Spring 石英线程池数未更改

Question

我有 spring 引导应用程序，我正在使用 quartz 来管理作业。我在 application.properties 文件中配置了 quartz 但线程号没有改变（你可以在日志中看到它仍然是 10）。在 pom 中，我在这里删除了一些非上下文相关性。

pom:

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>test</groupId>
    <artifactId>test</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>test</name>
    <description>Spring Boot app</description>
    <properties>
        <java.version>11</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-quartz</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>5.3.9</version>
        </dependency>   
    </dependencies>
</project>

application.properties:

spring.quartz.job-store-type=jdbc
spring.quartz.jdbc.initialize-schema=never
spring.quartz.overwrite-existing-jobs=true
spring.quartz.properties.org.quartz.threadPool.class=org.quartz.simpl.SimpleThreadPool
spring.quartz.properties.org.quartz.threadPool.threadCount=20

日志：

2021-12-29 15:02:17.611  INFO 25563 --- [           main] org.quartz.core.QuartzScheduler          : Scheduler meta-data: Quartz Scheduler (v2.3.2) 'schedulerFactoryBean' with instanceId 'NON_CLUSTERED'
  Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally.
  NOT STARTED.
  Currently in standby mode.
  Number of jobs executed: 0
  Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 10 threads.
  Using job-store 'org.springframework.scheduling.quartz.LocalDataSourceJobStore' - which supports persistence. and is not clustered.

Answer 1

我在 spring-boot 2.6.0 上测试了您的配置，它工作正常，如下所示。默认情况下线程池大小是 10 如果你使用 spring-boot-starter-quartz 没有任何额外的配置并且看起来配置没有被选择所以请检查你的属性文件名是否正确（在问题中您已将其命名为 application.properies )

application.properties

spring.quartz.job-store-type=jdbc
spring.quartz.jdbc.initialize-schema=never
spring.quartz.overwrite-existing-jobs=true
spring.quartz.properties.org.quartz.threadPool.class=org.quartz.simpl.SimpleThreadPool
spring.quartz.properties.org.quartz.threadPool.threadCount=20

这是日志输出

2021-12-29 20:23:10.231  INFO 36936 --- [           main] org.quartz.core.QuartzScheduler          : Scheduler meta-data: Quartz Scheduler (v2.3.2) 'quartzScheduler' with instanceId 'NON_CLUSTERED'
  Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally.
  NOT STARTED.
  Currently in standby mode.
  Number of jobs executed: 0
  Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 20 threads.
  Using job-store 'org.springframework.scheduling.quartz.LocalDataSourceJobStore' - which supports persistence. and is not clustered.

更新

实际配置工作发生在 QuartzAutoConfiguration class 中，其中注入了 Spring 读取的属性。您可以通过在调试器中放置断点（我使用的是 Eclipse）来验证正在为石英读取和注入哪些属性。可以看出 - 有 2 个属性，其中一个与线程数相关，已读取为 20，可用于注入到 Quartz 配置中。

Spring 石英线程池数未更改

Spring quartz thread pool count is not changed

threadpool

spring-boot

quartz