在Spring框架中，使用AOP配合自定义注解可以方便的实现用户操作的监控。首先搭建一个基本的Spring Boot Web环境开启Spring Boot，然后引入必要依赖：
1<dependency>
2 <groupId>org.springframework.bootgroupId>
3 <artifactId>spring-boot-starter-jdbcartifactId>
4dependency>
5
6
7<dependency>
8 <groupId>org.springframework.bootgroupId>
9 <artifactId>spring-boot-starter-aopartifactId>
10dependency>
11
12
13<dependency>
14 <groupId>com.oraclegroupId>
15 <artifactId>ojdbc6artifactId>
16 <version>6.0version>
17dependency>
18
19
20<dependency>
21 <groupId>com.alibabagroupId>
22 <artifactId>druid-spring-boot-starterartifactId>
23 <version>1.1.6version>
24dependency>自定义注解
定义一个方法级别的@Log注解，用于标注需要监控的方法：
1@Target(ElementType.METHOD)
2@Retention(RetentionPolicy.RUNTIME)
3public @interface Log {
4 String value() default "";
5}创建库表和实体
在数据库中创建一张sys_log表，用于保存用户的操作日志，数据库采用oracle 11g：
1CREATE TABLE "SCOTT"."SYS_LOG" (
2 "ID" NUMBER(20) NOT NULL ,
3 "USERNAME" VARCHAR2(50 BYTE) NULL ,
4 "OPERATION" VARCHAR2(50 BYTE) NULL ,
5 "TIME" NUMBER(11) NULL ,
6 "METHOD" VARCHAR2(200 BYTE) NULL ,
7 "PARAMS" VARCHAR2(500 BYTE) NULL ,
8 "IP" VARCHAR2(64 BYTE) NULL ,
9 "CREATE_TIME" DATE NULL
10);
11
12COMMENT ON COLUMN "SCOTT"."SYS_LOG"."USERNAME" IS '用户名';
13COMMENT ON COLUMN "SCOTT"."SYS_LOG"."OPERATION" IS '用户操作';
14COMMENT ON COLUMN "SCOTT"."SYS_LOG"."TIME" IS '响应时间';
15COMMENT ON COLUMN "SCOTT"."SYS_LOG"."METHOD" IS '请求方法';
16COMMENT ON COLUMN "SCOTT"."SYS_LOG"."PARAMS" IS '请求参数';
17COMMENT ON COLUMN "SCOTT"."SYS_LOG"."IP" IS 'IP地址';
18COMMENT ON COLUMN "SCOTT"."SYS_LOG"."CREATE_TIME" IS '创建时间';
19
20CREATE SEQUENCE seq_sys_log START WITH 1 INCREMENT BY 1;库表对应的实体：
1public class SysLog implements Serializable{
2
3 private static final long serialVersionUID = -6309732882044872298L;
4
5 private Integer id;
6 private String username;
7 private String operation;
8 private Integer time;
9 private String method;
10 private String params;
11 private String ip;
12 private Date createTime;
13 // get,set略
14}保存日志的方法
为了方便，这里直接使用Spring JdbcTemplate来操作数据库。定义一个SysLogDao接口，包含一个保存操作日志的抽象方法：
1public interface SysLogDao {
2 void saveSysLog(SysLog syslog);
3}其实现方法：
1@Repository
2public class SysLogDaoImp implements SysLogDao {
3
4 @Autowired
5 private JdbcTemplate jdbcTemplate;
6
7 @Override
8 public void saveSysLog(SysLog syslog) {
9 StringBuffer sql = new StringBuffer("insert into sys_log ");
10 sql.append("(id,username,operation,time,method,params,ip,create_time) ");
11 sql.append("values(seq_sys_log.nextval,:username,:operation,:time,:method,");
12 sql.append(":params,:ip,:createTime)");
13
14 NamedParameterJdbcTemplate npjt = new NamedParameterJdbcTemplate(this.jdbcTemplate.getDataSource());
15 npjt.update(sql.toString(), new BeanPropertySqlParameterSource(syslog));
16 }
17}切面和切点
定义一个LogAspect类，使用@Aspect标注让其成为一个切面，切点为使用@Log注解标注的方法，使用@Around环绕通知：
1@Aspect
2@Component
3public class LogAspect {
4
5 @Autowired
6 private SysLogDao sysLogDao;
7
8 @Pointcut("@annotation(com.springboot.annotation.Log)")
9 public void pointcut() { }
10
11 @Around("pointcut()")
12 public Object around(ProceedingJoinPoint point) {
13 Object result = null;
14 long beginTime = System.currentTimeMillis();
15 try {
16 // 执行方法
17 result = point.proceed();
18 } catch (Throwable e) {
19 e.printStackTrace();
20 }
21 // 执行时长(毫秒)
22 long time = System.currentTimeMillis() - beginTime;
23 // 保存日志
24 saveLog(point, time);
25 return result;
26 }
27
28 private void saveLog(ProceedingJoinPoint joinPoint, long time) {
29 MethodSignature signature = (MethodSignature) joinPoint.getSignature();
30 Method method = signature.getMethod();
31 SysLog sysLog = new SysLog();
32 Log logAnnotation = method.getAnnotation(Log.class);
33 if (logAnnotation != null) {
34 // 注解上的描述
35 sysLog.setOperation(logAnnotation.value());
36 }
37 // 请求的方法名
38 String className = joinPoint.getTarget().getClass().getName();
39 String methodName = signature.getName();
40 sysLog.setMethod(className + "." + methodName + "()");
41 // 请求的方法参数值
42 Object[] args = joinPoint.getArgs();
43 // 请求的方法参数名称
44 LocalVariableTableParameterNameDiscoverer u = new LocalVariableTableParameterNameDiscoverer();
45 String[] paramNames = u.getParameterNames(method);
46 if (args != null && paramNames != null) {
47 String params = "";
48 for (int i = 0; i 49 params += " " + paramNames[i] + ": " + args[i];
50 }
51 sysLog.setParams(params);
52 }
53 // 获取request
54 HttpServletRequest request = HttpContextUtils.getHttpServletRequest();
55 // 设置IP地址
56 sysLog.setIp(IPUtils.getIpAddr(request));
57 // 模拟一个用户名
58 sysLog.setUsername("mrbird");
59 sysLog.setTime((int) time);
60 sysLog.setCreateTime(new Date());
61 // 保存系统日志
62 sysLogDao.saveSysLog(sysLog);
63 }
64}测试
TestController：
1@RestController
2public class TestController {
3
4 @Log("执行方法一")
5 @GetMapping("/one")
6 public void methodOne(String name) { }
7
8 @Log("执行方法二")
9 @GetMapping("/two")
10 public void methodTwo() throws InterruptedException {
11 Thread.sleep(2000);
12 }
13
14 @Log("执行方法三")
15 @GetMapping("/three")
16 public void methodThree(String name, String age) { }
17}最终项目目录如下图所示：
查询数据库：
1SQL> select * from sys_log order by id;
2
3 ID USERNAME OPERATION TIME METHOD PARAMS IP CREATE_TIME
4---------- ---------- ---------- ---------- ------------------------------ ------------------------------ ---------- --------------
5 11 mrbird 执行方法一 6 com.springboot.controller.Test name: KangKang 127.0.0.1 08-12月-17
6 Controller.methodOne()
7
8 12 mrbird 执行方法二 2000 com.springboot.controller.Test 127.0.0.1 08-12月-17
9 Controller.methodTwo()
10
11 13 mrbird 执行方法三 0 com.springboot.controller.Test name: Mike age: 25 127.0.0.1 08-12月-17
12 Controller.methodThree()