10:01 a.m.
Márton Steierlein [https://community.jboss.org/people/stmarci] created the discussion
"Starting process instance using the jBPM REST API and setting parameters"
To view the discussion, visit: https://community.jboss.org/message/723219#723219
--------------------------------------------------------------
Greetings!
I would like to start a new process instance using jBPM REST interface. I have managed to
figure out that the following URL needs to be called in order to start a new process
instance:
http://localhost:8080/gwt-console-server/rs/process/definition/
http://localhost:8080/gwt-console-server/rs/process/definition/<proces...
(POST)
The problem is that this process has 3 variables and has a form to it which is rendered
when starting the process instance. What I need to accomplish is to use the above REST
interface and set the parameters without this form using only the rest interface.
Is it possible to set the parameters this way? If yes, how?
Thank you for your time!
Márton
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1:59 a.m.
New subject: [jBPM] - Re: Starting process instance using the jBPM REST API and setting parameters
Maciej Swiderski [https://community.jboss.org/people/swiderski.maciej] created the
discussion
"Re: Starting process instance using the jBPM REST API and setting parameters"
To view the discussion, visit: https://community.jboss.org/message/724229#724229
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I believe you can achieve that with different url, that is dedicated to form processing
functionality. Or at least give it a try....
http://localhost:8080/gwt-console-server/rs/form/process/<processId>...
(POST)
it will try to parse request body to retrieve all paramters and set them as process
variables (if they are defined in the process). Unfortunately it will not return process
instance id :( as it is dedicated to process forms.
HTH
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3:25 a.m.
New subject: [jBPM] - Re: Starting process instance using the jBPM REST API and setting parameters
Márton Steierlein [https://community.jboss.org/people/stmarci] created the discussion
"Re: Starting process instance using the jBPM REST API and setting parameters"
To view the discussion, visit: https://community.jboss.org/message/724602#724602
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Thank you very much, I really appreciate your help! I believe the problem is that these
variables are quite big and I guess this poses a limit to the size of the form's
fields (on the server side). However if I cannot figure out how to pass a HashMap to
...../new_instance then this will be my best shot.
Thanks again!
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4:33 p.m.
New subject: [jBPM] - Re: Starting process instance using the jBPM REST API and setting parameters
Jose Miguel Loor [https://community.jboss.org/people/jmiguel77] created the discussion
"Re: Starting process instance using the jBPM REST API and setting parameters"
To view the discussion, visit: https://community.jboss.org/message/798679#798679
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Hi
According to this post
https://community.jboss.org/message/612597#612597
https://community.jboss.org/message/612597#612597
it is possible to add a method that accepts parameters in the REST API to initiate a
process with variables
The post is quite old, so i would believe it is already present in the API
But i am using BRMS 5.3 and with this code:
AbstractHttpClient client = new DefaultHttpClient();
HttpPost request = new HttpPost(url);
if (parameters != null && !parameters.isEmpty()) {
request.setEntity(new
UrlEncodedFormEntity(parameters,"UTF-8"));
}
AuthScope as = new AuthScope(SERVER, 8080);
UsernamePasswordCredentials upc = new
UsernamePasswordCredentials(
USER, PASSWORD);
client.getCredentialsProvider().setCredentials(as, upc);
BasicHttpContext localContext = new
BasicHttpContext();
BasicScheme basicAuth = new BasicScheme();
localContext.setAttribute("preemptive-auth", basicAuth);
return client.execute(request, localContext);
the process is started, but without any variables
any ideas ??
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12:13 a.m.
New subject: [jBPM] - Re: Starting process instance using the jBPM REST API and setting parameters
snowstorm tech [https://community.jboss.org/people/snowstormuser] created the discussion
"Re: Starting process instance using the jBPM REST API and setting parameters"
To view the discussion, visit: https://community.jboss.org/message/799005#799005
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Hi https://community.jboss.org/people/jmiguel77 Jose Miguel Loor,
Use the following programme may be help you,
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.*;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.ContentBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author Shahid
*/
public class StartProcessWV {
private static final String authentication_url = "
http://localhost:8080/gwt-console-server/rs/identity/secure/j_security_check
http://localhost:8080/gwt-console-server/rs/identity/secure/j_security_ch...;
//private static final String process_start_url = "
http://localhost:8080/gwt-console-server/rs/process/definition/defaultPac...
http://localhost:8080/gwt-console-server/rs/process/definition/defaultPac...;
private static final String process_start_url = "
http://localhost:8080/gwt-console-server/rs/form/process/defaultPackage.P...
http://localhost:8080/gwt-console-server/rs/form/process/defaultPackage.P...;
private static final String render_form_url = "
http://localhost:8080/gwt-console-server/rs/form/process/defaultPackage.P...
http://localhost:8080/gwt-console-server/rs/form/process/defaultPackage.P...;
public static String KEY_USERNAME = "j_username";
public static String KEY_PASSWORD = "j_password";
private DefaultHttpClient httpClient = new DefaultHttpClient(); // keep this out of the
method in order to reuse the object for calling other services without losing session
public String authenticate(String address, String username, String password) {
String responseString = "";
// new NameValuePair("j_username", username)
List<NameValuePair> formparams = new ArrayList<NameValuePair>();
formparams.add(new BasicNameValuePair(KEY_USERNAME, username));
formparams.add(new BasicNameValuePair(KEY_PASSWORD, password));
HttpPost httpPost = new HttpPost( address );
// HttpPost httpPost = new HttpPost(" http:// http://" + address +
"/gwt-console-server/rs/process/j_security_check");
InputStreamReader inputStreamReader = null;
BufferedReader bufferedReader = null;
try {
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams,
"UTF-8");
//UrlEncodedFormEntity entity=new UrlEncodedFormEntity(formparams,
"multipart/form-data");
httpPost.setEntity(entity);
HttpResponse response = httpClient.execute(httpPost);
InputStream inputStream = response.getEntity().getContent();
inputStreamReader = new InputStreamReader(inputStream);
bufferedReader = new BufferedReader(inputStreamReader);
StringBuilder stringBuilder = new StringBuilder();
String line = bufferedReader.readLine();
// System.out.println("line==>"+line);
while (line != null) {
stringBuilder.append(line);
line = bufferedReader.readLine();
}
responseString = stringBuilder.toString();
} catch (Exception e) {
//throw new RuntimeException(e);
System.out.println("e = " + e);
} finally {
if (inputStreamReader != null) {
try {
inputStreamReader.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
return responseString;
}
public String requestPostService(String url, Map<String, Object> parameters,
boolean multipart) {
String responseString = "";
MultipartEntity multiPartEntity = new
MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
List<BasicNameValuePair> formparams = new
ArrayList<BasicNameValuePair>();
if (parameters == null) {
parameters = new HashMap<String, Object>();
}
Set<String> keys = parameters.keySet();
for (Iterator<String> keysIterator = keys.iterator();
keysIterator.hasNext();) {
String keyString = keysIterator.next();
String value = parameters.get(keyString).toString();
formparams.add(new BasicNameValuePair(keyString, value));
if (multipart) {
try {
StringBody stringBody = new StringBody(value,
Charset.forName("UTF-8"));
//System.out.println(stringBody.);
multiPartEntity.addPart(keyString, (ContentBody) stringBody);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
HttpPost httpPost = new HttpPost(url);
InputStreamReader inputStreamReader = null;
BufferedReader bufferedReader = null;
try {
if (multipart) {
httpPost.setEntity(multiPartEntity);
} else {
UrlEncodedFormEntity entity =new UrlEncodedFormEntity(formparams,
"UTF-8");// new UrlEncodedFormEntity(formparams,
"multipart/form-data");
////
httpPost.setEntity(entity);
}
HttpResponse response = httpClient.execute(httpPost);
InputStream inputStream = response.getEntity().getContent();
inputStreamReader = new InputStreamReader(inputStream);
bufferedReader = new BufferedReader(inputStreamReader);
StringBuilder stringBuilder = new StringBuilder();
String line = bufferedReader.readLine();
while (line != null) {
stringBuilder.append(line);
line = bufferedReader.readLine();
}
responseString = stringBuilder.toString();
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
if (inputStreamReader != null) {
try {
inputStreamReader.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
return responseString;
}
public String requestGetService(String url, Map<String, Object> parameters, boolean
multipart) {
String responseString = "";
HttpGet httpGet = new HttpGet(url);
InputStreamReader inputStreamReader = null;
BufferedReader bufferedReader = null;
try {
HttpResponse response = httpClient.execute(httpGet);
InputStream inputStream = response.getEntity().getContent();
inputStreamReader = new InputStreamReader(inputStream);
bufferedReader = new BufferedReader(inputStreamReader);
StringBuilder stringBuilder = new StringBuilder();
String line = bufferedReader.readLine();
// System.out.println("line = " + line);
while (line != null) {
stringBuilder.append(line);
line = bufferedReader.readLine();
}
responseString = stringBuilder.toString();
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
if (inputStreamReader != null) {
try {
inputStreamReader.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
return responseString;
}
public static void main(String args[])
{
StartProcessWV startProcessWV=new StartProcessWV();
Map map=new HashMap();
map.put("name", "Shahid Iqbal");
// map.put("age", "29");
System.out.println("Login Form==>
"+startProcessWV.requestGetService(render_form_url, null, true));
System.out.println(startProcessWV.authenticate(authentication_url, "admin",
"admin")+"\n");
System.out.println("Render Form==>
"+startProcessWV.requestGetService(render_form_url, null, true)+"\n");
System.out.println("Process start Output==>
"+startProcessWV.requestPostService(process_start_url, map, true));
}
}
please change the process id and your process should have the process form.
I hope so it will helpfull for you.
Sorry for my english
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4326
days inactive
4673
days old
4 comments
4 participants
participants (4)
-
Jose Miguel Loor -
Maciej Swiderski
-
Márton Steierlein
-
snowstorm tech