在Spring Boot中实现Web Service的服务端和客户端通常涉及到一些关键步骤。下面，我将介绍一个基本的实现流程，你可以根据具体需求进行调整和扩展。

服务端实现

1. 引入依赖

首先，在Spring Boot项目的pom.xml文件中添加所需的依赖，以支持Web Services。主要是Spring Web Services和JAXB。

<dependencies>  
    <!-- Spring Web Services -->  
    <dependency>  
        <groupId>org.springframework.boot</groupId>  
        <artifactId>spring-boot-starter-web-services</artifactId>  
    </dependency>  
    <!-- JAXB用于XML数据绑定 -->  
    <dependency>  
        <groupId>org.springframework.boot</groupId>  
        <artifactId>spring-boot-starter-jaxb</artifactId>  
    </dependency>  
</dependencies>  

2. 定义Web Service的XML Schema

创建一个XSD(XML Schema Definition)文件来定义Web Service的请求和响应格式。例如，创建一个person-details.xsd文件。

<?xml version="1.0" encoding="UTF-8"?>  
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://example.com/person" targetNamespace="http://example.com/person" elementFormDefault="qualified">  
    <xs:element name="getPersonRequest">  
        <xs:complexType>  
            <xs:sequence>  
                <xs:element name="personId" type="xs:int"/>  
            </xs:sequence>  
        </xs:complexType>  
    </xs:element>  
    <xs:element name="getPersonResponse">  
        <xs:complexType>  
            <xs:sequence>  
                <xs:element name="name" type="xs:string"/>  
                <xs:element name="age" type="xs:int"/>  
            </xs:sequence>  
        </xs:complexType>  
    </xs:element>  
</xs:schema>  

3. 生成Java类

使用maven-jaxb2-plugin插件根据XSD文件生成相应的Java类。

<build>  
    <plugins>  
        <plugin>  
            <groupId>org.codehaus.mojo</groupId>  
            <artifactId>jaxb2-maven-plugin</artifactId>  
            <version>2.5.0</version>  
            <executions>  
                <execution>  
                    <goals>  
                        <goal>generate</goal>  
                    </goals>  
                </execution>  
            </executions>  
            <configuration>  
                <schemaDirectory>${project.basedir}/src/main/resources/</schemaDirectory>  
                <outputDirectory>${project.basedir}/target/generated-sources/xjc</outputDirectory>  
            </configuration>  
        </plugin>  
    </plugins>  
</build>  

记得在src/main/resources/目录下放置你的XSD文件。

4. 创建Endpoints

在Spring Boot中，创建Endpoints来接收和处理Web Service请求。

import org.springframework.ws.server.endpoint.annotation.Endpoint;  
import org.springframework.ws.server.endpoint.annotation.PayloadRoot;  
import org.springframework.ws.server.endpoint.annotation.RequestPayload;  
import org.springframework.ws.server.endpoint.annotation.ResponsePayload;  
@Endpoint  
public class PersonEndpoint {  
    private static final String NAMESPACE_URI = "http://example.com/person";  
    @PayloadRoot(namespace = NAMESPACE_URI, localPart = "getPersonRequest")  
    @ResponsePayload  
    public GetPersonResponse getPerson(@RequestPayload GetPersonRequest request) {  
        GetPersonResponse response = new GetPersonResponse();  
        response.setName("John Doe");  // 示例数据  
        response.setAge(30);  
        return response;  
    }  
}  

5. 配置Web Service

在配置类中设置端点、WSDL位置等。

import org.springframework.boot.web.servlet.ServletRegistrationBean;  
import org.springframework.context.ApplicationContext;  
import org.springframework.context.annotation.Bean;  
import org.springframework.context.annotation.Configuration;  
import org.springframework.ws.config.annotation.EnableWs;  
import org.springframework.ws.config.annotation.WsConfigurerAdapter;  
import org.springframework.ws.transport.http.MessageDispatcherServlet;  
import org.springframework.xml.xsd.SimpleXsdSchema;  
import org.springframework.xml.xsd.XsdSchema;  
@EnableWs  
@Configuration  
public class WebServiceConfig extends WsConfigurerAdapter {  
    @Bean  
    public ServletRegistrationBean<MessageDispatcherServlet> messageDispatcherServlet(ApplicationContext applicationContext) {  
        MessageDispatcherServlet servlet = new MessageDispatcherServlet();  
        servlet.setApplicationContext(applicationContext);  
        servlet.setTransformWsdlLocations(true);  
        return new ServletRegistrationBean<>(servlet, "/ws/*");  
    }  
    @Bean(name = "persons")  
    public XsdSchema personSchema() {  
        return new SimpleXsdSchema(new ClassPathResource("person-details.xsd"));  
    }  
}  

客户端实现

1. 引入依赖

客户端需要Spring Web Services和JAXB的支持，与服务端类似。

2. 创建Web Service模板

import org.springframework.oxm.jaxb.Jaxb2Marshaller;  
import org.springframework.ws.client.core.WebServiceTemplate;  
@Configuration  
public class ClientConfig {  
    @Bean  
    public Jaxb2Marshaller marshaller() {  
        Jaxb2Marshaller marshaller = new Jaxb2Marshaller();  
        marshaller.setContextPath("com.example.person");  
        return marshaller;  
    }  
    @Bean  
    public WebServiceTemplate webServiceTemplate(Jaxb2Marshaller marshaller) {  
        WebServiceTemplate webServiceTemplate = new WebServiceTemplate();  
        webServiceTemplate.setMarshaller(marshaller);  
        webServiceTemplate.setUnmarshaller(marshaller);  
        return webServiceTemplate;  
    }  
}  

3. 调用Web Service

import org.springframework.ws.client.core.WebServiceTemplate;  
import org.springframework.beans.factory.annotation.Autowired;  
import org.springframework.stereotype.Service;  
@Service  
public class PersonClient {  
    @Autowired  
    private WebServiceTemplate webServiceTemplate;  
    public GetPersonResponse getPerson(int personId) {  
        GetPersonRequest request = new GetPersonRequest();  
        request.setPersonId(personId);  
        return (GetPersonResponse) webServiceTemplate.marshalSendAndReceive("http://localhost:8080/ws", request);  
    }  
}  

通过上述步骤，你可以在Spring Boot中实现一个简单的Web Service服务端和客户端。根据具体需要，你可以扩展请求、响应的数据结构，或添加安全性和错误处理等更多功能。