I am trying to map the below JSON to java POJO. Below is the JSON.
{
"customObject": {
"value": {
"config-1": {
"configurationName": {
"de": "Das ist ein Text",
"en": "Hospitalization Cover"
},
"key": "hospitalization-cover",
"mandatory": false,
"type": "options",
"options": {
"1Lakh": {
"label": "1 Lakh",
"priceType": "fixed",
"price": "200",
"default": "true"
},
"2Lakh": {
"label": "2 Lakh",
"priceType": "fixed",
"price": "400"
},
"3Lakh": {
"label": "3 Lakh",
"priceType": "fixed",
"price": "450"
},
"4Lakh": {
"label": "4 Lakh",
"priceType": "fixed",
"price": "500"
},
"5Lakh": {
"label": "5 Lakh",
"priceType": "fixed",
"price": "550"
},
"6Lakh": {
"label": "6 Lakh",
"priceType": "fixed",
"price": "650"
},
"7Lakh": {
"label": "7 Lakh",
"priceType": "fixed",
"price": "780"
}
}
},
"config-2": {
"configurationName": {
"de": "Das ist ein Text",
"en": "OPD Cover"
},
"key": "opd-cover",
"mandatory": false,
"type": "number",
"options": {
"OPDCover10k": {
"label": "10,000",
"priceType": "calculated",
"priceFactor": 0.2,
"default": "true"
},
"OPDCover15k": {
"label": "15,000",
"priceType": "calculated",
"priceFactor": 0.27
}
}
}
}
}
}
I have created below POJO to map it.
package com.edu.epam.graphQLSearch.custom.graphlQLqueries;
public class GqCustomObject {
private GqConfigCustomPOValue customObject;
public GqConfigCustomPOValue getCustomObject() {
return customObject;
}
public void setCustomObject(GqConfigCustomPOValue customObject) {
this.customObject = customObject;
}
}
Above POJO is working fine. Below is the second POJO.
package com.edu.epam.graphQLSearch.custom.graphlQLqueries;
public class GqConfigCustomPOValue {
public GqCustomPOCAList value;
public GqCustomPOCAList getValue() {
return value;
}
public void setValue(GqCustomPOCAList value) {
this.value = value;
}
}
Below is the third POJO
package com.edu.epam.graphQLSearch.custom.graphlQLqueries;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import java.util.List;
public class GqCustomPOCAList {
public List<GqCustomPOConfigAttributes> config;
public List<GqCustomPOConfigAttributes> getConfig() {
return config;
}
public void setConfig(List<GqCustomPOConfigAttributes> config) {
this.config = config;
}
}
Below is the fourth POJO
package com.edu.epam.graphQLSearch.custom.graphlQLqueries;
public class GqCustomPOConfigAttributes {
private String configurationName;
private String key;
private boolean mandatory;
private String type;
private Object options;
public String getConfigurationName() {
return configurationName;
}
public void setConfigurationName(String configurationName) {
this.configurationName = configurationName;
}
public String getKey() {
return key;
}
public void setKey(String key) {
this.key = key;
}
public boolean isMandatory() {
return mandatory;
}
public void setMandatory(boolean mandatory) {
this.mandatory = mandatory;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public Object getOptions() {
return options;
}
public void setOptions(Object options) {
this.options = options;
}
}
I am getting issue with POJO GqCustomPOCAList. Here, I am not able to define key "config-1" as it is mentioned in JSON.
When I define it as public List<GqCustomPOConfigAttributes> config; I get the error
Exception in thread "main" com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "config-1" (class com.edu.epam.graphQLSearch.custom.graphlQLqueries.GqCustomPOCAList), not marked as ignorable (one known property: "config"])
at [Source: (String)"{"customObject":{"value":{"config-1":{"configurationName":{"de":"Das ist ein Text","en":"Hospitalization Cover"},"key":"hospitalization-cover","mandatory":false,"type":"options","options":{"1Lakh":{"label":"1 Lakh","priceType":"fixed","price":"200","default":"true"},"2Lakh":{"label":"2 Lakh","priceType":"fixed","price":"400"},"3Lakh":{"label":"3 Lakh","priceType":"fixed","price":"450"},"4Lakh":{"label":"4 Lakh","priceType":"fixed","price":"500"},"5Lakh":{"label":"5 Lakh","priceType":"fixed","pri"[truncated 447 chars]; line: 1, column: 39] (through reference chain: com.edu.epam.graphQLSearch.custom.graphlQLqueries.GqCustomObject["customObject"]->com.edu.epam.graphQLSearch.custom.graphlQLqueries.GqConfigCustomPOValue["value"]->com.edu.epam.graphQLSearch.custom.graphlQLqueries.GqCustomPOCAList["config-1"])
at com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:61)
I am not able to define variable as below in java class
public List<GqCustomPOConfigAttributes> config-1;
Is there any better way to handle this?
When you have multiple unknown fields, the best way to parse them is with the @JsonAnySetter annotation. This annotation allows you to add an unknown key-value pair within a specific field of your choice (usually a Map).
Here is a working demo parsing your json at OneCompiler.
Here is the list of suggestions/corrections in your code:
class GqCustomPOCAList {
// 1. Do not use a List to parse an unknown number of configs,
// use instead the @JsonAnyGetter annotation and a Map to add every config with their name as the key (config-1, config-2, etc.)
public Map<String, GqCustomPOConfigAttributes> config;
// 2. initializing the Map so that it can be used by the method marked with @JsonAnySetter
public GqCustomPOCAList(){
config = new HashMap<>();
}
// 3. Method to add a generic config to the Map
@JsonAnySetter
public void addConfig(String cofigName, GqCustomPOConfigAttributes value){
config.put(cofigName, value);
}
//... other methods ...
}
class GqCustomPOConfigAttributes {
// 4. configurationName appears to be a Map<String, String> within your Json, not a String
private Map<String, String> configurationName;
private String key;
private boolean mandatory;
private String type;
// 5. Do not use a generic Object to represent your option, define a class Option with the possible fields.
// 6. Again, if the possible options are unknown, use a Map<String, Option> and the @JsonAnySetter annotation
private Map<String, Option> options;
// 7. initializing the Map so that it can be used by the method marked with @JsonAnySetter
public GqCustomPOConfigAttributes(){
configurationName = new HashMap<>();
}
// 8. Method to add a generic option to the Map
@JsonAnySetter
public void addOption(String optionName, Option option){
options.put(optionName, option);
}
// ... other methods ...
}
class Option {
private String label;
private String priceType;
private BigDecimal price;
private BigDecimal priceFactor;
// 9. the 'default' property must be renamed as default is a java keyword,
// use @JsonProperty to bind it to the field 'default' within the Json
@JsonProperty("default")
private boolean isDefault;
// ... other methods ...
}