atusQuery(HttpServletRequest request,
HttpServletResponse response) throws
IOException {
response.setContentType("text/xml");
response.setHeader("Cache-Control", "no-cache");
FileUploadStatus satusBean = getStatusBean(request);
response.setCharacterEncoding("gbk");
response.getWriter().write(satusBean.toJSon());
}
/**
* 处理取消文件上传
*/
private void processCancelFileUpload(HttpServletRequest request,
HttpServletResponse response) throws
IOException {
FileUploadStatus satusBean = getStatusBean(request);
satusBean.setCancel(true);
saveStatusBean(request, satusBean);
responseStatusQuery(request, response);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (isMultipart) {
processFileUpload(request, response);
} else {
request.setCharacterEncoding("gbk");
if (request.getParameter("uploadStatus") != null) {
responseStatusQuery(request, response);
}
if (request.getParameter("cancelUpload") != null) {
processCancelFileUpload(request, response);
}
}
}
}
BeanControler.java：
[java]
package liuzuochen.sample.upload;
/**
*
*
Description: 主要作用是对FileUploadStatus进行管理，为客户端提供相应的
* FileUploadStatus类对象。这是一个单例类。
*
*/
import java.util.Vector;
public class BeanControler {
private static BeanControler beanControler = new BeanControler();
private Vector vector = new Vector();
private BeanControler() {
}
public static BeanControler getInstance() {
return beanControler;
}
/**
* 取得相应FileUploadStatus类对象的存储位置
*/
private int indexOf(String strID) {
int nReturn = -1;
for (int i = 0; i < vector.size(); i++) {
FileUploadStatus status = (FileUploadStatus) vector.elementAt(i);
if (status.getUploadAddr().equals(strID)) {
nReturn = i;
break;
}
}
return nReturn;
}
/**
* 取得相应FileUploadStatus类对象
*/
public FileUploadStatus getUploadStatus(String strID) {
return (FileUploadStatus) vector.elementAt(indexOf(strID));
}
/**
* 存储FileUploadStatus类对象
*/
public void setUploadStatus(FileUploadStatus status) {
int nIndex = indexOf(status.getUploadAddr());
if ( -1 == nIndex) {
vector.add(status);
} else {
vector.insertElementAt(status, nIndex);
vector.removeElementAt(nIndex + 1);
}
}
/**
* 删除FileUploadStatus类对象
*/
public void removeUploadStatus(String strID){
int nIndex = indexOf(strID);
if(-1!=nIndex)
vector.removeElementAt(nIndex);
}
}
EventListenerImpl.java：
[java]
package liuzuochen.sample.u