Spring Boot AOP不適用於Maven

Question

我正在嘗試通過自定義注釋和“周圍”建議在Spring-boot中實現AOP。 我在GET api之前添加了注釋，但無法在Aspect中捕獲該功能。

pom.xml

 <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>5.0.7.RELEASE</version>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <scope>compile</scope>
        <version>1.8.12</version>
    </dependency>
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjrt</artifactId>
        <version>1.6.11</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-aop</artifactId>
        <version>2.0.3.RELEASE</version>
    </dependency>

HiveService.java

@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.METHOD })
public @interface HiveService{
//public String name() default "";
}

后續程序

@HiveService
@RequestMapping(value="rest/services/{pr 
oduct}", method = RequestMethod.GET, produces = "application/json; charset=UTF-8")
public String getFollowupCategoryList(@PathVariable String product) {
    LOGGER.info("[getFollowupCategoryList]: started again ");
}

HiveConsumer.java

@Aspect
@Component
public class HiveConsumer {


@Around("@annotation(com.abc.xyz.HiveService)")
public Object logExecutionTime(ProceedingJoinPoint joinPoint) throws Throwable {
    long start = System.currentTimeMillis();
    Logger LOGGER = LoggerFactory.getLogger(com.abc.xyz.FollowupController.class);
    LOGGER.info("Before");

    Object proceed = joinPoint.proceed();

    long executionTime = System.currentTimeMillis() - start;

    LOGGER.info(joinPoint.getSignature() + " executed in " + executionTime + "ms");
    return proceed;
}
}

Spring AOP的配置文件

@SpringBootApplication
@RestController
@EnableAspectJAutoProxy(proxyTargetClass = true)
public class ActivitiRestApplication extends 
SpringBootServletInitializer  {


public static void main(String[] args) throws Exception {
    SpringApplication.run(applicationClass, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder app) {
    return app.sources(applicationClass);
}

private static Class<ActivitiRestApplication> applicationClass = ActivitiRestApplication.class;

Answer 1

如果您在應用程序運行良好

• 將依賴項org.springframework.boot:spring-boot-starter-web:2.0.3.RELEASE到您的POM中，
• 刪除冗余的org.aspectj:aspectjrt因為它是org.aspectj:aspectjweaver的子集（並且您org.aspectj:aspectjweaver指定了不匹配的版本號），
• 在包含注釋方法的類中添加@RestController ，
• make方法getFollowupCategoryList(..)實際上返回一個字符串（在您的示例代碼中，它不返回任何內容，因此甚至不進行編譯）。

這是完整的MCVE的代碼固定版本，即包括程序包和類名。 為了進行此演示，我將日志記錄代碼更改為使用System.out ，以便將依賴關系降至最低。

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>de.scrum-master.stackoverflow</groupId>
  <artifactId>spring-boot-51512380</artifactId>
  <version>1.0-SNAPSHOT</version>

  <dependencies>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>5.0.7.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <scope>compile</scope>
      <version>1.8.12</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-aop</artifactId>
      <version>2.0.3.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
      <version>2.0.3.RELEASE</version>
      <scope>compile</scope>
    </dependency>
  </dependencies>
</project>

更新：實際上，您甚至可以將POM減少到：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>de.scrum-master.stackoverflow</groupId>
  <artifactId>spring-boot-51512380</artifactId>
  <version>1.0-SNAPSHOT</version>

  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-aop</artifactId>
      <version>2.0.3.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
      <version>2.0.3.RELEASE</version>
      <scope>compile</scope>
    </dependency>
  </dependencies>
</project>

package de.scrum_master.app;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.METHOD })
public @interface HiveService {
  //public String name() default "";
}

package de.scrum_master.app;

import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class SomeClass {
  @HiveService
  @RequestMapping(value = "rest/services/{product}", method = RequestMethod.GET, produces = "application/json; charset=UTF-8")
  public String getFollowupCategoryList(@PathVariable String product) {
    System.out.println("[getFollowupCategoryList]: started again");
    return "foo";
  }
}

package de.scrum_master.app;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
@EnableAspectJAutoProxy(proxyTargetClass = true)
public class ActivitiRestApplication extends SpringBootServletInitializer {
  private static Class<ActivitiRestApplication> applicationClass = ActivitiRestApplication.class;

  @Override
  protected SpringApplicationBuilder configure(SpringApplicationBuilder app) {
    return app.sources(applicationClass);
  }

  public static void main(String[] args) throws Exception {
    SpringApplication.run(applicationClass, args);
  }
}

package de.scrum_master.app;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class HiveConsumer {
  @Around("@annotation(de.scrum_master.app.HiveService)")
  public Object logExecutionTime(ProceedingJoinPoint joinPoint) throws Throwable {
    long start = System.currentTimeMillis();
    System.out.println("Before");
    Object proceed = joinPoint.proceed();
    long executionTime = System.currentTimeMillis() - start;
    System.out.println(joinPoint.getSignature() + " executed in " + executionTime + "ms");
    return proceed;
  }
}

現在，如果您運行該應用程序並在Web瀏覽器中打開URL http：// localhost：8080 / rest / services / something ，它將在瀏覽器中顯示foo ，並在控制台上顯示：

Before
[getFollowupCategoryList]: started again
String de.scrum_master.app.SomeClass.getFollowupCategoryList(String) executed in 2ms