zoukankan      html  css  js  c++  java
  • spring boot + quartz 集群

    spring boot bean配置:

    @Configuration
    public class QuartzConfig {
    	
    	@Value("${quartz.scheduler.instanceName}")
    	private String quartzInstanceName;
    	
    	@Value("${org.quartz.dataSource.myDS.driver}")
    	private String myDSDriver;
    	
    	@Value("${org.quartz.dataSource.myDS.URL}")
    	private String myDSURL;
    	
    	@Value("${org.quartz.dataSource.myDS.user}")
    	private String myDSUser;
    	
    	@Value("${org.quartz.dataSource.myDS.password}")
    	private String myDSPassword;
    	
    	@Value("${org.quartz.dataSource.myDS.maxConnections}")
    	private String myDSMaxConnections;
    	
    	
        /**
         * 设置属性
         * @return
         * @throws IOException
         */
        private Properties quartzProperties() throws IOException {
            Properties prop = new Properties();
            prop.put("quartz.scheduler.instanceName", quartzInstanceName);
            prop.put("org.quartz.scheduler.instanceId", "AUTO");
            prop.put("org.quartz.scheduler.skipUpdateCheck", "true");
            prop.put("org.quartz.scheduler.jmx.export", "true");
            
            prop.put("org.quartz.jobStore.class", "org.quartz.impl.jdbcjobstore.JobStoreTX");
            prop.put("org.quartz.jobStore.driverDelegateClass", "org.quartz.impl.jdbcjobstore.StdJDBCDelegate");
            prop.put("org.quartz.jobStore.dataSource", "quartzDataSource");
            prop.put("org.quartz.jobStore.tablePrefix", "QRTZ_");
            prop.put("org.quartz.jobStore.isClustered", "true");
            
            prop.put("org.quartz.jobStore.clusterCheckinInterval", "20000");
            prop.put("org.quartz.jobStore.dataSource", "myDS");
            prop.put("org.quartz.jobStore.maxMisfiresToHandleAtATime", "1");
            prop.put("org.quartz.jobStore.misfireThreshold", "120000");
            prop.put("org.quartz.jobStore.txIsolationLevelSerializable", "true");
            prop.put("org.quartz.jobStore.selectWithLockSQL", "SELECT * FROM {0}LOCKS WHERE LOCK_NAME = ? FOR UPDATE");
            
            prop.put("org.quartz.threadPool.class", "org.quartz.simpl.SimpleThreadPool");
            prop.put("org.quartz.threadPool.threadCount", "10");
            prop.put("org.quartz.threadPool.threadPriority", "5");
            prop.put("org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread", "true");
            
            prop.put("org.quartz.dataSource.myDS.driver", myDSDriver);
            prop.put("org.quartz.dataSource.myDS.URL", myDSURL);
            prop.put("org.quartz.dataSource.myDS.user", myDSUser);
            prop.put("org.quartz.dataSource.myDS.password", myDSPassword);
            System.out.println("myDSMaxConnections:" + myDSMaxConnections);
            prop.put("org.quartz.dataSource.myDS.maxConnections", myDSMaxConnections);
            
            prop.put("org.quartz.plugin.triggHistory.class", "org.quartz.plugins.history.LoggingJobHistoryPlugin");
            prop.put("org.quartz.plugin.shutdownhook.class", "org.quartz.plugins.management.ShutdownHookPlugin");
            prop.put("org.quartz.plugin.shutdownhook.cleanShutdown", "true");
            return prop;
        }
        
        @Bean  
        public SchedulerFactoryBean schedulerFactoryBean(@Qualifier("dialogJobTrigger") Trigger cronJobTrigger) throws IOException {  
            SchedulerFactoryBean factory = new SchedulerFactoryBean();  
            // this allows to update triggers in DB when updating settings in config file:  
            //用于quartz集群,QuartzScheduler 启动时更新己存在的Job,这样就不用每次修改targetObject后删除qrtz_job_details表对应记录了  
            factory.setOverwriteExistingJobs(true);  
            //用于quartz集群,加载quartz数据源  
            //factory.setDataSource(dataSource);    
            //QuartzScheduler 延时启动,应用启动完10秒后 QuartzScheduler 再启动  
            factory.setStartupDelay(10);
            //用于quartz集群,加载quartz数据源配置  
            factory.setQuartzProperties(quartzProperties());
            factory.setAutoStartup(true);
            factory.setApplicationContextSchedulerContextKey("applicationContext");
            //注册触发器  
            factory.setTriggers(cronJobTrigger);
         //直接使用配置文件 // factory.setConfigLocation(new FileSystemResource(this.getClass().getResource("/quartz.properties").getPath())); return factory; } /** * 加载job * @return */ @Bean public JobDetailFactoryBean updateDialogStatusJobDetail() { return createJobDetail(InvokingJobDetailDetailFactory.class, "updateDialogStatusGroup", "dialogJob"); } /** * 加载触发器 * @param jobDetail * @return */ @Bean(name = "dialogJobTrigger") public CronTriggerFactoryBean dialogStatusJobTrigger(@Qualifier("updateDialogStatusJobDetail") JobDetail jobDetail) { return dialogStatusTrigger(jobDetail, "0 0 0/1 * * ?"); } /** * 创建job工厂 * @param jobClass * @param groupName * @param targetObject * @return */ private static JobDetailFactoryBean createJobDetail(Class<?> jobClass, String groupName, String targetObject) { JobDetailFactoryBean factoryBean = new JobDetailFactoryBean(); factoryBean.setJobClass(jobClass); factoryBean.setDurability(true); factoryBean.setRequestsRecovery(true); factoryBean.setGroup(groupName); Map<String, String> map = new HashMap<>(); map.put("targetObject", targetObject); map.put("targetMethod", "execute"); factoryBean.setJobDataAsMap(map); return factoryBean; } /** * 创建触发器工厂 * @param jobDetail * @param cronExpression * @return */ private static CronTriggerFactoryBean dialogStatusTrigger(JobDetail jobDetail, String cronExpression) { CronTriggerFactoryBean factoryBean = new CronTriggerFactoryBean(); factoryBean.setJobDetail(jobDetail); factoryBean.setCronExpression (cronExpression); return factoryBean; } }

      

    InvokingJobDetailDetailFactory对象:
    public class InvokingJobDetailDetailFactory extends QuartzJobBean{
    
    	// 计划任务所在类  
        private String targetObject;
      
        // 具体需要执行的计划任务  
        private String targetMethod;
        
        private ApplicationContext ctx;
        
    	@Override
    	protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
    		try {
                Object otargetObject = ctx.getBean(targetObject);
                Method m = null;  
                try {  
                    m = otargetObject.getClass().getMethod(targetMethod);  
                    m.invoke(otargetObject);  
                } catch (SecurityException e) {  
                    e.printStackTrace();  
                } catch (NoSuchMethodException e) {  
                    e.printStackTrace();  
                }  
            } catch (Exception e) {  
                throw new JobExecutionException(e);  
            } 
    	}
    
        public void setApplicationContext(ApplicationContext applicationContext) {  
            this.ctx = applicationContext;  
        }  
      
        public void setTargetObject(String targetObject) {  
            this.targetObject = targetObject;  
        }  
      
        public void setTargetMethod(String targetMethod) {  
            this.targetMethod = targetMethod;  
        }
    }
    

     备注:set方法不能少,setApplicationContext中的applicationContext与factory.setApplicationContextSchedulerContextKey("applicationContext")填入的值有关,其原理由InvokingJobDetailDetailFactory父类中的BeanWrapper实现。

    sql脚本:--

    -- 表的结构 `qrtz_blob_triggers`
    --
    
    CREATE TABLE IF NOT EXISTS `qrtz_blob_triggers` (
      `SCHED_NAME` varchar(120) NOT NULL,
      `TRIGGER_NAME` varchar(120) NOT NULL,
      `TRIGGER_GROUP` varchar(120) NOT NULL,
      `BLOB_DATA` blob
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    
    -- --------------------------------------------------------
    
    --
    -- 表的结构 `qrtz_calendars`
    --
    
    CREATE TABLE IF NOT EXISTS `qrtz_calendars` (
      `SCHED_NAME` varchar(120) NOT NULL,
      `CALENDAR_NAME` varchar(120) NOT NULL,
      `CALENDAR` blob NOT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    
    -- --------------------------------------------------------
    
    --
    -- 表的结构 `qrtz_cron_triggers`
    --
    
    CREATE TABLE IF NOT EXISTS `qrtz_cron_triggers` (
      `SCHED_NAME` varchar(120) NOT NULL,
      `TRIGGER_NAME` varchar(120) NOT NULL,
      `TRIGGER_GROUP` varchar(120) NOT NULL,
      `CRON_EXPRESSION` varchar(120) NOT NULL,
      `TIME_ZONE_ID` varchar(80) DEFAULT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    
    -- --------------------------------------------------------
    
    --
    -- 表的结构 `qrtz_fired_triggers`
    --
    
    CREATE TABLE IF NOT EXISTS `qrtz_fired_triggers` (
      `SCHED_NAME` varchar(120) NOT NULL,
      `ENTRY_ID` varchar(95) NOT NULL,
      `TRIGGER_NAME` varchar(120) NOT NULL,
      `TRIGGER_GROUP` varchar(120) NOT NULL,
      `INSTANCE_NAME` varchar(120) NOT NULL,
      `FIRED_TIME` bigint(13) NOT NULL,
      `SCHED_TIME` bigint(13) NOT NULL,
      `PRIORITY` int(11) NOT NULL,
      `STATE` varchar(16) NOT NULL,
      `JOB_NAME` varchar(120) DEFAULT NULL,
      `JOB_GROUP` varchar(120) DEFAULT NULL,
      `IS_NONCONCURRENT` varchar(1) DEFAULT NULL,
      `REQUESTS_RECOVERY` varchar(1) DEFAULT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    
    -- --------------------------------------------------------
    
    --
    -- 表的结构 `qrtz_job_details`
    --
    
    CREATE TABLE IF NOT EXISTS `qrtz_job_details` (
      `SCHED_NAME` varchar(120) NOT NULL,
      `JOB_NAME` varchar(120) NOT NULL,
      `JOB_GROUP` varchar(120) NOT NULL,
      `DESCRIPTION` varchar(250) DEFAULT NULL,
      `JOB_CLASS_NAME` varchar(250) NOT NULL,
      `IS_DURABLE` varchar(1) NOT NULL,
      `IS_NONCONCURRENT` varchar(1) NOT NULL,
      `IS_UPDATE_DATA` varchar(1) NOT NULL,
      `REQUESTS_RECOVERY` varchar(1) NOT NULL,
      `JOB_DATA` blob
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    
    -- --------------------------------------------------------
    
    --
    -- 表的结构 `qrtz_locks`
    --
    
    CREATE TABLE IF NOT EXISTS `qrtz_locks` (
      `SCHED_NAME` varchar(120) NOT NULL,
      `LOCK_NAME` varchar(40) NOT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    
    -- --------------------------------------------------------
    
    --
    -- 表的结构 `qrtz_paused_trigger_grps`
    --
    
    CREATE TABLE IF NOT EXISTS `qrtz_paused_trigger_grps` (
      `SCHED_NAME` varchar(120) NOT NULL,
      `TRIGGER_GROUP` varchar(120) NOT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    
    -- --------------------------------------------------------
    
    --
    -- 表的结构 `qrtz_scheduler_state`
    --
    
    CREATE TABLE IF NOT EXISTS `qrtz_scheduler_state` (
      `SCHED_NAME` varchar(120) NOT NULL,
      `INSTANCE_NAME` varchar(120) NOT NULL,
      `LAST_CHECKIN_TIME` bigint(13) NOT NULL,
      `CHECKIN_INTERVAL` bigint(13) NOT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    
    -- --------------------------------------------------------
    
    --
    -- 表的结构 `qrtz_simple_triggers`
    --
    
    CREATE TABLE IF NOT EXISTS `qrtz_simple_triggers` (
      `SCHED_NAME` varchar(120) NOT NULL,
      `TRIGGER_NAME` varchar(120) NOT NULL,
      `TRIGGER_GROUP` varchar(120) NOT NULL,
      `REPEAT_COUNT` bigint(7) NOT NULL,
      `REPEAT_INTERVAL` bigint(12) NOT NULL,
      `TIMES_TRIGGERED` bigint(10) NOT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    
    -- --------------------------------------------------------
    
    --
    -- 表的结构 `qrtz_simprop_triggers`
    --
    
    CREATE TABLE IF NOT EXISTS `qrtz_simprop_triggers` (
      `SCHED_NAME` varchar(120) NOT NULL,
      `TRIGGER_NAME` varchar(120) NOT NULL,
      `TRIGGER_GROUP` varchar(120) NOT NULL,
      `STR_PROP_1` varchar(512) DEFAULT NULL,
      `STR_PROP_2` varchar(512) DEFAULT NULL,
      `STR_PROP_3` varchar(512) DEFAULT NULL,
      `INT_PROP_1` int(11) DEFAULT NULL,
      `INT_PROP_2` int(11) DEFAULT NULL,
      `LONG_PROP_1` bigint(20) DEFAULT NULL,
      `LONG_PROP_2` bigint(20) DEFAULT NULL,
      `DEC_PROP_1` decimal(13,4) DEFAULT NULL,
      `DEC_PROP_2` decimal(13,4) DEFAULT NULL,
      `BOOL_PROP_1` varchar(1) DEFAULT NULL,
      `BOOL_PROP_2` varchar(1) DEFAULT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    
    -- --------------------------------------------------------
    
    --
    -- 表的结构 `qrtz_triggers`
    --
    
    CREATE TABLE IF NOT EXISTS `qrtz_triggers` (
      `SCHED_NAME` varchar(120) NOT NULL,
      `TRIGGER_NAME` varchar(120) NOT NULL,
      `TRIGGER_GROUP` varchar(120) NOT NULL,
      `JOB_NAME` varchar(120) NOT NULL,
      `JOB_GROUP` varchar(120) NOT NULL,
      `DESCRIPTION` varchar(250) DEFAULT NULL,
      `NEXT_FIRE_TIME` bigint(13) DEFAULT NULL,
      `PREV_FIRE_TIME` bigint(13) DEFAULT NULL,
      `PRIORITY` int(11) DEFAULT NULL,
      `TRIGGER_STATE` varchar(16) NOT NULL,
      `TRIGGER_TYPE` varchar(8) NOT NULL,
      `START_TIME` bigint(13) NOT NULL,
      `END_TIME` bigint(13) DEFAULT NULL,
      `CALENDAR_NAME` varchar(200) DEFAULT NULL,
      `MISFIRE_INSTR` smallint(2) DEFAULT NULL,
      `JOB_DATA` blob
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    
    --
    -- Indexes for dumped tables
    --
    
    --
    -- Indexes for table `qrtz_blob_triggers`
    --
    ALTER TABLE `qrtz_blob_triggers`
      ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
      ADD KEY `SCHED_NAME` (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`);
    
    --
    -- Indexes for table `qrtz_calendars`
    --
    ALTER TABLE `qrtz_calendars`
      ADD PRIMARY KEY (`SCHED_NAME`,`CALENDAR_NAME`);
    
    --
    -- Indexes for table `qrtz_cron_triggers`
    --
    ALTER TABLE `qrtz_cron_triggers`
      ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`);
    
    --
    -- Indexes for table `qrtz_fired_triggers`
    --
    ALTER TABLE `qrtz_fired_triggers`
      ADD PRIMARY KEY (`SCHED_NAME`,`ENTRY_ID`),
      ADD KEY `IDX_QRTZ_FT_TRIG_INST_NAME` (`SCHED_NAME`,`INSTANCE_NAME`),
      ADD KEY `IDX_QRTZ_FT_INST_JOB_REQ_RCVRY` (`SCHED_NAME`,`INSTANCE_NAME`,`REQUESTS_RECOVERY`),
      ADD KEY `IDX_QRTZ_FT_J_G` (`SCHED_NAME`,`JOB_NAME`,`JOB_GROUP`),
      ADD KEY `IDX_QRTZ_FT_JG` (`SCHED_NAME`,`JOB_GROUP`),
      ADD KEY `IDX_QRTZ_FT_T_G` (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
      ADD KEY `IDX_QRTZ_FT_TG` (`SCHED_NAME`,`TRIGGER_GROUP`);
    
    --
    -- Indexes for table `qrtz_job_details`
    --
    ALTER TABLE `qrtz_job_details`
      ADD PRIMARY KEY (`SCHED_NAME`,`JOB_NAME`,`JOB_GROUP`),
      ADD KEY `IDX_QRTZ_J_REQ_RECOVERY` (`SCHED_NAME`,`REQUESTS_RECOVERY`),
      ADD KEY `IDX_QRTZ_J_GRP` (`SCHED_NAME`,`JOB_GROUP`);
    
    --
    -- Indexes for table `qrtz_locks`
    --
    ALTER TABLE `qrtz_locks`
      ADD PRIMARY KEY (`SCHED_NAME`,`LOCK_NAME`);
    
    --
    -- Indexes for table `qrtz_paused_trigger_grps`
    --
    ALTER TABLE `qrtz_paused_trigger_grps`
      ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_GROUP`);
    
    --
    -- Indexes for table `qrtz_scheduler_state`
    --
    ALTER TABLE `qrtz_scheduler_state`
      ADD PRIMARY KEY (`SCHED_NAME`,`INSTANCE_NAME`);
    
    --
    -- Indexes for table `qrtz_simple_triggers`
    --
    ALTER TABLE `qrtz_simple_triggers`
      ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`);
    
    --
    -- Indexes for table `qrtz_simprop_triggers`
    --
    ALTER TABLE `qrtz_simprop_triggers`
      ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`);
    
    --
    -- Indexes for table `qrtz_triggers`
    --
    ALTER TABLE `qrtz_triggers`
      ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
      ADD KEY `IDX_QRTZ_T_J` (`SCHED_NAME`,`JOB_NAME`,`JOB_GROUP`),
      ADD KEY `IDX_QRTZ_T_JG` (`SCHED_NAME`,`JOB_GROUP`),
      ADD KEY `IDX_QRTZ_T_C` (`SCHED_NAME`,`CALENDAR_NAME`(191)),
      ADD KEY `IDX_QRTZ_T_G` (`SCHED_NAME`,`TRIGGER_GROUP`),
      ADD KEY `IDX_QRTZ_T_STATE` (`SCHED_NAME`,`TRIGGER_STATE`),
      ADD KEY `IDX_QRTZ_T_N_STATE` (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`,`TRIGGER_STATE`),
      ADD KEY `IDX_QRTZ_T_N_G_STATE` (`SCHED_NAME`,`TRIGGER_GROUP`,`TRIGGER_STATE`),
      ADD KEY `IDX_QRTZ_T_NEXT_FIRE_TIME` (`SCHED_NAME`,`NEXT_FIRE_TIME`),
      ADD KEY `IDX_QRTZ_T_NFT_ST` (`SCHED_NAME`,`TRIGGER_STATE`,`NEXT_FIRE_TIME`),
      ADD KEY `IDX_QRTZ_T_NFT_MISFIRE` (`SCHED_NAME`,`MISFIRE_INSTR`,`NEXT_FIRE_TIME`),
      ADD KEY `IDX_QRTZ_T_NFT_ST_MISFIRE` (`SCHED_NAME`,`MISFIRE_INSTR`,`NEXT_FIRE_TIME`,`TRIGGER_STATE`),
      ADD KEY `IDX_QRTZ_T_NFT_ST_MISFIRE_GRP` (`SCHED_NAME`,`MISFIRE_INSTR`,`NEXT_FIRE_TIME`,`TRIGGER_GROUP`,`TRIGGER_STATE`);
    
    --
    -- 限制导出的表
    --
    
    --
    -- 限制表 `qrtz_blob_triggers`
    --
    ALTER TABLE `qrtz_blob_triggers`
      ADD CONSTRAINT `qrtz_blob_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `qrtz_triggers` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`);
    
    --
    -- 限制表 `qrtz_cron_triggers`
    --
    ALTER TABLE `qrtz_cron_triggers`
      ADD CONSTRAINT `qrtz_cron_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `qrtz_triggers` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`);
    
    --
    -- 限制表 `qrtz_simple_triggers`
    --
    ALTER TABLE `qrtz_simple_triggers`
      ADD CONSTRAINT `qrtz_simple_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `qrtz_triggers` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`);
    
    --
    -- 限制表 `qrtz_simprop_triggers`
    --
    ALTER TABLE `qrtz_simprop_triggers`
      ADD CONSTRAINT `qrtz_simprop_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `qrtz_triggers` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`);
    
    --
    -- 限制表 `qrtz_triggers`
    --
    ALTER TABLE `qrtz_triggers`
      ADD CONSTRAINT `qrtz_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `JOB_NAME`, `JOB_GROUP`) REFERENCES `qrtz_job_details` (`SCHED_NAME`, `JOB_NAME`, `JOB_GROUP`);


    quartz集群实现原理,利用数据库记录job行为,并通过锁机制,使job在同一次中仅运行一次。

    JobBean示例

    //需要交由spring管理
    @Service("dialogJob") public class DialogJob { @Autowired private QuestionService questionService;
    // 方法名在quartz定义
    public void execute() throws Exception{ //具体执行业务
        questionService.XXXXX(); } }
  • 相关阅读:
    Linux C编程 GCC的使用
    51nod 1079 中国剩余定理
    51nod 1074 约瑟夫环 V2
    51nod 1073 约瑟夫环
    51nod 1072 威佐夫游戏
    ACM博弈论总结
    51nod 1069 Nim游戏
    2017 ACM-ICPC 亚洲区(南宁赛区)网络赛 The Heaviest Non-decreasing Subsequence Problem
    2017 ACM-ICPC 亚洲区(南宁赛区)网络赛 Overlapping Rectangles
    2017 ACM-ICPC 亚洲区(南宁赛区)网络赛 Minimum Distance in a Star Graph
  • 原文地址:https://www.cnblogs.com/vincent0928/p/6294792.html
Copyright © 2011-2022 走看看