调用webservice的方式解析

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Webservice

Webservice有三个基础标准:
1.WSDL: Web服务定义语言(Web Service Definition Language),用来定义服务接口。实际上,它能描述服务的两个不同方面:服务的签名(名字和参数),以及服务的绑定和部署细节(协议和位置)。
2.SOAP:简单对象访问协议(Simple Object Access Protocol),是定义Webservice的协议。HTTP是一个网络数据交互的底层协议,而SOAP是Web Service数据交换的专用协议。
3.UDDI:通用描述、发现与集成服务(Universal Description, Discovery and Integration),UDDI 是一种目录服务,企业可以使用它对 Web services 进行注册和搜索。
SOAP是协议,就像HTTP协议一样,一般框架都已经集成;
UDDI扮演者补充的角色,非必须,而且通常在实践中也不用。
WSDL是开发人员打交道最多的东西,也算是Webservice的核心了。

webservice:就是应用程序之间跨语言的调用

1.xml:通过xml格式说明调用的地址方法如何调用

2.wsdl: webservice description language web服务描述语言

3.soap simple object access protoacl (简单对象访问协议) 
    
客户端调用WebService的方式:

1.通过wximport生成代码

2.通过客户端编程方式

3.通过ajax调用方式

4.通过 URL Connection 方式调用

几种监听工具:

http watch

Web Service explorer

eclipse 自带工具   TCP/IP Monitor

服务端:

package com.webservcie;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】)

package com.wsclient;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.客户单编程方式(和第一种方式一样)
//文件名:HelloService.javaimport 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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