JDK6 中队web service的支持

JDK6中对Web Service的支持

原文： http://blog.csdn.net/zhongweijian/article/details/8008471

webService是一种跨语言的系统间交互标准。在java中使用webservice根据服务器端的服务根据描述生成WSDL文件，并将应用与此WSDL文件一起放入HTTP服务器中，借助服务工具根据WSDL文件生成客户端STUB代码。此代码的作用是将产生的对象请求信息封装成标准的SOAP格式数据，并发送到服务器端，服务器端根据接收到的SOAP格式数据进行转换，并最终通过反射调用响应类的响应方法。

 

Jdk 6中通过提供的wsimport工具，集成了WEB service的支持，通过WebService 的annotation来暴露服务的实现，并通过Endpoint.publish将服务发布到指定的地址，客户端通过wsimport来访问响应地址的wsdl文件，生成调用服务器端服务的stub类信息，客户端即可通过生成的类来调用服务器的服务了。

 

Usage: wsimport [options] 

where [options] include:
  -b                  specify jaxws/jaxb binding files or additional schemas
                            (Each  must have its own -b)
  -B            Pass this option to JAXB schema compiler
  -catalog            specify catalog file to resolve external entity references
                            supports TR9401, XCatalog, and OASIS XML Catalog format.
  -d             specify where to place generated output files
  -extension                allow vendor extensions - functionality not specified
                            by the specification.  Use of extensions may
                            result in applications that are not portable or
                            may not interoperate with other implementations
  -help                     display help
  -httpproxy::  specify a HTTP proxy server (port defaults to 8080)
  -keep                     keep generated files
  -p                   specifies the target package
  -quiet                    suppress wsimport output
  -s             specify where to place generated source files
  -target          generate code as per the given JAXWS spec version
                            Defaults to 2.2, Accepted values are 2.0, 2.1 and 2.2
                            e.g. 2.0 will generate compliant code for JAXWS 2.0 spec
  -verbose                  output messages about what the compiler is doing
  -version                  print version information
  -wsdllocation   @WebServiceClient.wsdlLocation value
  -clientjar       Creates the jar file of the generated artifacts along with the
                            WSDL metadata required for invoking the web service.

Extensions:
  -XadditionalHeaders              map headers not bound to request or response message to
                                   Java method parameters
  -Xauthfile                       file to carry authorization information in the format
                                   http://username:[email protected]/stock?wsdl
  -Xdebug                          print debug information
  -Xno-addressing-databinding      enable binding of W3C EndpointReferenceType to Java
  -Xnocompile                      do not compile generated Java files
  -XdisableSSLHostnameVerification disable the SSL Hostname verification while fetching
                                   wsdls

Examples:
  wsimport stock.wsdl -b stock.xml -b stock.xjb
  wsimport -d generated http://example.org/stock?wsdl

具体示例如下：

 

1.对外暴露的接口

    public interface TestWebService {  
      
        public String echo();  
    }  

2.服务器端的实现类，并通过@WebService来指定对外提供服务的服务名称，客户端生成的类目和包名

 

    import javax.jws.WebService;  
    import javax.xml.ws.Endpoint;  
      
      
    @WebService(name="MyTestWS",serviceName="MyWebService",targetNamespace="http://localhost/client")  
    public class WebServiceImpl implements TestWebService{  
      
        @Override  
        public String echo() {  
            return "webservice return msg";  
        }  
          
        public static void main(String[] args) {  
            Endpoint.publish("http://localhost:8080/MyWebService", new WebServiceImpl());  
        }  
    }  

 

3.然后运行服务器的WebServiceImpl的main函数，暴露服务并将服务注册到一个http服务地址上，客户端通过jdk的bin下面的wsimport命令来获取服务器的wsdl文件并生成客户端的stub类信息

    wsimport -keep http://localhost:8080/MyWebService?wsdl  

4.然后在你的路径上就会生成下面几个类

5.然后我们编写客户端的调用代码

import localhost.client.MyWebService;  
  
  
  
public class WebServiceClient {  
  
    public static void main(String[] args) {  
        MyWebService myWebService = new MyWebService();  
        System.out.println(myWebService.getMyTestWSPort().echo());  
    }  
}  

 

6.执行客户端的调用代码，输出如下：

7.我们看下最终生成客户端服务调用的类内容

package localhost.client;  
  
import java.net.MalformedURLException;  
import java.net.URL;  
import javax.xml.namespace.QName;  
import javax.xml.ws.Service;  
import javax.xml.ws.WebEndpoint;  
import javax.xml.ws.WebServiceClient;  
  
  
/** 
 * This class was generated by the JAXWS SI. 
 * JAX-WS RI 2.0_02-b08-fcs 
 * Generated source version: 2.0 
 *  
 */  
@WebServiceClient(name = "MyWebService", targetNamespace = "http://localhost/client", wsdlLocation = "http://localhost:8080/MyWebService?wsdl")  
public class MyWebService  
    extends Service  
{  
  
    private final static URL MYWEBSERVICE_WSDL_LOCATION;  
  
    static {  
        URL url = null;  
        try {  
            url = new URL("http://localhost:8080/MyWebService?wsdl");  
        } catch (MalformedURLException e) {  
            e.printStackTrace();  
        }  
        MYWEBSERVICE_WSDL_LOCATION = url;  
    }  
  
    public MyWebService(URL wsdlLocation, QName serviceName) {  
        super(wsdlLocation, serviceName);  
    }  
  
    public MyWebService() {  
        super(MYWEBSERVICE_WSDL_LOCATION, new QName("http://localhost/client", "MyWebService"));  
    }  
  
    /** 
     *  
     * @return 
     *     returns MyTestWS 
     */  
    @WebEndpoint(name = "MyTestWSPort")  
    public MyTestWS getMyTestWSPort() {  
        return (MyTestWS)super.getPort(new QName("http://localhost/client", "MyTestWSPort"), MyTestWS.class);  
    }  
  
}