Webservice初体验：axis调用wsdl和document解析

Neo君遇到了需要调用webservice接口的情况，然而作为一只小白对这方面了解困乏，经过摸索，完成了一个小的Demo，记录下。

一：背景

同事给了我一个webservice地址，打开后后缀是"...?wsdl"，将链接"http://......?wsdl"放入soapUI中，可以解析出完整的。但是Neo君之前对这边是空白的，上网搜索了一些webservice和soap以及wsdl的基本知识后，才了解了一些。但是具体到代码里使用，网上搜到的内容好多都是copy的，且不完整。

二：Code

话不多说，中间走过的弯路一并带过，直接贴代码。

 import org.apache.axis.client.Call;
 import org.apache.axis.client.Service;
 import org.apache.axis.encoding.XMLType;
 import org.apache.axis.message.MessageElement;
 import org.apache.axis.message.SOAPHeaderElement;
 import org.apache.axis.types.Schema;
 import org.dom4j.Document;
 import org.dom4j.io.SAXReader;

 import javax.xml.namespace.QName;
 import javax.xml.soap.SOAPElement;
 import javax.xml.soap.SOAPFactory;
 import java.io.ByteArrayInputStream;

 public class WebserviceUtilTest {
     public static void main(String[] args) {
         try{
             String endpoint="http://xxx";
             // 直接引用远程的wsdl文件,"?wsdl"前的链接
             String method="test";
             String namespace = "http://www.xxxx";

             Service service = new Service();
             Call call = (Call) service.createCall();
             //设置服务器地址
             call.setTargetEndpointAddress(new java.net.URL(endpoint));
             //设置命名空间和调用方法
             call.setOperationName(new QName(namespace,method));// WSDL里面描述的接口名称
             call.setUseSOAPAction(true);

             //设置header，如果有security需求的话
             SOAPHeaderElement soapHeaderElement = createHeader();
             if(soapHeaderElement == null){
                 System.out.println("====Exception");
                 return;
             }
             call.addHeader(soapHeaderElement);

             //添加方法的参数，有几个添加几个
             call.addParameter("param1", XMLType.XSD_STRING, javax.xml.rpc.ParameterMode.IN);// 接口的参数
             call.addParameter("param2", XMLType.XSD_STRING, javax.xml.rpc.ParameterMode.IN);// 接口的参数
             //设置返回类型

             /*返回类型可以不设置，如果是简单类型可以使用XMLType.XSD_STRING等简单类型，这里使用schema解析返回的报文。
             如果接收的类型和设置的类型不一致，会报以下异常：
             SimpleDeserializer encountered a child element, which is NOT expected, in something it was trying to deserialize.*/
             call.setReturnType(XMLType.XSD_SCHEMA);// 设置返回类型

             String param1Value = "test";
             String param2Value = "test";
             Schema result =  (Schema) call.invoke(new Object[] { account,passwd });

             //解析返回结果
             MessageElement[] data = result.get_any();
             for(int i=0; i<data.length; i++){
                 SAXReader reader = new SAXReader();
                 Document doc = reader.read(new ByteArrayInputStream(data[i].toString().getBytes()));
                 System.out.println(doc.getStringValue());
             }

             //输出SOAP请求报文
             System.out.println("--SOAP Request: " + call.getMessageContext().getRequestMessage().getSOAPPartAsString());
             //输出SOAP返回报文
             System.out.println("--SOAP Response: " + call.getResponseMessage().getSOAPPartAsString());

         }catch (Exception e){
             e.printStackTrace();

         }
     }
     /*构造Header*/
     public static SOAPHeaderElement createHeader(){
         String AUTH_PREFIX = "wsse";
         String AUTH_NS = "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd";
         String TYPE = "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText";

         String userName= "admin";
         String passwd= "admin";

         //SOAPHeaderElement soapHeaderElement =new SOAPHeaderElement();

         try{
             SOAPFactory soapFactory =SOAPFactory.newInstance();
             SOAPElement wsSecHeaderElm = soapFactory.createElement("Security", AUTH_PREFIX, AUTH_NS);
             SOAPElement userNameTokenElm = soapFactory.createElement("UsernameToken",AUTH_PREFIX, AUTH_NS);
             SOAPElement userNameElm = soapFactory.createElement("Username",AUTH_PREFIX, AUTH_NS);
             SOAPElement passwdElm = soapFactory.createElement("Password",AUTH_PREFIX, AUTH_NS);
             passwdElm.setAttribute("Type", TYPE);

             userNameElm.addTextNode(userName);
             passwdElm.addTextNode(passwd);

             userNameTokenElm.addChildElement(userNameElm);
             userNameTokenElm.addChildElement(passwdElm);
             wsSecHeaderElm.addChildElement(userNameTokenElm);

             SOAPHeaderElement soapHeaderElement =  new SOAPHeaderElement(wsSecHeaderElm);
             soapHeaderElement.setMustUnderstand(true);

             return soapHeaderElement;
         }catch(Exception e) {
             e.printStackTrace();
             return null;
         }
     }
 }