idea spring boot java maven 依赖重复报错解决

迷南。 2023-01-01 03:59 164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： ###

![20201231142557306.png][]

**1、打开项目依赖关系图**

![20201231141410768.png][]

![20201231142601840.png][]

**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)

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW4xMDc4NzY_size_16_color_FFFFFF_t_70][]

![20201231142604350.png][]

**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

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW4xMDc4NzY_size_16_color_FFFFFF_t_70 1][]

![2020123114260694.png][]

**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>

![2020123114261528.png][]

**5、重新编译启动即可**

[20201231142557306.png]: /images/20221120/50e961b5b0f84126bf46353c33ea70f8.png
[20201231141410768.png]: /images/20221120/055951d3983a436a97dd228d7085b806.png
[20201231142601840.png]: https://img-blog.csdnimg.cn/20201231142601840.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW4xMDc4NzY_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20201231141434451.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW4xMDc4NzY=,size_16,color_FFFFFF,t_70
[20201231142604350.png]: https://img-blog.csdnimg.cn/20201231142604350.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW4xMDc4NzY_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20201231141741489.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW4xMDc4NzY=,size_16,color_FFFFFF,t_70
[2020123114260694.png]: https://img-blog.csdnimg.cn/2020123114260694.png
[2020123114261528.png]: https://img-blog.csdnimg.cn/2020123114261528.png