spring-boot-starter-amqp依赖导致StackOverflowError

Question

我有一个基本的Spring Boot项目，在这个项目中，我试图用RabbitMQ实现简单的消息传递。当我将spring-boot-starter-amqp依赖项添加到我的pom.xml文件并启动Spring Boot应用程序时，我会得到java.lang.reflect.invocationTargetException导致的java.lang.StackOverflowError异常：

Exception in thread "main" java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
    at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:58)
Caused by: java.lang.StackOverflowError
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:280)
    at org.apache.log4j.Category.<init>(Category.java:57)
    at org.apache.log4j.Logger.<init>(Logger.java:37)
    at org.apache.log4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:43)
    at org.apache.log4j.LogManager.getLogger(LogManager.java:45)
    at org.slf4j.impl.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:63)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:281)
    at org.apache.log4j.Category.<init>(Category.java:57)
    at org.apache.log4j.Logger.<init>(Logger.java:37)
    at org.apache.log4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:43)
    at org.apache.log4j.LogManager.getLogger(LogManager.java:45)
    at org.slf4j.impl.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:63)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:281)
    at org.apache.log4j.Category.<init>(Category.java:57)
    at org.apache.log4j.Logger.<init>(Logger.java:37)

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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>rabbitmq.client</groupId>
    <artifactId>rabbitmqFstClient</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>rabbitmqFstClient</name>
    <description>Spring-Boot rabbitmq client</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

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

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

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

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jms</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-jms</artifactId>
        </dependency>

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

        <!-- https://mvnrepository.com/artifact/org.apache.activemq/activemq-all -->
        <dependency>
            <groupId>org.apache.activemq</groupId>
            <artifactId>activemq-all</artifactId>
            <version>5.14.2</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

如果我从pom.xml中移除spring-boot-starter-amqp依赖项，项目将不会出错：

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

Answer 1

我不确定它是否能解决您的问题，但无论如何，您都有一个潜在的冲突，因为根据日志，您拉出了log4J依赖项。
如果这样做，您必须排除在声明以下内容时默认提供的logback：

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

您可以通过显示项目的依赖项树并查看org.springframework.boot:spring-boot-starter-web:jar依赖项的作用来检查它：

[INFO] +- org.springframework.boot:spring-boot-starter-web:jar:1.4.0.RELEASE:compile
[INFO] | +- org.springframework.boot:spring-boot-starter:jar:1.4.0.RELEASE:compile
[INFO] | | +- org.springframework.boot:spring-boot-starter-logging:jar:1.4.0.RELEASE:compile
[INFO] | | | +- ch.qos.logback:logback-classic:jar:1.1.7:compile
[INFO] | | | | +- ch.qos.logback:logback-core:jar:1.1.7:compile
[INFO] | | | | \- org.slf4j:slf4j-api:jar:1.7.21:compile
[INFO] | | | +- org.slf4j:jcl-over-slf4j:jar:1.7.21:compile
[INFO] | | | +- org.slf4j:jul-to-slf4j:jar:1.7.21:compile
[INFO] | | | \- org.slf4j:log4j-over-slf4j:jar:1.7.21:compile
[INFO] | | \- org.yaml:snakeyaml:jar:1.17:runtime

Spring Boot声明，如果Log4J2在类路径上，它支持Log4J2进行日志记录配置。如果您使用starters来组装依赖项，这意味着您必须排除Logback，然后包含html" target="_blank">log4j2。

因此，若要仅使用log4j，可以从spring-boot-starter-web依赖项中排除Logback：

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

或者只使用logback，您应该排除可能由其他声明的依赖项提取的log4j。
使用Maven项目中的:MVN dependency:tree来了解罪魁祸首。

但在任何情况下，你都不应该同时使用。