www.directwebremoting.org/schema/spring-dwr http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd">    <mvc:annotation-driven/>    <mvc:resources location="/resources/" mapping="/resources/**"/>    <context:component-scan base-package="org.nisbc.ftl.controller"/>    <!-- freemarker config -->    <bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">      <property name="templateLoaderPath" value="/WEB-INF/ftl/"/>    </bean>    <bean id="viewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">      <property name="cache" value="true"/>      <property name="prefix" value=""/>      <property name="suffix" value=".ftl"/>      <property name="contentType" value="text/html; charset=UTF-8"></property>    </bean>    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="prefix" value="/WEB-INF/jsp/"/>        <property name="suffix" value=".jsp"/>    </bean></beans>

注意上面的ftl-servlet.xml中，freemarker的freemarker config要放在jsp的InternalResourceViewResolver前面！

helloFtl.ftl<!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><h1>Hello Freemarker:${username}</h1></body></html>

helloJsp.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>Insert title here</title></head><body><h1>Hello JSP:${username}</h1></body></html>

HelloController.java@Controllerpublic class HelloController {    @RequestMapping("/helloFtl")    public String HelloFtl(Model model){        model.addAttribute("username", "nishuibaichuan");        return "helloFtl";    }    @RequestMapping("/helloJsp")    public String HelloJsp(Model model){        model.addAttribute("username", "nishuibaichuan");        return "helloJsp";    }}

我在pom文件中引入了jetty，所以这里使用jetty当服务器。

运行结果如下：