Java JAXB解组异常：意外的元素WebServiceTemplate spring启动

我在一个spring boot项目中工作，我试图使用WebServiceTemplate发出SOAP请求，但出现以下错误：

javax.xml.bind.UnmarshalException: unexpected element (URI : "http://schemas.xmlsoap.org/soap/envelope/", local : "Fault"). the expected elements are <{urn:xtk:session}Logon>,<{urn:xtk:session}LogonResponse>

包裹信息类别：

@javax.xml.bind.annotation.XmlSchema(namespace = "urn:xtk:session", elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)
package com.api.soap;

我的配置类：

@Configuration
public class SoapConfig {
    
    @Bean
    public Jaxb2Marshaller marshaller() {
        
        Jaxb2Marshaller marshaller = new Jaxb2Marshaller();
        marshaller.setPackagesToScan(new String[]{
                 "com.api.soap"
        });
        
        return marshaller;  
    }
}

最后，这是我调用soap WS的方法：

Logon logonRequest=新登录（）

你知道我为什么会出现这个错误吗请：

javax.xml.bind.UnmarshalException: unexpected element (URI : "http://schemas.xmlsoap.org/soap/envelope/", local : "Fault"). the expected elements are <{urn:xtk:session}Logon>,<{urn:xtk:session}LogonResponse>

javax.xml.bind.UnmarshaleException:意外元素（URI:http://schemas.xmlsoap.org/soap/envelope/“，局部：“故障”）。预期的要素包括：，

致以最良好的祝愿

@Configuration
public class SoapConfig {
    
    @Bean
    public Jaxb2Marshaller marshaller() {
        
        Jaxb2Marshaller marshaller = new Jaxb2Marshaller();
        marshaller.setPackagesToScan(new String[]{
                 "com.api.soap"
        });
        
        return marshaller;  
    }
}

logonRequest.setSessiontoken("");
logonRequest.setStrLogin("myusername"); //
logonRequest.setStrPassword("mypassword");  //

webServiceTemplate = new WebServiceTemplate(marshaller);
LogonResponse logonResponse = (LogonResponse) webServiceTemplate.marshalSendAndReceive("http://ws-soap-serv.com",logonRequest);
    

javax.xml.bind.UnmarshalException: unexpected element (URI : "http://schemas.xmlsoap.org/soap/envelope/", local : "Fault"). the expected elements are <{urn:xtk:session}Logon>,<{urn:xtk:session}LogonResponse>