Trouble with calling servlet to upload file.

Q&A
1

This is continuous of my problem in this post:

https://community.bonitasoft.com/questions-and-answers/groovy-script-how-get-temporary-file-upload-widget#comment-13733

Summary:

  • My problem: With Upload widget, I need to verify the file content before accept uploading. Default upload widget only connect to servlet "formUpload" and I cannot access it to add the checking code.
  • My solution: Write a REST API to verify the file content. If correct, call servlet "formUpload" to upload the file and return data normally.

I have writen a REST API to validate the file data, but unable to call servlet "formUpload".

My current code is as below:

RestApiResponse doHandle(HttpServletRequest request, RestApiResponseBuilder apiResponseBuilder, RestAPIContext context) {

    try {
        String server = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort();
        InputStream inputStream = request.getInputStream()
        File file = File.createTempFile("temp", ".tmp");
        
        FileOutputStream outputStream = null
        try
        {
            outputStream = new FileOutputStream(file, false)
            int read;
            byte[] bytes = new byte[DEFAULT_BUFFER_SIZE];
            while ((read = inputStream.read(bytes)) != -1) {
                outputStream.write(bytes, 0, read);
            }
        }
        finally {
            if (outputStream != null) {
                outputStream.close();
            }
        }
        
        if(file != null){
            // do checking

            // if correct call formUpload as below  
            //HTTPBuilder http = new HTTPBuilder(server) 
            //def bonitaToken = login(http) 
            //def temporaryFileOnServer = uploadFile(http, inputStream, data, "temp.tmp") 
        }
        else{
            LOGGER.info("file is null")
        }

        //===========================
        // 正常終了のレスポンスを返す
        //===========================
        apiResponseBuilder.withResponseStatus(HttpServletResponse.SC_OK)    //200
        def json = new groovy.json.JsonBuilder()
        json {"send" "ok"}
        buildResponse apiResponseBuilder, json.toPrettyString()

      } catch (Exception e) {
        return buildErrorResponse(apiResponseBuilder, e.message)
      }
}

I try to follow the example on GitHub in https://github.com/Bonitasoft-Community/example-upload-sevlet

However, when I try to import the require lib as below, I have error.

import groovyx.net.http.HTTPBuilder
import static groovyx.net.http.Method.POST
import static groovyx.net.http.ContentType.*
import org.apache.http.entity.mime.MultipartEntityBuilder
import org.apache.http.entity.ContentType

Error:

28-Apr-2022 17:19:04.279 SEVERE [http-nio-8080-exec-4] org.restlet.resource.ServerResource.doCatch Exception or error caught in server resource
    org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
D:\Gakken\develop\05.Coding\workspace\tomcat\server\temp\bonita_portal_13212@IVS-P0280\tenants\1\pages\custompage_SendMail\AttachFile.groovy: 21: unable to resolve class groovyx.net.http.HTTPBuilder
 @ line 21, column 1.
   import groovyx.net.http.HTTPBuilder
   ^

D:\Gakken\develop\05.Coding\workspace\tomcat\server\temp\bonita_portal_13212@IVS-P0280\tenants\1\pages\custompage_SendMail\AttachFile.groovy: 23: unable to resolve class groovyx.net.http.ContentType
 @ line 23, column 1.
   import static groovyx.net.http.ContentType.*
   ^

D:\Gakken\develop\05.Coding\workspace\tomcat\server\temp\bonita_portal_13212@IVS-P0280\tenants\1\pages\custompage_SendMail\AttachFile.groovy: 22: unable to resolve class groovyx.net.http.Method
 @ line 22, column 1.
   import static groovyx.net.http.Method.POST
   ^

D:\Gakken\develop\05.Coding\workspace\tomcat\server\temp\bonita_portal_13212@IVS-P0280\tenants\1\pages\custompage_SendMail\AttachFile.groovy: 23: unable to resolve class groovyx.net.http.ContentType
 @ line 23, column 1.
   import static groovyx.net.http.ContentType.*
   ^

Is there any step that I need to do before import these classes?

 

2

Hi ndhv1983_2529106,

It seems that "groovyx" dependency lib is not added in the pom of your extension.

Example from github you quote is a little bit old and doesn't include required update since java8 removal

3

Thanks for the reply.

Is there any where I can get this "groovyx" jar file?

And do you know any newer sample for calling Bonita's upload servlet?