SimpleTimeLimiter和Callable回调函数实现超时控制
使用SimpleTimeLimiter和Callable回调函数
package com.testcode.timeout;
import com.google.common.util.concurrent.SimpleTimeLimiter;
import java.util.concurrent.Callable;
import java.util.concurrent.TimeUnit;
public class TimeOutTest{
public void test02(){
System.out.println("获取学生姓名------开始");
SimpleTimeLimiter simpleTimeLimiter=new SimpleTimeLimiter();
Callable<Integer> task=new Callable<Integer>(){
@Override
public Integer call()throws Exception{
try{
TimeUnit.SECONDS.sleep(1);
System.out.println("callable完成");
}catch(Exception e){
}
return 1;
}
};
Integer rtn = -1;
try{
rtn = simpleTimeLimiter.callWithTimeout(task,3,TimeUnit.SECONDS,true);
}catch(Exception e){
System.out.println("获取姓名调用异常:{}" + e.getMessage());
}
System.out.println("获取学生姓名------结束, rtn="+rtn);
}
public static void main(String[] args) {
TimeOutTest testImpl = new TimeOutTest();
testImpl.test02();
}
}输出如下：
"D:\Program Files\Java\jdk1.8.0_181\bin\java.exe" "-javaagent:D:\Program Files\IntelliJ IDEA 2020.1.4\lib\idea_rt.jar=1206:D:\Program Files\IntelliJ IDEA 2020.1.4\bin" -Dfile.encoding=UTF-8 -classpath "D:\Program Files\Java\jdk1.8.0_181\jre\lib\charsets.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\deploy.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\access-bridge-64.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\cldrdata.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\dnsns.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\jaccess.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\jfxrt.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\localedata.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\nashorn.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunec.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunjce_provider.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunmscapi.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunpkcs11.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\zipfs.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\javaws.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\jce.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\jfr.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\jfxswt.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\jsse.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\management-agent.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\plugin.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\resources.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\rt.jar;E:\AsiaWork\workspace\SpringBootFjm\target\classes;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot-starter-web\1.5.8.RELEASE\spring-boot-starter-web-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot-starter\1.5.8.RELEASE\spring-boot-starter-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot\1.5.8.RELEASE\spring-boot-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot-autoconfigure\1.5.8.RELEASE\spring-boot-autoconfigure-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot-starter-logging\1.5.8.RELEASE\spring-boot-starter-logging-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\ch\qos\logback\logback-classic\1.1.11\logback-classic-1.1.11.jar;D:\apache-maven-3.8.1\Repository\ch\qos\logback\logback-core\1.1.11\logback-core-1.1.11.jar;D:\apache-maven-3.8.1\Repository\org\slf4j\jcl-over-slf4j\1.7.25\jcl-over-slf4j-1.7.25.jar;D:\apache-maven-3.8.1\Repository\org\slf4j\jul-to-slf4j\1.7.25\jul-to-slf4j-1.7.25.jar;D:\apache-maven-3.8.1\Repository\org\slf4j\log4j-over-slf4j\1.7.25\log4j-over-slf4j-1.7.25.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-core\4.3.12.RELEASE\spring-core-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\yaml\snakeyaml\1.17\snakeyaml-1.17.jar;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot-starter-tomcat\1.5.8.RELEASE\spring-boot-starter-tomcat-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\apache\tomcat\embed\tomcat-embed-core\8.5.23\tomcat-embed-core-8.5.23.jar;D:\apache-maven-3.8.1\Repository\org\apache\tomcat\tomcat-annotations-api\8.5.23\tomcat-annotations-api-8.5.23.jar;D:\apache-maven-3.8.1\Repository\org\apache\tomcat\embed\tomcat-embed-el\8.5.23\tomcat-embed-el-8.5.23.jar;D:\apache-maven-3.8.1\Repository\org\apache\tomcat\embed\tomcat-embed-websocket\8.5.23\tomcat-embed-websocket-8.5.23.jar;D:\apache-maven-3.8.1\Repository\org\hibernate\hibernate-validator\5.3.5.Final\hibernate-validator-5.3.5.Final.jar;D:\apache-maven-3.8.1\Repository\javax\validation\validation-api\1.1.0.Final\validation-api-1.1.0.Final.jar;D:\apache-maven-3.8.1\Repository\org\jboss\logging\jboss-logging\3.3.1.Final\jboss-logging-3.3.1.Final.jar;D:\apache-maven-3.8.1\Repository\com\fasterxml\classmate\1.3.4\classmate-1.3.4.jar;D:\apache-maven-3.8.1\Repository\com\fasterxml\jackson\core\jackson-databind\2.8.10\jackson-databind-2.8.10.jar;D:\apache-maven-3.8.1\Repository\com\fasterxml\jackson\core\jackson-annotations\2.8.0\jackson-annotations-2.8.0.jar;D:\apache-maven-3.8.1\Repository\com\fasterxml\jackson\core\jackson-core\2.8.10\jackson-core-2.8.10.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-web\4.3.12.RELEASE\spring-web-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-aop\4.3.12.RELEASE\spring-aop-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-beans\4.3.12.RELEASE\spring-beans-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-context\4.3.12.RELEASE\spring-context-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-webmvc\4.3.12.RELEASE\spring-webmvc-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-expression\4.3.12.RELEASE\spring-expression-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\apache\curator\curator-framework\2.9.1\curator-framework-2.9.1.jar;D:\apache-maven-3.8.1\Repository\org\apache\curator\curator-client\2.9.1\curator-client-2.9.1.jar;D:\apache-maven-3.8.1\Repository\org\apache\zookeeper\zookeeper\3.4.6\zookeeper-3.4.6.jar;D:\apache-maven-3.8.1\Repository\log4j\log4j\1.2.16\log4j-1.2.16.jar;D:\apache-maven-3.8.1\Repository\jline\jline\0.9.94\jline-0.9.94.jar;D:\apache-maven-3.8.1\Repository\io\netty\netty\3.7.0.Final\netty-3.7.0.Final.jar;D:\apache-maven-3.8.1\Repository\com\google\guava\guava\16.0.1\guava-16.0.1.jar;D:\apache-maven-3.8.1\Repository\org\slf4j\slf4j-api\1.7.25\slf4j-api-1.7.25.jar;D:\apache-maven-3.8.1\Repository\org\apache\curator\curator-recipes\2.9.1\curator-recipes-2.9.1.jar" com.testcode.timeout.TimeOutTest
获取学生姓名------开始
callable完成
获取学生姓名------结束, rtn=1
Process finished with exit code 0//这行在60秒之后才打印，主线程结束 由于这里使用默认构造函数创建 SimpleTimeLimiter 时 - 他会创建您无法控制的自己的 Executors.newCachedThreadPool()，所以要等待60秒之后主程序才会结束
... Threads that have not been used for sixty seconds are terminated and removed from the cache....
主动关闭ExecutorService
如果您创建自己的 ExecutorService 并使用此 executorService 创建 SimpleTimeLimiter，那么您可以在关闭 Hook 上关闭 executorService。
在执行代码完成后调用
System.out.println("获取学生姓名------结束, rtn="+rtn);
System.out.println("关闭ExecutorService开始");
shutdown(executor);
System.out.println("关闭ExecutorService完成");public void shutdown(ExecutorService executor) {
if (executor == null || executor.isShutdown()) {
return;
}
executor.shutdown();
try {
System.out.println("awaitTermination开始");
executor.awaitTermination(5, TimeUnit.SECONDS);
System.out.println("awaitTermination完成");
} catch (InterruptedException e) {
System.out.println("Interrupted during executor termination." + e);
Thread.currentThread().interrupt();
}
executor.shutdownNow();
}日志打印：
"D:\Program Files\Java\jdk1.8.0_181\bin\java.exe" "-javaagent:D:\Program Files\IntelliJ IDEA 2020.1.4\lib\idea_rt.jar=8414:D:\Program Files\IntelliJ IDEA 2020.1.4\bin" -Dfile.encoding=UTF-8 -classpath "D:\Program Files\Java\jdk1.8.0_181\jre\lib\charsets.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\deploy.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\access-bridge-64.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\cldrdata.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\dnsns.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\jaccess.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\jfxrt.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\localedata.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\nashorn.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunec.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunjce_provider.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunmscapi.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunpkcs11.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\zipfs.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\javaws.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\jce.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\jfr.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\jfxswt.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\jsse.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\management-agent.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\plugin.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\resources.jar;D:\Program Files\Java\jdk1.8.0_181\jre\lib\rt.jar;E:\AsiaWork\workspace\SpringBootFjm\target\classes;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot-starter-web\1.5.8.RELEASE\spring-boot-starter-web-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot-starter\1.5.8.RELEASE\spring-boot-starter-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot\1.5.8.RELEASE\spring-boot-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot-autoconfigure\1.5.8.RELEASE\spring-boot-autoconfigure-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot-starter-logging\1.5.8.RELEASE\spring-boot-starter-logging-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\ch\qos\logback\logback-classic\1.1.11\logback-classic-1.1.11.jar;D:\apache-maven-3.8.1\Repository\ch\qos\logback\logback-core\1.1.11\logback-core-1.1.11.jar;D:\apache-maven-3.8.1\Repository\org\slf4j\jcl-over-slf4j\1.7.25\jcl-over-slf4j-1.7.25.jar;D:\apache-maven-3.8.1\Repository\org\slf4j\jul-to-slf4j\1.7.25\jul-to-slf4j-1.7.25.jar;D:\apache-maven-3.8.1\Repository\org\slf4j\log4j-over-slf4j\1.7.25\log4j-over-slf4j-1.7.25.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-core\4.3.12.RELEASE\spring-core-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\yaml\snakeyaml\1.17\snakeyaml-1.17.jar;D:\apache-maven-3.8.1\Repository\org\springframework\boot\spring-boot-starter-tomcat\1.5.8.RELEASE\spring-boot-starter-tomcat-1.5.8.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\apache\tomcat\embed\tomcat-embed-core\8.5.23\tomcat-embed-core-8.5.23.jar;D:\apache-maven-3.8.1\Repository\org\apache\tomcat\tomcat-annotations-api\8.5.23\tomcat-annotations-api-8.5.23.jar;D:\apache-maven-3.8.1\Repository\org\apache\tomcat\embed\tomcat-embed-el\8.5.23\tomcat-embed-el-8.5.23.jar;D:\apache-maven-3.8.1\Repository\org\apache\tomcat\embed\tomcat-embed-websocket\8.5.23\tomcat-embed-websocket-8.5.23.jar;D:\apache-maven-3.8.1\Repository\org\hibernate\hibernate-validator\5.3.5.Final\hibernate-validator-5.3.5.Final.jar;D:\apache-maven-3.8.1\Repository\javax\validation\validation-api\1.1.0.Final\validation-api-1.1.0.Final.jar;D:\apache-maven-3.8.1\Repository\org\jboss\logging\jboss-logging\3.3.1.Final\jboss-logging-3.3.1.Final.jar;D:\apache-maven-3.8.1\Repository\com\fasterxml\classmate\1.3.4\classmate-1.3.4.jar;D:\apache-maven-3.8.1\Repository\com\fasterxml\jackson\core\jackson-databind\2.8.10\jackson-databind-2.8.10.jar;D:\apache-maven-3.8.1\Repository\com\fasterxml\jackson\core\jackson-annotations\2.8.0\jackson-annotations-2.8.0.jar;D:\apache-maven-3.8.1\Repository\com\fasterxml\jackson\core\jackson-core\2.8.10\jackson-core-2.8.10.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-web\4.3.12.RELEASE\spring-web-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-aop\4.3.12.RELEASE\spring-aop-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-beans\4.3.12.RELEASE\spring-beans-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-context\4.3.12.RELEASE\spring-context-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-webmvc\4.3.12.RELEASE\spring-webmvc-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\springframework\spring-expression\4.3.12.RELEASE\spring-expression-4.3.12.RELEASE.jar;D:\apache-maven-3.8.1\Repository\org\apache\curator\curator-framework\2.9.1\curator-framework-2.9.1.jar;D:\apache-maven-3.8.1\Repository\org\apache\curator\curator-client\2.9.1\curator-client-2.9.1.jar;D:\apache-maven-3.8.1\Repository\org\apache\zookeeper\zookeeper\3.4.6\zookeeper-3.4.6.jar;D:\apache-maven-3.8.1\Repository\log4j\log4j\1.2.16\log4j-1.2.16.jar;D:\apache-maven-3.8.1\Repository\jline\jline\0.9.94\jline-0.9.94.jar;D:\apache-maven-3.8.1\Repository\io\netty\netty\3.7.0.Final\netty-3.7.0.Final.jar;D:\apache-maven-3.8.1\Repository\com\google\guava\guava\16.0.1\guava-16.0.1.jar;D:\apache-maven-3.8.1\Repository\org\slf4j\slf4j-api\1.7.25\slf4j-api-1.7.25.jar;D:\apache-maven-3.8.1\Repository\org\apache\curator\curator-recipes\2.9.1\curator-recipes-2.9.1.jar" com.testcode.timeout.TimeOutTest
获取学生姓名------开始
callable完成
获取学生姓名------结束, rtn=1
关闭ExecutorService开始
awaitTermination开始
awaitTermination完成
关闭ExecutorService完成
Process finished with exit code 0其中showdown、shutdownNow、awaitTermination差别和使用参考
参考：
java - SimpleTimeLimiter 超时 - 关闭应用程序需要很长时间 - IT工具网 (coder.work)
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