Webservice初體驗：axis調用wsdl和document解析

Neo君遇到了需要調用webservice接口的情況，然而作為一只小白對這方面了解困乏，經過摸索，完成了一個小的Demo，記錄下。

一：背景

同事給了我一個webservice地址，打開后后綴是"...?wsdl"，將鏈接"http://......?wsdl"放入soapUI中，可以解析出完整的。但是Neo君之前對這邊是空白的，上網搜索了一些webservice和soap以及wsdl的基本知識后，才了解了一些。但是具體到代碼里使用，網上搜到的內容好多都是copy的，且不完整。

二：Code

話不多說，中間走過的彎路一並帶過，直接貼代碼。

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";
            // 直接引用遠程的wsdl文件,"?wsdl"前的鏈接
            String method="test";
            String namespace = "http://www.xxxx";

            Service service = new Service();
            Call call = (Call) service.createCall();
            //設置服務器地址
            call.setTargetEndpointAddress(new java.net.URL(endpoint));
            //設置命名空間和調用方法
            call.setOperationName(new QName(namespace,method));// WSDL里面描述的接口名稱
            call.setUseSOAPAction(true);


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

            //添加方法的參數，有幾個添加幾個
            call.addParameter("param1", XMLType.XSD_STRING, javax.xml.rpc.ParameterMode.IN);// 接口的參數
            call.addParameter("param2", XMLType.XSD_STRING, javax.xml.rpc.ParameterMode.IN);// 接口的參數
            //設置返回類型
            
            /*返回類型可以不設置，如果是簡單類型可以使用XMLType.XSD_STRING等簡單類型，這里使用schema解析返回的報文。
            如果接收的類型和設置的類型不一致，會報以下異常：
            SimpleDeserializer encountered a child element, which is NOT expected, in something it was trying to deserialize.*/
            call.setReturnType(XMLType.XSD_SCHEMA);// 設置返回類型



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

            //解析返回結果
            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());
            }


            //輸出SOAP請求報文
            System.out.println("--SOAP Request: " + call.getMessageContext().getRequestMessage().getSOAPPartAsString());
            //輸出SOAP返回報文
            System.out.println("--SOAP Response: " + call.getResponseMessage().getSOAPPartAsString());


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

        }
    }
    /*構造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;
        }
    }
}