我想在我的程序中获取下拉值,以便将字符串合并到我的文件路径中,以便路径将根据用户输入动态更改。在我使用 o'reilly api 之前,我是 apache commoms 的新手。
这是我的代码:
@Override
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, java.io.IOException
{
//FileItem f1;
String d1= request.getParameter("sel1");
String d2=request.getParameter("sel2");
String d3="/home/adapco/Desktop/output";
String conc=d3+"/"+d1+"/"+d2+"/";
filePath=(new StringBuilder()).append(conc).toString();
// filePath="/home/adapco/Desktop/output/";
isMultipart = ServletFileUpload.isMultipartContent(request);
}
我尝试调试并且我得到了 wright 文件路径,但是在继续进行时,fileItems 显示 size=0 并且由于 size0 而它没有进入循环。
filePath="/home/adapco/Desktop/output/";
如果我将上传路径传递给 filePath 它工作正常。
List fileItems = upload.parseRequest(request);
Iterator i = fileItems.iterator();
while ( i.hasNext () )
{
FileItem fi = (FileItem)i.next();
if ( !fi.isFormField () )
{
String fieldName = fi.getFieldName();
String fileName = fi.getName();
String contentType = fi.getContentType();
boolean isInMemory = fi.isInMemory();
long sizeInBytes = fi.getSize();
if( fileName.lastIndexOf("\\") >= 0 ){
file = new File( filePath +
fileName.substring( fileName.lastIndexOf("\\"))) ;
}else{
file = new File( filePath +
fileName.substring(fileName.lastIndexOf("\\")+1)) ;
}
fi.write( file ) ;
out.println("Uploaded Filename: " + fileName + "<br>"+filePath);
}
我的 html :
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<title>File Uploading Form</title>
</head>
<body>
<h3>File Upload:</h3>
Select a file to upload: <br />
<form action="upload" method="post"
enctype="multipart/form-data">
<input type="file" name="file">
<br />
<select name="sel1">
<option label ="1">aerospace</option>
<option label ="2">automotive</option>
</select>
<select name="sel2">
<option label="1">internal</option>
<option label="2">demo</option>
</select>
<input type="submit" value="Upload File" />
</form>
</body>
</html>