使用Jackson将json映射到java对象时聚合所有错误

Question

I'm trying to map a JSON string to a Java Object using Jackson ObjectMapper. If there is a mapping error, Jackson throws an exception when it first encounters the error. Is there a way to ask the ObjectMapper to map all the field while collecting the errors, and return all possible errors together?

The Java class

public class Test {
    public int field1;
    public int field2;
    public Test() {}
}

Mapper Code snippet

String json = "{\"field1\":field, \"field2\":anotherField}";
Test test = new ObjectMapper().readValue(json, Test.class);

The above code fails when it tries to parse 'field' to int, and doesn't check for remaining fields. However, the in the code, neither field1 nor field2 can be parsed. Is there a way to get all the potential errors at once, so I don't have to fix 1 error at a time?

Answer 1

Well, IMHO the problem does not have one simple solution. However particular solutions can be found.

If you want to ignore missing fields just use annotation

@JsonIgnoreProperties(ignoreUnknown = true)

Supporting unparsable data is more complicated. Please take a look on correct answer from this discussion enter link description here .

It however will not help if your JSON is syntactically wrong, for example if coma or colon are missing.