Java 服务端接收多图上传

// Create a new file upload handlerServletFileUpload upload = new ServletFileUpload();// Parse the requestFileItemIterator iter = upload.getItemIterator(request);while (iter.hasNext()) {    FileItemStream item = iter.next();    String name = item.getFieldName();    InputStream stream = item.openStream();    if (item.isFormField()) {//表单        System.out.println("Form field " + name + " with value "            + Streams.asString(stream) + " detected.");    } else {//文件        System.out.println("File field " + name + " with file name "            + item.getName() + " detected.");        // Process the input stream        ...    }}

原文链接：http://commons.apache.org/proper/commons-fileupload/streaming.html

Demo:
DiskFileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List<FileItem> items = null;
try {
items = upload.parseRequest(req);
} catch (FileUploadException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}   //解析request请求
Iterator<FileItem> iter = items.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if (item.isFormField()) { //如果是表单域 ，就是非文件上传元素
//String name = item.getFieldName(); //获取name属性的值
String jsonString;
try {
jsonString = item.getString("UTF-8");
feed = mapper.readValue(jsonString, FeedModel.class);
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (JsonParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JsonMappingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else {
String fieldName = item.getFieldName(); //文件域中name属性的值
//String fileName = item.getName(); //文件的全路径，绝对路径名加文件名
//String contentType = item.getContentType(); //文件的类型
//long size = item.getSize(); //文件的大小，以字节为单位
File saveFile = new File("/Users/xxxx/Downloads/"+fieldName+".jpg"); //定义一个file指向一个具体的文件
try {
System.out.println(""+fieldName);
item.write(saveFile); //把上传的内容写到一个文件中
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
} 
}}