var a=document.querySelector('input[type=file]'); a.onchange = function (e) { //var reader = new FileReader();//reader.readAsDataURL(a.files[0]);//reader.onload = function (event) {//img.src = event.target.result;//}; var reader = new FileReader(); r
个人学习,仅供参考! package com.example.administrator.filemanager.utils;import java.io.File;/** * 文件类型工具类 * */public class FileTypeUtil { public static final String TYPE_ANY = "all"; public static final String TYPE_TXT = "txt"; public