190313-SpringCloud應用篇之AOP實現日誌功能

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface AnoDot {
}

@Pointcut("execution(public * com.git.hui.boot.aop.demo.*.*(..)) || @annotation(AnoDot)")
public void pointcut() {
}

@Around(value = "pointcut()")
public Object doAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
Object res = null;
String req = null;
long start = System.currentTimeMillis();
try {
req = buildReqLog(proceedingJoinPoint);
res = proceedingJoinPoint.proceed();
return res;
} catch (Throwable e) {
res = "Un-Expect-Error";
throw e;
} finally {
long end = System.currentTimeMillis();
System.out.println(req + "" + JSON.toJSONString(res) + SPLIT_SYMBOL + (end - start));
}
}


private String buildReqLog(ProceedingJoinPoint joinPoint) {
// 目標物件
Object target = joinPoint.getTarget();
// 執行的方法
Method method = ((MethodSignature) joinPoint.getSignature()).getMethod();
// 請求引數
Object[] args = joinPoint.getArgs();

StringBuilder builder = new StringBuilder(target.getClass().getName());
builder.append(SPLIT_SYMBOL).append(method.getName()).append(SPLIT_SYMBOL);
for (Object arg : args) {
builder.append(JSON.toJSONString(arg)).append(",");
}
return builder.substring(0, builder.length() - 1) + SPLIT_SYMBOL;
}

// 這個bean下的方法，演示註解攔截
// com.git.hui.boot.aop.anodemo.AnoDemo
@Component
public class AnoDemo {

@AnoDot
public String gen(String ans) {
return UUID.randomUUID() + "<>" + ans;
}
}


// 這個bean下的方法，演示正則方式的攔截
// 注意前面的引數為..，表示任意引數型別和個數的方法都會攔截
// com.git.hui.boot.aop.demo.PrintDemo
@Component
public class PrintDemo {

public String genRand(int seed, String suffix) {
return seed + UUID.randomUUID().toString() + suffix;
}
}

@SpringBootApplication
public class Application {

public Application(PrintDemo printDemo, AnoDemo anoDemo) {
System.out.println(printDemo.genRand(10, "--一灰灰Blog"));
System.out.println(anoDemo.gen("!23"));
}

public static void main(String[] args) {
SpringApplication.run(Application.class);
}
}

com.git.hui.boot.aop.demo.PrintDemo|genRand|10,"--一灰灰Blog"|"10521195c0-3c2a-41d0-82f5-a41afad066b0--一灰灰Blog"|240
10521195c0-3c2a-41d0-82f5-a41afad066b0--一灰灰Blog
com.git.hui.boot.aop.anodemo.AnoDemo|gen|"!23"|"1e3438fe-e31f-4f75-8405-4ff7494f9c9c<>!23"|26
1e3438fe-e31f-4f75-8405-4ff7494f9c9c<>!23