今天继续实现AOP，到这里我个人认为是最灵活，可扩展的方式了，就拿日志管理来说，用Spring AOP 自定义注解形式实现日志管理。废话不多说，直接开始！！！
关于配置我还是的再说一遍。
在applicationContext-mvc.xml中要添加的
<mvc:annotation-driven />
<!-- 激活组件扫描功能,在包com.gcx及其子包下面自动扫描通过注解配置的组件 -->
<context:component-scan base-package="com.gcx" />
<!-- 启动对@AspectJ注解的支持 -->
<!-- proxy-target-class等于true是强制使用cglib代理，proxy-target-class默认是false，如果你的类实现了接口 就走JDK代理，如果没有，走cglib代理 -->
<!-- 注：对于单利模式建议使用cglib代理，虽然JDK动态代理比cglib代理速度快，但性能不如cglib -->
<!--如果不写proxy-target-class="true"这句话也没问题-->
<aop:aspectj-autoproxy proxy-target-class="true"/>
<!--切面-->
<bean id="systemLogAspect" class="com.gcx.annotation.SystemLogAspect"></bean>
接下来开始编写代码。
创建日志类实体
public class SystemLog {
private String id;
private String description;
private String method;
private Long logType;
private String requestIp;
private String exceptioncode;
private String exceptionDetail;
private String params;
private String createBy;
private Date createDate;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id == null ? null : id.trim();
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description == null ? null : description.trim();
}
public String getMethod() {
return method;
}
public void setMethod(String method) {
this.method = method == null ? null : method.trim();
}
public Long getLogType() {
return logType;
}
public void setLogType(Long logType) {
this.logType = logType;
}
public String getRequestIp() {
return requestIp;
}
public void setRequestIp(String requestIp) {
this.requestIp = requestIp == null ? null : requestIp.trim();
}
public String getExceptioncode() {
return exceptioncode;
}
public void setExceptioncode(String exceptioncode) {
this.exceptioncode = exceptioncode == null ? null : exceptioncode.trim();
}
public String getExceptionDetail() {
return exceptionDetail;
}
public void setExceptionDetail(String exceptionDetail) {
this.exceptionDetail = exceptionDetail == null ? null : exceptionDetail.trim();
}
public String getParams() {
return params;
}
public void setParams(String params) {
this.params = params == null ? null : params.trim();
}
public String getCreateBy() {
return createBy;
}
public void setCreateBy(String createBy) {
this.createBy = createBy == null ? null : createBy.trim();
}
public Date getCreateDate() {
return createDate;
}
public void setCreateDate(Date createDate) {
this.createDate = createDate;
}
}
编写dao接口
package com.gcx.dao;
import com.gcx.entity.SystemLog;
public interface SystemLogMapper {
int deleteByPrimaryKey(String id);
int insert(SystemLog record);
int insertSelective(SystemLog record);
SystemLog selectByPrimaryKey(String id);
int updateByPrimaryKeySelective(SystemLog record);
int updateByPrimaryKey(SystemLog record);
}
编写service层
package com.gcx.service;
import com.gcx.entity.SystemLog;
public interface SystemLogService {
int deleteSystemLog(String id);
int insert(SystemLog record);
int insertTest(SystemLog record);
SystemLog selectSystemLog(String id);
int updateSystemLog(SystemLog record);
}
编写service实现类serviceImpl
package com.gcx.service.impl; import javax.annotation.Resource; import org.springframework.stereotype.Service; import com.gcx.annotation.Log;
import com.gcx.dao.SystemLogMapper;
import com.gcx.entity.SystemLog;
import com.gcx.service.SystemLogService; @Service("systemLogService")
public class SystemLogServiceImpl implements SystemLogService { @Resource
private SystemLogMapper systemLogMapper; @Override
public int deleteSystemLog(String id) { return systemLogMapper.deleteByPrimaryKey(id);
} @Override public int insert(SystemLog record) { return systemLogMapper.insertSelective(record);
} @Override
public SystemLog selectSystemLog(String id) { return systemLogMapper.selectByPrimaryKey(id);
} @Override
public int updateSystemLog(SystemLog record) { return systemLogMapper.updateByPrimaryKeySelective(record);
} @Override
public int insertTest(SystemLog record) { return systemLogMapper.insert(record);
} }
到这里基本程序编写完毕
下面开始自定义注解
package com.gcx.annotation;
import java.lang.annotation.*;
@Target({ElementType.PARAMETER, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface Log {
/** 要执行的操作类型比如：add操作 **/
public String operationType() default "";
/** 要执行的具体操作比如：添加用户 **/
public String operationName() default "";
}
下面编写切面
package com.gcx.annotation; import java.lang.reflect.Method;
import java.util.Date;
import java.util.UUID; import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession; import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component; import com.gcx.entity.SystemLog;
import com.gcx.entity.User;
import com.gcx.service.SystemLogService;
import com.gcx.util.JsonUtil; /**
* @author 杨建
* @E-mail: email
* @version 创建时间：2015-10-19 下午4:29:05
* @desc 切点类
*/ @Aspect
@Component
public class SystemLogAspect { //注入Service用于把日志保存数据库
@Resource //这里我用resource注解，一般用的是@Autowired，他们的区别如有时间我会在后面的博客中来写
private SystemLogService systemLogService; private static final Logger logger = LoggerFactory.getLogger(SystemLogAspect. class); //Controller层切点
@Pointcut("execution (* com.gcx.controller..*.*(..))")
public void controllerAspect() {
} /**
* 前置通知 用于拦截Controller层记录用户的操作
*
* @param joinPoint 切点
*/
@Before("controllerAspect()")
public void doBefore(JoinPoint joinPoint) {
System.out.println("==========执行controller前置通知===============");
if(logger.isInfoEnabled()){
logger.info("before " + joinPoint);
}
} //配置controller环绕通知,使用在方法aspect()上注册的切入点
@Around("controllerAspect()")
public void around(JoinPoint joinPoint){
System.out.println("==========开始执行controller环绕通知===============");
long start = System.currentTimeMillis();
try {
((ProceedingJoinPoint) joinPoint).proceed();
long end = System.currentTimeMillis();
if(logger.isInfoEnabled()){
logger.info("around " + joinPoint + "\tUse time : " + (end - start) + " ms!");
}
System.out.println("==========结束执行controller环绕通知===============");
} catch (Throwable e) {
long end = System.currentTimeMillis();
if(logger.isInfoEnabled()){
logger.info("around " + joinPoint + "\tUse time : " + (end - start) + " ms with exception : " + e.getMessage());
}
}
} /**
* 后置通知 用于拦截Controller层记录用户的操作
*
* @param joinPoint 切点
*/
@After("controllerAspect()")
public void after(JoinPoint joinPoint) { /* HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
HttpSession session = request.getSession(); */
//读取session中的用户
// User user = (User) session.getAttribute("user");
//请求的IP
//String ip = request.getRemoteAddr();
User user = new User();
user.setId(1);
user.setName("张三");
String ip = "127.0.0.1";
try { String targetName = joinPoint.getTarget().getClass().getName();
String methodName = joinPoint.getSignature().getName();
Object[] arguments = joinPoint.getArgs();
Class targetClass = Class.forName(targetName);
Method[] methods = targetClass.getMethods();
String operationType = "";
String operationName = "";
for (Method method : methods) {
if (method.getName().equals(methodName)) {
Class[] clazzs = method.getParameterTypes();
if (clazzs.length == arguments.length) {
operationType = method.getAnnotation(Log.class).operationType();
operationName = method.getAnnotation(Log.class).operationName();
break;
}
}
}
//*========控制台输出=========*//
System.out.println("=====controller后置通知开始=====");
System.out.println("请求方法:" + (joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()")+"."+operationType);
System.out.println("方法描述:" + operationName);
System.out.println("请求人:" + user.getName());
System.out.println("请求IP:" + ip);
//*========数据库日志=========*//
SystemLog log = new SystemLog();
log.setId(UUID.randomUUID().toString());
log.setDescription(operationName);
log.setMethod((joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()")+"."+operationType);
log.setLogType((long)0);
log.setRequestIp(ip);
log.setExceptioncode( null);
log.setExceptionDetail( null);
log.setParams( null);
log.setCreateBy(user.getName());
log.setCreateDate(new Date());
//保存数据库
systemLogService.insert(log);
System.out.println("=====controller后置通知结束=====");
} catch (Exception e) {
//记录本地异常日志
logger.error("==后置通知异常==");
logger.error("异常信息:{}", e.getMessage());
}
} //配置后置返回通知,使用在方法aspect()上注册的切入点
@AfterReturning("controllerAspect()")
public void afterReturn(JoinPoint joinPoint){
System.out.println("=====执行controller后置返回通知=====");
if(logger.isInfoEnabled()){
logger.info("afterReturn " + joinPoint);
}
} /**
* 异常通知 用于拦截记录异常日志
*
* @param joinPoint
* @param e
*/
@AfterThrowing(pointcut = "controllerAspect()", throwing="e")
public void doAfterThrowing(JoinPoint joinPoint, Throwable e) {
/*HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
HttpSession session = request.getSession();
//读取session中的用户
User user = (User) session.getAttribute(WebConstants.CURRENT_USER);
//获取请求ip
String ip = request.getRemoteAddr(); */
//获取用户请求方法的参数并序列化为JSON格式字符串 User user = new User();
user.setId(1);
user.setName("张三");
String ip = "127.0.0.1"; String params = "";
if (joinPoint.getArgs() != null && joinPoint.getArgs().length > 0) {
for ( int i = 0; i < joinPoint.getArgs().length; i++) {
params += JsonUtil.getJsonStr(joinPoint.getArgs()[i]) + ";";
}
}
try { String targetName = joinPoint.getTarget().getClass().getName();
String methodName = joinPoint.getSignature().getName();
Object[] arguments = joinPoint.getArgs();
Class targetClass = Class.forName(targetName);
Method[] methods = targetClass.getMethods();
String operationType = "";
String operationName = "";
for (Method method : methods) {
if (method.getName().equals(methodName)) {
Class[] clazzs = method.getParameterTypes();
if (clazzs.length == arguments.length) {
operationType = method.getAnnotation(Log.class).operationType();
operationName = method.getAnnotation(Log.class).operationName();
break;
}
}
}
/*========控制台输出=========*/
System.out.println("=====异常通知开始=====");
System.out.println("异常代码:" + e.getClass().getName());
System.out.println("异常信息:" + e.getMessage());
System.out.println("异常方法:" + (joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()")+"."+operationType);
System.out.println("方法描述:" + operationName);
System.out.println("请求人:" + user.getName());
System.out.println("请求IP:" + ip);
System.out.println("请求参数:" + params);
/*==========数据库日志=========*/
SystemLog log = new SystemLog();
log.setId(UUID.randomUUID().toString());
log.setDescription(operationName);
log.setExceptioncode(e.getClass().getName());
log.setLogType((long)1);
log.setExceptionDetail(e.getMessage());
log.setMethod((joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()"));
log.setParams(params);
log.setCreateBy(user.getName());
log.setCreateDate(new Date());
log.setRequestIp(ip);
//保存数据库
systemLogService.insert(log);
System.out.println("=====异常通知结束=====");
} catch (Exception ex) {
//记录本地异常日志
logger.error("==异常通知异常==");
logger.error("异常信息:{}", ex.getMessage());
}
/*==========记录本地异常日志==========*/
logger.error("异常方法:{}异常代码:{}异常信息:{}参数:{}", joinPoint.getTarget().getClass().getName() + joinPoint.getSignature().getName(), e.getClass().getName(), e.getMessage(), params); } }
我这里写的比较全，前置通知，环绕通知，后置通知，异常通知，后置饭后通知，都写上了，在我们实际编写中不写全也没事，我习惯上把记录日志的逻辑写在后置通知里面，我看网上也有些在前置通知里面的，但我感觉写在后置通知里比较好。
下面开始在controller中加入自定义的注解！！
package com.gcx.controller; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping; import com.gcx.annotation.Log;
import com.gcx.service.UserService; @Controller
@RequestMapping("userController")
public class UserController { @Autowired
private UserService userService; @RequestMapping("testAOP")
@Log(operationType="add操作:",operationName="添加用户")
public void testAOP(String userName,String password){
userService.addUser(userName, password);
}
}
下面编写测试类
@Test
public void testAOP1(){
//启动Spring容器
ApplicationContext ctx = new ClassPathXmlApplicationContext(new String[]{"classpath:applicationContext-mvc.xml","classpath:applicationContext-dataSource.xml"});
//获取service或controller组件
UserController userController = (UserController) ctx.getBean("userController");
userController.testAOP("zhangsan", "123456");
}
数据库数据：
我原本想写两个切点，一个是service层，一个是controller层，service层是用来记录异常信息的日志，而controller层的是用来记录功能的日志，运行结果如下。
这样做的话不知道在实际的项目中运行效率好不好，在这里请看到博客的大牛给点建议！！