81,094
社区成员
发帖
与我相关
我的任务
分享
public class UpImgServlet extends HttpServlet ...{
public void destroy() ...{
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException ...{
response.setContentType("text/html");
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
// org.apache.commons.fileupload.DiskFileUpload 是一个开源包里的。
DiskFileUpload du = new DiskFileUpload();
du.setSizeMax(4194304); // 设置最大文件尺寸,这里是4MB
du.setSizeThreshold(4096);// 设置缓存区大小 ,4 kb;
// up 为 /WebRoot 下的 一个目录
du.setRepositoryPath(request.getSession().getServletContext()
.getRealPath("/up"));// 设置缓存目录
// 得到所有文件
try ...{
List list = du.parseRequest(request);
Iterator it = list.iterator();
while (it.hasNext()) ...{
org.apache.commons.fileupload.FileItem fileItem = (FileItem) it
.next();
// 是否为表单元素。如文本框 等等。
if (fileItem.isFormField()) ...{
String name = fileItem.getFieldName();
//通过流 用来读取表单元素里的内容。
java.io.BufferedReader br = new BufferedReader(
new InputStreamReader(fileItem.getInputStream()));
//如果还有除文件域以外的其他表单元素 就用 if()进行名字一一匹配。
if(name.equals("description"))...{
String contents = br.readLine();
System.out.println(contents);
}
}
// 文件域
else ...{
// 获得文件名,这个文件名包括路径:
String fileName = fileItem.getName();
int index = fileName.lastIndexOf('.');
fileName = fileName.substring(index);
fileName = this.getFileName() + fileName; //文件保存位置
fileItem.write(new File(request.getSession().getServletContext().getRealPath("/img")+ "\" + fileName));
System.out.println("上传成功");
}
}
} catch (FileUploadException e) ...{
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) ...{
// TODO Auto-generated catch block
e.printStackTrace();
}
PrintWriter out = response.getWriter();
out.flush();
out.close();
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException ...{
this.doGet(request, response);
}
public void init() throws ServletException ...{
// Put your code here
}
// 以日期 获得一个文件名。(不重复);
String getFileName() ...{
java.util.Calendar cal = Calendar.getInstance();
int year = cal.get(Calendar.YEAR);
int mon = cal.get(Calendar.MONTH);
int day = cal.get(Calendar.DATE);
int hour = cal.get(Calendar.HOUR);
int min = cal.get(Calendar.MINUTE);
int sec = cal.get(Calendar.SECOND);
int mi = cal.get(Calendar.MILLISECOND);
System.out.println("mon" + mon);
System.out.println("day" + day);
return "" + year + mon + day + hour + min + sec + mi;
}
}