spring boot使用自定义注解+AOP实现对Controller层指定方法的日志记录

1.创建一个spring boot项目，导入maven依赖：

	<dependencies>
		<dependency>
			<groupId>com.google.code.gson</groupId>
			<artifactId>gson</artifactId>
			<version>2.8.6</version>
		</dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

2.自定义RecordLog注解：

import java.lang.annotation.*;

@Target(ElementType.METHOD) // 此注解适用于方法上
@Retention(RetentionPolicy.RUNTIME) // 此注解不仅被保存到class文件中，jvm加载class文件之后依然存在
@Documented
/**
 * 用于标识方法需要记录日志
 */
public @interface RecordLog {
    /**
     * 方法描述
     *
     * @return
     */
    String desc() default "";
}

3.定义一个IP工具类获取访问的ip地址：

import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * @ClassName: IPUtil
 * @Description:获取ip地址工具类
 * @author: jinghx
 * @date: 2020/5/26 16:28
 */
public class IPUtil {
    private IPUtil() {
    }

    /**
     * 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址;
     *
     * @param request
     * @return
     */
    public final static String getIpAddress(HttpServletRequest request) throws UnknownHostException {
        // 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址
        String ip = request.getHeader("X-Forwarded-For");

        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            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.getHeader("HTTP_CLIENT_IP");
            }
            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
                ip = request.getHeader("HTTP_X_FORWARDED_FOR");
            }
            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
                ip = request.getRemoteAddr();
            }
        } else if (ip.length() > 15) {
            String[] ips = ip.split(",");
            for (int index = 0; index < ips.length; index++) {
                String strIp = (String) ips[index];
                if (!("unknown".equalsIgnoreCase(strIp))) {
                    ip = strIp;
                    break;
                }
            }
        }
        if ("127.0.0.1".equals(ip) || "0:0:0:0:0:0:0:1".equals(ip)) {
            // 根据网卡取本机配置的IP
            ip = getLocalIp();
        }
        return ip;
    }

    /**
     * 获取本机IP
     */
    public static String getLocalIp() throws UnknownHostException {
        InetAddress inetAddress = InetAddress.getLocalHost();
        String ip = inetAddress.getHostAddress().toString();//获得本机Ip
        return ip;
    }
}

4.编码实现切面类：

/**
 * @ClassName: LogAspect
 * @Description: 日志切面
 * @author: jinghx
 * @date: 2020/5/26 15:42
 */
@Aspect // 标识这是一个切面类
@Component // 把切面类加入到IOC容器中
public class LogAspect {

    private static final Logger log = LoggerFactory.getLogger(LogAspect.class);
    /**
     * 切入点表达式
     */
    public static final String exp = "@annotation(com.learn.annotation.RecordLog)"; // "execution(* com.learn.controller..*(..))";

    /**
     * 定义切入点
     */
    @Pointcut(exp)
    public void logAspect() {
    }

    /**
     * 切面方法（环绕通知）
     *
     * @param joinPoint
     * @return
     * @throws Exception
     */
    @Around("logAspect()")
    public Object doAround(ProceedingJoinPoint joinPoint) throws Throwable {
        long startTime = System.currentTimeMillis(); // 开始时间
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        // 获取方法描述
        String methodDesc = methodSignature.getMethod().getAnnotation(RecordLog.class).desc();
        // 获取Request对象
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = requestAttributes.getRequest();

        log.info("-----------开始访问方法:" + LocalDateTime.now().format(java.time.format.DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")) + "-------------");
        // 方法描述
        log.info("方法描述：{}", methodDesc);
        // 请求url
        log.info("请求url：{}", request.getRequestURL().toString());
        // 请求类型
        log.info("请求类型：{}", request.getMethod());
        // 请求方法
        log.info("请求方法：{}.{}", signature.getDeclaringTypeName(), methodSignature.getName());
        // 请求IP
        log.info("请求IP：{}", IPUtil.getIpAddress(request));
        // 请求参数
        log.info("请求参数：{}", new Gson().toJson(joinPoint.getArgs()));

        Object result = joinPoint.proceed();

        // 请求耗时
        log.info("请求耗时：{}ms", System.currentTimeMillis() - startTime);
        // 请求返回
        log.info("请求返回：{}", new Gson().toJson(result));
        log.info("------------------请求结束-----------------------");
        return result;
    }

}

5.编写一个Controller类进行测试：

/**
 * @ClassName: UserController
 * @Description: 用户Controller
 * @author: jinghx
 * @date: 2020/5/26 15:38
 */
@RestController
public class UserController {

    @GetMapping("/hello")
    @RecordLog(desc = "这个一个用于问好的方法")
    public String sayHello(String name) {
        return "hello," + name + "!";
    }

}

最终项目结构：

启动项目，在浏览器中输入：http://localhost:8080/hello?name=德玛西亚

日志输出：