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1. 场景

最近客户给了一个 API，如图，最开始以为是一个传统的post请求，结果始终返回一段奇怪的响应。

最后和小伙伴沟通、查阅资料后才知道是一种特有的SOAP协议的请求方式。

2. 原生java

豆包和Deepseek 给了一种非原生的方式，需要安装依赖和执行wsimport命令行命令。
这里提供一种清爽的方法，代码如下：

2.1 SOAP client实现

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.log4j.Log4j2;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.springframework.stereotype.Service;import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;@Log4j2
@Service
public class WeatherSoapClient {private static final String SOAP_ENDPOINT = "http://12.122.222.223:7777/GetSeaWeather.asmx?op=GetCurSeaWeatherInfo";// 根据实际文档设置命名空间private static final String SOAP_NAMESPACE = "http://tempuri.org/";public Map<String, Object> getWeatherData(double longitude, double latitude) {try {// 1. 构建 SOAP 请求体String soapRequest = buildSoapRequest(longitude, latitude);log.info("SOAP Request: {}", soapRequest);// 2. 发送 POST 请求String soapResponse = sendSoapRequest(soapRequest);// 3. 解析 SOAP 响应String str = extractTagContent(soapResponse, "GetCurSeaWeatherInfoResult");JSONObject jsonObject = JSON.parseObject(str, JSONObject.class);return jsonObject;} catch (Exception e) {throw new RuntimeException("SOAP request failed", e);}}private String buildSoapRequest(double lon, double lat) {return String.format("<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +"<soap:Envelope xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\"" +"               xmlns:api=\"%s\">" +"   <soap:Header/>" +"   <soap:Body>" +"       <api:GetCurSeaWeatherInfo>" +"           <api:lon>%s</api:lon>" +"           <api:lat>%s</api:lat>" +"       </api:GetCurSeaWeatherInfo>" +"   </soap:Body>" +"</soap:Envelope>",SOAP_NAMESPACE, lon, lat);}private String sendSoapRequest(String soapRequest) throws Exception {try (CloseableHttpClient httpClient = HttpClients.createDefault()) {HttpPost httpPost = new HttpPost(SOAP_ENDPOINT);// 设置 SOAP 特定请求头httpPost.setHeader("Content-Type", "text/xml; charset=utf-8");httpPost.setHeader("SOAPAction", SOAP_NAMESPACE + "GetCurSeaWeatherInfo");// 设置请求体httpPost.setEntity(new StringEntity(soapRequest, ContentType.TEXT_XML));try (CloseableHttpResponse response = httpClient.execute(httpPost)) {HttpEntity entity = response.getEntity();if (entity == null) {throw new RuntimeException("Empty response from SOAP service");}// 获取响应内容String responseContent = EntityUtils.toString(entity);EntityUtils.consume(entity);// 检查 HTTP 状态码int statusCode = response.getStatusLine().getStatusCode();if (statusCode != 200) {throw new RuntimeException("SOAP service returned HTTP " + statusCode +"\nResponse: " + responseContent);}return responseContent;}}}public static String extractTagContent(String xmlStr, String tagName) {String pattern = "<" + tagName + ">(.*?)</" + tagName + ">";Pattern r = Pattern.compile(pattern, Pattern.DOTALL);Matcher m = r.matcher(xmlStr);if (m.find()) {return m.group(1);}return null;}}

2.2 controller

    @Autowiredprivate WeatherSoapClient weatherSoapClient;@GetMapping("/getCurrentWeather")public ApiResult getCurrentWeather(@RequestParam double lon,@RequestParam double lat) {try {Map<String, Object> weatherData = weatherSoapClient.getWeatherData(lon, lat);return ApiResult.ok(weatherData);} catch (Exception e) {Map<String, Object> error = new HashMap<>();error.put("error", "SOAP request failed");error.put("message", e.getMessage());return ApiResult.fail(ApiCode.BUSINESS_EXCEPTION, error);}}