java.lang.LinkageError: loader constraint violation

最新推荐文章于 2024-08-29 19:30:19 发布

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最新推荐文章于 2024-08-29 19:30:19 发布 · 1.8k 阅读

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#java.lang.LinkageError: loader cons

本文介绍了在Maven项目中遇到`java.lang.LinkageError: loader constraint violation`错误的原因，该错误通常发生在引入`servlet.api`和`jsp.api`依赖时，由于Eclipse和Tomcat内置的API冲突导致。解决方法是在pom.xml中将这两个依赖的scope设置为`provided`，以避免编译时和运行时的jar包冲突。

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Maven项目在加入servlet.api和jsp.api后报如下的错误

严重: Servlet.service() for servlet jsp threw exception
java.lang.LinkageError: loader constraint violation: loader (instance of org/apache/jasper/servlet/JasperLoader) previously initiated loading for a different type with name “javax/servlet/http/HttpServletRequest”
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.getDeclaredMethods(Unknown Source)
at org.apache.catalina.util.DefaultAnnotationProcessor.processAnnotations(DefaultAnnotationProcessor.java:226)
at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:148)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:329)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.