博客

原文：

https://www.jianshu.com/p/d0bbdf1974bd

采用方案： 使用spring 的 aop 技术切到自定义注解上，针对不同注解标志进行参数解析，记录日志

缺点是要针对每个不同的注解标志进行分别取注解标志，获取参数进行日志记录输出

1. 需要引用的依赖

<!--spring切面aop依赖-->
<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-aop</artifactId>
</dependency>

在application.properties文件里加这样一条配置
spring.aop.auto=true //这个配置我的例子中没有加 也正常运行

2. 创建实体类

public class SysLog implements Serializable {
    private Long id;

    private String username; //用户名

    private String operation; //操作

    private String method; //方法名

    private String params; //参数

    private String ip; //ip地址

    private Date createDate; //操作时间
    //创建getter和setter方法
}

3. 使用spring 的 aop 技术切到自定义注解上，所以先创建一个自定义注解类

import java.lang.annotation.*;

/**
 * 自定义注解类
 */
@Target(ElementType.METHOD) //注解放置的目标位置,METHOD是可注解在方法级别上
@Retention(RetentionPolicy.RUNTIME) //注解在哪个阶段执行
@Documented //生成文档
public @interface MyLog {
    String value() default "";
}

4. 创建aop切面实现类

import com.alibaba.fastjson.JSON;
import com.qfedu.rongzaiboot.annotation.MyLog;
import com.qfedu.rongzaiboot.entity.SysLog;
import com.qfedu.rongzaiboot.service.SysLogService;
import com.qfedu.rongzaiboot.utils.HttpContextUtils;
import com.qfedu.rongzaiboot.utils.IPUtils;
import com.qfedu.rongzaiboot.utils.ShiroUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.util.Date;

/**
 * 系统日志：切面处理类
 */
@Aspect
@Component
public class SysLogAspect {

    @Autowired
    private SysLogService sysLogService;

    //定义切点 @Pointcut
    //在注解的位置切入代码
    @Pointcut("@annotation( com.qfedu.rongzaiboot.annotation.MyLog)")
    public void logPoinCut() {
    }

    //切面 配置通知
    @AfterReturning("logPoinCut()")
    public void saveSysLog(JoinPoint joinPoint) {
        System.out.println("切面。。。。。");
        //保存日志
        SysLog sysLog = new SysLog();

        //从切面织入点处通过反射机制获取织入点处的方法
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        //获取切入点所在的方法
        Method method = signature.getMethod();

        //获取操作
        MyLog myLog = method.getAnnotation(MyLog.class);
        if (myLog != null) {
            String value = myLog.value();
            sysLog.setOperation(value);//保存获取的操作
        }

        //获取请求的类名
        String className = joinPoint.getTarget().getClass().getName();
        //获取请求的方法名
        String methodName = method.getName();
        sysLog.setMethod(className + "." + methodName);

       //请求的参数
        Object[] args = joinPoint.getArgs();
        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) {
                //ServletRequest不能序列化，从入参里排除，否则报异常：java.lang.IllegalStateException: It is illegal to call this method if the current request is not in asynchronous mode (i.e. isAsyncStarted() returns false)
                //ServletResponse不能序列化 从入参里排除，否则报异常：java.lang.IllegalStateException: getOutputStream() has already been called for this response
                continue;
            }
            arguments[i] = args[i];
        }
        String paramter = "";
        if (arguments != null) {
            try {
                paramter = JSONObject.toJSONString(arguments);
            } catch (Exception e) {
                paramter = arguments.toString();
            }
        }
        sysLog.setParams(paramter);

        sysLog.setCreateDate(new Date());
        //获取用户名
        sysLog.setUsername(ShiroUtils.getUserEntity().getUsername());
        //获取用户ip地址
        HttpServletRequest request = HttpContextUtils.getHttpServletRequest();
        sysLog.setIp(IPUtils.getIpAddr(request));

        //调用service保存SysLog实体类到数据库
        sysLogService.save(sysLog);
    }

}

5. 接下来就可以在需要监控的方法上添加 aop的自定义注解

**

格式为 @+自定义注解的类名 @MyLog

**

在这里插入代码片//例如在contoller类的方法上加注解
@RestController
@RequestMapping("/sys/menu")
public class SysMenuController extends AbstractController {

    @Autowired
    private SysMenuService sysMenuService;

    @MyLog(value = "删除菜单记录")  //这里添加了AOP的自定义注解
    @PostMapping("/del")
    public R deleteBatch(@RequestBody Long[] menuIds) {
        for (Long menuId : menuIds) {
            if (menuId <= 31) {
                return R.error("系统菜单，不能删除");
            }
        }
        sysMenuService.deleteBatch(menuIds);

        return R.ok("删除成功");
    }
}

6. 执行上面的方法操作后，会将记录保存到数据库

涉及到的util类：

HttpContextUtils

import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

public class HttpContextUtils {
    public static HttpServletRequest getHttpServletRequest() {
        return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
    }
}

IPUtils

import javax.servlet.http.HttpServletRequest;

public class IPUtils {
    public static String getIpAddr(HttpServletRequest request) {
        String ip = request.getHeader("x-real-ip");

        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("x-forwarded-for");
            if (ip != null) {
                ip = ip.split(",")[0].trim();
            }
        }

        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }

        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }

        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }

        return ip;
    }
}