我正在创建一个android客户端 - 服务器应用程序，我将图像上传到托管在JBOSS服务器上的servlet。用于将pic上传到servlet的Android代码就是这样.... bmp是BITMAP格式的图像......
if (bmp != null) {
HttpClient httpClient = new DefaultHttpClient();
HttpContext httpContext = new BasicHttpContext();
HttpPost httpPost = new HttpPost(getString(R.string.postImageUri));
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bmp.compress(CompressFormat.JPEG, 75, byteArrayOutputStream);
byte[] byteData = byteArrayOutputStream.toByteArray();
ByteArrayBody byteArrayBody = new ByteArrayBody(byteData, "image");
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
builder.addPart("image",byteArrayBody);
httpPost.setEntity(builder.build());
try {
HttpResponse httpResponse = httpClient.execute(httpPost,httpContext);
System.out.println(httpResponse.toString());
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
我正在使用multipart builder来发送它。 JAVA servlet是这样的......
public class ImageCapture extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
System.out.println("You need to post an image.");
PrintWriter out = response.getWriter();
out.println("Please post an image..");
out.flush();
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
long time = System.currentTimeMillis();
System.out.println("Got a post - " + time);
try{
// get the image from the app
ObjectInputStream ois = new ObjectInputStream(request.getInputStream());
byte[] imageBytes = (byte[]) ois.readObject();
PlanarImage image = ImageUtil.getAsImage(imageBytes);
ois.close();
System.out.println("Read image from stream...");
// save a copy for inspection
ImageUtil.saveImage(image, time + "_y");
// clean up the image
Restore r = new Restore();
image = r.cleanThroughGlass(image);
System.out.println("Image cleaned...");
System.out.println( getProcessingTime(time, System.currentTimeMillis()) );
// save a copy of cleaned version
ImageUtil.saveImage(image, time + "_x");
// send image back to app
System.out.println("Sending back to client...");
imageBytes = ImageUtil.getAsBytes(image);
ObjectOutputStream oos = new ObjectOutputStream(response.getOutputStream());
oos.writeObject( imageBytes );
oos.flush();
oos.close();
}catch( Exception e ){
System.out.println("Trouble on the servlet!!!");
e.printStackTrace();
}
System.out.println("Done!");
}
当我尝试上传图片时，我收到以下服务器异常..
11:11:53,406 INFO [stdout] (http--0.0.0.0-8080-2) You need to post an image.
11:59:07,535 INFO [stdout] (http--0.0.0.0-8080-2) You need to post an image.
11:59:51,311 INFO [stdout] (http--0.0.0.0-8080-1) Got a post - 1403888391311
11:59:51,314 INFO [stdout] (http--0.0.0.0-8080-1) Trouble on the servlet!!!
11:59:51,315 ERROR [stderr] (http--0.0.0.0-8080-1) java.io.StreamCorruptedException: invalid stream header: 2D2D3375
11:59:51,317 ERROR [stderr] (http--0.0.0.0-8080-1) at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:804)
11:59:51,318 ERROR [stderr] (http--0.0.0.0-8080-1) at java.io.ObjectInputStream.<init>(ObjectInputStream.java:299)
11:59:51,320 ERROR [stderr] (http--0.0.0.0-8080-1) at VinCapture.doPost(VinCapture.java:39)
11:59:51,321 ERROR [stderr] (http--0.0.0.0-8080-1) at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
11:59:51,322 ERROR [stderr] (http--0.0.0.0-8080-1) at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
11:59:51,323 ERROR [stderr] (http--0.0.0.0-8080-1) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
11:59:51,325 ERROR [stderr] (http--0.0.0.0-8080-1) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
11:59:51,327 ERROR [stderr] (http--0.0.0.0-8080-1) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
11:59:51,328 ERROR [stderr] (http--0.0.0.0-8080-1) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
11:59:51,330 ERROR [stderr] (http--0.0.0.0-8080-1) at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
11:59:51,332 ERROR [stderr] (http--0.0.0.0-8080-1) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
11:59:51,333 ERROR [stderr] (http--0.0.0.0-8080-1) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
11:59:51,335 ERROR [stderr] (http--0.0.0.0-8080-1) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
11:59:51,337 ERROR [stderr] (http--0.0.0.0-8080-1) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
11:59:51,339 ERROR [stderr] (http--0.0.0.0-8080-1) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
11:59:51,340 ERROR [stderr] (http--0.0.0.0-8080-1) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
11:59:51,342 ERROR [stderr] (http--0.0.0.0-8080-1) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
11:59:51,344 ERROR [stderr] (http--0.0.0.0-8080-1) at java.lang.Thread.run(Thread.java:745)
11:59:51,345 INFO [stdout] (http--0.0.0.0-8080-1) Done!