详解线程interrupt（）方法

　　线程的 interrupt()方法只是设置线程的中断标记，当对处于阻塞状态的线程调用interrupt方法时（处于阻塞状态的线程是调用sleep, wait, join 的线程)，会抛出InterruptException异常，而这个异常会清除中断标记。正常运行的线程调用interrupt()不会清除中断标记。
　　通过interrupt()我们可以优雅的结束一个线程；有人会说stop()也可以呀，但是stop会出现一种情况，如果线程锁住了共享资源，那么当它调用stop被杀死后就再也没有机会释放锁了，其它线程将永远无法获取，所有这种结束线程的方式是不安全的也是不建议的。
　　优雅的结束线程是指，当线程死亡的时候，它可以做一些善后的事情。我们通过如下的代码就可以优雅的结束一个线程。package com.zd.demo;  public class Test01 {     public static void main(String[] args) {         Runnable runnable = new Runnable() {             public void run() {                 while (true){                     boolean b = Thread.currentThread().isInterrupted();                     //如果为真，就结束线程                     if (b){                         System.out.println(＂执行善后工作...＂);                         break;                     }                      try {                         Thread.sleep(1000);                         System.out.println(＂线程执行业务功能＂);                     } catch (InterruptedException e) {                         e.printStackTrace();                         Thread.currentThread().interrupt();                     }                 }             }         };         Thread t1 = new Thread(runnable,＂t1＂);         t1.start();         try {             Thread.sleep(4000);             t1.interrupt();         } catch (InterruptedException e) {             e.printStackTrace();         }     } } ＂C:Program FilesJavajdk1.8.0_101binjava＂ -javaagent:D:BaiduNetdiskDownloadIDEAIDEA安装包ideaIU-2017.3.3.winlibidea_rt.jar=6134:D:BaiduNetdiskDownloadIDEAIDEA安装包ideaIU-2017.3.3.winbin -Dfile.encoding=UTF-8 -classpath ＂C:Program FilesJavajdk1.8.0_101jrelibcharsets.jar;C:Program FilesJavajdk1.8.0_101jrelibdeploy.jar;C:Program FilesJavajdk1.8.0_101jrelibextaccess-bridge-64.jar;C:Program FilesJavajdk1.8.0_101jrelibextcldrdata.jar;C:Program FilesJavajdk1.8.0_101jrelibextdnsns.jar;C:Program FilesJavajdk1.8.0_101jrelibextjaccess.jar;C:Program FilesJavajdk1.8.0_101jrelibextjfxrt.jar;C:Program FilesJavajdk1.8.0_101jrelibextlocaledata.jar;C:Program FilesJavajdk1.8.0_101jrelibext ashorn.jar;C:Program FilesJavajdk1.8.0_101jrelibextsunec.jar;C:Program FilesJavajdk1.8.0_101jrelibextsunjce_provider.jar;C:Program FilesJavajdk1.8.0_101jrelibextsunmscapi.jar;C:Program FilesJavajdk1.8.0_101jrelibextsunpkcs11.jar;C:Program FilesJavajdk1.8.0_101jrelibextzipfs.jar;C:Program FilesJavajdk1.8.0_101jrelibjavaws.jar;C:Program FilesJavajdk1.8.0_101jrelibjce.jar;C:Program FilesJavajdk1.8.0_101jrelibjfr.jar;C:Program FilesJavajdk1.8.0_101jrelibjfxswt.jar;C:Program FilesJavajdk1.8.0_101jrelibjsse.jar;C:Program FilesJavajdk1.8.0_101jrelibmanagement-agent.jar;C:Program FilesJavajdk1.8.0_101jrelibplugin.jar;C:Program FilesJavajdk1.8.0_101jrelibresources.jar;C:Program FilesJavajdk1.8.0_101jrelibrt.jar;C:UserszhaodongIdeaProjectsboot1demo	argetclasses;C:Userszhaodong.m2repositoryorgspringframeworkbootspring-boot-starter-web2.5.5spring-boot-starter-web-2.5.5.jar;C:Userszhaodong.m2repositoryorgspringframeworkbootspring-boot-starter2.5.5spring-boot-starter-2.5.5.jar;C:Userszhaodong.m2repositoryorgspringframeworkbootspring-boot2.5.5spring-boot-2.5.5.jar;C:Userszhaodong.m2repositoryorgspringframeworkbootspring-boot-autoconfigure2.5.5spring-boot-autoconfigure-2.5.5.jar;C:Userszhaodong.m2repositoryorgspringframeworkbootspring-boot-starter-logging2.5.5spring-boot-starter-logging-2.5.5.jar;C:Userszhaodong.m2repositorychqoslogbacklogback-classic1.2.6logback-classic-1.2.6.jar;C:Userszhaodong.m2repositorychqoslogbacklogback-core1.2.6logback-core-1.2.6.jar;C:Userszhaodong.m2repositoryorgapachelogginglog4jlog4j-to-slf4j2.14.1log4j-to-slf4j-2.14.1.jar;C:Userszhaodong.m2repositoryorgapachelogginglog4jlog4j-api2.14.1log4j-api-2.14.1.jar;C:Userszhaodong.m2repositoryorgslf4jjul-to-slf4j1.7.32jul-to-slf4j-1.7.32.jar;C:Userszhaodong.m2repositoryjakartaannotationjakarta.annotation-api1.3.5jakarta.annotation-api-1.3.5.jar;C:Userszhaodong.m2repositoryorgyamlsnakeyaml1.28snakeyaml-1.28.jar;C:Userszhaodong.m2repositoryorgspringframeworkbootspring-boot-starter-json2.5.5spring-boot-starter-json-2.5.5.jar;C:Userszhaodong.m2repositorycomfasterxmljacksoncorejackson-databind2.12.5jackson-databind-2.12.5.jar;C:Userszhaodong.m2repositorycomfasterxmljacksoncorejackson-annotations2.12.5jackson-annotations-2.12.5.jar;C:Userszhaodong.m2repositorycomfasterxmljacksoncorejackson-core2.12.5jackson-core-2.12.5.jar;C:Userszhaodong.m2repositorycomfasterxmljacksondatatypejackson-datatype-jdk82.12.5jackson-datatype-jdk8-2.12.5.jar;C:Userszhaodong.m2repositorycomfasterxmljacksondatatypejackson-datatype-jsr3102.12.5jackson-datatype-jsr310-2.12.5.jar;C:Userszhaodong.m2repositorycomfasterxmljacksonmodulejackson-module-parameter-names2.12.5jackson-module-parameter-names-2.12.5.jar;C:Userszhaodong.m2repositoryorgspringframeworkbootspring-boot-starter-tomcat2.5.5spring-boot-starter-tomcat-2.5.5.jar;C:Userszhaodong.m2repositoryorgapache	omcatembed	omcat-embed-core9.0.53	omcat-embed-core-9.0.53.jar;C:Userszhaodong.m2repositoryorgapache	omcatembed	omcat-embed-el9.0.53	omcat-embed-el-9.0.53.jar;C:Userszhaodong.m2repositoryorgapache	omcatembed	omcat-embed-websocket9.0.53	omcat-embed-websocket-9.0.53.jar;C:Userszhaodong.m2repositoryorgspringframeworkspring-web5.3.10spring-web-5.3.10.jar;C:Userszhaodong.m2repositoryorgspringframeworkspring-beans5.3.10spring-beans-5.3.10.jar;C:Userszhaodong.m2repositoryorgspringframeworkspring-webmvc5.3.10spring-webmvc-5.3.10.jar;C:Userszhaodong.m2repositoryorgspringframeworkspring-aop5.3.10spring-aop-5.3.10.jar;C:Userszhaodong.m2repositoryorgspringframeworkspring-context5.3.10spring-context-5.3.10.jar;C:Userszhaodong.m2repositoryorgspringframeworkspring-expression5.3.10spring-expression-5.3.10.jar;C:Userszhaodong.m2repositoryorgslf4jslf4j-api1.7.32slf4j-api-1.7.32.jar;C:Userszhaodong.m2repositoryorgspringframeworkspring-core5.3.10spring-core-5.3.10.jar;C:Userszhaodong.m2repositoryorgspringframeworkspring-jcl5.3.10spring-jcl-5.3.10.jar＂ com.zd.demo.Test01 线程执行业务功能 线程执行业务功能 线程执行业务功能 java.lang.InterruptedException: sleep interrupted 执行善后工作... 	at java.lang.Thread.sleep(Native Method) 	at com.zd.demo.Test01$1.run(Test01.java:20) 	at java.lang.Thread.run(Thread.java:745)  Process finished with exit code 0