spring mvc: 生成RSS源
准备：
从相同的maven存储库页面下载 Rome 库及其依赖项rome-utils，jdom和slf4j。和所需的依赖关系
<!-- rss源依赖 --> <!-- https://mvnrepository.com/artifact/com.rometools/rome --> <dependency> <groupId>com.rometools</groupId> <artifactId>rome</artifactId> <version>1.8.0</version> </dependency> <!-- https://mvnrepository.com/artifact/com.rometools/rome-utils --> <dependency> <groupId>com.rometools</groupId> <artifactId>rome-utils</artifactId> <version>1.8.0</version> </dependency> <!-- https://mvnrepository.com/artifact/org.jdom/jdom --> <dependency> <groupId>org.jdom</groupId> <artifactId>jdom</artifactId> <version>2.0.2</version> </dependency> <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api --> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.7</version> </dependency>
访问地址：
http://localhost:8080/gugua3/rss/getrss
项目： gugua3
包：springweb
配置文件：web.xml, applicationContext.xml, springweb-servlet.xml
web.xml
<web-app>
<display-name>Archetype Created Web Application</display-name>
<!--配置文件路径-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<!-- 字符过滤器 -->
<filter>
<filter-name>encodingFilter</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>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 监听转发 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>springweb</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springweb</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
applicationContext.xml
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 默认：注解映射支持 --> <mvc:annotation-driven/> <!-- 静态资源配置 --> <mvc:resources location="/pages/**" mapping="/pages/"/> <!-- 自动扫描包名,controller --> <context:component-scan base-package="springweb"/> </beans>
springweb-servlet.xml
将RSSFeedViewer.java作为视图文件
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/> <bean id="rssViewer" class="springweb.RSSFeedViewer"/> </beans>
RSSMessage.java
package springweb;
import java.util.Date;
public class RSSMessage {
String title;
String url;
String summary;
Date createDate;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getSummary() {
return summary;
}
public void setSummary(String summary) {
this.summary = summary;
}
public Date getCreateDate() {
return createDate;
}
public void setCreateDate(Date createDate) {
this.createDate = createDate;
}
}
//视图模板（相当于jsp）
RSSFeedViewer.java
获取RSSController传过来的值：
List<RSSMessage> listContent = (List<RSSMessage>) model.get("feedContent");
package springweb;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.view.feed.AbstractRssFeedView;
import com.rometools.rome.feed.rss.Channel;
import com.rometools.rome.feed.rss.Content;
import com.rometools.rome.feed.rss.Item;
public class RSSFeedViewer extends AbstractRssFeedView {
//xml说明
protected void buildFeedMetadata(Map<String, Object> model, Channel feed, HttpServletRequest request)
{
feed.setTitle("YiibaiPoint Dot com");
feed.setDescription("java Yiibai and Examples");
feed.setLink("http://www.yiibai.com");
super.buildFeedMetadata(model, feed, request);
}
@Override
protected List<Item> buildFeedItems(Map<String, Object> model, HttpServletRequest request,
HttpServletResponse response) throws Exception {
// TODO Auto-generated method stub
List<RSSMessage> listContent = (List<RSSMessage>) model.get("feedContent");
List<Item> items = new ArrayList<Item>(listContent.size());
for(RSSMessage tempContent: listContent)
{
Item item = new Item();
Content content = new Content();
content.setValue(tempContent.getSummary());
item.setContent(content);
item.setTitle(tempContent.getTitle());
item.setLink(tempContent.getUrl());
item.setPubDate(tempContent.getCreateDate());
items.add(item);
}
return items;
}
}
RSSController.java
package springweb;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.springframework.stereotype.Controller;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class RSSController {
@RequestMapping(value="/rss/getrss", method=RequestMethod.GET)
public ModelAndView getFeedInRss()
{
List<RSSMessage> items = new ArrayList<RSSMessage>();
RSSMessage content = new RSSMessage();
content.setTitle("spring教程");
content.setUrl("http://www.baidu.com");
content.setSummary("你好教程教程.....");
content.setCreateDate(new Date());
items.add(content);
RSSMessage content2 = new RSSMessage();
content2.setTitle("spring mvc教程");
content2.setUrl("http://www.sina.com.cn");
content2.setSummary("spring mvc教程教程....");
content2.setCreateDate(new Date());
items.add(content2);
ModelAndView mv = new ModelAndView();
mv.setViewName("rssViewer");
mv.addObject("feedContent", items);
return mv;
}
}