上传图片、文件等，及文件夹
一、上传图片，文件（ajax上传，并返回提示信息）
前端界面(jsp,css,jquery等）
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="multipart/form-data; charset=utf-8" />
<title>Insert title here</title>
<script type="text/javascript" src="../js/jquery-3.3.1.js"></script>
<script type="text/javascript">
function upload() {
var uploadfile= $("#uploadfile")[0].files[0];
var formData = new FormData();
formData.append('uploadfile',uploadfile);
$.ajax({
async: false,
url:'uploadadd.do',
type:'post',
data:formData,
processData:false,
contentType:false,
success:function (data) {
alert(data);
}， error:function () {
alert("失败");
}
});
}
</script>
</head>
<body>
<form class="tabson" enctype="multipart/form-data">
文件:<input type="file" name="uploadfile" id="uploadfile" >
<input type="button" onclick="upload()" value="上传文件">
</form>
</body>
</html>
控制层
@ResponseBody
@RequestMapping(value="uploadadd.do",method=RequestMethod.POST)
public String addAnnouncement(HttpServletRequest request,
@RequestParam("uploadfile") MultipartFile uploadfile) {
String name=uploadfile.getOriginalFilename();
String suffix = name.substring(name.lastIndexOf(".") + 1);
String localPath = request.getSession().getServletContext().getRealPath("/") + "data/Img_1";
System.out.println("商品存储路径：" + localPath);
// 创建图片名称
String filename = Uploadutil.getNowDate() + "." + suffix;
System.out.println(filename+"----------");
// 创建目录 文件夹为空就创建
File dir = new File(localPath);
if (!dir.exists()) {
//System.out.println("创建的文件夹为" + dir);
dir.mkdirs();
}
// 图片绝对路径，拼接图片路径
String realPath = dir +"/"+ filename;
String realPath1=realPath.replace("/", "\\");
System.out.println(realPath1.toString()+"---------------------------------");
// 写入图片 将图片保存在服务器下
File newFile = new File(realPath1);
try {
uploadfile.transferTo(newFile);
}catch( Exception e) {
e.printStackTrace();
}
System.out.println("request.getContextPath(): "+request.getContextPath());
// 拼接传输协议+域名+端口号+
String host = img_url + request.getContextPath();
// 数据库存储图片绝对路径
String sqlPath = host + "/data/Img/" + filename;
System.out.println("数据库存储的路径：" + sqlPath);
return "成功";
}
结果展示
1、界面返回成功状态
2、控制台打印的信息
二、上传excel 并解析excel内容
前端界面(jsp,css,jquery等）
<form action="uploadofexcel_1.do" enctype="multipart/form-data" method="post">
文件： <input type="file" name = "uploadFile" /><br>
<input type = "submit" value = "提交">
</form>
控制层
@RequestMapping(value = "uploadofexcel_1.do", produces = "application/text; charset=utf-8")
public String uploadofexcel_1(HttpServletRequest request,@RequestParam("uploadFile") MultipartFile uploadFile) {
if (uploadFile.isEmpty()) {
try {
throw new Exception("文件不存在！");
} catch (Exception e) {
e.printStackTrace();
}
}
InputStream in = null;
try {
in = uploadFile.getInputStream();
} catch (IOException e) {
e.printStackTrace();
}
List<List<Object>> listob = null;
try {
listob = new ExcelUtil().getBankListByExcel(in, uploadFile.getOriginalFilename());
} catch (Exception e) {
e.printStackTrace();
}
for (int i = 0; i < listob.size(); i++) {
List<Object> lg=listob.get(i);
System.out.println(lg);
}
System.out.println( uploadFile.getOriginalFilename());
return "redirect:ShowUpload.do";
}
结果展示（解析excel的结果）
1、excel里的信息，解析的内容为List< List< Object>>形式，可将其转换为Lst< Object>形式。
三、上传文件夹
前端界面(jsp,css,jquery等）
<form action="upload3.do" enctype="multipart/form-data" method="post">
图片： <input type="file" name = "pictureFile" webkitdirectory/><br>
<input type = "submit" value = "提交">
</form>
控制层
@RequestMapping(value="upload3.do",method=RequestMethod.POST)
public String insertpicture3(HttpServletRequest request,
@RequestParam("pictureFile") MultipartFile[] pictureFiles){
List<Picture> list=new ArrayList<Picture>();
int i=1;
for (MultipartFile mf : pictureFiles) {
if(!mf.isEmpty()) {
// 获取文件名
String name = mf.getOriginalFilename();
System.out.println(name);
// 获取文件后缀
String suffix = name.substring(name.lastIndexOf(".") + 1);
System.out.println("1-----"+suffix);
/* if (!suffix.equalsIgnoreCase("png") && !suffix.equalsIgnoreCase("gif") && !suffix.equalsIgnoreCase("jpg")
&& !suffix.equalsIgnoreCase("jpeg") && !suffix.equalsIgnoreCase("bmp")) {
return "文件类型错误，请上传图片文件";
} */
String localPath = request.getSession().getServletContext().getRealPath("/") + "data/Img";
System.out.println("商品存储路径：" + localPath);
// 创建图片名称
String filename = Uploadutil.getNowDate() +"-"+i+ "." + suffix;
i++;
System.out.println(filename+"----------");
// 创建目录 文件夹为空就创建
File dir = new File(localPath);
if (!dir.exists()) {
//System.out.println("创建的文件夹为" + dir);
dir.mkdirs();
}
// 图片绝对路径，拼接图片路径
String realPath = dir +"/"+ filename;
String realPath1=realPath.replace("/", "\\");
System.out.println(realPath1.toString()+"---------------------------------");
// 写入图片 将图片保存在服务器下
File newFile = new File(realPath1);
try {
mf.transferTo(newFile);
}catch( Exception e) {
e.printStackTrace();
}
System.out.println("request.getContextPath(): "+request.getContextPath());
// 拼接传输协议+域名+端口号+
String host = img_url + request.getContextPath();
// 数据库存储图片绝对路径
String sqlPath = host + "/data/Img/" + filename;
System.out.println("数据库存储的路径：" + sqlPath);
Picture pc=new Picture();
pc.setPname(filename);
pc.setUrls(sqlPath);
list.add(pc);
}
}
for (Picture picture : list) {
System.out.println(picture.toString());
}
//批量插入图片信息
int num=uploadserviceimpl.InsertOfPicture(list);
System.out.println(num);
return "redirect:ShowUpload.do";
}
上传的界面及结果
1、上传文件夹的界面，webkitdirectory指向的是文件夹，若不带webkitdirectory则指向的是根目录，各种文件
/2、Chrome浏览器带的功能，显示该文件夹下有多少个子文件
3、文件上传成功后显示的结果（原先有两个图片，此次上传的为4个文件）
4、控制器打印的结果，上传文件夹的信息
