java客户端访问.net实现的WebService

最新推荐文章于 2022-12-25 18:49:00 发布

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#webservice #.net #java #soap #import #encoding

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本文介绍如何使用Java客户端通过Axis2访问一个由.NET实现的WebService。该WebService提供两个整数相加的服务，演示了从创建请求到解析响应的全过程。

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前两天有个同事说他们项目组有个用.net实现的WebService，需要用java客户端访问，让我帮着看看怎么做，正好最近在用axis2，就试了试，虽然最后解决了，但还是稍微碰到了些障碍，特别记录下来以供参考。

.net的WebService是接收两个整数，返回它们的和，描述是这样的，对于.net开发人员来说应该很熟悉：
POST /TestWebService1/Service1.asmx HTTP/1.1
Host: XXXX
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: "http://tempuri.org/test"

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
    <test xmlns="http://tempuri.org/">
      <a>int</a>
      <b>int</b>
    </test>
</soap:Body>
</soap:Envelope>
HTTP/1.1 200 OK
Content-Type: text/xml; charset=utf-8
Content-Length: length

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
    <testResponse xmlns="http://tempuri.org/">
      <testResult>int</testResult>
    </testResponse>
</soap:Body>
</soap:Envelope>

最后的客户端java代码是这样的，需要注意的是红色部分：
package sample;

import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNamespace;
import org.apache.axis2.Constants;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.Options;
import org.apache.axis2.client.ServiceClient;

public class AXIOMClient {

    private static EndpointReference targetEPR =
        new EndpointReference("http://XXXX/TestWebService1/Service1.asmx");

    public static OMElement getTopTree() {
        OMFactory fac = OMAbstractFactory.getOMFactory();

        OMNamespace omNs = fac.createOMNamespace("http://tempuri.org/", "ns");
        OMElement method = fac.createOMElement("test", omNs);

        OMElement value1 = fac.createOMElement("a", omNs);
        value1.addChild(fac.createOMText(value1, "12"));
        method.addChild(value1);

        OMElement value2 = fac.createOMElement("b", omNs);
        value2.addChild(fac.createOMText(value2, "33"));
        method.addChild(value2);

        return method;
    }

    public static void main(String[] args) {
        try {
            OMElement getTopTree = getTopTree();
            Options options = new Options();
            options.setTo(targetEPR);
            options.setAction("http://tempuri.org/test");
            options.setTransportInProtocol(Constants.TRANSPORT_HTTP);

            ServiceClient sender = new ServiceClient();
            sender.setOptions(options);

            OMElement result = sender.sendReceive(getTopTree);
            String response = result.getFirstElement().getText();

            System.err.println("RET: " + response);

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

}