如何使用Java发送SOAP请求报文 Java构造XML SOAP接口请求方法

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.StringReader;
import java.io.StringWriter;

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.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

public class SoapClientManual {

    public static void main(String[] args) {
        String soapEndpointUrl = "http://localhost:8080/your-service/MyService"; // 替换为你的服务地址
        String targetNamespace = "http://your.namespace.com/"; // 替换为你的业务命名空间
        String soapAction = "http://your.namespace.com/YourOperation"; // 替换为你的SOAPAction

        try {
            // 1. 构建XML SOAP请求报文
            DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
            docFactory.setNamespaceAware(true); // 必须设置，处理命名空间
            DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
            Document doc = docBuilder.newDocument();

            Element envelope = doc.createElementNS("http://schemas.xmlsoap.org/soap/envelope/", "soapenv:Envelope");
            doc.appendChild(envelope);

            Element header = doc.createElementNS("http://schemas.xmlsoap.org/soap/envelope/", "soapenv:Header");
            envelope.appendChild(header);

            Element body = doc.createElementNS("http://schemas.xmlsoap.org/soap/envelope/", "soapenv:Body");
            envelope.appendChild(body);

            // 实际的业务数据部分，例如调用一个名为 'sayHello' 的操作，带一个 'name' 参数
            Element operation = doc.createElementNS(targetNamespace, "ns:sayHello"); // ns: 是自定义前缀
            body.appendChild(operation);

            Element paramName = doc.createElementNS(targetNamespace, "ns:name");
            paramName.setTextContent("Java Developer"); // 设置参数值
            operation.appendChild(paramName);

            // 将Document转换为字符串
            TransformerFactory transformerFactory = TransformerFactory.newInstance();
            Transformer transformer = transformerFactory.newTransformer();
            transformer.setOutputProperty(OutputKeys.INDENT, "yes"); // 格式化输出，方便阅读
            StringWriter writer = new StringWriter();
            transformer.transform(new DOMSource(doc), new StreamResult(writer));
            String soapRequest = writer.toString();

            System.out.println("Generated SOAP Request:\n" + soapRequest);

            // 2. 使用HttpClient发送请求
            HttpClient httpClient = HttpClientBuilder.create().build();
            HttpPost httpPost = new HttpPost(soapEndpointUrl);

            // 设置Content-Type和SOAPAction头部
            httpPost.setHeader("Content-Type", "text/xml; charset=UTF-8"); // SOAP 1.1
            httpPost.setHeader("SOAPAction", soapAction);

            StringEntity requestEntity = new StringEntity(soapRequest, "UTF-8");
            httpPost.setEntity(requestEntity);

            HttpResponse response = httpClient.execute(httpPost);
            String responseString = EntityUtils.toString(response.getEntity(), "UTF-8");

            System.out.println("SOAP Response Status: " + response.getStatusLine().getStatusCode());
            System.out.println("SOAP Response:\n" + responseString);

            // 3. 解析SOAP响应（示例：查找某个元素）
            if (response.getStatusLine().getStatusCode() == 200) {
                Document responseDoc = docBuilder.parse(new InputSource(new StringReader(responseString)));
                // 假设响应中有一个 'greeting' 元素
                NodeList greetingNodes = responseDoc.getElementsByTagNameNS(targetNamespace, "greeting");
                if (greetingNodes.getLength() > 0) {
                    String greeting = greetingNodes.item(0).getTextContent();
                    System.out.println("Parsed Greeting: " + greeting);
                }
            } else {
                System.err.println("Error response from server. Check status code and response body for SOAP Fault.");
            }

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

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.13</version>
</dependency>