1、 ⾸先下载cos.jar包 然后加到Eclipse web⼯程的lib下
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<form action="FileUpload" method="post" enctype="multipart/form-data"> <table border="0">
<tr> <td valign="top">
<strong>Please choose your document:</strong>
<br>
</td>
<td>
<input type="file" name="file1">擀筋棒
<br>
</td>
</tr>
<tr>
<td>
<input type="submit" value="Upload File">
</td>
</tr> </table>
</form>
3、创建⼀个servlet 如下：
public class FileUpload extends HttpServlet {
private String webTempPath;
public void init() {
webTempPath = getServletContext().getRealPath("/") + "upload";
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
账户管理response.setContentType("text/plain");
request.setCharacterEncoding("GBK");
response.setCharacterEncoding("GBK");
// file limit size of 5 MB
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MultipartRequest mpr = new MultipartRequest(request, webTempPath, 120*1024*1024,"gb2312", new DefaultFileRenamePolicy());
// System.out.println("The file length is::"+File(webTempPath).length());
Enumeration params = FileNames();
// Parameter("name");
response.setContentType("text/html");
PrintWriter out = Writer();
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet upload</title>");
out.println("</head>");
out.println("<body>");
for (int i = 1; params.hasMoreElements(); i++){
String src=new FilesystemName((Element()));
// System.out.FilesystemName((Element()).length()); File file=new File(webTempPath+"/"+src);
System.out.println("The file length is::"+file.length());
System.out.println(src);
out.println("The name of uploaded file " + i + " is: "+ src+ "<br><br>");
}
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out.println("</body>");
out.println("</html>");
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
doPost( request, response);
}
}
4、在l⽂件下⾯加⼊servlet的映射
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>FileUpload</servlet-name>
<servlet-class>com.icss.servlet.FileUpload</servlet-class>
</servlet>
<servlet-name>FileUpload</servlet-name>
<url-pattern>/FileUpload</url-pattern>
</servlet-mapping>
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