I have created a java program that can upload a file to a ckan installation, (currently my local testing installation, haven't tested it on a live one).
The text files that i tested my application are uploaded to ckan properly. I do have a problem with some zip files.
After some test and failure attempts, i realized that the problem is in the size of the file. For zip files less than 4Kb it works, but for larger files it fails with the error "server Error".
The files failing to upload via my java application, upload just fine when using the ckan front end, so i am guessing the problem is with my java application and not the ckan installation. This is the code I am using:
StringBuilder sb = new StringBuilder();
CloseableHttpClient httpclient = HttpClientBuilder.create().build();
File file = new File(uploadFileName);
SimpleDateFormat dateFormatGmt = new SimpleDateFormat("yyyyMMdd_HHmmss");
String date=dateFormatGmt.format(new Date());
HttpPost postRequest;
try {
ContentType zipType=ContentType.create("zip");
ContentBody cbFile = new FileBody(file,zipType);
HttpEntity reqEntity = MultipartEntityBuilder.create()
.addPart("file", cbFile)
.addPart("url",new StringBody(HOST+"/files/"+date+"/"+uploadFileName,ContentType.TEXT_PLAIN))
.addPart("upload",cbFile)
.addPart("title",new StringBody(TITLE,ContentType.TEXT_PLAIN))
.addPart("description",new StringBody(DESCRIPTION+date,ContentType.TEXT_PLAIN))
.addPart("comment",new StringBody(COMMENT,ContentType.TEXT_PLAIN))
.addPart("key", new StringBody(uploadFileName+date,ContentType.TEXT_PLAIN))
.addPart("package_id",new StringBody("test2",ContentType.TEXT_PLAIN))
.addPart("notes", new StringBody("notes",ContentType.TEXT_PLAIN))
.build();
postRequest = new HttpPost(HOST+"/api/action/resource_create");
postRequest.setEntity(reqEntity);
postRequest.setHeader("X-CKAN-API-Key", myApiKey);
HttpResponse response = httpclient.execute(postRequest);
int statusCode = response.getStatusLine().getStatusCode();
BufferedReader br = new BufferedReader(
new InputStreamReader((response.getEntity().getContent())));
}
catch (IOException ioe) {
System.out.println(ioe);
}
finally {
httpclient.getConnectionManager().shutdown();
}
Related
This code reads the firmware upgrade file from JAR package and send as Post request to device:
CloseableHttpClient client2 = HttpClients.createDefault();
HttpPost post = new HttpPost("http://" + IP + "/moxa-cgi/UploadFirmwareFile.cgi");
InputStream stream = Main.class.getResourceAsStream("vport364a_v1_5.rom");
byte b[] = new byte[stream.available()];
stream.read(b);
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
builder.addBinaryBody("uploadfile", b, ContentType.APPLICATION_OCTET_STREAM, "vport364a_v1_5.rom");
post.setEntity(builder.build());
HttpResponse response2 = client2.execute(post);
For unknown reasons, the code stopped working as execute jar package: firmware upgrade file send as nulls. On line:
stream.read(b);
only nulls already.
If I run code in IDE Netbeans, it works.Why?
I am trying to upload an image file using http-client from my Google Glass to my server but it always gets stuck at the httpclient.execute() method. I am not sure how should I approach uploading files from my Glass. This is what I have so far:
httpClient = HttpUtils.getNewHttpsClient();
postRequest = new HttpPost(strURL);
final File file= new File("mnt/sdcard/DCIM/Camera/12232.jpg");
s = new StringBuilder();
try
{
if(file.exists())
{
final FileBody bin = new FileBody(file);
final MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
reqEntity.addPart("uid", new StringBody(username,Charset.forName("UTF-8")));
reqEntity.addPart("pwd", new StringBody(password,Charset.forName("UTF-8")));
if(encKey!=null && !encKey.equals(""))
reqEntity.addPart("pvtkey", new StringBody(encKey,Charset.forName("UTF-8")));
reqEntity.addPart("p", new StringBody(selectedDrivePath,Charset.forName("UTF-8")));
reqEntity.addPart("ornt", new StringBody(fornt,Charset.forName("UTF-8")));
reqEntity.addPart("file_size", new StringBody(strfilesize,Charset.forName("UTF-8")));
reqEntity.addPart("data", bin);
contentLength=reqEntity.getContentLength();
postRequest.setEntity(reqEntity);
final HttpResponse response = httpClient.execute(postRequest);
...
}
...
}
...
Where am I going wrong?
You may want to ensure you have reviewed the following description for media uploading. from the developer site for Google Glass.
I know this is basic (many stack*overflow* community members prefer that you already have researched a problem before posting here), so you really should visit https://developers.google.com/glass.
I am trying to upload any file from Java Console application to ASP.NET MVC web application.
For this, I am using Apache HttpClient library.
ConsoleApplication.java
HttpClient httpclient = new DefaultHttpClient();
httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
HttpPost httppost = new HttpPost("http://localhost:52031/home/DataPost");
File file = new File("A.txt");
MultipartEntity mpEntity = new MultipartEntity();
ContentBody cbFile = new FileBody(file, "multipart/form-data");
mpEntity.addPart("file", cbFile);
httppost.setEntity(mpEntity);
System.out.println("executing request " + httppost.getRequestLine());
HttpResponse response = httpclient.execute(httppost);
httpclient.getConnectionManager().shutdown();// Get the response
BufferedReader rd = new BufferedReader
(new InputStreamReader(response.getEntity().getContent()));
String line = "";
StringBuilder builder=new StringBuilder();
while ((line = rd.readLine()) != null)
{
builder.append(line);
}
System.out.println(builder.toString());
ASP.NET HomeController.cs
[HttpPost]
public string DataPost(HttpPostedFile file)
{
return file.FileName.ToString();
}
I carefully debugged the above code and found out that java program properly accessing DataPost method, but could not upload the file as file parameter is null in the method.
I google about it and found some stackoverflow questions on java httpclient, but none of the questions are about server side implementation.
Please let me know, where I am doing wrong.
Thanks
I am using the answer here to try to make a POST request with a data upload, but I have unusual requirements from the server-side. The server is a PHP script which requires a filename on the Content-Disposition line, because it is expecting a file upload.
Content-Disposition: form-data; name="file"; filename="-"
However, on the client side, I would like to post an in-memory buffer (in this case a String) instead of a file, but have the server process it as though it were a file upload.
However, using StringBody I cannot add the required filename field on the Content-Disposition line. Thus, I tried to use FormBodyPart, but that just put the filename on a separate line.
HttpPost httppost = new HttpPost(url);
MultipartEntity entity = new MultipartEntity();
ContentBody body = new StringBody(data,
org.apache.http.entity.ContentType.APPLICATION_OCTET_STREAM);
FormBodyPart fbp = new FormBodyPart("file", body);
fbp.addField("filename", "-");
entity.addPart(fbp);
httppost.setEntity(entity);
How can I get a filename into the Content-Disposition line, without first writing my String into a file and then reading it back out again?
Try this
StringBody stuff = new StringBody("stuff");
FormBodyPart customBodyPart = new FormBodyPart("file", stuff) {
#Override
protected void generateContentDisp(final ContentBody body) {
StringBuilder buffer = new StringBuilder();
buffer.append("form-data; name=\"");
buffer.append(getName());
buffer.append("\"");
buffer.append("; filename=\"-\"");
addField(MIME.CONTENT_DISPOSITION, buffer.toString());
}
};
MultipartEntity entity = new MultipartEntity();
entity.addPart(customBodyPart);
As a cleaner alternative to creating an extra anonymous inner class and adding side effects to protected methods, use FormBodyPartBuilder:
StringBody stuff = new StringBody("stuff");
StringBuilder buffer = new StringBuilder();
buffer.append("form-data; name=\"");
buffer.append(getName());
buffer.append("\"");
buffer.append("; filename=\"-\"");
String contentDisposition = buffer.toString();
FormBodyPartBuilder partBuilder = FormBodyPartBuilder.create("file", stuff);
partBuilder.setField(MIME.CONTENT_DISPOSITION, contentDisposition);
FormBodyPart fbp = partBuilder.build();
The whole thing works perfectly, except image won't show, no errors, Using RoR. What am I missing? All called by async class btw. Been trying several different methods with no avail, if someone could help me out that would be great. Willing to post more if needed.
Thanks!
public static void multiPart(Bitmap image, String topicid, String topost, Context c){
String responseString = "";
{
try {
String imageName = System.currentTimeMillis() + ".jpg";
HttpClient httpClient = new MyHttpClient(c);
HttpPost postRequest = new HttpPost("https://urlofmyapi");
if (image==null){
Log.d("TAG", "NULL IMAGE");
}
ByteArrayOutputStream bos = new ByteArrayOutputStream();
image.compress(CompressFormat.JPEG, 75, bos);
byte[] data = bos.toByteArray();
ByteArrayBody bab = new ByteArrayBody(data, imageName);
MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
reqEntity.addPart("feed", new StringBody(topost));
reqEntity.addPart("post_to", new StringBody(topicid));
reqEntity.addPart("upload_file", bab);
postRequest.setEntity(reqEntity);
HttpResponse response = httpClient.execute(postRequest);
BufferedReader reader = new BufferedReader(
new InputStreamReader(
response.getEntity().getContent(), "UTF-8"));
String sResponse;
StringBuilder s = new StringBuilder();
while ((sResponse = reader.readLine()) != null) {
s = s.append(sResponse);
}
responseString = s.toString();
System.out.println("Response: " + responseString);
} catch (Exception e) {
Log.e(e.getClass().getName(), e.getMessage());
}
}
}
Perhaps you can do following step to import library into your Android.
requirement library:
apache-mime4j-0.6.jar
httpmime-4.0.1.jar
Right click your project and click properties
select java build path
select tab called "Order and Export"
Apply it
Fully uninstall you apk file with the adb uninstall due to existing apk not cater for new library
install again your apk
run it
Thanks,
Jenz
HTTP POSTing images from Java to RoR always seems to have undue issues for me. Have you tried attaching the binary as a org.apache.http.entity.mime.content.FileBody object, like this Android Multipart Upload question?