全球观点：Xml转Java实体类对象 xml转Javabena 对象且多级嵌套复杂嵌套

(资料图片)

最近在做企微开发，遇到了一个比较复杂的xml然后要去我将xml转成实体类xml如下

 1403610513create_user11380000000011        
01<![CDATA[企业微信]]>

为了看起来更加清晰我将这个xml转JSON 的放在下面

{  "xml": {    "ToUserName": "toUser",    "FromUserName": "sys",    "CreateTime": "1403610513",    "MsgType": "event",    "Event": "change_contact",    "ChangeType": "create_user",    "UserID": "zhangsan",    "Name": "张三",    "Department": "1,2,3",    "MainDepartment": "1",    "IsLeaderInDept": "1,0,0",    "DirectLeader": "lisi,wangwu",    "Position": "产品经理",    "Mobile": "13800000000",    "Gender": "1",    "Email": "zhangsan@gzdev.com",    "BizMail": "zhangsan@qyycs2.wecom.work",    "Status": "1",    "Avatar": "http://wx.qlogo.cn/mmopen/ajNVd",    "Alias": "zhangsan",    "Telephone": "020-123456",    "Address": "广州市",    "ExtAttr": {      "Item": [        {          "Name": "爱好",          "Type": "0",          "Text": {            "Value": "旅游"          }        },        {          "Name": "卡号",          "Type": "1",          "Web": {            "Title": "企业微信",            "Url": "https://work.weixin.qq.com"          }        }      ]    }  }}

由此我们发现企微回调的这个xml的层级比较复杂那接下来我们将正式开始转Javabena对象

引入依赖

            javax.xml.bind            jaxb-api                            com.sun.xml.bind            jaxb-core            2.3.0                            com.sun.xml.bind            jaxb-impl            2.3.0                            org.glassfish.jaxb            jaxb-runtime            2.3.0                            javax.activation            activation            1.1.1

根据映射关系建立实体类并添加JAXB注解

@XmlRootElement。这是在JAXB中使用的Object必须有的注解。它定义了XML内容的根元素。
@XmlType。它将类映射到XML模式类型。我们可以用它来排列XML中的元素。
@XmlTransient。这将确保Object属性不被写入XML中。
@XmlAttribute: 这将创建Object属性作为一个属性。
@XmlElement(name = “ABC”): 这将创建名称为 "ABC "的元素。
@XmlElementWrapper：注解表示生成一个包装器元素（一般用于集合元素）。我们注意到企微回调的xml层级比较复杂那么这个实体类我们就要思考思考了我已经给你们建好了如下

import lombok.AllArgsConstructor;import lombok.Builder;import lombok.Data;import lombok.NoArgsConstructor;import javax.xml.bind.annotation.*;import java.util.List;@Builder@Data@AllArgsConstructor@NoArgsConstructor@XmlRootElement(name = "xml")@XmlAccessorType(XmlAccessType.FIELD)@XmlType(propOrder = {        "toUserName",        "fromUserName",        "createTime",        "msgType",        "event",        "changeType",        "userID",        "name",        "department",        "mainDepartment",        "isLeaderInDept",        "directLeader",        "position",        "mobile",        "gender",        "email",        "bizMail",        "status",        "avatar",        "alias",        "telephone",        "address",        "items",})public class MemberXml {    @XmlElement(name = "ToUserName",required = true)    private String toUserName;    @XmlElement(name = "FromUserName",required = true)    private String fromUserName;    @XmlElement(name = "CreateTime",required = true)    private String createTime;    @XmlElement(name = "MsgType",required = true)    private String msgType;    @XmlElement(name = "Event",required = true)    private String event;    @XmlElement(name = "ChangeType",required = true)    private String changeType;    @XmlElement(name = "UserID",required = true)    private String userID;    @XmlElement(name = "Name",required = true)    private String name;    @XmlElement(name = "Department",required = true)    private String department;    @XmlElement(name = "MainDepartment",required = true)    private String mainDepartment;    @XmlElement(name = "IsLeaderInDept",required = true)    private String isLeaderInDept;    @XmlElement(name = "DirectLeader",required = true)    private String directLeader;    @XmlElement(name = "Position",required = true)    private String position;    @XmlElement(name = "Mobile",required = true)    private String mobile;    @XmlElement(name = "Gender",required = true)    private String gender;    @XmlElement(name = "Email",required = true)    private String email;    @XmlElement(name = "BizMail",required = true)    private String bizMail;    @XmlElement(name = "Status",required = true)    private String status;    @XmlElement(name = "Avatar",required = true)    private String avatar;    @XmlElement(name = "Alias",required = true)    private String alias;    @XmlElement(name = "Telephone",required = true)    private String telephone;    @XmlElement(name = "Address",required = true)    private String address;    @XmlElementWrapper(name = "ExtAttr",required = true)    @XmlElement(name = "Item",required = true)    private List items;}

import lombok.AllArgsConstructor;import lombok.Builder;import lombok.Data;import lombok.NoArgsConstructor;import javax.xml.bind.annotation.*;@Builder@Data@AllArgsConstructor@NoArgsConstructor@XmlRootElement(name = "Item")@XmlAccessorType(XmlAccessType.FIELD)@XmlType(propOrder ={        "type",        "name",        "webValue",        "textValue"} )public class Item {    @XmlElement(name = "Type",required = true)    private String type;    @XmlElement(name = "Name",required = true)    private String name;    @XmlElement(name = "Text",required = true)    private TextValue textValue;    @XmlElement(name = "Web",required = true)    private WebValue webValue;}

import lombok.AllArgsConstructor;import lombok.Builder;import lombok.Data;import lombok.NoArgsConstructor;import javax.xml.bind.annotation.*;@Builder@Data@AllArgsConstructor@NoArgsConstructor@XmlAccessorType(XmlAccessType.FIELD)@XmlRootElement(name = "Text")@XmlType(propOrder ={        "value"} )public class TextValue {    @XmlElement(name = "Value",required = true)    private String value;}

import lombok.AllArgsConstructor;import lombok.Builder;import lombok.Data;import lombok.NoArgsConstructor;import javax.xml.bind.annotation.*;@Builder@Data@AllArgsConstructor@NoArgsConstructor@XmlRootElement(name = "Web")@XmlAccessorType(XmlAccessType.FIELD)@XmlType(propOrder ={        "title",        "url"} )public class WebValue {    @XmlElement(name = "Title",required = true)    private String title;    @XmlElement(name = "Url",required = true)    private String url;}

创建xml和实体互转的工具类

public class JaxbUtil { /** * JavaBean转换成xml *  * @param obj * @param encoding * @return */public static String convertToXml(Object obj, String encoding) {String result = null;try {JAXBContext context = JAXBContext.newInstance(obj.getClass());Marshaller marshaller = context.createMarshaller();marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);marshaller.setProperty(Marshaller.JAXB_ENCODING, encoding); StringWriter writer = new StringWriter();marshaller.marshal(obj, writer);result = writer.toString();} catch (Exception e) {e.printStackTrace();} return result;} /** * xml转换成JavaBean *  * @param xml * @param c * @return */@SuppressWarnings("unchecked")public static  T converyToJavaBean(String xml, Class c) {T t = null;try {JAXBContext context = JAXBContext.newInstance(c);Unmarshaller unmarshaller = context.createUnmarshaller();t = (T) unmarshaller.unmarshal(new StringReader(xml));} catch (Exception e) {e.printStackTrace();} return t;}}