转:spring AOP自定义注解方式实现日志管理
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
编写dao接口
编写service层
编写service实现类serviceImpl
到这里基本程序编写完毕
下面开始自定义注解
1 package com.gcx.annotation;
2
3 import java.lang.annotation.*; 4 5 @Target({ElementType.PARAMETER, ElementType.METHOD}) 6 @Retention(RetentionPolicy.RUNTIME) 7 @Documented 8 public @interface Log { 9 10 /** 要执行的操作类型比如:add操作 **/ 11 public String operationType() default ""; 12 13 /** 要执行的具体操作比如:添加用户 **/ 14 public String operationName() default ""; 15 }
下面编写切面
1 package com.gcx.annotation;
2
3 import java.lang.reflect.Method; 4 import java.util.Date; 5 import java.util.UUID; 6 7 import javax.annotation.Resource; 8 import javax.servlet.http.HttpServletRequest; 9 import javax.servlet.http.HttpSession; 10 11 import org.aspectj.lang.JoinPoint; 12 import org.aspectj.lang.ProceedingJoinPoint; 13 import org.aspectj.lang.annotation.After; 14 import org.aspectj.lang.annotation.AfterReturning; 15 import org.aspectj.lang.annotation.AfterThrowing; 16 import org.aspectj.lang.annotation.Around; 17 import org.aspectj.lang.annotation.Aspect; 18 import org.aspectj.lang.annotation.Before; 19 import org.aspectj.lang.annotation.Pointcut; 20 import org.slf4j.Logger; 21 import org.slf4j.LoggerFactory; 22 import org.springframework.stereotype.Component; 23 24 import com.gcx.entity.SystemLog; 25 import com.gcx.entity.User; 26 import com.gcx.service.SystemLogService; 27 import com.gcx.util.JsonUtil; 28 29 /** 30 * @author 杨建 31 * @E-mail: email 32 * @version 创建时间:2015-10-19 下午4:29:05 33 * @desc 切点类 34 */ 35 36 @Aspect 37 @Component 38 public class SystemLogAspect { 39 40 //注入Service用于把日志保存数据库 41 @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 42 private SystemLogService systemLogService; 43 44 private static final Logger logger = LoggerFactory.getLogger(SystemLogAspect. class); 45 46 //Controller层切点 47 @Pointcut("execution (* com.gcx.controller..*.*(..))") 48 public void controllerAspect() { 49 } 50 51 /** 52 * 前置通知 用于拦截Controller层记录用户的操作 53 * 54 * @param joinPoint 切点 55 */ 56 @Before("controllerAspect()") 57 public void doBefore(JoinPoint joinPoint) { 58 System.out.println("==========执行controller前置通知==============="); 59 if(logger.isInfoEnabled()){ 60 logger.info("before " + joinPoint); 61 } 62 } 63 64 //配置controller环绕通知,使用在方法aspect()上注册的切入点 65 @Around("controllerAspect()") 66 public void around(JoinPoint joinPoint){ 67 System.out.println("==========开始执行controller环绕通知==============="); 68 long start = System.currentTimeMillis(); 69 try { 70 ((ProceedingJoinPoint) joinPoint).proceed(); 71 long end = System.currentTimeMillis(); 72 if(logger.isInfoEnabled()){ 73 logger.info("around " + joinPoint + "\tUse time : " + (end - start) + " ms!"); 74 } 75 System.out.println("==========结束执行controller环绕通知==============="); 76 } catch (Throwable e) { 77 long end = System.currentTimeMillis(); 78 if(logger.isInfoEnabled()){ 79 logger.info("around " + joinPoint + "\tUse time : " + (end - start) + " ms with exception : " + e.getMessage()); 80 } 81 } 82 } 83 84 /** 85 * 后置通知 用于拦截Controller层记录用户的操作 86 * 87 * @param joinPoint 切点 88 */ 89 @After("controllerAspect()") 90 public void after(JoinPoint joinPoint) { 91 92 /* HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest(); 93 HttpSession session = request.getSession(); */ 94 //读取session中的用户 95 // User user = (User) session.getAttribute("user"); 96 //请求的IP 97 //String ip = request.getRemoteAddr(); 98 User user = new User(); 99 user.setId(1); 100 user.setName("张三"); 101 String ip = "127.0.0.1"; 102 try { 103 104 String targetName = joinPoint.getTarget().getClass().getName(); 105 String methodName = joinPoint.getSignature().getName(); 106 Object[] arguments = joinPoint.getArgs(); 107 Class targetClass = Class.forName(targetName); 108 Method[] methods = targetClass.getMethods(); 109 String operationType = ""; 110 String operationName = ""; 111 for (Method method : methods) { 112 if (method.getName().equals(methodName)) { 113 Class[] clazzs = method.getParameterTypes(); 114 if (clazzs.length == arguments.length) { 115 operationType = method.getAnnotation(Log.class).operationType(); 116 operationName = method.getAnnotation(Log.class).operationName(); 117 break; 118 } 119 } 120 } 121 //*========控制台输出=========*// 122 System.out.println("=====controller后置通知开始====="); 123 System.out.println("请求方法:" + (joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()")+"."+operationType); 124 System.out.println("方法描述:" + operationName); 125 System.out.println("请求人:" + user.getName()); 126 System.out.println("请求IP:" + ip); 127 //*========数据库日志=========*// 128 SystemLog log = new SystemLog(); 129 log.setId(UUID.randomUUID().toString()); 130 log.setDescription(operationName); 131 log.setMethod((joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()")+"."+operationType); 132 log.setLogType((long)0); 133 log.setRequestIp(ip); 134 log.setExceptioncode( null); 135 log.setExceptionDetail( null); 136 log.setParams( null); 137 log.setCreateBy(user.getName()); 138 log.setCreateDate(new Date()); 139 //保存数据库 140 systemLogService.insert(log); 141 System.out.println("=====controller后置通知结束====="); 142 } catch (Exception e) { 143 //记录本地异常日志 144 logger.error("==后置通知异常=="); 145 logger.error("异常信息:{}", e.getMessage()); 146 } 147 } 148 149 //配置后置返回通知,使用在方法aspect()上注册的切入点 150 @AfterReturning("controllerAspect()") 151 public void afterReturn(JoinPoint joinPoint){ 152 System.out.println("=====执行controller后置返回通知====="); 153 if(logger.isInfoEnabled()){ 154 logger.info("afterReturn " + joinPoint); 155 } 156 } 157 158 /** 159 * 异常通知 用于拦截记录异常日志 160 * 161 * @param joinPoint 162 * @param e 163 */ 164 @AfterThrowing(pointcut = "controllerAspect()", throwing="e") 165 public void doAfterThrowing(JoinPoint joinPoint, Throwable e) { 166 /*HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest(); 167 HttpSession session = request.getSession(); 168 //读取session中的用户 169 User user = (User) session.getAttribute(WebConstants.CURRENT_USER); 170 //获取请求ip 171 String ip = request.getRemoteAddr(); */ 172 //获取用户请求方法的参数并序列化为JSON格式字符串 173 174 User user = new User(); 175 user.setId(1); 176 user.setName("张三"); 177 String ip = "127.0.0.1"; 178 179 String params = ""; 180 if (joinPoint.getArgs() != null && joinPoint.getArgs().length > 0) { 181 for ( int i = 0; i < joinPoint.getArgs().length; i++) { 182 params += JsonUtil.getJsonStr(joinPoint.getArgs()[i]) + ";"; 183 } 184 } 185 try { 186 187 String targetName = joinPoint.getTarget().getClass().getName(); 188 String methodName = joinPoint.getSignature().getName(); 189 Object[] arguments = joinPoint.getArgs(); 190 Class targetClass = Class.forName(targetName); 191 Method[] methods = targetClass.getMethods(); 192 String operationType = ""; 193 String operationName = ""; 194 for (Method method : methods) { 195 if (method.getName().equals(methodName)) { 196 Class[] clazzs = method.getParameterTypes(); 197 if (clazzs.length == arguments.length) { 198 operationType = method.getAnnotation(Log.class).operationType(); 199 operationName = method.getAnnotation(Log.class).operationName(); 200 break; 201 } 202 } 203 } 204 /*========控制台输出=========*/ 205 System.out.println("=====异常通知开始====="); 206 System.out.println("异常代码:" + e.getClass().getName()); 207 System.out.println("异常信息:" + e.getMessage()); 208 System.out.println("异常方法:" + (joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()")+"."+operationType); 209 System.out.println("方法描述:" + operationName); 210 System.out.println("请求人:" + user.getName()); 211 System.out.println("请求IP:" + ip); 212 System.out.println("请求参数:" + params); 213 /*==========数据库日志=========*/ 214 SystemLog log = new SystemLog(); 215 log.setId(UUID.randomUUID().toString()); 216 log.setDescription(operationName); 217 log.setExceptioncode(e.getClass().getName()); 218 log.setLogType((long)1); 219 log.setExceptionDetail(e.getMessage()); 220 log.setMethod((joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()")); 221 log.setParams(params); 222 log.setCreateBy(user.getName()); 223 log.setCreateDate(new Date()); 224 log.setRequestIp(ip); 225 //保存数据库 226 systemLogService.insert(log); 227 System.out.println("=====异常通知结束====="); 228 } catch (Exception ex) { 229 //记录本地异常日志 230 logger.error("==异常通知异常=="); 231 logger.error("异常信息:{}", ex.getMessage()); 232 } 233 /*==========记录本地异常日志==========*/ 234 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); 235 236 } 237 238 }
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!!
1 package com.gcx.controller;
2
3 import org.springframework.beans.factory.annotation.Autowired; 4 import org.springframework.stereotype.Controller; 5 import org.springframework.web.bind.annotation.RequestMapping; 6 7 import com.gcx.annotation.Log; 8 import com.gcx.service.UserService; 9 10 @Controller 11 @RequestMapping("userController") 12 public class UserController { 13 14 @Autowired 15 private UserService userService; 16 17 @RequestMapping("testAOP") 18 @Log(operationType="add操作:",operationName="添加用户") 19 public void testAOP(String userName,String password){ 20 userService.addUser(userName, password); 21 } 22 }
下面编写测试类
1 @Test
2 public void testAOP1(){ 3 //启动Spring容器 4 ApplicationContext ctx = new ClassPathXmlApplicationContext(new String[]{"classpath:applicationContext-mvc.xml","classpath:applicationContext-dataSource.xml"}); 5 //获取service或controller组件 6 UserController userController = (UserController) ctx.getBean("userController"); 7 userController.testAOP("zhangsan", "123456"); 8 } 9
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!!