是用SmartUpload进行文件上传

[code]package com.jamesby.file.servlet;

public class UpLoadServlet extends HttpServlet {
private static Log log = LogFactory.getLog(UpLoadServlet.class);

private ServletConfig config;

final public void init(ServletConfig config) throws ServletException {
this.config = config;
}

final public ServletConfig getServletConfig() {
return config;
}

public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
doPost(request, response);
}


public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
try {
SmartUpload su = new SmartUpload();

su.initialize(config, request, response);

su.setMaxFileSize(1024 * 1024 * 4); //4M

su.upload();

String paramValue = su.getRequest().getParameter("paramName");

String path = "d:/upload";
for (int i = 0; i < su.getFiles().getCount(); i++) {

com.jspsmart.upload.File file = su.getFiles().getFile(i);

String fileName = file.getFileName();

if (!file.isMissing()) file.saveAs(path + "/"+fileName,SmartUpload.SAVE_PHYSICAL);
else continue;
}
return null;
} catch (Exception ex) {

}
}
}[/code]