[英]Parse XML Namespaces (server response), in JAVA
我想显示服务器发送给我的响应,但是在解析时显示给我空字符串。 我已经尝试解析服务器响应,如其他教程中所示,但是它不起作用。 有人知道我做错了吗?
JAVA代码
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathFactory;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.w3c.dom.Document;
import freemarker.template.Configuration;
import freemarker.template.Template;
public class ClienteSoap {
public static void main(String[] args) {
HttpClient httpClient = null;
try {
Configuration cfg = new Configuration();
// Cargar plantilla
Template template = cfg.getTemplate("src/main/resources/templates/template.ftl");
// Modelo de datos
Map<String, Object> data = new HashMap<String, Object>();
data.put("token", "u757Ric6542ytu6Ricgtr0");
data.put("branch", "1");
data.put("app", "S-04600");
data.put("folio", "4345Ric67");
data.put("temp", "False");
// Crear mensaje SOAP HTTP
StringWriter out = new StringWriter();
template.process(data, out);
String strRequest = out.getBuffer().toString();
System.out.println(strRequest);
// Crear la llamada al servidor
httpClient = new DefaultHttpClient();
HttpPost postRequest = new
HttpPost("http://127.0.0.1:30005/PCIServicioConciliadorCore-web"); //direccion de la pagina
StringEntity input = new StringEntity(strRequest);
input.setContentType("text/xml");
postRequest.setEntity(input);
// Tratar respuesta del servidor
HttpResponse response = httpClient.execute(postRequest);
if (response.getStatusLine().getStatusCode() != 200) {
throw new RuntimeException("Error : Código de error HTTP : " + response.getStatusLine().getStatusCode());
}
//Obtener información de la respuesta
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
System.out.println(factory);
Document XMLDoc = factory.newDocumentBuilder().parse(response.getEntity().getContent());
XPath xpath = XPathFactory.newInstance().newXPath();
XPathExpression expr = xpath.compile("/AddToken2DBResponseType/Token");
String result = String.class.cast(expr.evaluate(XMLDoc, XPathConstants.STRING));
System.out.println("\nEl resultado es: " + result.length());
}catch (Exception e) {
e.printStackTrace();
} finally {
// Cierre de la conexión
if (httpClient != null) httpClient.getConnectionManager().shutdown();
}
}
}
WSDL响应
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
<SOAP-ENV:Header/>
<SOAP-ENV:Body>
<ns2:AddToken2DBResponse xmlns:ns2="http://www.example.com/edit/example">
<ns2:Token>u757Ric6542ytu6Ricgtr0</ns2:Token>
<ns2:HandlerError>
<ns2:statusCode>true</ns2:statusCode>
<ns2:errorList>
<ns2:error>
<ns2:code>OK</ns2:code>
<ns2:origin>JBOSS</ns2:origin>
<ns2:userMessage>Primer registro insertado</ns2:userMessage>
<ns2:developerMessage>Primer registro insertado</ns2:developerMessage>
</ns2:error>
</ns2:errorList>
</ns2:HandlerError>
</ns2:AddToken2DBResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
我感谢您的帮助
您的XPath表达式是错误的,如果它以单个/
开头,则表示该元素应为/根元素(显然,由于根元素为SOAP-ENV:Envelope
它不会找到任何内容)。 到目前为止,它应该是//AddToken2DBResponseType/Token
。
第二个问题是名称空间。 您有两种选择(我知道):
第二个选项非常不稳定,因此这里是第一个:
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
// ...
XPathExpression expr = xpath.compile("//*[local-name='AddToken2DBResponseType']/*[local-name='Token']");
//*[local-name='abc']
任何具有abc(实际上是您想要/需要的名称)的本地名称(没有名称空间的名称)的元素。
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