如何在java中为我的webservice调用设置连接超时和请求超时

Question

我有一个要求，我需要与第三方网络服务进行通信以执行某些任务。

首先我需要向会话控制管理器网络服务发送登录soap请求以获取会话ID。

使用该会话 ID，我需要将执行任务的实际 soap 请求发送到 web 服务 2。

最后我需要向会话控制管理器网络服务发送注销soap请求。

我还需要为每个呼叫设置连接超时和请求超时。

1. 我们如何设置soap webservice调用的连接超时和请求超时？
2. 由于我将调用 Web 服务 3 次，我是否需要每次都设置连接超时/请求超时？ 下面是示例代码

`

public static void main(String args[]) throws Exception {

SOAPMessage loginMessage = null;
SOAPMessage operationMessage = null;
SOAPMessage logoutMessage = null;

SOAPMessage loginResp  = null;
SOAPMessage operationResp  = null;
SOAPMessage logoutResp  = null;
String loginResponse = null;
String logoutResponse = null;
String operationResponse = null;

SOAPConnectionFactory connectionFactory = SOAPConnectionFactory.newInstance();
/**
 * Get SOAP connection.
 */
SOAPConnection soapConnection = connectionFactory.createConnection();

//Sending Login request

loginResp=soapConnection.call(loginMessage, "https://IP:port/Login");

ByteArrayOutputStream os = new ByteArrayOutputStream();
loginResp.writeTo(os);

loginResponse = os.toString();

System.out.println("The Login call has been made");
System.out.println("The response message is : " + loginResponse);

if (checkForValidResponse(loginResponse, "LoginResponse"))
{
    System.out.println("The call is successful");

    operationResp = soapConnection.call(operationMessage, "https://IP:port/Login");

    os.reset();
    operationResp.writeTo(os);
    operationResponse = os.toString();

    System.out.println("The operation call has been made");
    System.out.println("The response message is : " + loginResponse);

    if(checkForValidResponse(operationResponse, "OperationResponse")){
        System.out.println("The operation call is successful");

    }else{
        System.out.println("The Operation Call was not successful");
    }

}else{
    System.out.println("The Login Call was not successful");

}

logoutResp=soapConnection.call(logoutMessage, "https://IP:port/Login");

os.reset();
logoutResp.writeTo(os);

logoutResponse = os.toString();

System.out.println("The Logout call has been made");
System.out.println("The response message is : " + logoutResponse);

if (checkForValidResponse(logoutResponse, "LogoutResponse"))
{
    System.out.println("The Logout call was successful");
}else{
    System.out.println("The Logout call was Unsuccessful");
}


soapConnection.close();
 }

  private static Boolean checkForValidResponse(String resp, String responseRootNode) throws Exception {

System.out.println("Expected Body Element:" +responseRootNode);

if(resp.contains(responseRootNode) && !resp.contains("Fault")){
    System.out.println("Received Valid Response" );
    return true ;

}
else{
    System.out.println("Fault found in Response");
    return false;
}
}`

Answer 1

创建您自己的 URLStreamHandler 以便您可以设置 URLConnection 参数，例如连接超时，读取超时

URL 的 API 规范：

SOAPConnection connection = SOAPConnectionFactory.newInstance().createConnection();
// creating URL from string represtation
URL endpoint = new URL(null,
      "http://example.com/path/to/webservice",
      new URLStreamHandler() {
        @Override
        protected URLConnection openConnection(URL url) throws IOException {
          URL target = new URL(url.toString());
          URLConnection connection = target.openConnection();
          // Connection settings
          connection.setConnectTimeout(10000); // 10 sec
          connection.setReadTimeout(60000); // 1 min
          return(connection);
        }
      });

SOAPMessage result = connection.call(soapMessage, endpoint);