Wie Objekt rekursive JSON mit JAXB

Question

Unten ist mein JSON zu analysieren, wie es jaxb mit analysieren, notieren Sie die Tiefe und Schlüssel Kategorien

{ 
    "categories":{ 
     "categoryHierarchy":[ 
     { 
      "hierarchy":{ 
       "SDG--1513417390":{ 
        "SD-1501363638":{ 
        "D-HS-MM4":{ 
         "CL-HS-MM4-DEFAULT":{ 
          "C-HS-MM4-MM0203":{ 

          } 
         } 
        } 
        } 
       } 
      }, 
      "precedence":1 
     } 
     ] 
    } 
} 

Answer 1

After trying multiple things I was able to parse the recursive category structure. 

    package com.example; 
import java.io.ByteArrayInputStream; 
import java.io.IOException; 
import java.io.InputStream; 

import com.fasterxml.jackson.databind.DeserializationFeature; 
import com.fasterxml.jackson.databind.ObjectMapper; 
import com.pearson.aem.aemcore.pim.dto.com.example.Example; 

class Parser{ 

    private transient static ObjectMapper jsonMapper; 

    public static void main (String [] args) throws IOException 
    { 
     jsonMapper = new ObjectMapper().configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); 

     String response = "{\"categoryHierarchy\":[{\"hierarchy\":{\"SDG--1513417390\":{\"SD-1501363638\":{\"D-HS-MM4\":{\"CL-HS-MM4-DEFAULT\":{\"C-HS-MM4-MM0203\":{}}}}}},\"precedence\":1}]}"; 
     InputStream stream = new ByteArrayInputStream(response.getBytes()); 

     Example ex = unmarshalJson(stream, Example.class); 

     System.out.println(ex.getCategoryHierarchy().get(0).getHierarchy1().getAdditionalProperties()); 
     //System.out.println(ex.getCategoryHierarchy().get(0).getHierarchy().getAdditionalProperties().get("SDG--1513417390").keySet.iterator().next()); 
    } 


    public static <T> T unmarshalJson(final InputStream result, final Class<T> declaredType) throws IOException 
    { 
     return (T) jsonMapper.readValue(result, declaredType); 
    } 

} 

---------------- 
package com.example; 
import java.util.List; 
import java.util.Map; 

import javax.xml.bind.annotation.XmlElement; 

import com.fasterxml.jackson.annotation.JsonInclude; 
import com.pearson.aem.aemcore.pim.dto.CategoryElementDTO; 

@JsonInclude(JsonInclude.Include.NON_NULL) 
public class Example 
{ 
    @XmlElement(
      name = "categoryHierarchy") 
    private List<CategoryHierarchy> categoryHierarchy; 

    @XmlElement(
      name = "relatedCategories") 
    private Map<String, CategoryElementDTO> relatedCategories; 

    public List<CategoryHierarchy> getCategoryHierarchy() 
    { 
     return categoryHierarchy; 
    } 

    public void setCategoryHierarchy(List<CategoryHierarchy> categoryHierarchy) 
    { 
     this.categoryHierarchy = categoryHierarchy; 
    } 

    public Map<String, CategoryElementDTO> getRelatedCategories() 
    { 
     return relatedCategories; 
    } 

    public void setRelatedCategories(Map<String, CategoryElementDTO> relatedCategories) 
    { 
     this.relatedCategories = relatedCategories; 
    } 
} 
------------ 
package com.example; 

public class CategoryHierarchy 
{ 
    private Hierarchy hierarchy; 
    private Integer precedence; 

    public Hierarchy getHierarchy() 
    { 
     return hierarchy; 
    } 
    public void setHierarchy(Hierarchy hierarchy) 
    { 
     this.hierarchy = hierarchy; 
    } 
    public Integer getPrecedence() 
    { 
     return precedence; 
    } 
    public void setPrecedence(Integer precedence) 
    { 
     this.precedence = precedence; 
    } 

} 

--------------- 
package com.example; 

import java.util.HashMap; 
import java.util.Map; 

import com.fasterxml.jackson.annotation.JsonAnyGetter; 
import com.fasterxml.jackson.annotation.JsonAnySetter; 
import com.fasterxml.jackson.annotation.JsonIgnore; 
import com.fasterxml.jackson.annotation.JsonInclude; 

@JsonInclude(JsonInclude.Include.NON_NULL) 
public class Hierarchy 
{ 
    @JsonIgnore 
    private Map<String, Object> additionalProperties = new HashMap<String, Object>(); 

    @JsonAnyGetter 
    public Map<String, Object> getAdditionalProperties() 
    { 
     return this.additionalProperties; 
    } 

    @JsonAnySetter 
    public void setAdditionalProperty(String name, Object value) 
    { 
     this.additionalProperties.put(name, value); 
    } 
} 

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