SpringMVC 配置多视图解析器(velocity,jsp)

叁歲伎倆 2022-08-08 00:40 209阅读 0赞

### 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">
    
    	
    	<context:component-scan base-package="com.zhaochao.controller" />
    
    	
    	<bean id="mappingJacksonHttpMessageConverter"
    		class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
    		<property name="supportedMediaTypes">
    			<list>
    				<value>text/html;charset=UTF-8</value>
    			</list>
    		</property>
    	</bean>
    
    	
    	<bean
    		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    		<property name="messageConverters">
    			<list>
    				<ref bean="mappingJacksonHttpMessageConverter" />
    			</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/" />
    		
    	</bean>
    
    	
    	<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>
    
    	
    	<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 ###

![Center][]

### 5.效果 ###

![Center 1][]

![Center 2][]

![Center 3][]

###     ###

### 完整项目下载地址 ###

[http://download.csdn.net/detail/whzhaochao/8631177][http_download.csdn.net_detail_whzhaochao_8631177]

[Center]: /images/20220805/35bac6b51e844cdb9737ba850f8a3aa9.png
[Center 1]: /images/20220805/abdea0d600fe47e7a6b1af1019176198.png
[Center 2]: /images/20220805/9b7e0d21cb024f559014561b07ce0af6.png
[Center 3]: /images/20220805/b8ca0f3bebb44342aeefabcff5e33a62.png
[http_download.csdn.net_detail_whzhaochao_8631177]: http://download.csdn.net/detail/whzhaochao/8631177