Spring MVC多视图配置

1.Spring配置的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: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>

解析多视图请求的类

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;
}
}

action

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