java - 可以阻止将属性转换为 xml 字符串的 xml 注释

Question

我在一个类中有一个属性“abc”。我想将此属性限制为转换为 XML 字符串格式。
是否有任何我可以在属性上使用的 XMl 注释，以避免将其转换为 XML 字符串？

请有人帮我解决这个问题。

Answer 1

可以使用@XmlTransient注解。
欲了解更多信息，请访问 @XmlTransient Sample
下面是在 JAXB 中避免 XML 转换中的“密码”属性的示例。因此它被注释为
@XmlTransient 注解

    import java.util.List;
    import javax.xml.bind.annotation.*;

   @XmlRootElement
   @XmlType(propOrder = { "phoneNumbers", "name"})
   public class Customer extends Person {

   private String password;
   private List<String> phoneNumbers;

   @XmlTransient
   public String getPassword() {
        return password;
   }

   public void setPassword(String password) {
       this.password = password;
   }

  @XmlElement(name = "phone-number")
  public List<String> getPhoneNumbers() {
    return phoneNumbers;
  }

  public void setPhoneNumbers(List<String> phoneNumbers) {
    this.phoneNumbers = phoneNumbers;
  }


 }   
 /* demo class*/ 
  public class Demo {

    public static void main(String[] args) throws Exception {
         JAXBContext jc = JAXBContext.newInstance(Customer.class);

         Unmarshaller unmarshaller = jc.createUnmarshaller();
         File xml = new File("input.xml");
        Customer customer = (Customer) unmarshaller.unmarshal(xml);

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(customer, System.out);
   }

  }  


  /*Generated xml doesn't have password tag */  
  /* <?xml version="1.0" encoding="UTF-8"?>  
     <customer>  
        <id>123</id>
        <phone-number>555-1111</phone-number>
        <phone-number>555-2222</phone-number>
        <name>Jane Doe</name>
     </customer>  
  */