用httpclient实现soap数据获取

HttpClientBuilder httpClientBuilder = HttpClients.custom();
        HttpClient httpClient = httpClientBuilder.build();
        HttpHost httpHost = new HttpHost("服务器IP地址", 80);
        HttpPost httpGet = new HttpPost("URL地址.asmx");
        httpGet.setHeader("SOAPAction", "http://tempuri.org/action名称");
        httpGet.setHeader("Content-Type", "text/xml; charset=utf-8");

        String str = "<?xml version=\"1.0\" encoding=\"utf-8\"?>";
        str = str
                + "<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/\">";
        str = str + "<soap:Body>";
        str = str + "<数据标签  xmlns=\"http://名字空间/\" >";
        str = str + "各种参数";
        str = str + "</数据标签>";
        str = str + "</soap:Body>";
        str = str + "</soap:Envelope>";
    
        StringEntity entity = new StringEntity(str, Charset.forName("UTF-8"));
        entity.setContentEncoding("UTF-8");
        entity.setContentType("application/xml");
        httpGet.setEntity(entity);
        HttpResponse httpResponse = httpClient.execute(httpHost, httpGet);
        HttpEntity httpEntity = httpResponse.getEntity();
        InputStream inputStream = httpEntity.getContent();
        InputStreamReader inputStreamreader = new InputStreamReader(inputStream, "utf-8");
        BufferedReader bufferedReader = new BufferedReader(inputStreamreader);
        StringBuilder result = new StringBuilder();
        while (true) {
            char buf[] = new char[1024];
            int readed = bufferedReader.read(buf);
            if (readed <= 0) {
                break;
            }
            result.append(buf, 0, readed);
        }
        bufferedReader.close();