重新加载项目后,新生成了重复的包

org.apache.jasper.JasperException: Unable to compile class for JSP: 

 

An error occurred at line: 23 in the generated Java file

The method getJspApplicationContext(ServletContext) is undefined for the type JspFactory

 

Stacktrace:

        org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.Java:92)

        org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)

        org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423)

        org.apache.jasper.compiler.Compiler.compile(Compiler.java:308)

        org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)

        org.apache.jasper.compiler.Compiler.compile(Compiler.java:273)

        org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)

        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)

        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)

        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)

        javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

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