Spring MVC多视图配置(jsp, freemarker, Velocity)

1.Spring配置的XML

[html] view
plaincopy

<?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:p="http://www.springframework.org/schema/p"

xmlns:context="http://www.springframework.org/schema/context"

xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd ">

<context:component-scan

base-package="com.spring.action"/>

<!--

org.springframework.web.servlet.view.ResourceBundleViewResolver

用于多个视图集成时,ResourceBundleViewResolver是通过解析资源文件来解析请求输出文件的。

<property name="basename" value="views"></property>,即表示在/WEB-INF/classes路径下有一个

views.properties文件,本例中views.properties的内容为

welcome.(class)=org.springframework.web.servlet.view.velocity.VelocityView

welcome.url=welcome.vm

freemarker.(class)=org.springframework.web.servlet.view.freemarker.FreeMarkerView

freemarker.url=freemarker.ftl

-->

<bean class="org.springframework.web.servlet.view.ResourceBundleViewResolver">

<property name="basename" value="views">

</property>

<!--

<property name="order" value="0"></property>

-->

</bean>

<!-- FreeMarker环境配置 -->

<bean id="freemarkerConfig"

class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">

<!-- freemarker模板位置 -->

<property name="templateLoaderPath" value="/WEB-INF/freemarker/"/>

</bean>

<!-- velocity环境配置 -->

<bean id="velocityConfig"

class="org.springframework.web.servlet.view.velocity.VelocityConfigurer">

<!-- velocity配置文件路径 -->

<property name="configLocation" value="/WEB-INF/velocity.properties"/>

<!-- velocity模板路径 -->

<property name="resourceLoaderPath" value="/WEB-INF/velocity/"/>

</bean>

<bean id="viewResolver"

class="com.spring.action.MultiViewResover">

<property name="resolvers">

<map>

<entry key="jsp">

<bean

class="org.springframework.web.servlet.view.InternalResourceViewResolver">

<property name="viewClass"

value="org.springframework.web.servlet.view.JstlView"/>

<property name="prefix" value="/WEB-INF/jsp/"/>

<property name="suffix" value=".jsp"/>

</bean>

</entry>

<entry key="ftl">

<bean

class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">

<property name="cache" value="true"/>

<property name="prefix" value="/"/>

<property name="suffix" value=".ftl"/>

</bean>

</entry>

<entry key="vm">

<bean

class="org.springframework.web.servlet.view.velocity.VelocityViewResolver">

<property name="cache" value="true"/>

<property name="prefix" value="/"/>

<property name="suffix" value=".vm"/>

</bean>

</entry>

</map>

</property>

</bean>

</beans>

2 解析多视图请求的类

[java] view
plaincopy

package com.spring.action;

import java.util.Locale;

import java.util.Map;

import org.springframework.web.servlet.View;

import org.springframework.web.servlet.ViewResolver;

/**

* @author Jeson

* @blog:http://www.gbsou.com

* @date:Oct 20, 2009 8:39:27 AM

* @version :1.0

*

*/

public class MultiViewResover implements ViewResolver {

private Map<String, ViewResolver> resolvers;

@Override

public View resolveViewName(String viewName, Locale locale)

throws Exception {

int n = viewName.lastIndexOf("_"); // 获取

// viewName(modelAndView中的名字)看其有没有下划线

if (n == (-1))

return null; // 没有则直接返回空

// 有的话截取下划线后面的字符串 这里一般是jsp,ftl,vm与配置文件中的<entry key="ftl">的key匹配

String suffix = viewName.substring(n + 1);

// 根据下划线后面的字符串去获取托管的视图解析类对象

ViewResolver resolver = resolvers.get(suffix);

// 取下划线前面的部分 那时真正的资源名.比如我们要使用hello.jsp 那viewName就应该是hello_jsp

viewName = viewName.substring(0, n);

if (resolver != null)

return resolver.resolveViewName(viewName, locale);

return null;

}

public Map<String, ViewResolver> getResolvers() {

return resolvers;

}

public void setResolvers(Map<String, ViewResolver> resolvers) {

this.resolvers = resolvers;

}

}

3. action

[java] view
plaincopy

package com.spring.action;

import java.util.HashMap;

import java.util.Map;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.servlet.ModelAndView;

@Controller

public class HelloWorldAction {

@RequestMapping(value = "/helloworld.do")

public ModelAndView hello() {

ModelAndView modelAndView = new ModelAndView();

modelAndView.setViewName("hello_jsp");

modelAndView.addObject("message", "Hello,SpringMvc");

return modelAndView;

}

@RequestMapping(value = "/welcome.do")

public ModelAndView helloVm() {

// ModelAndView modelAndView=new ModelAndView();

// modelAndView.setViewName("freemarker_ftl");

// modelAndView.addObject("message", "Hello,Velocity");

// return modelAndView;

Map map = new HashMap();

return new ModelAndView("freemarker_ftl", map); // 根据之前的解释这里就是去寻找

// user.ftl资源

}

@RequestMapping(value = "/free.do")

public ModelAndView helloFreeMarker() {

ModelAndView modelAndView = new ModelAndView();

modelAndView.setViewName("welcome");

modelAndView.addObject("message", "Hello,Freemarker");

return modelAndView;

}

}

这样 在页面键入对应action就可以访问对应的视图实现了