从数据源获取数据库连接失败

Question

我正在 Spring Boot 中创建内存石英调度程序，但出现连接错误。 我有一个连接的数据库“oracle”。一旦我运行，我就会收到以下错误。谁能帮忙

ERROR [http-nio-80-exec-1] org.apache.juli.logging.DirectJDKLog: Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.quartz.JobPersistenceException: Failed to obtain DB connection from data source 'myDS': java.sql.SQLException: Connections could not be acquired from the underlying database!

这是我的quartz.properties 文件

#============================================================================
# Configure Main Scheduler Properties
#============================================================================
org.quartz.scheduler.instanceId = AUTO
org.quartz.scheduler.makeSchedulerThreadDaemon = true

#============================================================================
# Configure ThreadPool
#============================================================================

org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.makeThreadsDaemons = true
#org.quartz.threadPool.threadCount= 20
#org.quartz.threadPool.threadPriority= 5

#============================================================================
# Configure JobStore
#============================================================================
org.quartz.jobStore.class=org.quartz.impl.jdbcjobstore.JobStoreTX
org.quartz.jobStore.driverDelegateClass=org.quartz.impl.jdbcjobstore.oracle.OracleDelegate
org.quartz.jobStore.useProperties=true
org.quartz.jobStore.misfireThreshold=25000
org.quartz.jobStore.tablePrefix=QRTZ_
org.quartz.jobStore.isClustered=false
org.quartz.jobStore.dataSource=myDS

#============================================================================
# Configure Datasources
#============================================================================

org.quartz.dataSource.myDS.driver = oracle.jdbc.pool.OracleDataSource
org.quartz.dataSource.myDS.URL = jdbc:oracle:thin:@x.x.x.x:1521:fdf
org.quartz.dataSource.myDS.user = username
org.quartz.dataSource.myDS.password = password
org.quartz.dataSource.myDS.maxConnections = 5
org.quartz.dataSource.myDS.validationQuery = select 1

这就是我在 Controller 类中创建调度程序的方式

@RequestMapping("/start")
  public String start() throws SchedulerException {
  Scheduler scheduler;
  SchedulerFactory schedulerFactory  = new StdSchedulerFactory(quartzProperties());
scheduler = schedulerFactory.getScheduler();
    JobDetail jobDetail =
                JobBuilder.newJob(Job1.class)
                    .usingJobData("job1", "description")
                    .storeDurably(true)
                    .requestRecovery(true)
                    .build();
            scheduler.scheduleJob(jobDetail, Trigger1.fire());
scheduler.start();
return "redirect:/";
}
  @Bean
  public Properties quartzProperties() throws IOException {
    PropertiesFactoryBean propertiesFactoryBean = new PropertiesFactoryBean();
    propertiesFactoryBean.setLocation(new ClassPathResource("/quartz.properties"));
    propertiesFactoryBean.afterPropertiesSet();
    return propertiesFactoryBean.getObject();
  }

和 Job1.class

@Slf4j
public class Job1 implements Job {

  @Override
  public void execute(JobExecutionContext jobContext) {
    JobDetail jobDetail = jobContext.getJobDetail();
    log.info(
        "\nname: {}, \nstart: {}, \nnext: {}",
        jobDetail.getJobDataMap().getString("job 1"),
        jobContext.getFireTime(),
        jobContext.getNextFireTime());
  }
}

这是 Trigger1 类

public class Trigger1 {

  public static Trigger trigger;

  public static Trigger fire() {
    trigger =
        TriggerBuilder.newTrigger()
            .withIdentity("trigger 1")
            .startAt(new Date())
            .withSchedule(CronScheduleBuilder.cronSchedule("/1 * * ? * * *"))
            .build();
    return trigger;
  }
}

此外，我在我的数据库 tables_oracle.sql 中运行这个 sql 脚本

Answer 1

我不得不添加 jdbc maven 依赖。

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>

创建 SchedulerFactoryBean 并为其设置 dataSource 解决了这个问题