Spring Boot(十)使用@Async实现异步调用
2016-11-14 12:41
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项目GitHub地址 :
https://github.com/FrameReserve/TrainingBoot
Spring Boot(十)使用@Async实现异步调用 ,标记地址: https://github.com/FrameReserve/TrainingBoot/releases/tag/0.0.10
Spring Boot启动类,增加@EnableAsync注解配置:
src/main/java/com/training/SpringBootServlet.java
package com.training;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.scheduling.annotation.EnableAsync;
@SpringBootApplication
@EnableAsync
public class SpringBootServlet extends SpringBootServletInitializer {
// jar启动
public static void main(String[] args) {
SpringApplication.run(SpringBootServlet.class, args);
}
// tomcat war启动
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(SpringBootServlet.class);
}
}
测试:
增加异步方法Service,线程休眠:
package com.training.async.service.impl;
import java.util.Random;
import java.util.concurrent.Future;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.annotation.AsyncResult;
import org.springframework.stereotype.Service;
import com.training.async.service.DemoAsyncService;
@Service
public class DemoAsyncServiceImpl implements DemoAsyncService {
public static Random random =new Random();
@Async
public Future<String> doTaskOne() throws Exception {
System.out.println("开始做任务一");
long start = System.currentTimeMillis();
Thread.sleep(random.nextInt(10000));
long end = System.currentTimeMillis();
System.out.println("完成任务一,耗时:" + (end - start) + "毫秒");
return new AsyncResult<>("任务一完成");
}
@Async
public Future<String> doTaskTwo() throws Exception {
System.out.println("开始做任务二");
long start = System.currentTimeMillis();
Thread.sleep(random.nextInt(10000));
long end = System.currentTimeMillis();
System.out.println("完成任务二,耗时:" + (end - start) + "毫秒");
return new AsyncResult<>("任务二完成");
}
@Async
public Future<String> doTaskThree() throws Exception {
System.out.println("开始做任务三");
long start = System.currentTimeMillis();
Thread.sleep(random.nextInt(10000));
long end = System.currentTimeMillis();
System.out.println("完成任务三,耗时:" + (end - start) + "毫秒");
return new AsyncResult<>("任务三完成");
}
}
调用异步测试测试,查看控制台输出执行顺序:
package com.training.async.controller;
import io.swagger.annotations.ApiOperation;
import java.util.concurrent.Future;
import javax.annotation.Resource;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.training.async.service.DemoAsyncService;
import com.training.core.dto.ResultDataDto;
@RestController
@RequestMapping(value="/async")
public class DemoAsyncController {
@Resource
private DemoAsyncService demoAsyncService;
/**
* 测试异步方法调用顺序
*/
@ApiOperation(value="测试异步方法调用顺序", notes="getEntityById")
@RequestMapping(value = "/getTestDemoAsync", method = RequestMethod.GET)
public @ResponseBody ResultDataDto getEntityById() throws Exception {
long start = System.currentTimeMillis();
Future<String> task1 = demoAsyncService.doTaskOne();
Future<String> task2 = demoAsyncService.doTaskTwo();
Future<String> task3 = demoAsyncService.doTaskThree();
while(true) {
if(task1.isDone() && task2.isDone() && task3.isDone()) {
// 三个任务都调用完成,退出循环等待
break;
}
Thread.sleep(1000);
}
long end = System.currentTimeMillis();
System.out.println("任务全部完成,总耗时:" + (end - start) + "毫秒");
return ResultDataDto.addSuccess();
}
}
https://github.com/FrameReserve/TrainingBoot
Spring Boot(十)使用@Async实现异步调用 ,标记地址: https://github.com/FrameReserve/TrainingBoot/releases/tag/0.0.10
Spring Boot启动类,增加@EnableAsync注解配置:
src/main/java/com/training/SpringBootServlet.java
package com.training;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.scheduling.annotation.EnableAsync;
@SpringBootApplication
@EnableAsync
public class SpringBootServlet extends SpringBootServletInitializer {
// jar启动
public static void main(String[] args) {
SpringApplication.run(SpringBootServlet.class, args);
}
// tomcat war启动
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(SpringBootServlet.class);
}
}
测试:
增加异步方法Service,线程休眠:
package com.training.async.service.impl;
import java.util.Random;
import java.util.concurrent.Future;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.annotation.AsyncResult;
import org.springframework.stereotype.Service;
import com.training.async.service.DemoAsyncService;
@Service
public class DemoAsyncServiceImpl implements DemoAsyncService {
public static Random random =new Random();
@Async
public Future<String> doTaskOne() throws Exception {
System.out.println("开始做任务一");
long start = System.currentTimeMillis();
Thread.sleep(random.nextInt(10000));
long end = System.currentTimeMillis();
System.out.println("完成任务一,耗时:" + (end - start) + "毫秒");
return new AsyncResult<>("任务一完成");
}
@Async
public Future<String> doTaskTwo() throws Exception {
System.out.println("开始做任务二");
long start = System.currentTimeMillis();
Thread.sleep(random.nextInt(10000));
long end = System.currentTimeMillis();
System.out.println("完成任务二,耗时:" + (end - start) + "毫秒");
return new AsyncResult<>("任务二完成");
}
@Async
public Future<String> doTaskThree() throws Exception {
System.out.println("开始做任务三");
long start = System.currentTimeMillis();
Thread.sleep(random.nextInt(10000));
long end = System.currentTimeMillis();
System.out.println("完成任务三,耗时:" + (end - start) + "毫秒");
return new AsyncResult<>("任务三完成");
}
}
调用异步测试测试,查看控制台输出执行顺序:
package com.training.async.controller;
import io.swagger.annotations.ApiOperation;
import java.util.concurrent.Future;
import javax.annotation.Resource;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.training.async.service.DemoAsyncService;
import com.training.core.dto.ResultDataDto;
@RestController
@RequestMapping(value="/async")
public class DemoAsyncController {
@Resource
private DemoAsyncService demoAsyncService;
/**
* 测试异步方法调用顺序
*/
@ApiOperation(value="测试异步方法调用顺序", notes="getEntityById")
@RequestMapping(value = "/getTestDemoAsync", method = RequestMethod.GET)
public @ResponseBody ResultDataDto getEntityById() throws Exception {
long start = System.currentTimeMillis();
Future<String> task1 = demoAsyncService.doTaskOne();
Future<String> task2 = demoAsyncService.doTaskTwo();
Future<String> task3 = demoAsyncService.doTaskThree();
while(true) {
if(task1.isDone() && task2.isDone() && task3.isDone()) {
// 三个任务都调用完成,退出循环等待
break;
}
Thread.sleep(1000);
}
long end = System.currentTimeMillis();
System.out.println("任务全部完成,总耗时:" + (end - start) + "毫秒");
return ResultDataDto.addSuccess();
}
}
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