Apache 公共资源 ->文件上传-> DiskFileUpload无法解析

Question

<%@ page import="org.apache.commons.fileupload.*" %> //一些代码.... DiskFileUpload fu = new DiskFileUpload();

我正在尝试使用apache commons函数DiskFileUpload，但由于找不到fileupload.jar而出现异常。我查看了与此论坛中类似问题相关的其他回复，人们建议将该文件添加到 WEB-INF/lib 中，我尝试了它，但它对我不起作用。

也许我把它放在错误的位置？ 我的jsp路径是：apache-tomcat-6.0.29/webapps/ROOT/ClockAdmin/upload.jsp WEB-INF 是：apache-tomcat-6.0.29/webapps/WEB-INF/commons-fileupload-1.2.2.jar 库/ 我查看了其他帖子，但仍然不起作用： Apache 公共资源 ->文件上传-> parseRequest() 错误

我得到了以下异常：

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

An error occurred at line: 36 in the jsp file: /ClockAdmin/uploader2.jsp
DiskFileUpload cannot be resolved to a type
33:             System.out.println( "CONTENT-LENGHT" +  request.getContentLength());
34:             System.out.println("session id = " + session.getId());
35: 
36:             DiskFileUpload fu = new DiskFileUpload();
37:             // maximum size before a FileUploadException will be thrown
38:             fu.setSizeMax(5000000);
39:             // maximum size that will be stored in memory


An error occurred at line: 36 in the jsp file: /ClockAdmin/uploader2.jsp
DiskFileUpload cannot be resolved to a type
33:             System.out.println( "CONTENT-LENGHT" +  request.getContentLength());
34:             System.out.println("session id = " + session.getId());
35: 
36:             DiskFileUpload fu = new DiskFileUpload();
37:             // maximum size before a FileUploadException will be thrown
38:             fu.setSizeMax(5000000);
39:             // maximum size that will be stored in memory


An error occurred at line: 48 in the jsp file: /ClockAdmin/uploader2.jsp
FileItem cannot be resolved to a type
45:             Iterator item = fileItems.iterator();
46:             while(item.hasNext())
47:             {
48:                 FileItem fi = (FileItem) item.next();
49:                 if(fi.isFormField())
50:                 {
51:                     continue;


An error occurred at line: 48 in the jsp file: /ClockAdmin/uploader2.jsp
FileItem cannot be resolved to a type
45:             Iterator item = fileItems.iterator();
46:             while(item.hasNext())
47:             {
48:                 FileItem fi = (FileItem) item.next();
49:                 if(fi.isFormField())
50:                 {
51:                     continue;


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:439)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:349)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)
    org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

Answer 1

您需要将 JAR 放入 /WEB-INF/lib 文件夹中，而不是 /WEB-INF 中。

Answer 2

我必须通过退回 Tomcat 服务器来手动部署 WAR 文件。这解压了 WAR，并且当服务器重新启动时，它没有抛出任何异常。我只能想象 Tomcat 设置中的配置错误，无法正确关闭并重新打开清单。