如何使用Java从SOAP响应中检索元素值？

Question

我正在尝试从以下来自Salesforce的String响应中获取标签值，

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns="http://soap.sforce.com/2006/04/metadata">
   <soapenv:Body>
      <listMetadataResponse>
         <result>
            <createdById>00528000001m5RRAAY</createdById>
            <createdByName>Hariprasath Thanarajah</createdByName>
            <createdDate>1970-01-01T00:00:00.000Z</createdDate>
            <fileName>objects/EmailMessage.object</fileName>
            <fullName>EmailMessage</fullName>
            <id />
            <lastModifiedById>00528000001m5RRAAY</lastModifiedById>
            <lastModifiedByName>Hariprasath Thanarajah</lastModifiedByName>
            <lastModifiedDate>1970-01-01T00:00:00.000Z</lastModifiedDate>
            <namespacePrefix />
            <type>CustomObject</type>
         </result>
      </listMetadataResponse>
   </soapenv:Body>
</soapenv:Envelope>

上面有标签<fullName>。我需要在标签内获取值并将其放入String数组。我已经尝试过使用substring方法，但是它仅返回一个值。有人可以建议我这样做吗？

Answer 1

我已经尝试过如下

public static Document loadXMLString(String response) throws Exception
{
    DocumentBuilderFactory dbf =DocumentBuilderFactory.newInstance();
    DocumentBuilder db = dbf.newDocumentBuilder();
    InputSource is = new InputSource(new StringReader(response));

    return db.parse(is);
}

public static List<String> getFullNameFromXml(String response, String tagName) throws Exception {
    Document xmlDoc = loadXMLString(response);
    NodeList nodeList = xmlDoc.getElementsByTagName(tagName);
    List<String> ids = new ArrayList<String>(nodeList.getLength());
    for(int i=0;i<nodeList.getLength(); i++) {
        Node x = nodeList.item(i);
        ids.add(x.getFirstChild().getNodeValue());             
        System.out.println(nodeList.item(i).getFirstChild().getNodeValue());
    }
    return ids;
}

从上面的代码中，您将获得ID列表。之后，您可以将其放入String数组，然后将其返回String数组，如下所示，

List<String> output = getFullNameFromXml(response, "fullName");
String[] strarray = new String[output.size()];
output.toArray(strarray);
System.out.print("Response Array is "+Arrays.toString(strarray));