验证下传的文件是否允许

验证上传的文件是否允许

/***
? * 验证上传的文件是否允许
? * @param forefile
? * @return
? */
?public static boolean validateFileType(FormFile formfile){
??if(formfile != null && formfile.getFileSize() > 0){
???List<String> arrowType = Arrays.asList("image/gif","image/jpg","image/bmp","image/png","image/jpeg","image/pjpeg"
?????,"application/x-shockwave-flash","text/plain","application/msword","application/pdf",
?????"application/vnd.ms-powerpoint","application/vnd.ms-excel");
???String ext = formfile.getFileName().substring(formfile.getFileName().lastIndexOf(".")+1).toLowerCase();
???List<String> arrowExtension = Arrays.asList("gif","jpg","bmp","png","swf"
?????,"doc","txt","xls","pdf");
???return arrowType.contains(formfile.getContentType().toLowerCase())&&arrowExtension.contains(ext);
??}
??return true;
?}
?/***
? * 用属性文件的方式验证上传的文件是否合法
? */
?private static Properties properties = new Properties();
?static{
??try {//通过类加载器加载文件
???properties.load(BaseForm.class.getResourceAsStream("arrowuploadfiletype.properties"));
??} catch (IOException e) {
???e.printStackTrace();
??}
?}
?public static boolean validateFileType2(FormFile formfile){
??if(formfile != null && formfile.getFileSize() > 0){
???String ext = formfile.getFileName().substring(formfile.getFileName().lastIndexOf(".")+1).toLowerCase();
???List<String> arrowType = new ArrayList<String>();
???for(Object key : properties.keySet()){
????String value = (String)properties.get(key);?
????String[] values = value.split(",");
????for(String v : values){
?????arrowType.add(v.trim());
????}
???}
???return arrowType.contains(formfile.getContentType().toLowerCase())&&properties.keySet().contains(ext);
??}
??return true;
?}