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Returning custom object with InputStream parameter in JAX-RS

I'm storing objects of type Binary in a database and I have a JAX-RS web service that can retrieve them by their ID.
public class Binary {
private InputStream data;
private String id;
private String name;
private String description;
... // constructors/getters/setters
}
I was able to get it working with this code:
#GET
#Path("{id}")
#Produces(MediaType.MULTIPART_FORM_DATA)
Response getBinary(#PathParam("id") String id) {
Binary binary = ... // get binary from database
FormDataMultiPart multipart = new FormDataMultiPart();
multipart.field("name", binary.getName());
multipart.field("description", binary.getDescription());
multipart.field("data", app.getData(),
MediaType.APPLICATION_OCTET_STREAM_TYPE);
return multipart;
}
I don't like wrapping the values in a FormDataMultiPart and unwrapping them in the client code. I want to directly return the Binary object like this:
#GET
#Path("{id}")
#Produces(/* ? */)
Binary getBinary(#PathParam("id") String id) {
Binary binary = ... // get binary from database
return binary;
}
I can't use XML or JSON representation because of the InputStream parameter.
I'd appreciate any help of how to deal with this problem. Thanks!

If you have data as InputStream you will have problems having to reset every time you read from the InputStream. Better have it as byte[].
If you are using jackson you can then return like:
#GET
#Path("{id}")
#Produces(/* ? */)
public Response get(String documentId) {
Binary binary = ... // get binary from database
return Response.ok(binary).build();
}
you can test it with:
CloseableHttpClient httpclient = HttpClients.createDefault();
ObjectMapper mapper = new ObjectMapper();
TestObj obj = new TestObj();
obj.setFile(IOUtils.toByteArray(new FileInputStream(new File("C:\\download.jpg"))));
obj.setMimetype("image/jpeg");
obj.setDescription("asd");
String jsonInString = mapper.writeValueAsString(obj);
HttpPost httpPost = new HttpPost("http://localhost:8080/url");
httpPost.setHeader("Authorization", "Bearer asdf");
httpPost.setHeader("Content-type", "application/json");
StringEntity se = new StringEntity(jsonInString);
httpPost.setEntity(se);
System.out.println(httpPost.toString());
CloseableHttpResponse response2 = httpclient.execute(httpPost);
try {
System.out.println("!!!! " + jsonInString);
System.out.println("!!!! " + se.toString());
System.out.println("!!!! " + response2.getStatusLine());
HttpEntity entity2 = response2.getEntity();
EntityUtils.consume(entity2);
} finally {
response2.close();
}

How to pass multipart file along with file name to post method using Apache httpclient 3.x?

service code:
#RequestMapping(value="/uploadFile", method=RequestMethod.POST, consumes = "multipart/form-data")
public String uploadFile(#RequestParam("file") MultipartFile file,#RequestParam("filePath") String filePath){
//logic here
}
Part of the client code:
public static synchronized String responseOfPost(String restUrl, FileSystemResource file,String filePath) {
PostMethod post = new PostMethod(restUrl);
HttpClient client = new HttpClient();
post.setParameter("filePath", filePath);
try {
Part[] parts = {new FilePart("file",file.getFile())};
post.addRequestHeader("Content-Type", "multipart/form-data; boundary=Endedlogging");
if (file != null) {
post.setRequestEntity(new MultipartRequestEntity(parts, post.getParams()));
}
client.executeMethod(post);
String response = post.getResponseBodyAsString();
} catch (final IOException e) {
e.printStackTrace();
}
return null;
}
this is the error I am getting:
org.springframework.web.bind.MissingServletRequestParameterException: Required MultipartFile parameter 'file' is not present
at org.springframework.web.method.annotation.RequestParamMethodArgumentResolver.handleMissingValue(RequestParamMethodArgumentResolver.java:251)
at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:96)
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:78)
at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:162)
How can I pass multipart file("file") and filePath("filePath") to POST method in client code? NOT FROM UI

I'm also getting the exception like FileNotFoundException with nearly same code as your's.So can you try with this change,it maybe helpful.
Part[] parts = {new FilePart(file.getName(),file)};

How to post json array inside json object in Android

I wanna send my data to web service. But i can't send
{ "OrgID":"1",
"UserDepartment":"1",
"WorkType":"1977",
"WorkDefinition":"EXAMPLE_EXAMPLE",
"Confirmed":[
{ "Confirmed":"qaAgo/+/j/XhECIhlAo2SQ==",
"Confirmed":"PJNd6u9RwTIwM4SRrom+mQ==",
"Confirmed":"75qFEZ7bnq+kCFvLS625Ww=="}],
"FileName":"",
"FileMimeType":"",
"FileContent":""
}
i can send all data except "Confirmed".
My Java codes here..
public static void sendParameter(String organizationId, String departmentId, String workType, String comfirmedList, String fileName, String fileMimeType, String fileContent, String definition) {
parameterList = new ArrayList<NameValuePair>();
parameterList.add(new BasicNameValuePair("OrgID", organizationId));
parameterList.add(new BasicNameValuePair("UserDepartment", departmentId));
parameterList.add(new BasicNameValuePair("WorkType", workType));
parameterList.add(new BasicNameValuePair("Confirmed", comfirmedList));
parameterList.add(new BasicNameValuePair("FileName", fileName));
parameterList.add(new BasicNameValuePair("FileMimeType", fileMimeType));
parameterList.add(new BasicNameValuePair("FileContent", fileContent));
parameterList.add(new BasicNameValuePair("WorkDefinition", definition));
}
How can i send Confirmed datas?

You can manually format the data as json string and sent the json string as entity to the request. On the server side make sure you have a Class that matches the exact structure.
Example
String paramString = "{\"OrgID\":\"" + OrgID
+"\",\"UserDepartment\":\"" + UserDepartment
+"\",\"WorkType\":\"" + WorkType+ "\"}";
HttpEntity httpEntity = null;
try {
httpEntity = new StringEntity(paramString);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("Content-Type", "application/json");
httpPost.setEntity(entity);

EDIT
So sorry, my json must be
{ "OrgID":"1",
"UserDepartment":"1",
"WorkType":"1977",
"WorkDefinition":"EXAMPLE_EXAMPLE",
"Confirmed":[
{"Confirmed":"qaAgo/+/j/XhECIhlAo2SQ==,}
{"Confirmed":"qaAgo/+/j/XhECIhlAo2SQ=="}],
"FileName":"",
"FileMimeType":"",
"FileContent":""
}

Junit testing with Apache HttpClient

I am writing a Junit test with apache httpclient. The testCreate method successfully insert a record to the database but the status return is 500 which make the test case to fail.
Below is the test case,
public void testCreate() throws Exception {
String url = "http://localhost:8080/mediaactivity/videoAssignment";
HttpPost request = new HttpPost(url);
request.addHeader("Content-Type", "application/json");
request.addHeader("xAuthorization", "123");
request.addHeader("correlationId", "123");
String json = "{"+
"\"VideoType\": \"Sample\","+
"\"groupType\": \"INDIVIDUAL\","+
"\"submissionMethod\": \"test\","+
"\"title\": \"test me\""+
"}";
StringEntity entity = new StringEntity(json);
request.setEntity(entity);
// When
HttpResponse httpResponse = HttpClientBuilder.create().build().execute(request);
// Then
assertThat(httpResponse.getStatusLine().getStatusCode(), equalTo(HttpStatus.SC_CREATED));
}
The controller looks like,
#RequestMapping(value = "/videoAssignment", produces = APPLICATION_JSON_VALUE, consumes = APPLICATION_JSON_VALUE, method = RequestMethod.POST)
#ResponseBody
public HttpEntity<VideoAssignment> createVideoAssingnment(
//#ApiParam are there..){
//other methods
return new ResponseEntity<>(va, HttpStatus.CREATED);
}
what i am missing here?

Using HttpResponseInterceptor to manipulate responses

With Apache HttpClient, it's possible to manipulate the retrieved content by adding a HttpResponseIntercepter. With this it is quite easy to add header attributes. But how to manipulate the content of the retrieved HttpEntitys?
As example I like to convert all Text to Uppercase.
#Test
public void shoudConvertEverythingToUpperCase() throws ClientProtocolException, IOException
{
final DefaultHttpClient defaultHttpClient = new DefaultHttpClient();
defaultHttpClient.addResponseInterceptor(new HttpResponseInterceptor() {
#Override
public void process(final HttpResponse response, final HttpContext context) throws HttpException, IOException
{
final HttpEntity entity = response.getEntity();
final HttpEntity upperCaseEntity = makeAllUppercase(entity);
response.setEntity(upperCaseEntity);
}
private HttpEntity makeAllUppercase(final HttpEntity entity)
{
// how to uppercase everything and return the cloned HttpEntity
return null;
}
});
final HttpResponse httpResponse = defaultHttpClient.execute(new HttpGet("http://stackoverflow.com"));
assertTrue(StringUtils.isAllUpperCase(EntityUtils.toString(httpResponse.getEntity())));
}

private HttpEntity makeAllUppercase(final HttpEntity entity)
{
Header h = entity.getContentType();
ContentType contentType = h != null ? ContentType.parse(h.getValue()) : ContentType.DEFAULT_TEXT;
String content = EntityUtils.toString(entity, contentType.getCharset());
return new StringEntity(content.toUpperCase(Locale.US), contentType);
}
This is not the most efficient due to intermediate buffering of content in memory but the most concise implementation.