Question

我已阅读JSONMappingException for External Object，JSONMappingException for Class但无法找到ObjectNode课程的解决方案。

阅读JSONMappingException for External Object 我知道你必须在mapper中注册Object但我没有创建任何ObjectMapper类，因为我正在调用web服务

mapper.registerModule(new GeoModule());

我正在尝试调用包含ReportQueryData.java（com.fasterxml.jackson.databind.node.ObjectNode）实例变量的My POJO（ObjectNode）的Web服务。

ReportQueryData.java

import com.fasterxml.jackson.databind.node.ObjectNode;

public class ReportQueryData {
    private ObjectNode parentsData;

    public ObjectNode getParentsData() {
        return parentsData;
    }

    public void setParentsData(ObjectNode parentsData) {
        this.parentsData = parentsData;
    }
}

现在我在请求中调用包含ReportQueryData的Web服务，我面临异常

org.codehaus.jackson.map.JsonMappingException: No suitable constructor found for type [simple type, class com.fasterxml.jackson.databind.node.ObjectNode]: can not instantiate from JSON object (need to add/enable type information?)
[INFO] [talledLocalContainer]  at [Source: org.apache.catalina.connector.CoyoteInputStream@3da45801; line: 1, column: 155] (through reference chain: com.atlassian.qtm.model.ReportQueryData["parentsData"])
[INFO] [talledLocalContainer]   at org.codehaus.jackson.map.JsonMappingException.from(JsonMappingException.java:163)
[INFO] [talledLocalContainer]   at org.codehaus.jackson.map.deser.BeanDeserializer.deserializeFromObjectUsingNonDefault(BeanDeserializer.java:740)
[INFO] [talledLocalContainer]   at org.codehaus.jackson.map.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:683)

Answer 1

您必须为此类编写默认构造函数，如此

 class A{

    A(String s){

    }
}

class B extends A{

    B(){
        super("str");
    }
}

编辑：尝试将该课程包装在您的课程中并使用您的课程。

m[eval(parse(text=query))]

#   Hugo_Symbol Variant_Classification Variant_Type Tumor_Sample_Barcode
#1:      ABCA10            Splice_Site          SNP         TCGA.AB.2988
#2:        ADSS            Splice_Site          SNP         TCGA.AB.2912

JsonMappingException：找不到类型[simple type，class com.fasterxml.jackson.databind.node.ObjectNode]的合适构造函数

1 个答案: