本文是《页面ajax上传图片后，后台上传图片服务器后回显》发出后，很多网友说，不能多图片上传的。
所以，本篇介绍多图片上传。
解决思路：
先获取MultipartFile multipartFile 对象。在进行循环遍历得到单个对象。
首先，我们来回顾下，单图片上传的后台代码：
请求参数中：
需要@RequestParam("file")%20MultipartFile%20multipartFile且是必填的。
通过multipartFile.transferTo(file)将图片复制。如下图
这是单图的主要思路。
多图上传开始：
1：创建一个通用的多部分解析器
2：循环得到单个后放到list中：
得到list后，在按照单个图片出来思路进行处理,就可以。
示例代码：
%20@RequestMapping(value%20=%20"/ckeditorUpload")
%20public%20String%20ckeditorUpload(HttpServletResponse%20response
%20,HttpServletRequest%20request
%20)%20throws%20Exception%20{%20
%20InputStream%20is%20=%20null;
OutputStream%20os%20=%20null;
PrintWriter%20out%20=%20null;
String%20path%20=%20request.getSession().getServletContext().getRealPath("/uploadDoc");%20
File%20deleteBigImgFile%20=%20new%20File(path);
try%20{
if(null!=upload){
}
//%20图片名称
%20String%20fileName%20=%20null;
//%20创建一个通用的多部分解析器
%20CommonsMultipartResolver%20multipartResolver%20=%20new%20CommonsMultipartResolver(request.getSession()
%20.getServletContext());
%20//%20MultipartFile%20mfile%20=%20null;
%20List<MultipartFile>%20mfileList%20=%20new%20ArrayList<MultipartFile>();
%20if%20(multipartResolver.isMultipart(request))%20{
//%20转换成多部分request
%20MultipartHttpServletRequest%20multiRequest%20=%20(MultipartHttpServletRequest)%20request;
%20//%20取得request中的所有文件名
%20Iterator<String>%20iter%20=%20multiRequest.getFileNames();
%20while%20(iter.hasNext())%20{
%20MultipartFilemfile%20=%20multiRequest.getFile(iter.next());
%20if%20(mfile%20!=%20null)%20{
%20//%20取得当前上传文件的文件名称
%20String%20myFileName%20=%20mfile.getOriginalFilename();
%20//%20如果名称不为“”,说明该文件存在，否则说明该文件不存在
%20if%20(myFileName.trim()%20!=%20"")%20{
%20//%20获得图片的原始名称
%20String%20originalFilename%20=%20mfile.getOriginalFilename();
%20fileName=originalFilename;
%20}
%20mfileList.add(mfile);
%20}
%20}
%20}
response.setCharacterEncoding("UTF-8");
out%20=%20response.getWriter();
String%20suffix%20=%20fileName.substring(fileName.lastIndexOf("."));
if(!suffix.toLowerCase().equals(".webp")%20&&%20!suffix.toLowerCase().equals(".webp")%20){
out.print("<font%20color=\"red\"size=\"2\">*文件格式不正确（必须为.webp/.webp/.bmp/.webp文件）</font>");
return null;
}
File file = new File(path);
// 如果指定的路径没有就创建
if (!file.exists()) {
file.mkdirs();
}
try {
if(null != mfileList && !mfileList.isEmpty()){
MultipartFile mfileList = mfileList.get(0);
fileName =System.currentTimeMillis()+"_"+UUID.randomUUID().toString()+suffix;
File uploadFile = new File(file +File.separator+fileName);
deleteBigImgFile = new File(file +File.separator+fileName);
mfile.transferTo(uploadFile);
} catch (Exception e) {
System.out.println("上传图片时候异常了："+e);
e.printStackTrace();
}
}
FileInputStream in1 = null;
String fileName1 = null;
try {
in1 = new FileInputStream(new File(path+"/"+fileName));
fileName1 = System.currentTimeMillis()+"_"+UUID.randomUUID().toString()+suffix;
//防止FTP上传到服务器乱码
String uploadFileName = fileName;
String realName1 = new String(uploadFileName.getBytes("utf-8"), "ISO-8859-1");
fileName1=realName1;
boolean isOk = FTPUpLoad.uploadFile(ftpServer, ftpPort, ftpUser, ftpPassword, fileFtpStortPath, realName1, in1);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}finally{
try {
if(null != deleteBigImgFile && deleteBigImgFile.exists()){
deleteBigImgFile.delete();
}
in1.close();
} catch (IOException e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if(null!=is){
is.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
