寻找写代码感觉（十）之SpringBootAOP的使用

写在前面

之前有写过关于spring boot Aop使用之类的文章，传送门，感兴趣的同学可以，详细查看文章。

这里其实还是为了方便调试，及日志输出使用。

使用实例

示例代码如下：

package com.rongrong.wiki.aspect;

import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.support.spring.PropertyPreFilters;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
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 org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

@Aspect
@Component
public class LogAspect {

    private final static Logger LOG = LoggerFactory.getLogger(LogAspect.class);

    /** 定义一个切点 */
    @Pointcut("execution(public * com.rongrong.*.controller..*Controller.*(..))")
    public void controllerPointcut() {}


    @Before("controllerPointcut()")
    public void doBefore(JoinPoint joinPoint) throws Throwable {
        // 开始打印请求日志
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        Signature signature = joinPoint.getSignature();
        String name = signature.getName();
        // 打印请求信息
        LOG.info("------------- 开始 -------------");
        LOG.info("请求地址: {} {}", request.getRequestURL().toString(), request.getMethod());
        LOG.info("类名方法: {}.{}", signature.getDeclaringTypeName(), name);
        LOG.info("远程地址: {}", request.getRemoteAddr());
        // 打印请求参数
        Object[] args = joinPoint.getArgs();
		// LOG.info("请求参数: {}", JSONObject.toJSONString(args));
		Object[] arguments  = new Object[args.length];
        for (int i = 0; i < args.length; i++) {
            if (args[i] instanceof ServletRequest
                    || args[i] instanceof ServletResponse
                    || args[i] instanceof MultipartFile) {
                continue;
            }
            arguments[i] = args[i];
        }
        // 排除字段，敏感字段或太长的字段不显示
        String[] excludeProperties = {"password", "file"};
        PropertyPreFilters filters = new PropertyPreFilters();
        PropertyPreFilters.MySimplePropertyPreFilter excludefilter = filters.addFilter();
        excludefilter.addExcludes(excludeProperties);
        LOG.info("请求参数: {}", JSONObject.toJSONString(arguments, excludefilter));
    }

    @Around("controllerPointcut()")
    public Object doAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        long startTime = System.currentTimeMillis();
        Object result = proceedingJoinPoint.proceed();
        // 排除字段，敏感字段或太长的字段不显示
        String[] excludeProperties = {"password", "file"};
        PropertyPreFilters filters = new PropertyPreFilters();
        PropertyPreFilters.MySimplePropertyPreFilter excludefilter = filters.addFilter();
        excludefilter.addExcludes(excludeProperties);
        LOG.info("返回结果: {}", JSONObject.toJSONString(result, excludefilter));
        LOG.info("------------- 结束 耗时：{} ms -------------", System.currentTimeMillis() - startTime);
        return result;
    }


}

为了查看效果，避免混淆影响，需要先注释掉拦截器及过滤器部分相关代码

重新编译，启动，查看结果如下：

到此，SpringBootAOP的使用分享完毕