Spring boot Spring Boot AMQP-启动时连接创建/队列声明
弹簧靴2.3.1 弹簧启动机amqp 如果我通过运行main方法(Intellij-创建类型为application的运行配置并提供主类DemoApplication)将spring引导应用程序作为java应用程序运行,则启动时不会创建RabbitMQ连接。但是,当我作为Spring Boot应用程序运行时(Intellij-创建Spring Boot类型的运行配置并提供主类DemoApplication),RabbitMQ连接是在启动期间创建的 这两者的区别是什么?当主方法作为java应用程序运行时,为什么RabbitMQ不能在启动时创建连接?这一行没有出现Spring boot Spring Boot AMQP-启动时连接创建/队列声明,spring-boot,spring-amqp,spring-rabbit,Spring Boot,Spring Amqp,Spring Rabbit,弹簧靴2.3.1 弹簧启动机amqp 如果我通过运行main方法(Intellij-创建类型为application的运行配置并提供主类DemoApplication)将spring引导应用程序作为java应用程序运行,则启动时不会创建RabbitMQ连接。但是,当我作为Spring Boot应用程序运行时(Intellij-创建Spring Boot类型的运行配置并提供主类DemoApplication),RabbitMQ连接是在启动期间创建的 这两者的区别是什么?当主方法作为java应用程序
INFO 32385 --- [*.*.*.*] o.s.a.r.c.CachingConnectionFactory : Created new connection: rabbitConnectionFactory.publisher#3f499c2f:0/SimpleConnection@4e5ef6a0 [delegate=amqp://guest@127.0.0.1:5672/, localPort= 62061]
pom.xml
<?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>2.3.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>14</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</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-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.amqp</groupId>
<artifactId>spring-rabbit-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
主类
package com.example.demo;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.DirectExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
@Bean
DirectExchange demoExchange() {
return new DirectExchange("demo-exchange");
}
@Bean
Queue demoQueue() {
return new Queue("demo-queue");
}
@Bean
Binding demoBinding() {
return BindingBuilder.bind(demoQueue()).to(demoExchange()).with("demo-routing");
}
}
Intellij-创建应用程序类型的运行配置,并提供主类(DemoApplication)您的代码中没有打开连接的内容(例如
@RabbitListener
)
也许执行器(RabbitHealthIndicator
)正在打开一个连接-不确定为什么它会对您如何启动它产生影响
我看不到任何一种连接(使用STS)在运行
如果您将
@RabbitListener
添加到应用程序中;您将看到任何一种连接。我看不出有任何区别;我总是得到一个连接,不管我如何启动它;显示您的代码。示例代码addedAlso mvn spring boot:run不会在启动时创建连接。我看到Spring引导运行配置有EnableJMX复选框,如果未选中此复选框,则即使Spring引导运行在启动期间也不会创建连接。我尝试将这些JMX选项添加到应用程序运行类型(main)中,但没有成功:-Dcom.sun.management.jmxremote-Dspring.JMX.enabled=true-Dspring.liveBeansView.mbeanDomain-Dspring.Application.admin.enabled=true看起来执行器正在打开它,因为如果我删除依赖关系,启动时不会打开连接。现在,我在想为什么在主java风格的运行期间没有触发执行器,可能是我遗漏了什么。只是因为看到了不同的行为而得到了古玩,据我所知没有什么问题;只有使用HTTP访问执行器端点,运行状况检查才会运行。就我而言,我与执行机构没有任何联系。非常感谢您的评论,
package com.example.demo;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.DirectExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
@Bean
DirectExchange demoExchange() {
return new DirectExchange("demo-exchange");
}
@Bean
Queue demoQueue() {
return new Queue("demo-queue");
}
@Bean
Binding demoBinding() {
return BindingBuilder.bind(demoQueue()).to(demoExchange()).with("demo-routing");
}
}