Java groovy属性类的JAXB注释

按如下方式设置项目：

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlSeeAlso;

@XmlRootElement(name="employee")
@XmlSeeAlso([EmployeeDesiredSkill.class, EmployeeDesiredTool.class,  EmployeeAreaOfExpertise.class, Project.class, Education.class])
@XmlAccessorType(XmlAccessType.NONE)
class Employee implements Comparable
{       
static hasMany = [employeeDesiredSkills:EmployeeDesiredSkill]     
 @XmlElement
     String name
    @XmlElement
    List<EmployeeDesiredSkill> employeeDesiredSkills = new ArrayList<EmployeeDesiredSkill>();
}


import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;

@XmlAccessorType(XmlAccessType.NONE)
class EmployeeDesiredSkill implements Comparable
{

boolean _deleted
@XmlElement
Skill skill
static belongsTo = [employee:Employee, skill:Skill]
}

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;

@XmlAccessorType(XmlAccessType.FIELD)
class Skill implements Comparable
{
    static hasMany = [roleSkills:RoleSkill, employeeDesiredSkills:EmployeeDesiredSkill]

    boolean _deleted
static transients = ['_deleted']
    @XmlAttribute
    String name
}

            def employee = Employee.get(session.empid);
            for(esd in employee.getEmployeeDesiredSkills()){println "EmployeeDesiredSkill:" + esd}

我得到了所需技能的完整列表（其中5项），因此我知道这些值已经在数据库中了

---

在我看来，EmployeeDesiredSkill类似乎不知道该将技能返还给哪位员工，但我不确定这是否是正确的想法。我真的不想将belongsTo=Employee添加到我的技能类中，因为我希望其他员工也能使用这些技能

不确定这是否有帮助，但如果我直接用Java运行您的示例，一切正常：

员工：

import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name = "employee")
@XmlAccessorType(XmlAccessType.NONE)
class Employee {
    @XmlElement
    String name;

    @XmlElement
    List<EmployeeDesiredSkill> employeeDesiredSkills = new ArrayList<EmployeeDesiredSkill>();
}

技能

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;

@XmlAccessorType(XmlAccessType.NONE)
class EmployeeDesiredSkill {

    boolean _deleted;

    @XmlElement
    Skill skill;
}

导入javax.xml.bind.annotation.XmlAccessType； 导入javax.xml.bind.annotation.XmlAccessorType； 导入javax.xml.bind.annotation.XmlAttribute

@XmlAccessorType（XmlAccessType.FIELD） 课堂技能{

boolean _deleted;

@XmlAttribute
String name;

}

使用以下代码：

import java.io.File;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

public class Demo {

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

        Unmarshaller unmarshaller = jc.createUnmarshaller();
        Employee employee = (Employee) unmarshaller.unmarshal(new File("input.xml"));

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

    }
}

可以生成/使用以下XML：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<employee>
    <employeeDesiredSkills>
        <skill name="A">
            <_deleted>false</_deleted>
        </skill>
    </employeeDesiredSkills>
    <employeeDesiredSkills>
        <skill name="B">
            <_deleted>false</_deleted>
        </skill>
    </employeeDesiredSkills>
    <employeeDesiredSkills>
        <skill name="C">
            <_deleted>false</_deleted>
        </skill>
    </employeeDesiredSkills>
    <employeeDesiredSkills>
        <skill name="D">
            <_deleted>false</_deleted>
        </skill>
    </employeeDesiredSkills>
    <employeeDesiredSkills>
        <skill name="E">
            <_deleted>false</_deleted>
        </skill>
    </employeeDesiredSkills>
</employee>

假的
假的
假的
假的
假的

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<employee>
    <employeeDesiredSkills>
        <skill name="A">
            <_deleted>false</_deleted>
        </skill>
    </employeeDesiredSkills>
    <employeeDesiredSkills>
        <skill name="B">
            <_deleted>false</_deleted>
        </skill>
    </employeeDesiredSkills>
    <employeeDesiredSkills>
        <skill name="C">
            <_deleted>false</_deleted>
        </skill>
    </employeeDesiredSkills>
    <employeeDesiredSkills>
        <skill name="D">
            <_deleted>false</_deleted>
        </skill>
    </employeeDesiredSkills>
    <employeeDesiredSkills>
        <skill name="E">
            <_deleted>false</_deleted>
        </skill>
    </employeeDesiredSkills>
</employee>