老师请教哈这个问题:
部分代码:if (!item.isFormField()) {
String name = item.getName();
long size = item.getSize();
if ((name == null || name.equals("")) && size == 0)
continue;
Matcher m = p.matcher(name);
out.println("m="+m);
boolean result = m.find();
out.println("result="+result);
if (result) {
for (int temp = 0; temp < errorType.length; temp++) {
if (m.group(1).endsWith(errorType[temp])) {
throw new IOException(name + ": wrong type");
}
为什么m有值,result=false;啊?难道boolean result = m.find();find()
这个方法有问题
。。还是有新方法boolean
部分代码:if (!item.isFormField()) {
String name = item.getName();
long size = item.getSize();
if ((name == null || name.equals("")) && size == 0)
continue;
Matcher m = p.matcher(name);
out.println("m="+m);
boolean result = m.find();
out.println("result="+result);
if (result) {
for (int temp = 0; temp < errorType.length; temp++) {
if (m.group(1).endsWith(errorType[temp])) {
throw new IOException(name + ": wrong type");
}
为什么m有值,result=false;啊?难道boolean result = m.find();find()
这个方法有问题
。。还是有新方法boolean
size=273815
m=java.util.regex.Matcher[pattern=.+\\(.+)$ region=0,23 lastmatch=]
result=false
java.io.IOException: fail to upload
// 正则匹配,过滤路径取文件名
String regExp = ".+\\\\(.+)$";
throws ServletException, IOException {
res.setContentType("text/html; charset=GB2312");
PrintWriter out = res.getWriter();
System.out.println(req.getContentLength());
System.out.println(req.getContentType());
DiskFileItemFactory factory = new DiskFileItemFactory();
// maximum size that will be stored in memory
factory.setSizeThreshold(4096);
// the location for saving data that is larger than getSizeThreshold()
factory.setRepository(new File("d:\\temp\\")); ServletFileUpload upload = new ServletFileUpload(factory);
// maximum size before a FileUploadException will be thrown
upload.setSizeMax(1000000);
try {
List fileItems = upload.parseRequest(req);
// assume we know there are two files. The first file is a small
// text file, the second is unknown and is written to a file on
// the server
Iterator iter = fileItems.iterator(); // 正则匹配,过滤路径取文件名
String regExp = ".+\\\\(.+)$"; // 过滤掉的文件类型
String[] errorType = { ".exe", ".com", ".cgi", ".jsp" };
Pattern p = Pattern.compile(regExp);
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
/*if(item.isFormField()) {
if(item.getFieldName().equals("id")) {
id = Integer.parseInt(item.getString());
}
}*/
// 忽略其他不是文件域的所有表单信息
if (!item.isFormField()) {
String name = item.getName();
long size = item.getSize();
out.println("name="+name);
out.println("size="+size);
if ((name == null || name.equals("")) && size == 0)
continue;
Matcher m = p.matcher(name);
out.println("m="+m);
boolean result = m.find();
out.println("result="+result);
if (result) {
for (int temp = 0; temp < errorType.length; temp++) {
if (m.group(1).endsWith(errorType[temp])) {
throw new IOException(name + ": wrong type");
}
}
try { // 保存上传的文件到指定的目录 // 在下文中上传文件至数据库时,将对这里改写
item.write(new File("d:\\" + m.group(1))); out.print(name + " " + size + "<br>");
} catch (Exception e) {
out.println(e);
} } else {
throw new IOException("fail to upload");
}
}
}
} catch (IOException e) {
out.println(e);
} catch (FileUploadException e) {
out.println(e);
}