使用ehcache-spring-annotations使得在工程中简单配置即可使用缓存

需要的jar包，首先需要的是我们之前做SpringMVC时的各个Spring的jar包

然后需要把ehcache-spring-annotations-1.2.0文件夹内lib内的，非spring的jar加进去，因为我们已经增加了我们版本的spring
然后还需要动态代理的cglib包

在spring主配置文件中配置ehcache注解的使用：

<?xml version="1.0" encoding="UTF-8"?> 
 
   
   
     
   
   
 

配置缓存配置文件ehcache.xml，改文件放在SRC下：

<?xml version="1.0" encoding="UTF-8"?> 
 
   
   
   
 

CacheService是示例类，代码如下：

package test; 
import java.util.Date; 
import org.springframework.transaction.annotation.Propagation; 
import org.springframework.transaction.annotation.Transactional; 
import com.googlecode.ehcache.annotations.Cacheable; 
import com.googlecode.ehcache.annotations.TriggersRemove; 
public class CacheService{ 
  @SuppressWarnings("deprecation") 
  @Cacheable(cacheName = "testCache") 
  public String getName(String code){ 
    System.out.println("查询编号：" + code); 
    return new Date().toLocaleString() + "-->" + code; 
  } 
  @SuppressWarnings("deprecation") 
  @Transactional(propagation = Propagation.REQUIRED)  
  public String update(String code){ 
    System.out.println("更新编号：" + code); 
    return new Date().toLocaleString() + "-->" + code; 
  } 
  @TriggersRemove(cacheName="testCache",removeAll=true) 
  public void flush(){ 
    System.out.println("情况缓存"); 
    System.out.println("Processing testFlushing"); 
  } 
} 

改类包含根据参数获取缓存值，更新缓存，情况缓存，都是使用注解标签实现。

Action类需要改动一下，代码如下：

package test; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.web.bind.annotation.RequestMapping; 
// http://localhost:8080/spring/hello.do?key=1&code=java 
@org.springframework.stereotype.Controller 
public class HelloController{ 
  private CacheService sacheService; 
  @SuppressWarnings("deprecation") 
  @RequestMapping("/hello.do") 
  public String hello(HttpServletRequest request,HttpServletResponse response){ 
    String key = request.getParameter("key"); 
    if("1".equals(key)){ 
      request.setAttribute("message", sacheService.getName(request.getParameter("code"))); 
    }else if("2".equals(key)){ 
      request.setAttribute("message", sacheService.update(request.getParameter("code"))); 
    }else{ 
      sacheService.flush(); 
      request.setAttribute("message", sacheService.getName(request.getParameter("code"))); 
    } 
    return "hello"; 
  } 
  public CacheService getSacheService() { 
    return sacheService; 
  } 
  @Autowired 
  public void setSacheService(CacheService sacheService) { 
    this.sacheService = sacheService; 
  } 
} 

根据key做不同的操作，然后分别访问以下几个路径，为了方便看效果和学习，我把工程代码放到了附件：

第一次没有缓存
http://localhost:8080/spring/hello.do?key=1&code=java
读取缓存
http://localhost:8080/spring/hello.do?key=1&code=java
更新缓存
http://localhost:8080/spring/hello.do?key=2&code=java
读取最新缓存
http://localhost:8080/spring/hello.do?key=1&code=java
情况缓存
http://localhost:8080/spring/hello.do?key=3