[英]How to upload a file to a specific folder in struts 2
I want to upload a file from a struts action. 我想通过struts动作上传文件。 I need in that action the path for my folder: 在该操作中,我需要文件夹的路径:
I tried using 我尝试使用
String contextPath = request.getContextPath();
but I'm getting java.lang.NullPointerException
但是我正在获取java.lang.NullPointerException
Either store in Catalina which is parent folder to your project folder 在Catalina中的任一商店(这是项目文件夹的父文件夹)
String rootPath = System.getProperty("catalina.home");
File dir = new File(rootPath + File.separator + "yourfolderName");
if (!dir.exists())
dir.mkdirs();
// Create the file on server
java.util.Date date= new java.util.Date();
String Path = dir.getAbsolutePath() + File.separator + (new Timestamp(date.getTime())).toString().replace(":", "").toString().replace(".", ".").toString().replace(" ","").toString().replace("-","").toString()+".pdf";
Or make a folder in your project and store there. 或者在您的项目中创建一个文件夹并存储在其中。
if (!file.isEmpty()) {
//filter for checking file extewnsion
if(file.getContentType().equalsIgnoreCase("image/jpg") || file.getContentType().equalsIgnoreCase("image/jpeg")){
//if file is >2 MB or < 2MB
double size = file.getSize();
double kilobytes = (size / 1024);
double megabytes = (kilobytes / 1024);
if(megabytes<2){
try {
byte[] bytes = file.getBytes();
String filePath = request.getRealPath("/")+"yourFolderName\\ProfileImages\\"+SessionManagement.getUserName()+".jpg";
BufferedOutputStream stream =
new BufferedOutputStream(new FileOutputStream(new File(filePath)));
stream.write(bytes);
stream.close();
//console call
}
else{
model.put("error", "Please select File less than 2 MB");
return new ModelAndView("uploadPhotoTile");
}
}else{
model.put("error", "Please select JPEG File");
return new ModelAndView("uploadPhotoTile");
}
} else {
model.put("error", "Please select File");
return new ModelAndView("uploadPhotoTile");
}
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