Java6發布了，其中一個吸引我的新特性就是原生支持WebServices。在這和大家分享下學習心得。
下面就開始寫個最簡單的WebServices：
package org.hermit.study.jdk;
import javax.jws.WebMethod;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
@WebService(targetNamespace = "http://jdk.study.hermit.org/client")
@SOAPBinding(style = SOAPBinding.Style.RPC)
public class Hello {
@WebMethod
public String sayHello(String name) {
return "hello:" + name;
}
}
怎么樣簡潔吧，很多朋友的寫法還要在命令行中執行“
wsgen –cp . <path>”
用偶這種方法寫的service可以省去上面這步。
targetNamespace = "http://jdk.study.hermit.org/client"這句是指定客戶端獲取服務端服務后存放的類路徑。注意是反著的，http: //jdk.study.hermit.org/client在客戶端生成的類會放在org.hermit.study.jdk.client包下。
下面是發布服務：
package org.hermit.study.jdk;
import javax.xml.ws.Endpoint;
public class StartService ...{
public static void main(String[] args) ...{
Endpoint.publish("http://localhost:8080/HelloService", new Hello());
}
}
呵呵，更簡潔。一句話而已。
http://localhost:8080/HelloService是指發布的地址
運行StartService ...，開發瀏覽器輸入：http://localhost:8080/HelloService?wsdl
如果能看到以下內容，就可以
<?xml version="1.0" encoding="UTF-8" ?>
- <definitions xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:tns="http://jdk.study.hermit.org/client" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" targetNamespace="http://jdk.study.hermit.org/client" name="HelloService">
<types />
- <message name="sayHello">
<part name="arg0" type="xsd:string" />
</message>
- <message name="sayHelloResponse">
<part name="return" type="xsd:string" />
</message>
- <portType name="Hello">
- <operation name="sayHello" parameterOrder="arg0">
<input message="tns:sayHello" />
<output message="tns:sayHelloResponse" />
</operation>
</portType>
- <binding name="HelloPortBinding" type="tns:Hello">
<soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http" />
- <operation name="sayHello">
<soap:operation soapAction="" />
- <input>
<soap:body use="literal" namespace="http://jdk.study.hermit.org/client" />
</input>
- <output>
<soap:body use="literal" namespace="http://jdk.study.hermit.org/client" />
</output>
</operation>
</binding>
- <service name="HelloService">
- <port name="HelloPort" binding="tns:HelloPortBinding">
<soap:address location="http://localhost:8080/HelloService" />
</port>
</service>
</definitions>