我正在使用 JAX-WS 创建 Web 服务并发布它。 我想知道的是;是否可以在不创建接口(interface)的情况下发布 web 服务。 意思是,现在我创建一个界面
端点接口(interface)类:
package com.ad.ws;
import javax.jws.WebMethod;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.jws.soap.SOAPBinding.ParameterStyle;
import javax.jws.soap.SOAPBinding.Style;
import javax.jws.soap.SOAPBinding.Use;
@WebService
@SOAPBinding(style = Style.DOCUMENT, use = Use.LITERAL, parameterStyle = ParameterStyle.WRAPPED)
public interface PowerCalculator
{
@WebMethod Double raisedToThePower(Double base, Double power);
}
然后我创建一个接口(interface)实现类:
package com.ad.ws;
import javax.jws.WebService;
@WebService(endpointInterface="com.ad.ws.PowerCalculator")
public class PowerCalculatorImpl implements PowerCalculator
{
@Override
public Double raisedToThePower(Double base, Double power)
{
return Math.pow(base, power);
}
}
在此之后我使用这样的方式发布:
package com.ad.endpoint;
import javax.xml.ws.Endpoint;
import com.ad.ws.PowerCalculatorImpl;
public class PowerCalculatorPublisher
{
public static void main(String[] args)
{
System.out.println("Starting publish of the PowerCalculator service...");
Endpoint.publish("http://myhostname.ad.com:8585/ayusman/PowCalc", new PowerCalculatorImpl());
}
}
我想知道的是,能否将接口(interface)和实现器合二为一;像这样的东西:
package com.ad.ws;
import javax.jws.WebMethod;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.jws.soap.SOAPBinding.ParameterStyle;
import javax.jws.soap.SOAPBinding.Style;
import javax.jws.soap.SOAPBinding.Use;
@WebService(endpointInterface="com.ad.ws.PowerCalculatorImpl")
@SOAPBinding(style = Style.DOCUMENT, use = Use.LITERAL, parameterStyle = ParameterStyle.WRAPPED)
public class PowerCalculatorImpl
{
@WebMethod public Double raisedToThePower(Double base, Double power)
{
return Math.pow(base, power);
}
}
当我这样做并启动发布者时,我得到以下堆栈跟踪
Exception in thread "main" com.sun.xml.internal.ws.model.RuntimeModelerException: The web service defined by the class com.ad.ws.PowerCalculatorImpl does not contain any valid WebMethods.
创建服务接口(interface)对于创建 Web 服务来说绝对必要吗?
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更新 1:
我错过了方法签名中的 public 关键字:
@WebMethod public Double raisedToThePower(Double base, Double power)
在@kingAm 的建议下,我删除了 endpointInterface,所以类看起来像:
package com.ad.ws;
import javax.jws.WebMethod;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.jws.soap.SOAPBinding.ParameterStyle;
import javax.jws.soap.SOAPBinding.Style;
import javax.jws.soap.SOAPBinding.Use;
@WebService
@SOAPBinding(style = Style.DOCUMENT, use = Use.LITERAL, parameterStyle = ParameterStyle.WRAPPED)
public class PowerCalculatorImpl
{
@WebMethod public Double raisedToThePower(Double base, Double power)
{
return Math.pow(base, power);
}
}
我的简单客户端类如下所示:
package com.ad.client;
import java.net.URL;
import javax.xml.namespace.QName;
import javax.xml.ws.Service;
import com.ad.ws.PowerCalculatorImpl;
public class PowerCalculatorImplClient
{
public static void main(String[] args) throws Exception
{
URL url = new URL("http://myhostname.ad.com:8585/ayusman/PowCalc?wsdl");
QName qname = new QName("http://ws.ad.com/", "PowerCalculatorService");
Service service = Service.create(url, qname);
PowerCalculatorImpl powerCalculatorImpl = service.getPort(PowerCalculatorImpl.class);
System.out.println(powerCalculatorImpl.raisedToThePower(2, 5));
}
}
以下是我看到的异常(exception)情况:
Exception in thread "main" java.lang.IllegalArgumentException: com.ad.ws.powerCalculatorImpl is not an interface
at java.lang.reflect.Proxy.getProxyClass0(Unknown Source)
at java.lang.reflect.Proxy.newProxyInstance(Unknown Source)
at com.sun.xml.internal.ws.client.WSServiceDelegate$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
似乎 jax-ws 需要一个接口(interface),还是我弄错了?
最佳答案
Is creating an service interface absolutely essential in creating a web service?
不,没有必要。
What I wanted to know is, can I combine both the interface and the implemntor into one
是的,你可以。只需在您的实现类中删除 Webservice 注释中的 endpointInterface 声明。
@WebService(endpointInterface="com.ad.ws.PowerCalculatorImpl")
所以你的实现类将是,
package com.ad.ws;
import javax.jws.WebMethod;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.jws.soap.SOAPBinding.ParameterStyle;
import javax.jws.soap.SOAPBinding.Style;
import javax.jws.soap.SOAPBinding.Use;
@WebService()
@SOAPBinding(style = Style.DOCUMENT, use = Use.LITERAL, parameterStyle = ParameterStyle.WRAPPED)
public class PowerCalculatorImpl
{
@WebMethod public Double raisedToThePower(Double base, Double power)
{
return Math.pow(base, power);
}
}
以上代码应该可以完美无误地工作。
我已经尝试了以下场景,并且运行良好。
我的实现类,
package com.KingAm.HelloWorld;
import javax.jws.WebMethod;
import javax.jws.WebResult;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.jws.soap.SOAPBinding.ParameterStyle;
import javax.jws.soap.SOAPBinding.Style;
import javax.jws.soap.SOAPBinding.Use;
@WebService
@SOAPBinding(style = Style.RPC, use=Use.LITERAL, parameterStyle= ParameterStyle.WRAPPED)
public class helloWorldImpl{
@WebMethod(action="hello",operationName="helloWorld")
@WebResult(name="response1")
public String tMethod(String a, String b, String c)
{
if(!c.equals(null))
return "hello "+a+b+c;
else
return "okok";
}
//@Override
@WebMethod(action="hello2",operationName="helloWorld2")
@WebResult(name="response2")
public String tMethod2(String a, String b) {
// TODO Auto-generated method stub
return null;
}
}
我的发布者类是,
package com.KingAm.HelloWorld;
import javax.xml.ws.Endpoint;
//import helloWorldImpl;
public class helloWorldPublisher {
/**
* @param args
*/
public static void main(String[] args) {
Endpoint.publish("http://localhost:8888/ws/helloWorld", new helloWorldImpl());
System.out.println("Hello World Server is published!");
}
}
请检查一次你的代码,你一定是遗漏了什么。
关于java - 在不创建接口(interface)的情况下发布 Web 服务,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22006092/