JavawebSerivce的使用看完你就明白了

package com.ws.service;

public interface IWeatherSerice {
    
    public String queryWeather(String city);
}

package com.ws.service.impl;

import com.ws.service.IWeatherSerice;
import javax.jws.WebService;

@WebService  // 用该注解修改表示当前类是一个服务类 必须加上的，不然启动服务的时候会报错。
public class WeatherServiceImpl implements IWeatherSerice {

    @Override
    public String queryWeather(String city) {
        // 这里直接返回对应的城市和晴天！！！
        return city + "的天气为：晴天！";
    }
}

package com.ws.server;

import com.ws.service.impl.WeatherServiceImpl;
import javax.xml.ws.Endpoint;

public class WeatherServerDemo {

    public static void main(String[] args) {
        
        Endpoint.publish("http://localhost:8086/weatherServer", new WeatherServiceImpl());
        System.out.println("服务发布成功");
    }
}

package com.ws.client;

import com.ws.service.impl.WeatherServiceImpl;
import com.ws.service.impl.WeatherServiceImplService;

public class WeatherClientDemo1 {
    public static void main(String[] args) {
        // 1. 创建服务视图
        WeatherServiceImplService weatherServiceImplService = new WeatherServiceImplService();

        // 2. 得到服务实现类
        WeatherServiceImpl weatherService = weatherServiceImplService.getPort(WeatherServiceImpl.class);

        // 3. 调用接口的方法
        String result = weatherService.queryWeather("广州");

        // 4. 返回远程访问得到的结果 --> result = 广州的天气为：晴天！
        System.out.println("result = " + result);
    }
}

package com.ws.client;

import com.ws.service.impl.WeatherServiceImpl;
import com.ws.service.impl.WeatherServiceImplService;
import javax.xml.namespace.QName;
import javax.xml.ws.Service;
import java.net.MalformedURLException;
import java.net.URL;

public class WeatherClientDemo2 {
    public static void main(String[] args) throws Exception {
        // 1. 设置访问的服务端地址
        URL url = new URL("http://localhost:8086/weatherServer?wsdl");
        
         
        QName qName = new QName("http://impl.service.ws.com/", "WeatherServiceImplService");
        
        // 3. 生成服务视图
        Service service = Service.create(url, qName);
        
        // 4. 得到服务视图的实现类 --> WeatherServiceImpl
        WeatherServiceImpl weatherServiceImpl = service.getPort(WeatherServiceImpl.class);

        // 5. 调用接口方法得到结果！ --> result = 深圳的天气为：晴天！
        String result = weatherServiceImpl.queryWeather("深圳");
        System.out.println("result = " + result);
    }
}

<dependencies>
    <dependency>
        <groupId>org.dom4j</groupId>
        <artifactId>dom4j</artifactId>
        <version>2.1.1</version>
    </dependency>

    <dependency>
        <groupId>jaxen</groupId>
        <artifactId>jaxen</artifactId>
        <version>1.1.1</version>
    </dependency>
</dependencies>

package com.ws.client;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Node;

import java.io.DataOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Scanner;

public class WeatherClientDemo3 {
    public static void main(String[] args) throws Exception {
        // 1. 设置访问的服务端地址
        URL url = new URL("http://localhost:8086/weatherServer?wsdl");

        // 2.打开一个通向服务地址的连接
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        // 3.设置参数, --> POST必须大写,否则抛出异常
        connection.setRequestMethod("POST");
        // 这里是text/xml不是text/html
        connection.setRequestProperty("content-Type", "text/xml;charset=utf-8");

        // 4.设置输入输出，默认是false没有读写的权限
        connection.setDoOutput(true);
        connection.setDoInput(true);

        // 5.组织SOAP数据，发送请求
        String soapXml = getXmlString("佛山");
        System.out.println("soapXml = " + soapXml);

        // 6. 将数据写入到输出流中
        DataOutputStream dos = new DataOutputStream(connection.getOutputStream());
        dos.write(soapXml.getBytes("utf-8"));
        dos.flush();

        // 7. 判断远程访问是否成功，如果响应码为200即为成功
        if (connection.getResponseCode() == 200) {
            // 8. 获取相应的输入流，得到对应的结果
            InputStream ips = connection.getInputStream();
            Scanner scanner = new Scanner(ips);
            StringBuffer buffer = new StringBuffer();
            while (scanner.hasNextLine()) {
                buffer.append(scanner.nextLine());

            }
            scanner.close();
            // 得到为xml字符串
            System.out.println("buffer = " + buffer);
            // 9. 解析xml字符串获得返回的字符串
            String xml = parseXmlToString(buffer);
            System.out.println("xml = " + xml);

        }
    }

    private static String parseXmlToString(StringBuffer buffer) {
        try {
            // 得到对应的文档对象
            Document document = DocumentHelper.parseText(buffer.toString());
            // "//"从任意位置的节点上选择名称为 item 的节点。
            Node node = document.selectSingleNode("//return");
            return node.getText();

        } catch (DocumentException e) {
            e.printStackTrace();

        }
        return null;
    }

    private static String getXmlString(String string) {
        String xml = "<?xml version=\"1.0\" ?>"
                + "<S:Envelope xmlns:S=\"http://schemas.xmlsoap.org/soap/envelope/\">"
                + "<S:Body>" + "<ns2:queryWeather xmlns:ns2=\"http://impl.service.ws.com/\">"
                + "<arg0>" + string
                + "</arg0>" + "</ns2:queryWeather>" + "</S:Body>"
                + "</S:Envelope>\"";
        return xml;

    }
}