自定义注解
package com.xiaolc.aspect;
import java.lang.annotation.*;
/**
* @author lc
* @date 2019/9/10
*/
@Documented
@Target({ElementType.TYPE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
public @interface LiCheng {
}
切面
package com.xiaolc.aspect;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.core.DefaultParameterNameDiscoverer;
import org.springframework.core.ParameterNameDiscoverer;
import org.springframework.stereotype.Component;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
/**
* 获取方法上的注解值
*/
@Component
@Aspect
public class AuditAnnotationAspect {
@Around("@annotation(liCheng))")
private static Map getFieldsName(ProceedingJoinPoint joinPoint,LiCheng liCheng) throws ClassNotFoundException, NoSuchMethodException {
String classType = joinPoint.getTarget().getClass().getName();
String methodName = joinPoint.getSignature().getName();
// 参数值
Object[] args = joinPoint.getArgs();
Class<?>[] classes = new Class[args.length];
for (int k = 0; k < args.length; k++) {
if (!args[k].getClass().isPrimitive()) {
// 获取的是封装类型而不是基础类型
String result = args[k].getClass().getName();
Class s = map.get(result);
classes[k] = s == null ? args[k].getClass() : s;
}
}
ParameterNameDiscoverer pnd = new DefaultParameterNameDiscoverer();
// 获取指定的方法,第二个参数可以不传,但是为了防止有重载的现象,还是需要传入参数的类型
Method method = Class.forName(classType).getMethod(methodName, classes);
// 参数名
String[] parameterNames = pnd.getParameterNames(method);
// 通过map封装参数和参数值
HashMap<String, Object> paramMap = new HashMap();
for (int i = 0; i < parameterNames.length; i++) {
paramMap.put(parameterNames[i], args[i]);
System.out.println("参数名:"+parameterNames[i]+"\n参数值"+args[i]);
}
return paramMap;
}
private static HashMap<String, Class> map = new HashMap<String, Class>() {
{
put("java.lang.Integer", int.class);
put("java.lang.Double", double.class);
put("java.lang.Float", float.class);
put("java.lang.Long", Long.class);
put("java.lang.Short", short.class);
put("java.lang.Boolean", boolean.class);
put("java.lang.Char", char.class);
}
};
}