Java 调用 webservice 接口，为什么这么慢，有没有好的优化方案，本人目前改成 http 方式发 soap 消息调用，速度依旧很慢，维持在平均 100ms 下不来。

之前用 cxf 的 JaxWsDynamicClientFactory 速度更加慢，400ms 、500ms 都出现过。

这是现在使用 httpClient 的调用代码

public static String callWebSV(String urlWsdl,String soap,String soapAction){

String result=null;

try {

CloseableHttpClient httpClient = HttpClients.createDefault();

HttpPost httpPost = new HttpPost(urlWsdl);

httpPost.setHeader("Content-Type", "text/xml;charset=UTF-8");

httpPost.setHeader("SOAPAction", soapAction);

InputStreamEntity entity = new InputStreamEntity(new ByteArrayInputStream(soap.getBytes()));

httpPost.setEntity(entity);

CloseableHttpResponse response = httpClient.execute( httpPost);

if (response.getStatusLine().getStatusCode() == org.apache.http.HttpStatus.SC_OK) {

HttpEntity responseEntity = response.getEntity();

String back = EntityUtils.toString(responseEntity);

//log.info("httpClient 返回 soap：" + back);

result=parseResult(back);

log.info("httpClient 返回结果：" + result);

} else {

log.error("HttpClinet 返回状态码：" + response.getStatusLine().getStatusCode());

}

} catch (Exception e) {

log.error("调用错误：",e);

}

return result;

}