Java 当存在XML注释而不是元素时,Jackson XML反序列化失败
我有以下XML:Java 当存在XML注释而不是元素时,Jackson XML反序列化失败,java,xml,jackson,jackson-dataformat-xml,Java,Xml,Jackson,Jackson Dataformat Xml,我有以下XML: <licenseSummary> <dependencies> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9
<licenseSummary>
<dependencies>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.4</version>
<licenses>
<license>
<name>The Apache Software License, Version 2.0</name>
<url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
<distribution>repo</distribution>
</license>
</licenses>
</dependency>
<dependency>
<groupId>somegroup</groupId>
<artifactId>someartifact</artifactId>
<version>2.43.0-SNAPSHOT</version>
<licenses>
<!--No license information available. -->
</licenses>
</dependency>
</dependencies>
</licenseSummary>
我尝试使用配置XMLMapper
,但这没有帮助:
ObjectMapper xmlMapper = new XmlMapper();
xmlMapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
以下是相关POJO的外观:
public class Dependency {
private String groupId;
private String artifactId;
private String version;
private List<License> licenses = new ArrayList<License>(1);
public String getGroupId() {
return groupId;
}
public void setGroupId(String groupId) {
this.groupId = groupId;
}
public String getArtifactId() {
return artifactId;
}
public void setArtifactId(String artifactId) {
this.artifactId = artifactId;
}
public String getVersion() {
return version;
}
public void setVersion(String version) {
this.version = version;
}
public List<License> getLicenses() {
return licenses;
}
public void setLicenses(List<License> licenses) {
this.licenses = licenses;
}
}
公共类依赖项{
私有字符串groupId;
私有字符串工件;
私有字符串版本;
私有列表许可证=新的ArrayList(1);
公共字符串getGroupId(){
返回groupId;
}
public void setGroupId(字符串groupId){
this.groupId=groupId;
}
公共字符串getArtifactId(){
返回工件;
}
public void setArtifactId(字符串artifactId){
this.artifactId=artifactId;
}
公共字符串getVersion(){
返回版本;
}
公共void setVersion(字符串版本){
this.version=版本;
}
公共列表getLicenses(){
归还许可证;
}
公共许可证(列出许可证){
this.licenses=许可证;
}
}
有人知道我怎么可以忽略这个评论吗。(顺便说一句:我无法删除XML文件中的注释)
jackson dataformat xml
Version 2.9.4我最终实现了一个反序列化ProblemHandler
,并将其注册到xmlMapper
,如下所示:
xmlMapper.addHandler(new LicenceDeserializationProblemHandler());
以下是处理程序:
import java.io.IOException;
import java.util.ArrayList;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.deser.DeserializationProblemHandler;
public class LicenceDeserializationProblemHandler extends DeserializationProblemHandler {
@Override
public Object handleUnexpectedToken(DeserializationContext ctxt, Class<?> targetType, JsonToken t, JsonParser p,
String failureMsg) throws IOException {
if(ArrayList.class.isAssignableFrom(targetType) &&
JsonToken.VALUE_STRING.equals(t)) {
// If there is no license a XML-Comment is in the licenses token.
return null;
}else {
return super.handleUnexpectedToken(ctxt, targetType, t, p, failureMsg);
}
}
}
import java.io.IOException;
导入java.util.ArrayList;
导入com.fasterxml.jackson.core.JsonParser;
导入com.fasterxml.jackson.core.JsonToken;
导入com.fasterxml.jackson.databind.DeserializationContext;
导入com.fasterxml.jackson.databind.deser.DeserializationProblemHandler;
公共类LicenceDeserializationProblemHandler扩展了DeserializationProblemHandler{
@凌驾
公共对象handleUnexpectedToken(反序列化上下文ctxt、类targetType、JsonToken t、JsonParser p、,
字符串失败(MSG)引发IOException{
if(ArrayList.class.isAssignableFrom(targetType)&&
JsonToken.VALUE_STRING.equals(t)){
//如果没有许可证,则许可证令牌中会有XML注释。
返回null;
}否则{
返回super.handleUnexpectedToken(ctxt、targetType、t、p、failureMsg);
}
}
}
import java.io.IOException;
import java.util.ArrayList;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.deser.DeserializationProblemHandler;
public class LicenceDeserializationProblemHandler extends DeserializationProblemHandler {
@Override
public Object handleUnexpectedToken(DeserializationContext ctxt, Class<?> targetType, JsonToken t, JsonParser p,
String failureMsg) throws IOException {
if(ArrayList.class.isAssignableFrom(targetType) &&
JsonToken.VALUE_STRING.equals(t)) {
// If there is no license a XML-Comment is in the licenses token.
return null;
}else {
return super.handleUnexpectedToken(ctxt, targetType, t, p, failureMsg);
}
}
}