服务器端HTTP API， 我是基于Spring3 MVC实现的Controller，代码如下：
@RequestMapping(value = "/uploadMyImage/{token}",method = RequestMethod.POST)
public @ResponseBody String getUploadFile(HttpServletRequest request,HttpServletResponse response,@PathVariable String token) {
logger.info("spring3 MVC upload file with Multipart form");
logger.info("servlet context path : " + request.getSession().getServletContext().getRealPath("/"));
UserDto profileDto = userService.getUserByToken(token);
String imgUUID = "";
try {
if (request instanceof MultipartHttpServletRequest && profileDto.getToken() != null) {
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
logger.info("spring3 MVC upload file with Multipart form");
// does not work,oh my god!!
MultipartFile file = multipartRequest.getFiles("myfile").get(0);
InputStream input = file.getInputStream();
long fileSize = file.getSize();
BufferedImage image = ImageIO.read(input);
// create data transfer object
ImageDto dto = new ImageDto();
dto.setCreateDate(new Date());
dto.setFileName(file.getOriginalFilename());
dto.setImage(image);
dto.setCreator(profileDto.getUserName());
dto.setFileSize(fileSize);
dto.setType(ImageAttachmentType.CLIENT_TYPE.getTitle());
dto.setUuid(UUID.randomUUID().toString());
/// save to DB
imgUUID = imageService.createImage(dto);
input.close();
}
} catch (Exception e) {
e.printStackTrace();
logger.error("upload image error",e);
}
return imgUUID;
}
package com.demo.http;
import java.io.BufferedInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Random;
import android.os.Handler;
import android.util.Base64;
import android.util.Log;
public class UploadImageTask implements APIURLConstants {
private String requestURL = DOMAIN_ADDRESS + UPLOAD_DESIGN_IMAGE_URL; // default
private final String CRLF = "\r\n";
private Handler handler;
private String token;
public UploadImageTask(String token,Handler handler) {
this.handler = handler;
this.token = token;
}
public String execute(File...files) {
InputStream inputStream = null;
HttpURLConnection urlConnection = null;
FileInputStream fileInput = null;
DataOutputStream requestStream = null;
handler.sendEmptyMessage(50);
try {
// open connection
URL url = new URL(requestURL.replace("{token}",this.token));
urlConnection = (HttpURLConnection) url.openConnection();
// create random boundary
Random random = new Random();
byte[] randomBytes = new byte[16];
random.nextBytes(randomBytes);
String boundary = Base64.encodeToString(randomBytes,Base64.NO_WRAP);
/* for POST request */
urlConnection.setDoOutput(true);
urlConnection.setDoInput(true);
urlConnection.setUseCaches(false);
urlConnection.setRequestMethod("POST");
long size = (files[0].length() / 1024);
if(size >= 1000) {
handler.sendEmptyMessage(-150);
return "error";
}
// 构建Entity form
urlConnection.setRequestProperty("Connection","Keep-Alive");
urlConnection.setRequestProperty("Content-Type","multipart/form-data;boundary=" + boundary);
urlConnection.setRequestProperty("Cache-Control","no-cache");
// never try to chunked mode,you need to set a lot of things
//if(size > 400) {
//urlConnection.setChunkedStreamingMode(0);
//}
//else {
//urlConnection.setFixedLengthStreamingMode((int)files[0].length());
//}
// end comment by zhigang on 2016-01-19
/* upload file stream */
fileInput = new FileInputStream(files[0]);
requestStream = new DataOutputStream(urlConnection.getOutputStream());
String nikeName = "myfile";
requestStream = new DataOutputStream(urlConnection.getOutputStream());
requestStream.writeBytes("--" + boundary + CRLF);
requestStream.writeBytes("Content-Disposition: form-data; name=\"" + nikeName + "\"; filename=\"" + files[0].getName() + "\""+ CRLF);
requestStream.writeBytes("Content-Type: " + getMIMEType(files[0]) + CRLF);
requestStream.writeBytes(CRLF);
// 写图像字节内容
int bytesRead;
byte[] buffer = new byte[8192];
handler.sendEmptyMessage(50);
while((bytesRead = fileInput.read(buffer)) != -1) {
requestStream.write(buffer,bytesRead);
}
requestStream.flush();
requestStream.writeBytes(CRLF);
requestStream.flush();
requestStream.writeBytes("--" + boundary + "--" + CRLF);
requestStream.flush();
fileInput.close();
// try to get response
int statusCode = urlConnection.getResponseCode();
if (statusCode == 200) {
inputStream = new BufferedInputStream(urlConnection.getInputStream());
String imageuuId = HttpUtil.convertInputStreamToString(inputStream);
Log.i("image-uuid","uploaded image uuid : " + imageuuId);
handler.sendEmptyMessage(50);
return imageuuId;
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(requestStream != null) {
try {
requestStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(fileInput != null) {
try {
fileInput.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (urlConnection != null) {
urlConnection.disconnect();
}
}
handler.sendEmptyMessage(50);
return null;
}
private String getMIMEType(File file) {
String fileName = file.getName();
if(fileName.endsWith("png") || fileName.endsWith("PNG")) {
return "image/png";
}
else {
return "image/jpg";
}
}
}
经过本人测试，效果杠杠的！！所以请忘记HttpClient这个东西，android开发再也不需要它了。