Spring开启@Async异步(javaconfig配置)
在Spring中，基于@Async标注的方法，称之为异步方法；这些方法将在执行的时候，将会在独立的线程中被执行，调用者无需等待它的完成，即可继续其他的操作。
应用场景
- 某些耗时较长的而用户不需要等待该方法的处理结果
- 某些耗时较长的方法，后面的程序不需要用到这个方法的处理结果时
代码
创建AsyncTask
/**
* 异步任务
*
* @author Peng
*/
public class AsyncTask {
@Async
public void doAsyncTask() throws InterruptedException {
// 假设执行一个很耗时的任务
Thread.sleep(10 * 1000);
System.out.println("执行完成，我执行了10秒");
}
}
创建spring配置AppConfig
/**
* spring 配置
*
* @author Peng
*/
@Configuration
@EnableAsync
public class AppConfig {
/**
* 声明异步任务bean
*
* @return
*/
@Bean
public AsyncTask asyncTask() {
return new AsyncTask();
}
}
测试
/**
* 异步测试
*
* @author Peng
*/
public class AppTest {
public static void main(String[] args) throws InterruptedException {
ApplicationContext ctx = new AnnotationConfigApplicationContext(AppConfig.class);
AsyncTask task = ctx.getBean(AsyncTask.class);
task.doAsyncTask();
System.out.println("异步任务调用成功，返回客户端执行成功，异步任务继续执行");
}
}
执行结果
异步任务调用成功，返回客户端执行成功，异步任务继续执行
执行完成，我执行了10秒
从结果可以看出，异步任务测试成功！
Spring @Async Demo
模拟一个业务场景：系统新用户注册成功后，异步发送邮件。
Project Directory
Maven Dependency
<?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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.fool.springasync</groupId>
<artifactId>springasync</artifactId>
<name>springasync</name>
<packaging>war</packaging>
<version>1.0.0-BUILD-SNAPSHOT</version>
<properties>
<org.springframework-version>4.2.8.RELEASE</org.springframework-version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.1</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>19.0</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<!-- @Inject -->
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
<!-- Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- Test -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.10</version>
<configuration>
<additionalProjectnatures>
<projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
</additionalProjectnatures>
<additionalBuildcommands>
<buildcommand>org.springframework.ide.eclipse.core.springbuilder</buildcommand>
</additionalBuildcommands>
<downloadSources>true</downloadSources>
<downloadJavadocs>true</downloadJavadocs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<compilerArgument>-Xlint:all<<strong>本文来源gao@daima#com搞(%代@#码网</strong>;/compilerArgument>
<showWarnings>true</showWarnings>
<showDeprecation>true</showDeprecation>
</configuration>
</plugin>
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>9.3.11.v20160721</version>
<configuration>
<scanIntervalSeconds>10</scanIntervalSeconds>
<httpConnector>
<port>8888</port>
</httpConnector>
<webApp>
<contextPath>/springasync</contextPath>
</webApp>
</configuration>
</plugin>
</plugins>
</build>
</project>
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转载请注明原文链接：使用Spring开启@Async异步方式(javaconfig配置)
转载请注明原文链接：使用Spring开启@Async异步方式(javaconfig配置)
