I need to send a Multipart file data to REST service from vaadin . How can I achieve it ? .. ( web service API is listed below)
#RequestMapping(value="/upload", method=RequestMethod.POST)
public #ResponseBody String[] handleFileUpload(
#RequestParam( value="file" , required=false) MultipartFile file , #RequestParam( value="title" , required=false)String title ,#RequestParam( value="description" , required=false)String description ){
// file uploading logic....
}
When working with external HTTP based services in Java / VAADIN I'm ussualy using very nice JODD Java library specificaly http://jodd.org/doc/http.html
To post attachment to URL as explained in question, simply use something like this:
HttpRequest httpRequest = HttpRequest
.post("http://server:8080/upload")
.form(
"file", new File("c:\\a.jpg.zip")
);
HttpResponse httpResponse = httpRequest.send();
HttpRequest is object from JODD library. You can include JODD into maven config e.g. http://jodd.org/download/
Related
How I can Start an UiPath Process on UiPath Robot from the Salesforce interface?
I know that Salesforce can send REST API commands to other software.
I tried to do exactly the same thing, like you in your movie on YouTube.
Please, can you look on my/Your apex code bellow, and maybe help me. Thanks!!
{
//#future(callout=true)
public static void startProcess(String param1,String param2)
{
Http http = new Http();
HttpRequest rm = new HttpRequest();
rm.setEndpoint('https://account.uipath.com/oauth/token');
rm.setMethod('POST');
rm.setHeader('Content-Type', 'application/json');
rm.setHeader('X-UIPATH-TenantName', 'ioDefault');
//rm.setTimeout(60000);
JSONGenerator gen = JSON.createGenerator(true);
gen.writeStartObject();
gen.writeStringField('grant_type','refresh_token');
gen.writeStringField('client_id','8DEv1AMNXczW3y4U15LL3jYf62jK93n5');
gen.writeStringField('refresh_token','2I7ZERqOZHFmzVzyPUE_sdf-l-dGa4086xN8fyrW-xF8-');
gen.writeEndObject();
rm.setBody(gen.getAsString());
HttpResponse rs = http.send(rm);
System.debug(rs.getBody());
Map<String,Object> res = (Map<String,Object>)JSON.deserializeUntyped(rs.getBody());
System.debug(String.valueOf(res.get('access_token')));
HttpRequest rm2 = new HttpRequest();
rm2.setMethod('POST');
rm2.setEndpoint('https://platform.uipath.com/zuhtkqf/ioDefault/odata/Jobs/UiPath.Server.Configuration.OData.StartJobs');
rm2.setHeader('Content-Type', 'application/json');
rm2.setHeader('X-UIPATH-TenantName', 'ioDefault');
rm2.setHeader('Authorization', 'Bearer '+String.valueOf(res.get('access_token')));
//rm2.setTimeout(60000);
JSONGenerator gen2 = JSON.createGenerator(true);
/// start a simple process without parameters
gen2.writeStartObject();
gen2.writeFieldName('startInfo');
gen2.writeStartObject();
gen2.writeStringField('ReleaseKey','6aa09f52-ef47-47aa-ab2e-8e487e7841e5');
gen2.writeStringField('Strategy','All');
gen2.writeEndObject();
gen2.writeEndObject();
/// start a simple process with parameters
/* gen2.writeStartObject();
gen2.writeFieldName('startInfo');
gen2.writeStartObject();
gen2.writeStringField('ReleaseKey','YOUR release KEY for process see the YouTube movie below');
gen2.writeStringField('Strategy','All');
gen2.writeStringField('InputArguments','{\"param1\":\"'+param1+'\",\"param2\":\"'+param2+'\"}');
gen2.writeEndObject();
gen2.writeEndObject();
*/
rm2.setBody(gen2.getAsString());
HttpResponse rs2 = http.send(rm2);
System.debug(rs2.getBody());
}
}
I have an apache camel application that requires sending log files to an endpoint and this requires Basic Authentication. I was able to pass the authMethod, authusername and authPassword to the url as specified in the camel documentation but the challange I'm having is that I keep getting null response from the endpoint after starting the application.
However, the same endpoint returns response code and response body using postman.
Below is my code:
from("{{routes.feeds.working.directory}}?idempotent=true")
.process(new Processor() {
#Override
public void process(Exchange exchange) throws Exception {
MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();
multipartEntityBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
String fileName = exchange.getIn().getHeader(Exchange.FILE_NAME, String.class);
File file = exchange.getIn().getBody(File.class);
multipartEntityBuilder.addPart("file",
new FileBody(file, ContentType.MULTIPART_FORM_DATA, fileName));
exchange.getOut().setBody(multipartEntityBuilder.build());
Message out = exchange.getOut();
int responseCode = out.getHeader(Exchange.HTTP_RESPONSE_CODE, Integer.class);
log.info("response code "+responseCode);
}
})
.setHeader(Exchange.HTTP_QUERY,
constant("authMethod=Basic&authUsername="+username+"&authPassword="+password+""))
.to(TARGET_WITH_AUTH +"/"+uuid+"/files")
.log(LoggingLevel.DEBUG, "response code >>>>"+Exchange.HTTP_RESPONSE_CODE)
.log(LoggingLevel.INFO, "RESPONSE BODY ${body}")
.end();
Kindly help review and advise further
For HTTP basic authentication I use this before sending a request
<setHeader headerName="Authorization">
<constant>Basic cm9vdDpyb290</constant>
</setHeader>
cm9vdDpyb290 - Encoded Base64 root:root(username and password) string
This was fixed by using httpClient to send my requests with Basic Authentication. Apparently, authMethod in apache camel doesn't send the credentials along with the Post Request and that's why I was getting the initial 401 response code.
Thank y'all for your contributions.
I have a CXF JAX-RS service and a GWT MVP4G presenter.
I call the service with the RequestBuilder and set Content-Type header to application/json.
But in the server side REST method do not call .
REST code is :
class PlayerService{
#POST
#Path("addplayer")
#Consumes({MediaType.APPLICATION_JSON})
#Produces({MediaType.APPLICATION_JSON})
String createOrSaveNewPLayerInfo(PlayerType playerType);
}
GWT code:
RequestBuilder rq = new RequestBuilder(RequestBuilder.POST, url)
rq.setHeader("Content-Type", "application/json");
rq.sendRequest(s, new RequestCallback() {
#Override
public void onResponseReceived(Request request, Response response) {
LOGGER.info(">" + response.getStatusCode() + "<");
}
#Override
public void onError(Request request, Throwable exception) {
LOGGER.info(">>" + exception.getMessage() + "<<");
}
});
I assume, that your GWT application is running on the Jetty server and your service on a Tomcat server. In this case you have two different ports: 8080 & 8888. Calling the service on 8080 will be blocked by the Same Origin Policy.
To solve this, you can switch off the policy (look for CORS). Bad idea.
Instead run your GWT application inside a Tomcat. In this case you will not have any problems with the SOP.
To set up a external server with GWT take a look here.
I'm trying to create a HTTP Client to upload a file following this example: http://java.dzone.com/articles/file-upload-apache-httpclient
When I run the application to upload the file on my RESTFul service, I get:
HTTP ERROR 500
Problem accessing /file/upload. Reason:
Server ErrorCaused by:java.lang.NullPointerException
at com.nice.rest.UploadFileService.uploadFile(UploadFileService.java:33)
...
Where line 33 is:
public class UploadFileService {
#POST
#Path("/upload")
#Consumes(MediaType.MULTIPART_FORM_DATA)
public Response uploadFile(
#FormDataParam("file") InputStream uploadedInputStream,
#FormDataParam("file") FormDataContentDisposition fileDetail) {
//line 33: String uploadedFileLocation = "/mnt/folder/"+ fileDetail.getFileName();
System.out.println("uploadedFileLocation : "+uploadedFileLocation);
// save it
writeToFile(uploadedInputStream, uploadedFileLocation);
String output = "200 OK<br />" + uploadedFileLocation;
return Response.status(200).entity(output).build();
}
Surprisingly, when I upload a file using a html form it works fine:
form action="http://X.X.X.X:8080/file/upload" method="post" enctype="multipart/form-data"
What's wrong?
thanks!!
When you build your multi-part entity, make sure that the #FormDataParam annotation value contains the name of the part within the multipart.
It looks like the part you're looking for doesn't exist hence the NullPointerException.
Please post your client code if possible showing how you construct the multi-part entity
I am trying to use the Wink RestClient to do functional testing on a Rest service endpoint. I use mocks for unit testing but I'd like to functionally test it as an endpoint consumer.
I understand some will object to me calling it a REST endpoint while using form-based auth but that is the current architecture I have.
The majority of the resources I want to test are protected resources and the application (running on Tomcat6) is protected by form authentication. (as in the below web.xml snippet).
What I've tried so far is to make an initial call to an unprotected resource, to obtain the set-cookie header, that contains JSESSIONID, and use that JSESSIONID in the header ( via Resource.cookie() ) in subsequent requests but that does not yield fruit.
web.xml
<login-config>
<auth-method>FORM</auth-method>
<form-login-config>
<form-login-page>/login.html</form-login-page>
<form-error-page>/login.html?failure=true</form-error-page>
</form-login-config>
</login-config>
My Wink RestClient code looks like below. All responses are 200, but two things I notice are that the response from the call to /j_security_check/ does not include the jsessionid cookie, and the call to the protected resource said I had a signin failure. The payload for the call to j_security_check was captured directly from a previous successful browser request intercepted.
ClientConfig config = new ClientConfig();
config.setBypassHostnameVerification(true);
RestClient restClient = new RestClient(config);
Resource unprotectedResource = restClient.resource( BASE_URL + "/");
unprotectedResource.header( "Accept", "*/*" );
ClientResponse clientResponse = unprotectedResource.get();
String response = clientResponse.getEntity(String.class);
// get jSession ID
String jSessionId = clientResponse.getHeaders().get("set-cookie").get(0);
jSessionId = jSessionId.split(";")[0];
System.out.println(jSessionId);
// create a request to login via j_security_check
Resource loginResource = restClient.resource(BASE_URL + "/j_security_check/");
loginResource.accept("text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
loginResource.header("referer", "http://localhost:8080/contextroot/");
loginResource.cookie( jSessionId );
loginResource.header("Connection", "keep-alive");
loginResource.header("Content-Type", "application/x-www-form-urlencoded");
loginResource.header("Content-Length", "41");
ClientResponse loginResponse = loginResource.post("j_username=*****&j_password=*************");
/* the loginResponse, as this point, does not have the jsessionid cookie, my browser client does */
Resource protectedResource = restClient.resource(BASE_URL + "/protected/test/");
systemResource.accept("application/json");
systemResource.cookie( jSessionId );
ClientResponse systemResponse = systemResource.get();
response = clientResponse.getEntity(String.class);
System.out.println(response);
Any thoughts or experience with using the Wink RestClient to exercise form-auth-protected resources would be greatly appreciated. I suppose I'd entertain other frameworks, I have heard of REST-Assured and others, but since the application uses Wink and the RestClient seems to provide me with what I need, I figured I'd stick with it.
Found the problem, and the solution
j_security_check was responding to my POST request (to authenticate), with a #302/redirect. That was being followed by the wink RestClient, but my JSESSIONID cookie was not being appended to it. That was causing the response (from the redirected URL) to contain a set-cookie header, with a new header. My subsequent calls, into which I inserted the JSESSIONID from the first call, failed, because that cookie was expired. All I needed to do was instruct the RestClient to NOT follow redirects. If the redirect were necessary, I would construct it on my own, containing the appropriate cookie.
Chromium and Firefox carry the cookie from the original request to the redirected request so it's all good.
Here is some code that worked for me, using JUnit4, RestClient from the Apache Wink project (and a Jackson ObjectMapper)
#Test
public void testGenerateZipEntryName() throws JsonGenerationException, JsonMappingException, IOException
{
final ObjectMapper mapper = new ObjectMapper();
final String BASE_URL = "http://localhost:8080/rest";
// Configure the Rest client
ClientConfig config = new ClientConfig();
config.proxyHost("localhost"); // helpful when sniffing traffic
config.proxyPort(50080); // helpful when sniffing traffic
config.followRedirects(false); // This is KEY for form auth
RestClient restClient = new RestClient(config);
// Get an unprotected resource -- to get a JSESSIONID
Resource resource = restClient.resource( BASE_URL + "/");
resource.header( "Accept", "*/*" );
ClientResponse response = resource.get();
// extract the jSession ID, in a brittle and ugly way
String jSessId = response.getHeaders().get("set-cookie").get(0).split(";")[0].split("=")[1];
// Get the login resource *j_security_check*
resource = restClient.resource(BASE_URL + "/j_security_check");
resource.cookie("j_username_tmp=admin; j_password_tmp=; JSESSIONID=" + jSessId);
resource.header("Content-Type", "application/x-www-form-urlencoded");
resource.header("Content-Length", "41");
// Verify that login resource redirects us
response = resource.post("j_username=admin&j_password=***********");
assertTrue( response.getStatusCode() == 302 );
// Grab a public resource
resource = restClient.resource(BASE_URL + "/");
resource.cookie("j_username_tmp=admin; j_password_tmp=; JSESSIONID=" + jSessId);
response = resource.get();
// verify status of response
assertTrue( response.getStatusCode() == 200 );
// Grab a protected resource
resource = restClient.resource(BASE_URL + "/rest/system");
resource.cookie("j_username_tmp=admin; j_password_tmp=; JSESSIONID=" + jSessId);
// Verify resource returned OK
response = resource.contentType("application/json").accept("*/*").get();
assertTrue( response.getStatusCode() == 200 );
// Deserialize body of protected response into domain object for further testing
MyObj myObj = mapper.readValue(response.getEntity(String.class), MyObj.class );
assertTrue( myObj.customerArchived() == false );
}