Question

我正在使用PeopleSoft系统调用的Java类对包含特殊字符（非ASCII字符，如ã，á，à，ç等）的XML文档进行签名。为避免出现任何问题，我删除了这些字符，但实际上我需要使用它们打印此签名文档。有什么办法吗？这是要签名的XML文档的示例（已准备好进行签名）：

<PedidoEnvioLoteRPS xmlns="http://www.prefeitura.sp.gov.br/nfe" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <Cabecalho Versao="1" xmlns="">
    <CPFCNPJRemetente>
      <CNPJ>99999999999999</CNPJ>
    </CPFCNPJRemetente>
    <transacao>false</transacao>
    <dtInicio>2018-10-02</dtInicio>
    <dtFim>2018-10-02</dtFim>
    <QtdRPS>1</QtdRPS>
    <ValorTotalServicos>40</ValorTotalServicos>
    <ValorTotalDeducoes>0</ValorTotalDeducoes>
  </Cabecalho>
  <RPS xmlns="">
    <Assinatura>FavH23VVIbPWzlvJ28OZZ26Lv2aEgWfmsdhPN1qQN19UCxv6xzu8fHC50wnji3i3G49DuYoXy354U2IxzooPtZYWv7KFUwWLWC4xJYpNKNLOg3txx4znxDNbdC9l/ot9liIMKHf/8rJdciGMpwUOMxt3z95sFVJDcvx/3si1yQG0TaQsWLLLKHH4rUwfE+OWYBIwp/CWBf1/IRzYsFb/q2UgpvfvU1RaXIgI+aNqwYyKulhfUZItI4nYJTsGcXG0y+iXxW3oRWiCGJ5leOysHyJ4VLJcg/vehwT8f8ZQLhvClKeDQUQpL9ts+9oX4PHdc8WXDgN5ekUmvCHS/GW0ew==</Assinatura>
    <ChaveRPS>
      <InscricaoPrestador>99999999</InscricaoPrestador>
      <SerieRPS>1</SerieRPS>
      <NumeroRPS>180</NumeroRPS>
    </ChaveRPS>
    <TipoRPS>RPS</TipoRPS>
    <DataEmissao>2018-10-02</DataEmissao>
    <StatusRPS>N</StatusRPS>
    <TributacaoRPS>T</TributacaoRPS>
    <ValorServicos>40</ValorServicos>
    <ValorDeducoes>0</ValorDeducoes>
    <CodigoServico>3205</CodigoServico>
    <AliquotaServicos>2</AliquotaServicos>
    <ISSRetido>false</ISSRetido>
    <CPFCNPJTomador>
      <CNPJ>88888888888888</CNPJ>
    </CPFCNPJTomador>
    <RazaoSocialTomador>XPTO S.A.</RazaoSocialTomador>
    <EnderecoTomador>
      <Logradouro>Av do Lago</Logradouro>
      <NumeroEndereco>999</NumeroEndereco>
      <ComplementoEndereco>9 andar - cj. 99</ComplementoEndereco>
      <Bairro>Vila Guilherme</Bairro>
      <Cidade>3505708</Cidade>
      <UF>SP</UF>
      <CEP>99999999</CEP>
    </EnderecoTomador>
    <EmailTomador>teste@teste.com.br</EmailTomador>
    <Discriminacao>Tarifa de antecipação de entrega VR Saúde Familiar: R$ 40,00||||||||||||||||IRRF 1,5% Sob Responsabilidade de VR Benefícios Serv  Proc Ltda conforme I.N. 153/87 e |Lei 7450/85, art. 53 - R$ 0,60|Trib aprox. Lei nº 12.741/12: R$5,38 Federal, R$1,68 Municipal e R$32,94 pelos serviços|Fonte:IBPT/empresometro.com.br  A3S28F 18.2.B|Contrato XPTO|Autorização de Regime especial - SEI 6017.2018/0055420-5 (32600,94)|REALIZE O PAGAMENTO APENAS DE BOLETOS EMITIDOS POR VOCÊ NA ÁREA LOGADA E SEGURA DO SEU|PORTAL RH. PREVINA-SE E EVITE PREJUÍZOS FINANCEIROS.</Discriminacao>
    <ValorCargaTributaria>7.06</ValorCargaTributaria>
    <PercentualCargaTributaria>17.64</PercentualCargaTributaria>
    <FonteCargaTributaria>IBPT</FonteCargaTributaria>
  </RPS>

</PedidoEnvioLoteRPS>

我用来签名的java方法是：

public void AssinaXML(String ArqAssinar) {

    try {
        /* Creates the DOM document DOM from the file in ArqAssinar */
        DocumentBuilderFactory DocBuilderFactory = DocumentBuilderFactory.newInstance();
        DocBuilderFactory.setNamespaceAware(true);
        DocumentBuilder DocBuilder = DocBuilderFactory.newDocumentBuilder();
        FileInputStream Input = new FileInputStream(ArqAssinar);
        Document Doc = DocBuilder.parse(Input);

        /* Gets the position of the Signature tag */
        Node Tag = Doc.getDocumentElement();

        if (Tag != null) {
            /* Signs the document */
            DOMSignContext DocSignCont = new DOMSignContext(PrivPass, Tag);
            XMLSignature Signature = XmlSignFac.newXMLSignature(SignInfo, KeyInf);
            Signature.sign(DocSignCont);

            /* Creates the Signature tag with the results */
            OutputStream Saida = new FileOutputStream(ArqAssinar);
            TransformerFactory TransformFac = TransformerFactory.newInstance();
            Transformer Transf = TransformFac.newTransformer();
            Transf.transform(new DOMSource(Doc), new StreamResult(Saida));  
        }
        else {
            System.out.println("Java Assinatura_Digital, método AssinaXML - A tag especificada para inserir a assinatura não foi encontrada");
        }
    }
    catch (Exception E) {
        E.PrintStackTrace();
    }
}

但是当我尝试在上面的XML文档上签名时出现此错误：

com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException：3字节UTF-8序列的无效字节2。在com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.invalidByte（未知来源） com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.read（未知来源）在com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.load（未知来源）在com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.skipChar（未知来源）在com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl $ FragmentContentDriver.next（未知来源）在com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next（未知来源）在com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next（未知来源）在com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument（未知来源）在com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse（未知来源）在com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse（未知来源）在com.sun.org.apache.xerces.internal.parsers.XMLParser.parse（未知来源）在com.sun.org.apache.xerces.internal.parsers.DOMParser.parse（未知来源）在com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse（未知来源）在javax.xml.parsers.DocumentBuilder.parse（未知来源）在GVR_Assinatura_Digital.AssinaXML（GVR_Assinatura_Digital.java:551）在GVR_Assinatura_Digital.main（GVR_Assinatura_Digital.java:778）

有人知道为什么会这样吗？

Answer 1

正如评论者所说，您可以签署任何有效的XML文档。

真正的问题应该是，如何创建一个包含ã等字符的有效XML文档？

答案：

默认情况下，XML文档以UTF-8编码
因此，您可以通过Unicode字符序列的UTF-8编码将任何字符直接添加到XML文档中。以下是有效的XML文档：

UTF-8编码

<test>Ã¥</test>

您还可以包括字符作为字符实体。但是一旦您将字符设置为UTF-8，就无需将其转换为字符实体。

如果您在创建包含非ASCII字符的有效XML文档时遇到问题，请创建一个新的Stack Overflow问题，其中包括正在（或应该）正在创建XML文件的代码段。

另请参阅：

Microsoft article on encoding characters in XML

Answer 2

我找到了解决方案：我刚刚进行了交易：

FileInputStream Input = new FileInputStream(ArqAssinar);
Document Doc = DocBuilder.parse(Input);

为此：

InputStream Input = new FileInputStream(ArqAssinar);
Reader Leitor = new InputStreamReader(Input, "UTF-8");
InputSource Origem = new InputSource(Leitor);
Document Doc = DocBuilder.parse(Origem);

如何在Java中对包含特殊字符的XML文档进行签名？

2 个答案: