>我正在使用JAXB Unmarshaller将XML字符串转换为Java对象结构(使用Java 7;Java 8目前不是一个选项(。不过,我在对象列表方面遇到了问题。(对于包含的所有代码,我提前道歉。这是输入 XML 字符串:
<claimImportCompositeDTO>
<claimId>900</claimId>
<claimNumber>AT0000000000018</claimNumber>
<claimDTO>
<recordId>900</recordId>
<version>1</version>
<clmAddress>
<recordId>900</recordId>
<version>0</version>
</clmAddress>
<claimStatus>
<expired class="list">
<claimStatusDTO>
<recordId>900</recordId>
<version>1</version>
</claimStatusDTO>
<claimStatusDTO>
<recordId>910</recordId>
<version>2</version>
</claimStatusDTO>
</expired>
<statusCompleteWorkItemFlag>false</statusCompleteWorkItemFlag>
</claimStatus>
</claimDTO>
<notes class="list">
<notepadDTO>
<recordId>3503</recordId>
<version>0</version>
<notepadText class="list">
<notepadTextDTO>
<recordId>3503</recordId>
<version>0</version>
</notepadTextDTO>
<notepadTextDTO>
<recordId>3504</recordId>
<version>0</version>
</notepadTextDTO>
</notepadText>
</notepadDTO>
</notes>
</claimImportCompositeDTO>
这是各种对象的定义:
import java.util.List;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement
public class ClaimImportCompositeDTO {
private String _claimId;
private String _claimNumber;
private ClaimDTO _claimDTO;
private List<NotepadDTO> _notes;
public String getClaimId() {
return _claimId;
}
public String getClaimNumber() {
return _claimNumber;
}
public ClaimDTO getClaimDTO() {
return _claimDTO;
}
public List<NotepadDTO> getNotes() {
return _notes;
}
public void setClaimId(String claimId) {
this._claimId = claimId;
}
public void setClaimNumber(String claimNumber) {
this._claimNumber = claimNumber;
}
public void setClaimDTO(ClaimDTO claimDTO) {
this._claimDTO = claimDTO;
}
public void setNotes(List<NotepadDTO> notes) {
this._notes = notes;
}
}
public class ClaimDTO {
private String _recordId;
private String _version;
private ClmAddress _clmAddress;
private ClaimStatus _claimStatus;
public String getRecordId() {
return _recordId;
}
public String getVersion() {
return _version;
}
public ClmAddress getClmAddress() {
return _clmAddress;
}
public ClaimStatus getClaimStatus() {
return _claimStatus;
}
public void setRecordId(String recordId) {
this._recordId = recordId;
}
public void setVersion(String version) {
this._version = version;
}
public void setClmAddress(ClmAddress clmAddress) {
this._clmAddress = clmAddress;
}
public void setClaimStatus(ClaimStatus claimStatus) {
this._claimStatus = claimStatus;
}
}
public class ClmAddress {
private String _recordId;
private String _version;
public String getRecordId() {
return _recordId;
}
public String getVersion() {
return _version;
}
public void setRecordId(String recordId) {
this._recordId = recordId;
}
public void setVersion(String version) {
this._version = version;
}
}
import java.util.List;
public class ClaimStatus {
private List<ClaimStatusDTO> _expired;
private boolean _statusCompleteWorkItemFlag;
public List<ClaimStatusDTO> getExpired() {
return _expired;
}
public boolean isStatusCompleteWorkItemFlag() {
return _statusCompleteWorkItemFlag;
}
public void setExpired(List<ClaimStatusDTO> expired) {
this._expired = expired;
}
public void setStatusCompleteWorkItemFlag(boolean statusCompleteWorkItemFlag) {
this._statusCompleteWorkItemFlag = statusCompleteWorkItemFlag;
}
}
public class ClaimStatusDTO {
private String _recordId;
private String _version;
public String getRecordId() {
return _recordId;
}
public String getVersion() {
return _version;
}
public void setRecordId(String recordId) {
this._recordId = recordId;
}
public void setVersion(String version) {
this._version = version;
}
}
import java.util.List;
public class NotepadDTO {
private String _recordId;
private String _version;
private List<NotepadTextDTO> _notepadText;
public List<NotepadTextDTO> getNotepadText() {
return _notepadText;
}
public String getRecordId() {
return _recordId;
}
public String getVersion() {
return _version;
}
public void setNotepadText(List<NotepadTextDTO> notepadText) {
this._notepadText = notepadText;
}
public void setRecordId(String recordId) {
this._recordId = recordId;
}
public void setVersion(String version) {
this._version = version;
}
}
public class NotepadTextDTO {
private String _recordId;
private String _version;
public String getRecordId() {
return _recordId;
}
public String getVersion() {
return _version;
}
public void setRecordId(String recordId) {
this._recordId = recordId;
}
public void setVersion(String version) {
this._version = version;
}
}
这是输出:
<claimImportCompositeDTO>
<claimId>900</claimId>
<claimNumber>AT0000000000018</claimNumber>
<claimDTO>
<recordId>900</recordId>
<version>1</version>
<clmAddress>
<recordId>900</recordId>
<version>0</version>
</clmAddress>
<claimStatus>
<expired class="list">
<claimStatusDTO>
<recordId>null</recordId>
<version>null</version>
</claimStatusDTO>
</expired>
<statusCompleteWorkItemFlag>false</statusCompleteWorkItemFlag>
</claimStatus>
</claimDTO>
<notes class="list">
<notepadDTO>
<recordId>null</recordId>
<version>null</version>
<notepadText class="list"/>
</notepadDTO>
</notes>
</claimImportCompositeDTO>
当我运行解组器时,非列表数据被正确读取,但列表中的任何内容都被跳过。好吧,创建一个对象(无论列表中有多少个(,并且所有字段都是空的(即,claimStatus -> 过期列表或注释列表(。
我希望我错过了一些相当基本的东西,但我无法找到那可能是什么。有什么想法吗?
问题是提供的 xml 与您的 POJO 的结构不对应。按照现有的设置和编码风格,修复它的一种简单方法是在作为项目列表的字段上添加@XmlElementWrapper并更改其名称。您需要将以下 3 个类更改为它们在下面的外观,它将起作用:
@XmlRootElement
@XmlAccessorType(XmlAccessType.PROPERTY)
public class ClaimImportCompositeDTO {
private String _claimId;
private String _claimNumber;
private ClaimDTO _claimDTO;
private List<NotepadDTO> _notepadDTO;
public String getClaimId() {
return _claimId;
}
public String getClaimNumber() {
return _claimNumber;
}
public ClaimDTO getClaimDTO() {
return _claimDTO;
}
@XmlElementWrapper(name = "notes")
public List<NotepadDTO> getNotepadDTO() {
return _notepadDTO;
}
public void setClaimId(String claimId) {
this._claimId = claimId;
}
public void setClaimNumber(String claimNumber) {
this._claimNumber = claimNumber;
}
public void setClaimDTO(ClaimDTO claimDTO) {
this._claimDTO = claimDTO;
}
public void setNotepadDTO(List<NotepadDTO> notes) {
this._notepadDTO = notes;
}
}
声明状态类为:
@XmlAccessorType(XmlAccessType.PROPERTY)
public class ClaimStatus {
private List<ClaimStatusDTO> _claimStatusDTO;
private boolean _statusCompleteWorkItemFlag;
@XmlElementWrapper(name = "expired")
public List<ClaimStatusDTO> getClaimStatusDTO() {
return _claimStatusDTO;
}
public void setClaimStatusDTO(List<ClaimStatusDTO> claimStatusDto) {
this._claimStatusDTO = claimStatusDto;
}
public boolean isStatusCompleteWorkItemFlag() {
return _statusCompleteWorkItemFlag;
}
public void setStatusCompleteWorkItemFlag(boolean statusCompleteWorkItemFlag) {
this._statusCompleteWorkItemFlag = statusCompleteWorkItemFlag;
}
}
和记事本DTO:
@XmlAccessorType(XmlAccessType.PROPERTY)
public class NotepadDTO {
private String _recordId;
private String _version;
private List<NotepadTextDTO> _notepadTextDTO;
@XmlElementWrapper(name = "notepadText")
public List<NotepadTextDTO> getNotepadTextDTO() {
return _notepadTextDTO;
}
public String getRecordId() {
return _recordId;
}
public String getVersion() {
return _version;
}
public void setNotepadTextDTO(List<NotepadTextDTO> notepadText) {
this._notepadTextDTO = notepadText;
}
public void setRecordId(String recordId) {
this._recordId = recordId;
}
public void setVersion(String version) {
this._version = version;
}
}
列表中的@XmlElement注释。像这样的东西。
@XmlElement(name = "notepadDTO")
private List<NotepadDTO> _notes;
这是我使用的教程:https://howtodoinjava.com/jaxb/jaxb-exmaple-marshalling-and-unmarshalling-list-or-set-of-objects/