在后台文件中：
private File image; //文件
private String imageFileName; //文件名称
public String upload(){
String realPath=ServletActionContext.getServletContext().getRealPath("/imag");
File file=new File(realPath);
if(!file.exists()){
file.mkdirs();
}
try {
FileUtils.copyFile(image, new File(file,imageFileName)); //copy到imag文件中
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return "success";
}
public File getImage() {
return image;
}
public void setImage(File image) {
this.image = image;
}
public String getImageFileName() {
return imageFileName;
}
public void setImageFileName(String imageFileName) {
this.imageFileName = imageFileName;
}
jsp页面中：
<form action="user/user_upload.action" method="post" enctype="multipart/form-data">
<input type="file" name="image" border="1"/> <input type="submit" value="上传"/>
</form>
这样就可以实现简单的文件上传了！