内容是不是在序言问题允许

这是我签署一份XML内容是不是在序言问题允许

public String signXML(String xmlDocument, boolean includeKeyInfo) { 
    Security.addProvider(new BouncyCastleProvider()); 
    try { 
     // Parse the input XML 
     DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 
     dbf.setNamespaceAware(true); 
     Document inputDocument = dbf.newDocumentBuilder().parse(new InputSource(new StringReader(xmlDocument))); 

     // Sign the input XML's DOM document 
     Document signedDocument = sign(inputDocument, includeKeyInfo); 

     // Convert the signedDocument to XML String 
     StringWriter stringWriter = new StringWriter(); 
     TransformerFactory tf = TransformerFactory.newInstance(); 
     Transformer trans = tf.newTransformer(); 
     trans.transform(new DOMSource(signedDocument), new StreamResult(stringWriter)); 

     return stringWriter.getBuffer().toString(); 
    } catch (Exception e) { 
     e.printStackTrace(); 
     throw new RuntimeException("Error while digitally signing the XML document", e); 
    } 
}

代码我使用它在这里

public static void main(String [] ags) 
{ 
    //SignGenerator signgenerator=new SignGenerator(); 
    //signgenerator.generateXMLDigitalSignature("C:\\Users\\admin\\workspace\\Esign_Request\\Esign.xml", "C:\\Users\\admin\\workspace\\Esign_Request\\jaxb-emp.xml", "C:\\Users\\admin\\Downloads\\simple.p12", "C:\\Users\\admin\\Downloads\\uidai_auth_prod.cer"); 
    char[] a={'p','u','b','l','i','c'}; 
    DigitalSigner ds=new DigitalSigner("C:\\Users\\admin\\Downloads\\simple.p12",a,"public"); 
    String s=ds.signXML("C:\\Users\\admin\\workspace\\Esign_Request\\Esign.xml",true); 
    System.out.println(s); 
}

但其示值误差

Fatal Error] :1:1: Content is not allowed in prolog. 

org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog. 
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source) 
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source)

其表现错误

Document inputDocument = dbf.newDocumentBuilder().parse(new InputSource(new StringReader(xmlDocument)));

我已经阅读了关于这个主题的所有答案，他们都指向<?xml >标签，但它有一些东西，但是......我传递的XML是以<?xml标签开始的。没有空格那么，它为什么显示错误？

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> 
<Esign ts="2016-06-09T16:44:44" txn="78e65b0e-a20c-4fe2-b3cc-746a8e0c4670" esignClass="1" aspId="KNTR-900" gatewayPin="" preferredCa="" sc="Y" ver="1.0"> 
    <Input>658c26712e1d4591253833407dc2cd81b8b686370d38b4c65c2ea6bdf54e5dd4</Input> 
    <Aadhaar>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</Aadhaar> 
</Esign>

来源

2016-06-10 Mudit

我使用的升华。它没有显示任何东西 – Mudit

请重新检查您的文件并告诉我们第一个“<”对应的字节（并且请不要猜测，如果有疑问，请尝试使用十六进制编辑器）。它并不是你在它前面有第一个字节，如果你没有在文本编辑器中看到它，它可能是一个BOM，就像RC指出的那样。 – Thomas

如何删除BOM并识别它。 – Mudit

一种可能性是不存在的文件的开始BOM，请尝试使用一些先进的编辑器来查看当前的编码，并保存在UTF-8的XML没有BOM。

用崇高的文本，在文件菜单中，使用保存编码，然后选择“UTF-8”：

这应该删除您的BOM

来源

2016-06-11 06:39:47

我做了一些改变，现在它加工。但仍然没有找到它在之前的版本中显示错误的原因。

以前的译本：

Document inputDocument = dbf.newDocumentBuilder().parse(new InputSource(new StringReader(xmlDocument)));

新版本 - ：

Document inputDocument = dbf.newDocumentBuilder().parse(new InputSource(new File(XmlDocument));

我改变StringReader（XMLDOCUMENT）到文件（XmlDocument的）

来源

2016-06-11 09:26:53 Mudit

内容是不是在序言问题允许

回答

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