Examples of com.lowagie.text.pdf.PdfStamper

com.lowagie.text.pdf.PdfStamper
Applies extra content to the pages of a PDF document. This extra content can be all the objects allowed in PdfContentByte including pages from other Pdfs. The original PDF will keep all the interactive elements including bookmarks, links and form fields.
It is also possible to change the field values and to flatten them. New fields can be added but not flattened. @author Paulo Soares (psoares@consiste.pt)

        System.out.println("Filling in a form");
        try {
            // we create a reader for a certain document
            PdfReader reader = new PdfReader("SimpleRegistrationForm.pdf");
            // filling in the form
            PdfStamper stamp1 = new PdfStamper(reader, new FileOutputStream("registered.pdf"));
            AcroFields form1 = stamp1.getAcroFields();
            form1.setField("name", "Bruno Lowagie");
            form1.setField("address", "Baeyensstraat 121, Sint-Amandsberg");
            form1.setField("postal_code", "BE-9040");
            form1.setField("email", "bruno@lowagie.com");
            stamp1.close();
            // filling in the form and flatten
            reader = new PdfReader("SimpleRegistrationForm.pdf");
            PdfStamper stamp2 = new PdfStamper(reader, new FileOutputStream("registered_flat.pdf"));
            AcroFields form2 = stamp2.getAcroFields();
            form2.setField("name", "Bruno Lowagie");
            form2.setField("address", "Baeyensstraat 121, Sint-Amandsberg");
            form2.setField("postal_code", "BE-9040");
            form2.setField("email", "bruno@lowagie.com");
            stamp2.setFormFlattening(true);
            stamp2.close();
        }
        catch (Exception de) {
            de.printStackTrace();
        }
    }

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            Certificate[] chain =  ks.getCertificateChain(store.getKeyAlias()); 


            PdfReader reader = new PdfReader(originalBytes); 
            ByteArrayOutputStream os = new ByteArrayOutputStream();                 


            PdfStamper stamper = PdfStamper.createSignature(reader, os, '\0'); 
            PdfSignatureAppearance appearance = stamper.getSignatureAppearance(); 
            appearance.setCrypto(key, chain, null, 
                                 PdfSignatureAppearance.SELF_SIGNED); 
            
            appearance.setReason(reason); 
            appearance.setLocation(location); 
            
            appearance.setVisibleSignature(field); 
            stamper.close();      
            
            return os.toByteArray();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

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         reader = new PdfReader(new URL(getURL()));
      }
      buffer = new ByteArrayOutputStream();
      try
      {
         stamper = new PdfStamper(reader, buffer);
         Contexts.getEventContext().set(STAMPER_KEY, stamper);
      }
      catch (DocumentException e)
      {
         throw new FacesException("Could not create PDF stamper", e);

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         Certificate[] chain = ks.getCertificateChain(store.getKeyAlias());


         PdfReader reader = new PdfReader(originalBytes);
         ByteArrayOutputStream os = new ByteArrayOutputStream();


         PdfStamper stamper = PdfStamper.createSignature(reader, os, '\0');
         PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
         appearance.setCrypto(key, chain, null, PdfSignatureAppearance.SELF_SIGNED);


         appearance.setReason(reason);
         appearance.setLocation(location);


         appearance.setVisibleSignature(field);
         stamper.close();


         return os.toByteArray();
      } catch (Exception e) {
         throw new RuntimeException(e);
      } finally {

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         }
         else
         {
            if (readOnly.booleanValue())
            {
               PdfStamper stamper = (PdfStamper) Contexts.getEventContext().get(STAMPER_KEY);
               stamper.partialFormFlattening(theName);
            }
         }
      }
      catch (DocumentException e)
      {

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         }
         else
         {
            if (readOnly.booleanValue())
            {
               PdfStamper stamper = (PdfStamper) Contexts.getEventContext().get(STAMPER_KEY);
               stamper.partialFormFlattening(theName);
            }
         }
      }
      catch (DocumentException e)
      {

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            reader = new PdfReader(new URL(getURL()));
        }
        log.debug("Loading template #0", getURL());
        buffer = new ByteArrayOutputStream();
        try {
            stamper = new PdfStamper(reader, buffer);
            Contexts.getEventContext().set(STAMPER_KEY, stamper);
        } catch (DocumentException e) {
            throw new FacesException("Could not create PDF stamper", e);
        }
        fields = stamper.getAcroFields();

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        try {
            String surveyName = (String) context.get("surveyName");
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            ByteWrapper byteWrapper = getInputByteWrapper(context, delegator);
            PdfReader pdfReader = new PdfReader(byteWrapper.getBytes());
            PdfStamper pdfStamper = new PdfStamper(pdfReader, os);
            AcroFields acroFields = pdfStamper.getAcroFields();
            HashMap acroFieldMap = acroFields.getFields();
            
            String contentId = (String) context.get("contentId");
            GenericValue survey = null;
            surveyId = (String) context.get("surveyId");
            if (UtilValidate.isEmpty(surveyId)) {
                surveyId = delegator.getNextSeqId("Survey");
                survey = delegator.makeValue("Survey", UtilMisc.toMap("surveyName", surveyName));
                survey.set("surveyId", surveyId);
                survey.set("allowMultiple", "Y");
                survey.set("allowUpdate", "Y");
                survey.create();
            }
            
            // create a SurveyQuestionCategory to put the questions in
            Map createCategoryResultMap = dispatcher.runSync("createSurveyQuestionCategory", 
                    UtilMisc.toMap("description", "From AcroForm in Content [" + contentId + "] for Survey [" + surveyId + "]", "userLogin", userLogin));
            String surveyQuestionCategoryId = (String) createCategoryResultMap.get("surveyQuestionCategoryId");
            
            pdfStamper.setFormFlattening(true);
            Iterator i = acroFieldMap.keySet().iterator();
            while (i.hasNext()) {
                String fieldName = (String) i.next();
                AcroFields.Item item = acroFields.getFieldItem(fieldName);
                int type = acroFields.getFieldType(fieldName);
                String value = acroFields.getField(fieldName);
                Debug.logInfo("fieldName:" + fieldName + "; item: " + item + "; value: " + value, module);


                GenericValue surveyQuestion = delegator.makeValue("SurveyQuestion", UtilMisc.toMap("question", fieldName));
                String surveyQuestionId = delegator.getNextSeqId("SurveyQuestion");
                surveyQuestion.set("surveyQuestionId", surveyQuestionId);
                surveyQuestion.set("surveyQuestionCategoryId", surveyQuestionCategoryId);


                if (type == AcroFields.FIELD_TYPE_TEXT) {
                    surveyQuestion.set("surveyQuestionTypeId", "TEXT_SHORT");
                } else if (type == AcroFields.FIELD_TYPE_RADIOBUTTON) {
                    surveyQuestion.set("surveyQuestionTypeId", "OPTION");
                } else if (type == AcroFields.FIELD_TYPE_LIST || type == AcroFields.FIELD_TYPE_COMBO) {
                    surveyQuestion.set("surveyQuestionTypeId", "OPTION");
                    // TODO: handle these specially with the acroFields.getListOptionDisplay (and getListOptionExport?)
                    String[] listOptionDisplayArray = acroFields.getListOptionDisplay(fieldName);
                    String[] listOptionExportArray = acroFields.getListOptionExport(fieldName);
                    Debug.logInfo("listOptionDisplayArray: " + listOptionDisplayArray + "; listOptionExportArray: " + listOptionExportArray, module);
                } else {
                    surveyQuestion.set("surveyQuestionTypeId", "TEXT_SHORT");
                    Debug.logWarning("Building Survey from PDF, fieldName=[" + fieldName + "]: don't know how to handle field type: " + type + "; defaulting to short text", module);
                }
                
                // ==== create a good sequenceNum based on tab order or if no tab order then the page location
                
                Integer tabPage = (Integer) item.page.get(0);
                Integer tabOrder = (Integer) item.tabOrder.get(0);
                Debug.logInfo("tabPage=" + tabPage + ", tabOrder=" + tabOrder, module);
                
                //array of float  multiple of 5. For each of this groups the values are: [page, llx, lly, urx, ury]
                float[] fieldPositions = acroFields.getFieldPositions(fieldName);
                float fieldPage = fieldPositions[0];
                float fieldLlx = fieldPositions[1];
                float fieldLly = fieldPositions[2];
                float fieldUrx = fieldPositions[3];
                float fieldUry = fieldPositions[4];
                Debug.logInfo("fieldPage=" + fieldPage + ", fieldLlx=" + fieldLlx + ", fieldLly=" + fieldLly + ", fieldUrx=" + fieldUrx + ", fieldUry=" + fieldUry, module);


                Long sequenceNum = null;
                if (tabPage != null && tabOrder != null) {
                    sequenceNum = new Long(tabPage.intValue() * 1000 + tabOrder.intValue());
                    Debug.logInfo("tabPage=" + tabPage + ", tabOrder=" + tabOrder + ", sequenceNum=" + sequenceNum, module);
                } else if (fieldPositions.length > 0) {
                    sequenceNum = new Long((long) fieldPage * 10000 + (long) fieldLly * 1000 + (long) fieldLlx);
                    Debug.logInfo("fieldPage=" + fieldPage + ", fieldLlx=" + fieldLlx + ", fieldLly=" + fieldLly + ", fieldUrx=" + fieldUrx + ", fieldUry=" + fieldUry + ", sequenceNum=" + sequenceNum, module);
                }
                
                // TODO: need to find something better to put into these fields...
                String annotation = null;
                Iterator widgetIter = item.widgets.iterator();
                while (widgetIter.hasNext()) {
                    PdfDictionary dict = (PdfDictionary) widgetIter.next();
                    
                    // if the "/Type" value is "/Annot", then get the value of "/TU" for the annotation
                    
                    /* Interesting... this doesn't work, I guess we have to iterate to find the stuff...
                    PdfObject typeValue = dict.get(new PdfName("/Type"));
                    if (typeValue != null && "/Annot".equals(typeValue.toString())) {
                        PdfObject tuValue = dict.get(new PdfName("/TU"));
                        annotation = tuValue.toString();
                    }
                    */
                    
                    PdfObject typeValue = null;
                    PdfObject tuValue = null;
                    
                    Set dictKeys = dict.getKeys();
                    Iterator dictKeyIter = dictKeys.iterator();
                    while (dictKeyIter.hasNext()) {
                        PdfName dictKeyName = (PdfName) dictKeyIter.next();
                        PdfObject dictObject = dict.get(dictKeyName);
                        
                        if ("/Type".equals(dictKeyName.toString())) {
                            typeValue = dictObject;
                        } else if ("/TU".equals(dictKeyName.toString())) {
                            tuValue = dictObject;
                        }
                        //Debug.logInfo("AcroForm widget fieldName[" + fieldName + "] dictKey[" + dictKeyName.toString() + "] dictValue[" + dictObject.toString() + "]", module);
                    }
                    if (tuValue != null && typeValue != null && "/Annot".equals(typeValue.toString())) {
                        annotation = tuValue.toString();
                    }
                }
                
                surveyQuestion.set("description", fieldName);
                if (UtilValidate.isNotEmpty(annotation)) {
                    surveyQuestion.set("question", annotation);
                } else {
                    surveyQuestion.set("question", fieldName);
                }


                GenericValue surveyQuestionAppl = delegator.makeValue("SurveyQuestionAppl", UtilMisc.toMap("surveyId", surveyId, "surveyQuestionId", surveyQuestionId));
                surveyQuestionAppl.set("fromDate", nowTimestamp);
                surveyQuestionAppl.set("externalFieldRef", fieldName);


                if (sequenceNum != null) {
                    surveyQuestionAppl.set("sequenceNum", sequenceNum);
                }


                surveyQuestion.create();
                surveyQuestionAppl.create();
            }            
            pdfStamper.close();
            if (UtilValidate.isNotEmpty(contentId)) {
                survey = delegator.findByPrimaryKey("Survey", UtilMisc.toMap("surveyId", surveyId));
                survey.set("acroFormContentId", contentId);
                survey.store();
            }

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            }
            
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            ByteWrapper byteWrapper = getInputByteWrapper(context, delegator);
            PdfReader r = new PdfReader(byteWrapper.getBytes());
            PdfStamper s = new PdfStamper(r,os);
            AcroFields fs = s.getAcroFields();
            HashMap hm = fs.getFields();
            
            
            s.setFormFlattening(true);
            Iterator i = hm.keySet().iterator();
            while (i.hasNext()) {
                String fieldName = (String)i.next();
                //AcroFields.Item item = fs.getFieldItem(fieldName);
                //int type = fs.getFieldType(fieldName);
                String value = fs.getField(fieldName);
                
                List questions = delegator.findByAnd("SurveyQuestionAndAppl", UtilMisc.toMap("surveyId", surveyId, "externalFieldRef", fieldName));
                if (questions.size() == 0 ) {
                    Debug.logInfo("No question found for surveyId:" + surveyId + " and externalFieldRef:" + fieldName, module);
                    continue;
                }
                
                GenericValue surveyQuestionAndAppl = (GenericValue)questions.get(0);
                String surveyQuestionId = (String)surveyQuestionAndAppl.get("surveyQuestionId");
                String surveyQuestionTypeId = (String)surveyQuestionAndAppl.get("surveyQuestionTypeId");
                GenericValue surveyResponseAnswer = delegator.makeValue("SurveyResponseAnswer", UtilMisc.toMap("surveyResponseId", surveyResponseId, "surveyQuestionId", surveyQuestionId));
                if (surveyQuestionTypeId ==null || surveyQuestionTypeId.equals("TEXT_SHORT")) {
                    surveyResponseAnswer.set("textResponse", value);
                }


                delegator.create(surveyResponseAnswer);
            }            
            s.close();
        } catch (GenericEntityException e) {
            String errMsg = "Error generating PDF: " + e.toString();
            Debug.logError(e, errMsg, module);
            return ServiceUtil.returnError(errMsg);
        } catch(GeneralException e) {

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        try {
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            GenericDelegator delegator = dctx.getDelegator();
            ByteWrapper byteWrapper = getInputByteWrapper(context, delegator);
            PdfReader r = new PdfReader(byteWrapper.getBytes());
            PdfStamper s = new PdfStamper(r,os);
            AcroFields fs = s.getAcroFields();
            HashMap map = fs.getFields();
            
            s.setFormFlattening(true);
            
            // Debug code to get the values for setting TDP
    //        String[] sa = fs.getAppearanceStates("TDP");
    //        for (int i=0;i<sa.length;i++)
    //            Debug.log("Appearance="+sa[i]);

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