Jackson XML deserialization error: no String-argument constructor/factory method to deserialize from String value ('checka'), - jackson-databind

Question

I am trying to deserialize a simple xml with pojo but getting error as below:
Exception in thread "main" com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of classname (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('checka')
at [Source: (com.ctc.wstx.sr.ValidatingStreamReader); line: 3, column: 15] (through reference chain: classname["testData"]->java.util.ArrayList[0])
at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:63)
<tc>
<testData>
<post>checka</post>
<xtenantid>netwebshopa</xtenantid>
<jsonbody>Testa</jsonbody>
</testData>
<testData>
<post>check</post>
<xtenantid>netwebshop</xtenantid>
<jsonbody>Test</jsonbody>
</testData>
#JacksonXmlRootElement(localName = "tc")
public class TC {
private List<TestData> testData;
public List<TestData> getTestData() {
return testData;
}
public void setTestData(List<TestData> testData) {
this.testData = testData;
}
}
public class TestData {
private String post;
private String xtenantid;
private String jsonbody;
public String getPost() {
return post;
}
public void setPost(String post) {
this.post = post;
}
public String getXtenantid() {
return xtenantid;
}
public void setXtenantid(String xtenantid) {
this.xtenantid = xtenantid;
}
public String getJsonbody() {
return jsonbody;
}
public void setJsonbody(String jsonbody) {
this.jsonbody = jsonbody;
}
}

Answer 1

You need a constructor with all parameters:
public class TestData(String post, String xtenantid, String jsonbody) {
this.post= post;
this.xtenantid= xtenantid;
this.jsonbody= jsonbody;

Answer 2

If you try to deserialize the class. You get something like this.
<tc>
<testData>
<testData>
<post>checka2</post>
<xtenantid>netwebshopa2</xtenantid>
<jsonbody>Testa2</jsonbody>
</testData>
<testData>
<post>checka1</post>
<xtenantid>netwebshopa1</xtenantid>
<jsonbody>Testa1</jsonbody>
</testData>
</testData>
The TestData class is duplicated because jackson uses elementWrapper by default.
To remove it, you must use #JacksonXmlElementWrapper(useWrapping = false).
The result should look like this.
public class ParrentXml {
#JacksonXmlElementWrapper(useWrapping = false)
List<ChildXml> childxmls = new ArrayList<>();
public List<ChildXml> getChildxmls() {
return childxmls;
}
public void setChildxmls(List<ChildXml> childxmls) {
this.childxmls = childxmls;
}
}