Webservice是SOAP+XML，SOAP是基于Http的，Http底层是Socket，先回顾一下Socket：

Server：

public class Server {

    public static void main(String[] args) throws Exception {
    
        ServerSocket ss = new ServerSocket(6789);
        
        while(true){
            Socket s = ss.accept();
            InputStream is = s.getInputStream();
            BufferedReader br = new BufferedReader(new InputStreamReader(is));
            
            String str = br.readLine();
            System.err.println("收到客户端消息："+str);
            br.close();
            is.close();
            s.close();
        }
    }

}

Client：

public class Client {

    public static void main(String[] args) throws Exception {
    
        Socket s = new Socket("172.28.12.128",6789);
        
        OutputStream os = s.getOutputStream();
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(os));
        
        bw.write("吃饭了某");
        
        
        bw.close();
        os.close();
        s.close();
    }

}

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WebService用的是SOAP协议：

 

 

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使用jdk发布第一个WebService服务并调用

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1，发布代码，新建java项目WS_01

package com.lhy.ws;

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
public class HelloService {

    public String sayHello(String name){
        return "Hello "+name;
    }
    
    public String sayByeBye(String name){
        return "Bye bye "+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
         * publish 会新启动一个线程
         */
        Endpoint.publish("http://127.0.0.1:8889/hello", new HelloService());
        
        System.err.println("publish是新开的线程监听客户端请求，所以这里能够输出");
    }
}

 

2，查看WSDL：WSDL－说明服务在哪里，如何调用，其实就是一个使用说明书

浏览器输入 http://127.0.0.1:8889/hello?wsdl

 3，调用，wsimport命令生成客户端代码

 

这个命令为什么能执行？和java、javac一样，jdk/bin目录下有这个命令，只要配置了环境变量就能执行

 找一个目录E:\杂项\WebService\client_code 在这里生成客户端代码

-s . 指定代码生成在当前目录，也可以自定义包名，加上参数 -p  com.xxxx

生成的代码：

新建java项目，把客户端.java代码copy到项目

测试类APP：

package com.lhy.ws;

/**
 * 通过wsimport生成客户端代码调用WebService服务
 */
public class App {

    public static void main(String[] args) {
        
        /**
         * WSDL:
         * <service name="HelloServiceService">
         */
        HelloServiceService hss = new HelloServiceService();
        
        /**
         * WSDL:
         * <port name="HelloServicePort" binding="tns:HelloServicePortBinding">
         */
        HelloService hs = hss.getHelloServicePort();
        
        String result = hs.sayHello("NB");
        
        System.err.println(result);
        //com.sun.proxy.$Proxy32 JDK动态代理生成的代理类
        System.err.println(hs.getClass().getName());
        
    }
}

 http://www.webxml.com.cn 这个网站上有一些免费的服务可以调用，下边调用一下手机卡信息的服务

wsimport生成客户端代码

照着wsdl写代码：

public class MobileApp {
    
    public static void main(String[] args) {
        
        MobileCodeWS mobileCodeWS = new MobileCodeWS();
        
        MobileCodeWSSoap mobileCodeWSSoap = mobileCodeWS.getMobileCodeWSSoap();
        
        String result = mobileCodeWSSoap.getMobileCodeInfo("xxxxxxxx", "");
        
        System.err.println(result);
        
    }

}

 

 

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