Java

【转】java 实现WebService 以及不同的调用方式

2017-06-18  本文已影响918人  王帅199207

webservice:
就是应用程序之间跨语言的调用
wwww.webxml.com.cn

  <Envelop>
     <body>
               //....
     </body>
  </Envelop>

operation name:服务提供的方法
静态方法不能发布为外部服务

运用jkd自带的代码生成访问服务器的客户端代码 E:/wsimort -s . http://test.cm/?wsdl

我们可以把webservice看做是web服务器上的一个应用,web服务器是webservice的一个容器

函数的参数在 http://test.cm/?xsd=1

JAX-WS是指 java api for xml -WebService

//测试 WebService服务的 explorer
Web Service Explorer 可以显示返回的xml格式

targetNamespace 默认为倒置的包名

客户端调用WebService的方式:

请求过程分析:

几种监听工具:


服务端代码:

import javax.jws.WebMethod;  
import javax.jws.WebParam;  
import javax.jws.WebResult;  
import javax.jws.WebService;  
import javax.xml.ws.Endpoint;  
  
/** 
 * WebService 
 * 将 Java 类标记为实现 Web Service,或者将 Java 接口标记为定义 Web Service 接口 
 */  
@WebService(serviceName="MyService",targetNamespace="http://www.baidu.com")  
public class HelloService {  
      
    @WebMethod(operationName="AliassayHello")  
    @WebResult(name="myReturn")  
    public String sayHello(@WebParam(name="name") String name){  
        return  "hello: " + name;  
    }  
      
    public String sayGoodbye(String name){  
      
        return  "goodbye: " + name;  
    }  
      
    @WebMethod(exclude=true)//当前方法不被发布出去  
    public String sayHello2(String name){  
        return "hello " + name;  
    }  
  
    public static void main(String[] args) {  
        /** 
         * 参数1:服务的发布地址 
         * 参数2:服务的实现者 
         *  Endpoint  会重新启动一个线程 
         */  
        Endpoint.publish("http://test.cm/", new HelloService());  
        System.out.println("Server ready...");  
    }  
}

1.客户端调用(wximport自动生成代码 【推荐】)

public class App {  
  
    /** 
     * 通过wsimport 解析wsdl生成客户端代码调用WebService服务 
     *  
     * @param args 
     *  
     */  
    public static void main(String[] args) {  
        // TODO Auto-generated method stub  
          
        /** 
         * <service name="MyService"> 
         * 获得服务名称 
         */  
        MyService mywebService = new MyService();  
          
        /** 
         * <port name="HelloServicePort" binding="tns:HelloServicePortBinding"> 
         */  
        HelloService hs = mywebService.getHelloServicePort();  
          
        /** 
         * 调用方法 
         */  
        System.out.println(hs.sayGoodbye("sjk"));  
          
        System.out.println(hs.aliassayHello("sjk"));  
          
          
          
    }  
  
}

2.通过ajax+js+xml调用

    <html>  
        <head>  
            <title>通过ajax调用WebService服务</title>  
            <script>  
                  
                var xhr = new ActiveXObject("Microsoft.XMLHTTP");  
                function sendMsg(){  
                    var name = document.getElementById('name').value;  
                    //服务的地址  
                    var wsUrl = 'http://192.168.1.100:6789/hello';  
                      
                    //请求体  
                    var soap = '<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:q0="http://ws.itcast.cn/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">' +   
                                         ' <soapenv:Body> <q0:sayHello><arg0>'+name+'</arg0>  </q0:sayHello> </soapenv:Body> </soapenv:Envelope>';  
                                           
                    //打开连接  
                    xhr.open('POST',wsUrl,true);  
                      
                    //重新设置请求头  
                    xhr.setRequestHeader("Content-Type","text/xml;charset=UTF-8");  
                      
                    //设置回调函数  
                    xhr.onreadystatechange = _back;  
                      
                    //发送请求  
                    xhr.send(soap);  
                }  
                  
                function _back(){  
                    if(xhr.readyState == 4){  
                        if(xhr.status == 200){  
                                //alert('调用Webservice成功了');  
                                var ret = xhr.responseXML;  
                                var msg = ret.getElementsByTagName('return')[0];  
                                document.getElementById('showInfo').innerHTML = msg.text;  
                                //alert(msg.text);  
                            }  
                    }  
                }  
            </script>  
        </head>  
        <body>  
                <input type="button" value="发送SOAP请求" onclick="sendMsg();">  
                <input type="text" id="name">  
                <div id="showInfo">  
                </div>  
        </body>  
    </html>  

3.URL Connection方式

    import java.io.InputStream;  
    import java.io.OutputStream;  
    import java.net.HttpURLConnection;  
    import java.net.URL;  
    /** 
     * 通过UrlConnection调用Webservice服务 
     * 
     */  
    public class App {  
      
        public static void main(String[] args) throws Exception {  
            //服务的地址  
            URL wsUrl = new URL("http://192.168.1.100:6789/hello");  
              
            HttpURLConnection conn = (HttpURLConnection) wsUrl.openConnection();  
              
            conn.setDoInput(true);  
            conn.setDoOutput(true);  
            conn.setRequestMethod("POST");  
            conn.setRequestProperty("Content-Type", "text/xml;charset=UTF-8");  
              
            OutputStream os = conn.getOutputStream();  
              
            //请求体  
            String soap = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:q0=\"http://ws.itcast.cn/\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">" +   
                          "<soapenv:Body> <q0:sayHello><arg0>aaa</arg0>  </q0:sayHello> </soapenv:Body> </soapenv:Envelope>";  
              
            os.write(soap.getBytes());  
              
            InputStream is = conn.getInputStream();  
              
            byte[] b = new byte[1024];  
            int len = 0;  
            String s = "";  
            while((len = is.read(b)) != -1){  
                String ss = new String(b,0,len,"UTF-8");  
                s += ss;  
            }  
            System.out.println(s);  
              
            is.close();  
            os.close();  
            conn.disconnect();  
        }  
    }  

4.客户端编程方式(和第一种方式一样)

    //文件名:HelloService.java  
      
    import javax.jws.WebMethod;  
    import javax.jws.WebParam;  
    import javax.jws.WebResult;  
    import javax.jws.WebService;  
    import javax.xml.bind.annotation.XmlSeeAlso;  
    import javax.xml.ws.RequestWrapper;  
    import javax.xml.ws.ResponseWrapper;  
      
      
    /** 
     * This class was generated by the JAX-WS RI. 
     * JAX-WS RI 2.1.6 in JDK 6 
     * Generated source version: 2.1 
     *  
     */  
    @WebService(name = "HelloService", targetNamespace = "http://ws.itcast.cn/")  
    @XmlSeeAlso({  
          
    })  
    public interface HelloService {  
      
      
        /** 
         *  
         * @param arg0 
         * @return 
         *     returns java.lang.String 
         */  
        @WebMethod  
        @WebResult(targetNamespace = "")  
        @RequestWrapper(localName = "sayHello", targetNamespace = "http://ws.itcast.cn/", className = "cn.itcast.ws.client.SayHello")  
        @ResponseWrapper(localName = "sayHelloResponse", targetNamespace = "http://ws.itcast.cn/", className = "cn.itcast.ws.client.SayHelloResponse")  
        public String sayHello(  
            @WebParam(name = "arg0", targetNamespace = "")  
            String arg0);  
      
    }  
    import java.net.MalformedURLException;  
    import java.net.URL;  
      
    import javax.xml.namespace.QName;  
    import javax.xml.ws.Service;  
      
    import cn.itcast.ws.wsimport.HelloService;  
      
    /** 
     * 通过客户端编程的方式调用Webservice服务 
     * 
     */  
    public class App {  
      
        public static void main(String[] args) throws Exception {  
            URL wsdlUrl = new URL("http://192.168.1.100:6789/hello?wsdl");  
            Service s = Service.create(wsdlUrl, new QName("http://ws.itcast.cn/","HelloServiceService"));  
            HelloService hs = s.getPort(new QName("http://ws.itcast.cn/","HelloServicePort"), HelloService.class);  
            String ret = hs.sayHello("zhangsan");  
            System.out.println(ret);  
        }  
    }  
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