?
<!--文件上传 servlet-->
public class UpFile extends HttpServlet{
?
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=utf-8");
response.setCharacterEncoding("utf-8");
DiskFileItemFactory factory = new DiskFileItemFactory();?
factory.setSizeThreshold(1024 * 1024 * 20);
//factory.setRepository(new File(request.getRealPath("/")));
ServletFileUpload upload = new ServletFileUpload(factory);
// 允许上传的文件类型?
//upload.setAllowedFilesList("doc,xls,");?
? // 拒绝上传的文件类型?
//upload.setDeniedFilesList("exe,bat,jsp");?
//文件大小20M
upload.setSizeMax(1024 * 1024 * 20);
?
List items;
String affix =null;
try {
items = upload.parseRequest(request);
for (Iterator it = items.iterator(); it.hasNext();) {
FileItem item = (FileItem) it.next();
if (item.isFormField()) {
String name = item.getFieldName();
?
if(name.equals("boy"))
{
affix = item.getString("utf-8");
}
} else {
if (item.getSize() > 0) {
String fieldName = item.getFieldName();
String fileName =item.getName();
String contentType = item.getContentType();
/*affix = System.currentTimeMillis()
+ fileName.substring(fileName.lastIndexOf("."),
fileName.length());*/
//affix = fileName.substring(fileName.lastIndexOf("."),fileName.length());
fileName = new String(fileName.getBytes("utf-8"),"utf-8");?
affix = fileName;
//设置上传路径
FileOutputStream fos = new FileOutputStream(request.getRealPath("Upload")+"/"+ affix);
if (item.isInMemory()) {
fos.write(item.get());
}
else {
InputStream is = item.getInputStream();
byte[] buffer = new byte[1024];
int len;
while ((len = is.read(buffer)) > 0) {
fos.write(buffer, 0, len);
}
is.close();
}
fos.flush();
fos.close();
}
}
}
} catch (FileUploadException e) {
e.printStackTrace();
}
?
}
}
<!--结束 -->
<!-- 文件下载servlet-->
?
public class DownFile extends HttpServlet {
private ServletConfig config; ?
protected void ?doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
java.io.BufferedInputStream bis = null;
java.io.BufferedOutputStream bos = null;
try {
String filename = request.getParameter("filename");
filename = new String(filename.getBytes("iso-8859-1"), "utf-8");
response.setContentType("application/x-msdownload");
response.setHeader("Content-disposition",
"attachment; filename="+ new String(filename.getBytes("iso-8859-1"),"utf-8"));
//设置下载路径
bis = new java.io.BufferedInputStream(
new java.io.FileInputStream(config.getServletContext().getRealPath("Upload/" + filename)));
bos = new java.io.BufferedOutputStream(response
.getOutputStream());
byte[] buff = new byte[2048];
int bytesRead;
while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
bos.write(buff, 0, bytesRead);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (bis != null)
bis.close();
if (bos != null)
bos.close();
}
}
public void init(ServletConfig config) throws ServletException {
this.config = config;
}
}
<-- 下载结束-->
<-- 对请求信息过滤-->
?
public class Filte implements Filter{
?
public void destroy() {
}
?
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest hRequest = (HttpServletRequest)request;
HttpServletResponse hResponse = (HttpServletResponse)response;
hRequest.setCharacterEncoding("UTF-8");
hResponse.setCharacterEncoding("UTF-8");
chain.doFilter(hRequest, hResponse);
}
?
public void init(FilterConfig arg0) throws ServletException {
?
}
?
}
<-- 过滤结束-->
<!-- jsp页面开始-->
?
? <body>
?
<P>选择要上传的文件：<BR>
? ?<FORM action="<%=basePath %>UpFile" method="post" ENCTYPE="multipart/form-data">
? ? ? <INPUT type=FILE name="boy" size="45">?
? ? ? <BR> <INPUT type="submit" name ="g" value="提交">
? ?</FORM>
?
? ? ?<!-- 文件名应该为查询出来的，在这里先使用刚上传的文件名 -->
? ?<%?
String fname ="mark.txt";
? ? ?%>
?
? 支持目标另存为
?<A target="_blank" href="<%=basePath%>DownFile?filename=<%=fname%>">下 载</A>
?
? </body>
<!--jsp页面结束 -->
?
?
注：配置一下web.xml
你好，通过对IE，Google,Firefox三个浏览器上传测试没有发现中文乱码，不过在下载时点击另存为---出现的文件名倒是乱码。这个问题我也一直在找。