获取注解里面的参数

package com.sumavision.bnadmin.util;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
* 
* 关于Action的说明
* 
* 类的方法描述注解
*
* @author gavin
* @version 1.0
* @since BN-Admin 1.0
*
*/
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
public @interface LogAction {
public String servicename() default "no servicename";
public String methodname() default "no methodname";
public String description() default "no description";
}

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package com.sumavision.bnadmin.util;

import java.lang.reflect.Method;
import java.util.Date;

import javax.annotation.Resource;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts2.ServletActionContext;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;

import com.sumavision.bnadmin.admin.service.UseroperateService;
import com.sumavision.bnadmin.domain.entity.BnUseroperate;

/**
* 
* 关于LogAspect的说明
* 
* 服务日志
*
* @author gavin
* @version 1.0
* @since BN-Admin 1.0
*
*/
@Aspect
public class LogAspect {

/**
* 
* 属性useroperateService
* 
* 服务日志维护服务
*/
@Resource
private UseroperateService useroperateService;

public UseroperateService getUseroperateService() {
return useroperateService;
}

public void setUseroperateService(UseroperateService useroperateService) {
this.useroperateService = useroperateService;
}

private Log logger = LogFactory.getLog(LogAspect.class);

@Around("execution(* com.sumavision.bnadmin.admin.web..*(..))")
public Object doSystemLog(ProceedingJoinPoint point) throws Throwable {
Object retVal = point.proceed();

String methodName = point.getSignature().getName();

  // 目标方法不为空
  if (StringUtils.isNotEmpty(methodName)) {
   // set与get方法除外
   if (!(methodName.startsWith("set") || methodName.startsWith("get"))) {

Class targetClass = point.getTarget().getClass();
Method method = targetClass.getMethod(methodName);

if (method != null) {

boolean hasAnnotation = method
.isAnnotationPresent(LogAction.class);

if (hasAnnotation) {
LogAction annotation = method.getAnnotation(LogAction.class);

      String servicename = annotation.servicename();
      String methodname = annotation.methodname();
      String description = annotation.description();
      if (logger.isDebugEnabled()) {
       logger.debug("Action method:" + method.getName()
         + " Description:" + description);
      }
      // 取到当前的操作用户
      String j_username = (String) ServletActionContext
        .getServletContext().getAttribute("j_username");
      if (j_username != null) {
       try {//调用服务将信息记录到数据库
        BnUseroperate useroperate = new BnUseroperate();
        useroperate.setUsername(j_username);
        useroperate.setServicemethodname(methodname);
        useroperate.setServicename(servicename);
        useroperate.setLastedittime(new Date());
        useroperate.setDescription(description);

        useroperateService.addUseroperate(useroperate);
       } catch (Exception e) {
        e.printStackTrace();
       }
      }
     }
    }
   }
  }
  return retVal;
}
}

-----------------------------------------优雅的分割线--------------------------------------------

@LogAction(servicename="登录",methodname="login",description="管理员登录")
public String login() {
  ServletActionContext.getServletContext().setAttribute("j_username", j_username);
  try {
   String encodePassword = passwordEncoder.encodePassword(j_password, null);
     boolean login_error = userService.login(j_username, encodePassword);
     ServletActionContext.getRequest().setAttribute("login_error", login_error);
     if (false == login_error) {
       return ERROR;
     }
  } catch (Exception e) {
   e.printStackTrace();
   return ERROR;
  }
  return SUCCESS;
}