SpringMVC 配置多视图解析器(velocity,jsp)

1.自定义视图解析器

package com.zhaochao.controller;

import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.Set;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.ViewResolver;

/**
 * 自定义视图解析(通过配置实现多视图整合,如jsp,velocity,freemarker,pdf,excel...)
 * @author zhaochao
 *
 */
public class JeeDevViewResolver implements ViewResolver  {

    private static Log logger = LogFactory.getLog(JeeDevViewResolver.class);

    public View resolveViewName(String viewName, Locale locale) throws Exception {
       for(Map.Entry<Set<String>, ViewResolver> map : viewResolverMap.entrySet()){
           Set<String> suffixs = map.getKey();
           for(String suffix : suffixs){
        	   System.out.println(suffix+" == "+viewName);
               if (viewName.endsWith(suffix)){
                   ViewResolver viewResolver = map.getValue();
                   if(null != viewResolver){
                       if (logger.isDebugEnabled()) {
                            logger.debug("found viewResolver '" + viewResolver + "' for viewName '" + viewName+ "'");
                        }
                       return viewResolver.resolveViewName(viewName, locale);
                   }
               }

           }
       }
       if(defaultViewResolver != null){
           return defaultViewResolver.resolveViewName(viewName+".jsp", locale);
       }
       // to allow for ViewResolver chaining
       return null;
    }
    private Map<Set<String>,ViewResolver> viewResolverMap = new HashMap<Set<String>,ViewResolver>();
    private ViewResolver defaultViewResolver = null;
    public Map<Set<String>, ViewResolver> getViewResolverMap() {
        return viewResolverMap;
    }
    public void setViewResolverMap(Map<Set<String>, ViewResolver> viewResolverMap) {
        this.viewResolverMap = viewResolverMap;
    }
    public ViewResolver getDefaultViewResolver() {
        return defaultViewResolver;
    }
    public void setDefaultViewResolver(ViewResolver defaultViewResolver) {
        this.defaultViewResolver = defaultViewResolver;
    }
}

2.SpringMVC配置

<?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:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
		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"
	default-autowire="byName">

	<!-- 自动扫描controller包下的所有类，使其认为spring mvc的控制器 -->
	<context:component-scan base-package="com.zhaochao.controller" />

	<!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
	<bean id="mappingJacksonHttpMessageConverter"
		class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
		<property name="supportedMediaTypes">
			<list>
				<value>text/html;charset=UTF-8</value>
			</list>
		</property>
	</bean>

	<!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->
	<bean
		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
		<property name="messageConverters">
			<list>
				<ref bean="mappingJacksonHttpMessageConverter" /><!-- json转换器 -->
			</list>
		</property>
	</bean>







	<bean id="viewResolver" class="com.zhaochao.controller.JeeDevViewResolver">
		<property name="defaultViewResolver" ref="jspViewResolver" />
		<property name="viewResolverMap">
			<map>
				<entry>
					<key>
						<set>
							<value>.vm</value>
						</set>
					</key>
					<ref bean="velocityViewResolver" />
				</entry>
				<entry>
					<key>
						<set>
							<value>jsp</value>
						</set>
					</key>
					<ref bean="jspViewResolver" />
				</entry>
			</map>
		</property>
	</bean>


	<bean id="beanNameViewResolver"
		class="org.springframework.web.servlet.view.BeanNameViewResolver" />

	<bean id="jspViewResolver"
		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>

	<!-- Velocity ViewResolver Configuration -->
	<bean id="velocityViewResolver"
		class="org.springframework.web.servlet.view.velocity.VelocityViewResolver">
		<property name="order" value="0" />
		<property name="contentType" value="text/html;charset=UTF-8" />
		<property name="requestContextAttribute" value="req" />
	</bean>

	<!-- Velocity Configuration -->
	<bean id="velocityConfig"
		class="org.springframework.web.servlet.view.velocity.VelocityConfigurer">
		<property name="configLocation" value="/WEB-INF/velocity.properties" />
		<property name="resourceLoaderPath" value="/WEB-INF/vm/" />
		<property name="velocityProperties">
			<props>
				<prop key="input.encoding">UTF-8</prop>
				<prop key="output.encoding">UTF-8</prop>
			</props>
		</property>
	</bean>


</beans>

3.Controller控制器

package com.zhaochao.controller;

import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

import com.zhaochao.bean.user.UserBean;
import com.zhaochao.service.user.UserService;

@Controller
@RequestMapping("/userAction")
public class UserController {
	private UserService userService;
	public UserService getUserService() {
		return userService;
	}
	@Autowired
	public void setUserService(UserService userService) {
		this.userService = userService;
	}

	@RequestMapping(value = "/def")
	public String def(HttpServletRequest request, ModelMap map) {
		map.put("name", "hello world");
		request.setAttribute("name", "hello wrod!");
		List<UserBean> users=userService.getUserEntities();
		map.put("name", "hello world");
		map.put("users", users);
		return "def";
	}
	@RequestMapping(value = "/jsp")
	public String test1(HttpServletRequest request, ModelMap map) {
		map.put("name", "hello world");
		request.setAttribute("name", "hello wrod!");
		List<UserBean> users=userService.getUserEntities();
		map.put("name", "hello world");
		map.put("users", users);
		return "index.jsp";
	}
	@RequestMapping(value = "/vm")
	public String test3(HttpServletRequest request, ModelMap map) {
		List<UserBean> users=userService.getUserEntities();
		map.put("name", "hello world");
		map.put("users", users);
		return "index.vm";
	}

}

4.View层目录结构

5.效果