。。。菜鸟问题。。。
页面代码： <% SmartUpload mysmartload =new SmartUpload(); long file_size_max=10*1024*1024; String filename=""; // 文件名 String ext=""; //后缀名 String testVal =""; // String url="Images/"; // 保存文件目录 mysmartload.initialize(pageContext); // 初始化 try { mysmartload.setAllowedFilesList("jpg,gif,png,jpeg,bmp"); // 允许上传的文件类型 mysmartload.upload(); } catch(Exception e) { %> <script language="javascript"> alert("只允许上传.jpg和.gif类型图片文件"); </script> <% } try { com.jspsmart.upload.File myfile = mysmartload.getFiles().getFile(0); if(myfile.isMissing()) { %> <script language="javascript">alert("请先选择要上传的文件");</script> <% } else { String myfilename=myfile.getFileName(); // 获取上传文件的文件名 ext=myfile.getFileExt(); // 获取上传文件的后缀名 int file_size=myfile.getSize(); // 获取上传文件的大小String savaurl=""; if(file_size<file_size_max) { savaurl = application.getRealPath("upload/")+url; savaurl+= filename+"."+ext; // 文件全名 // 保存路myfile.saveAs(savaurl,SmartUpload.SAVE_PHYSICAL); // 输出 Out.print() } }catch (Exception ex)｛ System.out.print(ex.toString()); } %> 错误异常： org.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: 15 in the generated java fileOnly a type can be imported. com.jspsmart.upload.File resolves to a packageAn error occurred at line: 14 in the jsp file: /WebRoot/Uploadfile.jspSmartUpload cannot be resolved to a type11: 12: <% 13: 14: SmartUpload mysmartload =new SmartUpload(); 15: 16: long file_size_max=10*1024*1024; 17: An error occurred at line: 14 in the jsp file: /WebRoot/Uploadfile.jspSmartUpload cannot be resolved to a type11: 12: <% 13: 14: SmartUpload mysmartload =new SmartUpload(); 15: 16: long file_size_max=10*1024*1024; 17: An error occurred at line: 48 in the jsp file: /WebRoot/Uploadfile.jspcom.jspsmart.upload.File cannot be resolved to a type45: } 46: try 47: { 48: com.jspsmart.upload.File myfile = mysmartload.getFiles().getFile(0); 49: if(myfile.isMissing()) 50: { 51: %> An error occurred at line: 78 in the jsp file: /WebRoot/Uploadfile.jspSmartUpload.SAVE_PHYSICAL cannot be resolved to a type75: 76: // 保存路径77: 78: myfile.saveAs(savaurl,SmartUpload.SAVE_PHYSICAL); 79: 80: 81: // 输出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:317) org.apache.jasper.compiler.Compiler.compile(Compiler.java:295) org.apache.jasper.compiler.Compiler.compile(Compiler.java:282) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:586) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
哪位大神帮看一看...
------解决方案--------------------
SmartUpload ,
com.jspsmart.upload.File
这两个类都认不到，你在jsp最上面没引入啊？
------解决方案--------------------
error occurred at line: 14 in the jsp file: /WebRoot/Uploadfile.jsp
SmartUpload cannot be resolved to a type
和
SmartUpload.SAVE_PHYSICAL cannot be resolved to a type
SmartUpload.SAVE_PHYSICAL 不能识别，没有引入这个类的包。
------解决方案--------------------
仔细检查下引入包的问题
------解决方案--------------------
1，检查是否将classpath设置错误：正确的为.;%java_home%/lib/rt.jar;%java_home%/lib/tools.jar <!--java_home is your jdk directory-->
2，This can usually be solved by copying manually $JAVA_HOME/lib/tools.jar from the JDK
to the common/lib directory of the Tomcat server, followed by a Tomcat restart.
看到了吗？
把jdk安装目录下的lib/tools.jar拷贝到tomcat安装目录下的common/lib目录下，然后重启tomcat，试试 。
3,设置tomcat的字符集为GBK，预防乱码的产生：F:/Tomcat 5.0/conf目录下的server.xml中增加一个参数URIEncoding="GBK",或者统一"utf-8"编码
for example: <Connector URIEncoding="GBK"
port="8080" maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
debug="0" connectionTimeout="20000"
disableUploadTimeout="true" />
4,增大tomcat的jvm内存使用参数：在F:/Tomcat 5.0/bin目录下的catalina.bat文件中增加set JAVA_OPTS=-Xms256m -Xmx512m
总之,以上是引起 org.apache.jasper.JasperException: Unable to compile class for JSP 顶层异常最常见的原因,其他底层异常也会造成此异常,是具体情况而定;
------解决方案--------------------
enctype= "multipart/form-data "