Web 服务建议 Java

Question

我正在读一本关于 Java 和 Web 服务的书，但我陷入了本书的第一个示例。看看这些代码，请告诉我您将如何运行这些类以及如何或在哪里保存它们。无需使用任何 IDE！

时间服务器类

    package web.ts;  // time server

    import javax.jws.WebService;
    import javax.jws.WebMethod;
    import javax.jws.soap.SOAPBinding;
    import javax.jws.soap.SOAPBinding.Style;

  /**
  *  The annotation @WebService signals that this is the
  *  SEI (Service Endpoint Interface). @WebMethod signals 
  *  that each method is a service operation.
  *
  *  The @SOAPBinding annotation impacts the under-the-hood
  *  construction of the service contract, the WSDL
  *  (Web Services Definition Language) document. Style.RPC
  *  simplifies the contract and makes deployment easier.
  */

    @WebService
    @SOAPBinding(style = Style.RPC) // more on this later
    public interface TimeServer {
    @WebMethod String getTimeAsString();
    @WebMethod long getTimeAsElapsed();
    }

时间服务器Impl 打包 web.ts；

       import java.util.Date;
       import javax.jws.WebService;

 /**
 *  The @WebService property endpointInterface links the
 *  SIB (this class) to the SEI (ch01.ts.TimeServer).
 *  Note that the method implementations are not annotated
 *  as @WebMethods.
 */
     @WebService(endpointInterface = "ch01.ts.TimeServer")
     public class TimeServerImpl implements TimeServer {
     public String getTimeAsString() { return new Date().toString(); }
     public long getTimeAsElapsed() { return new Date().getTime(); }
     }

然后是最后一堂课 时间服务器发布者 打包 web.ts;

import javax.xml.ws.Endpoint;

    /**
* This application publishes the web service whose
* SIB is ch01.ts.TimeServerImpl. For now, the 
* service is published at network address 127.0.0.1.,
* which is localhost, and at port number 9876, as this
* port is likely available on any desktop machine. The
* publication path is /ts, an arbitrary name.
*
* The Endpoint class has an overloaded publish method.
* In this two-argument version, the first argument is the
* publication URL as a string and the second argument is
* an instance of the service SIB, in this case
* ch01.ts.TimeServerImpl.
*
* The application runs indefinitely, awaiting service requests.
* It needs to be terminated at the command prompt with control-C
* or the equivalent.
*
* Once the applicatation is started, open a browser to the URL
*
*     http://127.0.0.1:9876/ts?wsdl
*
* to view the service contract, the WSDL document. This is an
* easy test to determine whether the service has deployed
* successfully. If the test succeeds, a client then can be
* executed against the service.
*/
public class TimeServerPublisher {
public static void main(String[ ] args) {
  // 1st argument is the publication URL
  // 2nd argument is an SIB instance
  Endpoint.publish("http://127.0.0.1:9876/ts", new TimeServerImpl());
 }
 }

我知道如何编译它们。但是当我尝试运行发布者时出了问题。

我保存它们的方式是在一个名为 Web/ts/“这里是三个类”的文件夹中

Answer 1

据我所知，接口文件和 impl 文件可以位于不同的文件夹中（在 src 文件夹下），但接口文件的 @WebService(endpointInterface = "ch01.ts.TimeServer") 路径应该正确显示。一旦此路径正确，就会进行发布并生成 wsdl。

Answer 2

如果您想学习 Web 服务，我建议您下载现有框架，例如 Apache CXF 或 Apache axis2。它们包括许多可以编译和运行的示例。这些示例很容易理解，您从一开始就会得到一些有用的东西。 它们还为您提供了相当好的项目结构，因此您知道在哪里放置 xml 和 wsdl 文件等。

是的，您不需要 IDE 来运行它们。根据我的经验，最好不使用 IDE 开始，这样您就可以确切地知道发生了什么。 IDE 将提高您以后的工作效率。