鉴于java11不再支持webservice肥皂，我试图使用springboot使用肥皂服务。我试图按照这个链接的教程“https://spring.io/guides/gs/consuming-web-service/”。然而，我不是调用本地服务，而是调用一个wsdl为http://webservice.correios.com.br/service/rastro/Rastro.wsdl.的邮政服务。从这个wsdl maven正在生成类：BuscaEventos将是请求类，BuscaEventosResponse将是响应类。使用上面传递的wsdl，我能够通过soapUi生成一个调用，传递我在代码中使用的相同调用参数。然而，对于springboot，我在BuscaCliente类的最后一个命令中得到以下错误：

Caused by: org.springframework.oxm.MarshallingFailureException: JAXB marshalling exception; nested 
exception is javax.xml.bind.MarshalException
- with linked exception:
[com.sun.istack.SAXException2: it is not possible to do marshalling of the type 
"com.example.spring.soap.schemas.BuscaEventos" as an element because it was not found in a annotation @XmlRootElement]

有趣的是，我不能把@XmlRootElement注释放在BuscaEventos类中，甚至因为它是由maven生成的。并且在教程中，不需要做任何进一步的步骤，或者修改生成的类。

除了教程之外，我唯一要做的就是将“schemas”文件夹（maven创建类的文件夹）设置为源文件夹。

这些是我的课程：

@SpringBootApplication
public class SoapApplication {

    public static void main(String[] args) {
        SpringApplication.run(SoapApplication.class, args);
    }

    @Bean
    CommandLineRunner lookup(BuscaCliente cliente) {
        return args -> {
            BuscaEventosResponse response = cliente.getBusca();
            System.out.println(response.getReturn().toString());
        };
    }
}

////////

@Configuration
public class BuscaConfig {

@Bean
public Jaxb2Marshaller marshaller() {
    Jaxb2Marshaller marshaller = new Jaxb2Marshaller();
    // this package must match the package in the <generatePackage> specified in
    // pom.xml
    marshaller.setContextPath("com.example.spring.soap.schemas");
    return marshaller;
}

@Bean
public BuscaCliente buscaCliente(Jaxb2Marshaller marshaller) {
    BuscaCliente client = new BuscaCliente();
    client.setDefaultUri("http://webservice.correios.com.br/service/rastro/Rastro");
    client.setMarshaller(marshaller);
    client.setUnmarshaller(marshaller);
    return client;

}

/////

public class BuscaCliente extends WebServiceGatewaySupport {

public BuscaEventosResponse getBusca() {
    BuscaEventos request = new BuscaEventos();
    request.setUsuario("ECT");
    request.setSenha("SRO");
    request.setTipo("1");
    request.setResultado("T");
    request.setLingua("101");
    request.setObjetos("PY150825065BR");

    System.out.println("Buscando objeto: " + request.getObjetos());


    BuscaEventosResponse response = (BuscaEventosResponse) getWebServiceTemplate()
            .marshalSendAndReceive("http://webservice.correios.com.br/service/rastro/Rastro", request, 
                    new SoapActionCallback(""));
    return response;

}

////这些是mavem从wsdl////生成的类

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "buscaEventosResponse", propOrder = {
"_return"
})
public class BuscaEventosResponse {

@XmlElement(name = "return")
protected Sroxml _return;

/**
 * Obtém o valor da propriedade return.
 * 
 * @return
 *     possible object is
 *     {@link Sroxml }
 *     
 */
public Sroxml getReturn() {
    return _return;
}

/**
 * Define o valor da propriedade return.
 * 
 * @param value
 *     allowed object is
 *     {@link Sroxml }
 *     
 */
public void setReturn(Sroxml value) {
    this._return = value;
}

//////

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "buscaEventos", propOrder = {
"usuario",
"senha",
"tipo",
"resultado",
"lingua",
"objetos"
})
public class BuscaEventos {

protected String usuario;
protected String senha;
protected String tipo;
protected String resultado;
protected String lingua;
protected String objetos;

/**
 * Obtém o valor da propriedade usuario.
 * 
 * @return
 *     possible object is
 *     {@link String }
 *     
 */
public String getUsuario() {
    return usuario;
}

/**
 * Define o valor da propriedade usuario.
 * 
 * @param value
 *     allowed object is
 *     {@link String }
 *     
 */
public void setUsuario(String value) {
    this.usuario = value;
}

/**
 * Obtém o valor da propriedade senha.
 * 
 * @return
 *     possible object is
 *     {@link String }
 *     
 */
public String getSenha() {
    return senha;
}

/**
 * Define o valor da propriedade senha.
 * 
 * @param value
 *     allowed object is
 *     {@link String }
 *     
 */
public void setSenha(String value) {
    this.senha = value;
}

/**
 * Obtém o valor da propriedade tipo.
 * 
 * @return
 *     possible object is
 *     {@link String }
 *     
 */
public String getTipo() {
    return tipo;
}

/**
 * Define o valor da propriedade tipo.
 * 
 * @param value
 *     allowed object is
 *     {@link String }
 *     
 */
public void setTipo(String value) {
    this.tipo = value;
}

/**
 * Obtém o valor da propriedade resultado.
 * 
 * @return
 *     possible object is
 *     {@link String }
 *     
 */
public String getResultado() {
    return resultado;
}

/**
 * Define o valor da propriedade resultado.
 * 
 * @param value
 *     allowed object is
 *     {@link String }
 *     
 */
public void setResultado(String value) {
    this.resultado = value;
}

/**
 * Obtém o valor da propriedade lingua.
 * 
 * @return
 *     possible object is
 *     {@link String }
 *     
 */
public String getLingua() {
    return lingua;
}

/**
 * Define o valor da propriedade lingua.
 * 
 * @param value
 *     allowed object is
 *     {@link String }
 *     
 */
public void setLingua(String value) {
    this.lingua = value;
}

/**
 * Obtém o valor da propriedade objetos.
 * 
 * @return
 *     possible object is
 *     {@link String }
 *     
 */
public String getObjetos() {
    return objetos;
}

/**
 * Define o valor da propriedade objetos.
 * 
 * @param value
 *     allowed object is
 *     {@link String }
 *     
 */
public void setObjetos(String value) {
    this.objetos = value;
}

////这是pom. xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.3.0.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.example.sping</groupId>
<artifactId>soap</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>soap</name>
<description>Demo project for Spring Boot</description>

<properties>
    <java.version>11</java.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <!-- tag::dependency[] -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web-services</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <!-- end::dependency[] -->

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <groupId>org.junit.vintage</groupId>
                <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
</dependencies>

<!-- tag::profile[] -->
<profiles>
    <profile>
        <id>java11</id>
        <activation>
            <jdk>[11,)</jdk>
        </activation>

        <dependencies>
            <dependency>
                <groupId>org.glassfish.jaxb</groupId>
                <artifactId>jaxb-runtime</artifactId>
            </dependency>
        </dependencies>
    </profile>
</profiles>
<!-- end::profile[] -->

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
        <!-- tag::wsdl[] -->
        <plugin>
            <groupId>org.jvnet.jaxb2.maven2</groupId>
            <artifactId>maven-jaxb2-plugin</artifactId>
            <version>0.13.2</version>
            <executions>
                <execution>
                    <goals>
                        <goal>generate</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <schemaLanguage>WSDL</schemaLanguage>
                <generatePackage>com.example.spring.soap.schemas</generatePackage>
                <schemas>
                    <schema>
                        <url>http://webservice.correios.com.br/service/rastro/Rastro.wsdl</url>
                    </schema>
                </schemas>
            </configuration>
        </plugin>
        <!-- end::wsdl[] -->
    </plugins>
</build>
</project>