先创建注解 OperInfo
1 @Target({ElementType.TYPE, ElementType.METHOD}) 2 @Retention(RetentionPolicy.RUNTIME) 3 @Documented 4 @Inherited 5 public @interface OperInfo { 6 7 public String description() default "";//操作说明 8 9 }
然后创建AOP的切面类 LogAspect
public class LogAspect {
@Resource
private OperationLogService operService;
public Object doAroundMethodForCtLog(ProceedingJoinPoint pjp)
throws Throwable{
Method method = getMethod(pjp);
if(method != null && method.isAnnotationPresent(OperInfo.class)){
OperInfo annotation = method.getAnnotation(OperInfo.class);
String descpTemp = annotation.description();
String description = executeTemplate(descpTemp, pjp);
HttpServletRequest request = HttpServletUtils.getRequest();
Users user = (Users) request.getSession().getAttribute("users");
OperationLog operation = new OperationLog();
operation.setChangetime(new Date());
operation.setChangeuserid(user.getUsersid());
operation.setOptid(UUIDUtils.getUUID());
operation.setDescription("用户："+ user.getUsername() +",日志信息：【{"+description+"}】");
operService.insertService(operation);
}
return pjp.proceed();
}
//解析SPEL
private String executeTemplate(String template, ProceedingJoinPoint joinPoint){
LocalVariableTableParameterNameDiscoverer parameterNameDiscovere = new LocalVariableTableParameterNameDiscoverer();
Method method = getMethod(joinPoint);
String[] parameterNames = parameterNameDiscovere.getParameterNames(method);
EvaluationContext context = new StandardEvaluationContext();
ExpressionParser parser = new SpelExpressionParser();
Object[] args = joinPoint.getArgs();
if(args.length == parameterNames.length){
for (int i = 0,len = args.length; i < len; i++) {
context.setVariable(parameterNames[i], args[i]);
}
}
return parser.parseExpression(template, new TemplateParserContext()).getValue(context, String.class);
}
private Method getMethod(ProceedingJoinPoint joinPoint){
Object target = joinPoint.getTarget();
Method method = ((MethodSignature)joinPoint.getSignature()).getMethod();
try {
method = target.getClass().getMethod(method.getName(), method.getParameterTypes());
} catch (Exception e) {
e.printStackTrace();
}
return method;
}
}
spring-mvc.xml配置
<bean class="com.aop.LogAspect" id="logAspect" /> <aop:config expose-proxy="true"> <aop:pointcut expression="execution(* com.service.impl.*Impl.*(..))" id="txPointcut"/> <aop:aspect ref="logAspect" > <aop:around method="doAroundMethodForCtLog" pointcut-ref="txPointcut" /> </aop:aspect> </aop:config>
最后在需要拦截的service上加上注解就行了
@OperInfo(description="新增了名为#{#user.username}的用户")
public int insertUser(Users user){
}