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solved NPE on PDF without

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This commit is contained in:
Dominik Vogt
2019-09-13 15:19:51 +02:00
parent 3d8c1ad624
commit 04ebdbd7f2
2 changed files with 696 additions and 665 deletions
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121
src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java
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@@ -1,30 +1,38 @@
/** **********************************************************************
*
* Copyright 2018 Jochen Staerk
*
* Use is subject to license terms.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at http://www.apache.org/licenses/LICENSE-2.0.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
* See the License for the specific language governing permissions and
* limitations under the License.
*
*********************************************************************** */
/**
* ********************************************************************** Copyright 2018 Jochen Staerk Use is subject to license terms. Licensed under the
* Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0. Unless required by applicable law or agreed to in writing, software distributed under the License is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions
* and limitations under the License.
*/
package org.mustangproject.ZUGFeRD;
/**
* Mustangproject's ZUGFeRD implementation
* ZUGFeRD importer
* Licensed under the APLv2
* Mustangproject's ZUGFeRD implementation ZUGFeRD importer Licensed under the APLv2
*
* @date 2014-07-07
* @version 1.1.0
* @author jstaerk
* */
*/
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDDocumentNameDictionary;
@@ -35,20 +43,6 @@ import org.apache.pdfbox.pdmodel.common.filespecification.PDEmbeddedFile;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
public class ZUGFeRDImporter {
/**
@@ -72,6 +66,7 @@ public class ZUGFeRDImporter {
*/
private Document document;
public ZUGFeRDImporter(String pdfFilename) {
try (InputStream bis = Files.newInputStream(Paths.get(pdfFilename), StandardOpenOption.READ)) {
extractLowLevel(bis);
@@ -81,6 +76,7 @@ public class ZUGFeRDImporter {
}
}
public ZUGFeRDImporter(InputStream pdfStream) {
try {
extractLowLevel(pdfStream);
@@ -90,9 +86,9 @@ public class ZUGFeRDImporter {
}
}
/**
* Extracts a ZUGFeRD invoice from a PDF document represented by an input
* stream. Errors are reported via exception handling.
* Extracts a ZUGFeRD invoice from a PDF document represented by an input stream. Errors are reported via exception handling.
*
* @param pdfStream a inputstream of a pdf file
*/
@@ -101,8 +97,13 @@ public class ZUGFeRDImporter {
// PDDocumentInformation info = doc.getDocumentInformation();
PDDocumentNameDictionary names = new PDDocumentNameDictionary(doc.getDocumentCatalog());
//start
InputStream XMP = doc.getDocumentCatalog().getMetadata().exportXMPMetadata();
if (doc.getDocumentCatalog() == null || doc.getDocumentCatalog().getMetadata() == null) {
Logger.getLogger(ZUGFeRDImporter.class.getName()).log(Level.INFO, "no-xmlpart");
return;
}
InputStream XMP = doc.getDocumentCatalog().getMetadata().exportXMPMetadata();
xmpString = convertStreamToString(XMP);
PDEmbeddedFilesNameTreeNode etn = names.getEmbeddedFiles();
@@ -159,7 +160,11 @@ public class ZUGFeRDImporter {
}
}
private Document getDocument() { return document; }
private Document getDocument() {
return document;
}
private void setDocument() throws ParserConfigurationException, IOException, SAXException {
DocumentBuilderFactory xmlFact = DocumentBuilderFactory.newInstance();
@@ -170,6 +175,7 @@ public class ZUGFeRDImporter {
document = builder.parse(is);
}
public void setRawXML(byte[] rawXML) throws IOException {
this.rawXML = rawXML;
try {
@@ -180,8 +186,10 @@ public class ZUGFeRDImporter {
}
}
/**
* Skips over a BOM at the beginning of the given ByteArrayInputStream, if one exists.
*
* @param is the ByteArrayInputStream used
* @throws IOException if can not be read from is
* @see <a href="https://www.w3.org/TR/xml/#sec-guessing">Autodetection of Character Encodings</a>
@@ -207,6 +215,7 @@ public class ZUGFeRDImporter {
return 0;
}
private String extractString(String xpathStr) {
if (!containsMeta) {
throw new ZUGFeRDExportException("No suitable data/ZUGFeRD file could be found.");
@@ -224,16 +233,19 @@ public class ZUGFeRDImporter {
return result;
}
/**
* @return the reference (purpose) the sender specified for this invoice
*/
public String getForeignReference() {
String result = extractString("//ApplicableHeaderTradeSettlement/PaymentReference");
if(result == null || result.isEmpty())
if (result == null || result.isEmpty()) {
result = extractString("//ApplicableSupplyChainTradeSettlement/PaymentReference");
}
return result;
}
/**
* @return the document code
*/
@@ -241,6 +253,7 @@ public class ZUGFeRDImporter {
return extractString("//HeaderExchangedDocument/TypeCode");
}
/**
* @return the referred document
*/
@@ -248,6 +261,7 @@ public class ZUGFeRDImporter {
return extractString("//ApplicableHeaderTradeAgreement/BuyerReference");
}
/**
* @return the sender's bank's BLZ code
* @deprecated use BIC and IBAN instead of BLZ and KTO
@@ -257,6 +271,7 @@ public class ZUGFeRDImporter {
return extractString("//PayeeSpecifiedCreditorFinancialInstitution/GermanBankleitzahlID");
}
/**
* @return the sender's account number
* @deprecated use BIC and IBAN instead of BLZ and KTO
@@ -266,6 +281,7 @@ public class ZUGFeRDImporter {
return extractString("//PayeePartyCreditorFinancialAccount/ProprietaryID");
}
/**
* @return the sender's bank's BIC code
*/
@@ -281,6 +297,7 @@ public class ZUGFeRDImporter {
return extractString("//PayeeSpecifiedCreditorFinancialInstitution/Name");
}
/**
* @return the sender's account IBAN code
*/
@@ -288,20 +305,24 @@ public class ZUGFeRDImporter {
return extractString("//PayeePartyCreditorFinancialAccount/IBANID");
}
public String getHolder() {
return extractString("//SellerTradeParty/Name");
}
/**
* @return the total payable amount
*/
public String getAmount() {
String result = extractString("//SpecifiedTradeSettlementHeaderMonetarySummation/DuePayableAmount");
if(result == null || result.isEmpty())
if (result == null || result.isEmpty()) {
result = extractString("//SpecifiedTradeSettlementMonetarySummation/GrandTotalAmount");
}
return result;
}
/**
* @return when the payment is due
*/
@@ -309,10 +330,12 @@ public class ZUGFeRDImporter {
return extractString("//SpecifiedTradePaymentTerms/DueDateDateTime/DateTimeString");
}
public HashMap<String, byte[]> getAdditionalData() {
return additionalXMLs;
}
/**
* get xmp metadata of the PDF, null if not available
*
@@ -330,6 +353,7 @@ public class ZUGFeRDImporter {
return containsMeta;
}
/**
* @param meta raw XML to be set
* @throws IOException if raw can not be set
@@ -338,6 +362,7 @@ public class ZUGFeRDImporter {
setRawXML(meta.getBytes());
}
/**
* @return raw XML of the invoice
*/
@@ -351,7 +376,9 @@ public class ZUGFeRDImporter {
public int getVersion() throws Exception {
if (!containsMeta) throw new Exception("Not yet parsed");
if (!containsMeta) {
throw new Exception("Not yet parsed");
}
if (getUTF8().contains("<rsm:CrossIndustryDocument")) {
return 1;
} else if (getUTF8().contains("<rsm:CrossIndustryInvoice")) {
@@ -360,6 +387,7 @@ public class ZUGFeRDImporter {
throw new Exception("ZUGFeRD version could not be determined");
}
/**
* @return return UTF8 XML (without BOM) of the invoice
*/
@@ -388,17 +416,19 @@ public class ZUGFeRDImporter {
return new String(bomlessData);
}
/**
* Returns the raw XML data as extracted from the ZUGFeRD PDF file.
*
* @return the raw ZUGFeRD XML data
*/
public byte[] getRawXML() {
return rawXML;
}
/**
* will return true if the metadata (just extract-ed or set with setMeta)
* contains ZUGFeRD XML
* will return true if the metadata (just extract-ed or set with setMeta) contains ZUGFeRD XML
*
* @return true if the invoice contains ZUGFeRD XML
*/
@@ -411,6 +441,7 @@ public class ZUGFeRDImporter {
/* ZF1 */ || meta.contains("ExchangedDocumentContext") /* ZF2 */));
}
static String convertStreamToString(java.io.InputStream is) {
// source https://stackoverflow.com/questions/309424/how-do-i-read-convert-an-inputstream-into-a-string-in-java referring to
// https://community.oracle.com/blogs/pat/2004/10/23/stupid-scanner-tricks