笔记：Spring Boot-Java Config 自定义异步

mvn 创建项目

mvn archetype:generate -DgroupId=com.denk -DartifactId=task-demo -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

pom.xml

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.denk</groupId>
    <artifactId>task-demo</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>task-demo</name>
    <url>http://maven.apache.org</url>
    <dependencies>
        <!--Web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

    <!-- Spring Boot-->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>1.5.8.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>

导入IDEA项目结构

入口类

package com.denk;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class App {
    public static void main(String[] args) {
        SpringApplication.run(App.class);
    }
}

控制器

package com.denk.controller;

import com.denk.service.AsyncService;
import com.denk.service.CommonService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class DemoController {
    @Autowired
    private CommonService commonService;
    @Autowired
    private AsyncService asyncService;

    @RequestMapping("/demo")
    public String demo() {
        commonService.dealCommonService_1();
        asyncService.dealAsyncService_1();
        asyncService.dealAsyncService_2();
        asyncService.dealAsyncService_3();
        commonService.dealCommonService_2();
        return "SUCCESS";
    }
}

普通业务类

package com.denk.service;

import org.springframework.stereotype.Service;

@Service
public class CommonService {
    public void dealCommonService_1() {
        System.out.println("处理普通业务1111...");
    }

    public void dealCommonService_2() {
        System.out.println("处理普通业务2222...");
    }
}

异步业务处理类

package com.denk.service;

import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

@Service

public class AsyncService {

    @Async("executor_1")
    public void dealAsyncService_1() {
        try {
            Thread.sleep(3000);
        } catch (Exception e) {
            e.printStackTrace();
        }

        System.out.println("处理异步业务111..." + Thread.currentThread().getName());
        throw new IllegalArgumentException("异步业务异常111...");
    }

    @Async("executor_2")
    public void dealAsyncService_2() {
        try {
            Thread.sleep(3000);
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println("处理异步业务222..." + Thread.currentThread().getName());
        throw new IllegalArgumentException("异步业务异常222...");
    }

    @Async
    public void dealAsyncService_3() {
        try {
            Thread.sleep(3000);
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println("处理异步业务333..." + Thread.currentThread().getName());
        throw new IllegalArgumentException("异步业务异常333...");
    }
}

配置类

package com.denk.config;

import org.springframework.aop.interceptor.AsyncUncaughtExceptionHandler;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.AsyncConfigurer;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.lang.reflect.Method;
import java.util.concurrent.Executor;

@Configuration
@EnableAsync
public class AsyncConfig {

    @Bean
    @Qualifier("executor_1")
    public Executor getExecutor_1() {
        ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
        taskExecutor.setCorePoolSize(5);
        taskExecutor.setMaxPoolSize(20);
        taskExecutor.setQueueCapacity(100);
        taskExecutor.setThreadNamePrefix("executor_1_");
        taskExecutor.initialize();
        return taskExecutor;
    }

    @Bean
    @Qualifier("executor_2")
    public Executor getExecutor_2() {
        ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
        taskExecutor.setCorePoolSize(10);
        taskExecutor.setMaxPoolSize(40);
        taskExecutor.setQueueCapacity(200);
        taskExecutor.setThreadNamePrefix("executor_2_");
        taskExecutor.initialize();
        return taskExecutor;
    }

    @Bean
    public AsyncConfigurer getAsyncConfig() {
        return new AsyncConfigurer() {
            public Executor getAsyncExecutor() {
                ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
                taskExecutor.setCorePoolSize(2);
                taskExecutor.setMaxPoolSize(5);
                taskExecutor.setQueueCapacity(10);
                taskExecutor.setThreadNamePrefix("executor_default_");
                taskExecutor.initialize();
                return taskExecutor;
            }

            public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
                return new AsyncUncaughtExceptionHandler() {
                    public void handleUncaughtException(Throwable throwable, Method method, Object... objects) {
                        System.out.println("捕获异步异常...#methodName:" + method.getName() +
                                "#objectsLength:" + objects.length +
                                "#throwable:" + throwable.toString());
                    }
                };
            }
        };
    }
}

说明

1. 配置类中的@Bean AsyncConfigurer是默认配置，没有指明Executor的@Async默认使用其定义的Executor，以及所有的异步异常在其定义的AsyncUncaughtExceptionHandler被捕获
2. 多线程池使用@Qualifier("executor_1")标识，由@Async("executor_1")配套使用
3. 浏览器访问http://localhost:8080/demo，查看控制台打印结果