idea spring boot java maven 依赖重复报错解决-蒲公英云

idea spring boot java maven 依赖重复报错解决

迷南。 2023-01-01 03:59 201阅读 0赞

依赖重复报错

Description:

An attempt was made to call a method that does not exist. The attempt was made from the following location:
org.apache.catalina.authenticator.AuthenticatorBase.startInternal(AuthenticatorBase.java:1220)
The following method did not exist:
javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;
The method’s class, javax.servlet.ServletContext, is available from the following locations:
jar:file:/C:/Users/TANXZ/.m2/repository/javax/servlet/servlet-api/2.3/servlet-api-2.3.jar!/javax/servlet/ServletContext.class  
jar:file:/C:/Users/TANXZ/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.29/tomcat-embed-core-9.0.29.jar!/javax/servlet/ServletContext.class
It was loaded from the following location:
file:/C:/Users/TANXZ/.m2/repository/javax/servlet/servlet-api/2.3/servlet-api-2.3.jar
Action:

Correct the classpath of your application so that it contains a single, compatible version of javax.servlet.ServletContext

分析：

一般报错信息如上，编译不报错，是在运行的时候报错。

从上面看是由于多个依赖同时包含 ServletContext.class 所致。

包含该类的jar文件分别是 servlet-api-2.3.jar 和 tomcat-embed-core-9.0.29.jar

我们需要这里要排除 servlet-api-2.3.jar

有了这些信息就够了，下面看看如何解决。

解决：

1、打开项目依赖关系图

2、查找依赖

ctrl+F 然后键盘输入查找依赖名称(这里查servlet-api-2.3.jar)

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3、追溯项目依赖

查找是哪些依赖引入了servlet-api-2.3.jar，通过点击箭头，往上追溯，一直到我们自己的依赖

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4、排除依赖

例如我这里往上找，发现是my-mq项目，所以就在依赖这个项目下面把servlet-api-2.3排除掉

<dependency>
    <groupId>${project-groupId}</groupId>
    <artifactId>my-mq</artifactId>
    <version>${project-version}</version>
    <exclusions>
        <exclusion>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            </exclusion>
        </exclusions>
</dependency>