java.lang.NoClassDefFoundError：从 Spring 4 迁移到 Spring 6 期间抛出 javax/servlet/Filter

Question

  java.lang.NoClassDefFoundError: javax/servlet/Filter

我添加了 Jakarta servlet 依赖项。我还在我的 web.xml 中添加了 CORS 过滤器

以下是CORS过滤器的web.xml声明

<filter>
    <filter-name>CorsFilter</filter-name>
    <filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>
    <init-param>
        <param-name>cors.allowed.origins</param-name>
        <param-value>*</param-value>
    </init-param>
    <init-param>
        <param-name>cors.exposed.headers</param-name>
        <param-value>Access-Control-Allow-Origin,Access-Control-Allow-Credentials</param-value>
    </init-param>
    <init-param>
        <param-name>cors.allowed.methods</param-name>
        <param-value>GET,POST,HEAD,OPTIONS,PUT</param-value>
    </init-param>
    <init-param>
        <param-name>cors.allowed.headers</param-name>
        <param-value>Content-Type,X-Requested-With,accept,Origin,Access-Control-Request-Method,Access-Control-Request-Headers</param-value>
    </init-param>
</filter>

<filter>
    <filter-name>CORS</filter-name>
    <filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>CORS</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
    <filter-name>CorsFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

Answer 1

如果您使用的

com.thetransactioncompany:cors-filter

版本低于

3.0

，则

com.thetransactioncompany.cors.CORSFilter

正在实现

javax.servlet.Filter

，这与升级到需要

jakarta-based

组件的 Spring6 不兼容。

您应该将依赖升级到3.0来解决该问题；下面是 pom.xml 摘录的示例：

<dependency>
    <groupId>com.thetransactioncompany</groupId>
    <artifactId>cors-filter</artifactId>
    <version>3.0</version>
</dependency>