mirror of
https://github.com/hyperledger/fabric-samples.git
synced 2026-06-26 11:35:10 +00:00
update java chaincode for JSON serialization determinism
Signed-off-by: fraVlaca <ocsenarf@outlook.com>
This commit is contained in:
Francesco Vlacancich
fraVlaca
parent
235df3271d
commit
fc250d3bd5
2 changed files with 61 additions and 155 deletions
|
|
@ -10,6 +10,8 @@ import java.util.TreeMap;
|
|||
import java.util.Map;
|
||||
import java.util.HashMap;
|
||||
|
||||
import com.fasterxml.jackson.core.JsonProcessingException;
|
||||
import java.io.IOException;
|
||||
|
||||
import org.hyperledger.fabric.contract.Context;
|
||||
import org.hyperledger.fabric.contract.ContractInterface;
|
||||
|
|
@ -23,10 +25,11 @@ import org.hyperledger.fabric.shim.ChaincodeException;
|
|||
import org.hyperledger.fabric.shim.ChaincodeStub;
|
||||
import org.hyperledger.fabric.shim.ledger.KeyValue;
|
||||
import org.hyperledger.fabric.shim.ledger.QueryResultsIterator;
|
||||
import com.fasterxml.jackson.core.type.TypeReference;
|
||||
|
||||
import com.fasterxml.jackson.databind.SerializationFeature;
|
||||
import com.fasterxml.jackson.databind.ObjectMapper;
|
||||
import com.google.gson.Gson;
|
||||
import com.owlike.genson.Genson;
|
||||
|
||||
@Contract(
|
||||
name = "basic",
|
||||
|
|
@ -44,8 +47,8 @@ import com.google.gson.Gson;
|
|||
@Default
|
||||
public final class AssetTransfer implements ContractInterface {
|
||||
|
||||
private Gson gson = new Gson();
|
||||
private ObjectMapper om = new ObjectMapper();
|
||||
private final Genson genson = new Genson();
|
||||
private ObjectMapper om = new ObjectMapper().configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);;
|
||||
|
||||
private enum AssetTransferErrors {
|
||||
ASSET_NOT_FOUND,
|
||||
|
|
@ -58,7 +61,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
* @param ctx the transaction context
|
||||
*/
|
||||
@Transaction(intent = Transaction.TYPE.SUBMIT)
|
||||
public void InitLedger(final Context ctx) {
|
||||
public void InitLedger(final Context ctx) throws JsonProcessingException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
|
||||
CreateAsset(ctx, "asset1", "blue", 5, "Tomoko", 300);
|
||||
|
|
@ -83,7 +86,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
*/
|
||||
@Transaction(intent = Transaction.TYPE.SUBMIT)
|
||||
public Asset CreateAsset(final Context ctx, final String assetID, final String color, final int size,
|
||||
final String owner, final int appraisedValue) {
|
||||
final String owner, final int appraisedValue) throws JsonProcessingException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
|
||||
if (AssetExists(ctx, assetID)) {
|
||||
|
|
@ -93,28 +96,10 @@ public final class AssetTransfer implements ContractInterface {
|
|||
}
|
||||
|
||||
Asset asset = new Asset(assetID, color, size, owner, appraisedValue);
|
||||
//deserializing your json into a sorted map, and then serialize the map to get the sorted-by-key json string.
|
||||
//TreeMap will enforce a sorting order for you, independent of what order they're supplied in
|
||||
String json = gson.toJson(asset);
|
||||
try {
|
||||
om.configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);
|
||||
Map<String, Object> map = om.readValue(json, HashMap.class);
|
||||
String sortedJson = om.writeValueAsString(map);
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
} catch (Exception e) {
|
||||
}
|
||||
/*String json = gson.toJson(asset);
|
||||
TreeMap<String, Object> map = gson.fromJson(json, TreeMap.class);
|
||||
String sortedJson = gson.toJson(map);
|
||||
stub.putStringState(assetID, sortedJson);*/
|
||||
|
||||
//could use JSON Object approach instead
|
||||
/*Map<String, String> sortedMap = gson.fromJson(json, TreeMap.class); //this will auto-sort by key alphabetically
|
||||
JSONObject sortedJSON = new JSONObject(); //recreate new JSON object for sorted result
|
||||
for (Map.Entry<String, String> entry : sortedMap.entrySet()) {
|
||||
sortedJSON.put(entry.getKey(), entry.getValue());
|
||||
}
|
||||
stub.putState(assetID, sortedJson); //wuold do it if possible to write JSONObject to stste */
|
||||
//Use a Jackson ObjectMapper to conver the Asset into string, sort it alphabetically and serialize it into a json string
|
||||
String sortedJson = om.writeValueAsString(asset);
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
|
||||
return asset;
|
||||
}
|
||||
|
|
@ -127,7 +112,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
* @return the asset found on the ledger if there was one
|
||||
*/
|
||||
@Transaction(intent = Transaction.TYPE.EVALUATE)
|
||||
public Asset ReadAsset(final Context ctx, final String assetID) {
|
||||
public Asset ReadAsset(final Context ctx, final String assetID) throws JsonProcessingException,IOException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
String assetJSON = stub.getStringState(assetID);
|
||||
|
||||
|
|
@ -137,7 +122,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_NOT_FOUND.toString());
|
||||
}
|
||||
|
||||
Asset asset = gson.fromJson(assetJSON, Asset.class);
|
||||
Asset asset = genson.deserialize(assetJSON, Asset.class);
|
||||
return asset;
|
||||
}
|
||||
|
||||
|
|
@ -154,7 +139,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
*/
|
||||
@Transaction(intent = Transaction.TYPE.SUBMIT)
|
||||
public Asset UpdateAsset(final Context ctx, final String assetID, final String color, final int size,
|
||||
final String owner, final int appraisedValue) {
|
||||
final String owner, final int appraisedValue) throws JsonProcessingException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
|
||||
if (!AssetExists(ctx, assetID)) {
|
||||
|
|
@ -164,26 +149,10 @@ public final class AssetTransfer implements ContractInterface {
|
|||
}
|
||||
|
||||
Asset newAsset = new Asset(assetID, color, size, owner, appraisedValue);
|
||||
String json = gson.toJson(newAsset);
|
||||
try {
|
||||
om.configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);
|
||||
Map<String, Object> map = om.readValue(json, HashMap.class);
|
||||
String sortedJson = om.writeValueAsString(map);//could also use gson instead
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
} catch (Exception e) {
|
||||
}
|
||||
/*String json = gson.toJson(asset);
|
||||
TreeMap<String, Object> map = gson.fromJson(json, TreeMap.class);
|
||||
String sortedJson = gson.toJson(map);
|
||||
stub.putStringState(assetID, sortedJson);*/
|
||||
|
||||
//could use JSON Object approach instead
|
||||
/*Map<String, String> sortedMap = gson.fromJson(json, TreeMap.class); //this will auto-sort by key alphabetically
|
||||
JSONObject sortedJSON = new JSONObject(); //recreate new JSON object for sorted result
|
||||
for (Map.Entry<String, String> entry : sortedMap.entrySet()) {
|
||||
sortedJSON.put(entry.getKey(), entry.getValue());
|
||||
}
|
||||
stub.putState(assetID, sortedJson); //wuold do it if possible to write JSONObject to stste */
|
||||
//Use a Jackson ObjectMapper to conver the Asset into string, sort it alphabetically and serialize it into a json string
|
||||
String sortedJson = om.writeValueAsString(newAsset);
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
|
||||
return newAsset;
|
||||
}
|
||||
|
|
@ -231,7 +200,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
* @return the updated asset
|
||||
*/
|
||||
@Transaction(intent = Transaction.TYPE.SUBMIT)
|
||||
public Asset TransferAsset(final Context ctx, final String assetID, final String newOwner) {
|
||||
public Asset TransferAsset(final Context ctx, final String assetID, final String newOwner) throws JsonProcessingException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
String assetJSON = stub.getStringState(assetID);
|
||||
|
||||
|
|
@ -241,29 +210,13 @@ public final class AssetTransfer implements ContractInterface {
|
|||
throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_NOT_FOUND.toString());
|
||||
}
|
||||
|
||||
Asset asset = gson.fromJson(assetJSON, Asset.class);
|
||||
|
||||
//Asset asset = gson.fromJson(assetJSON, Asset.class);
|
||||
Asset asset = genson.deserialize(assetJSON, Asset.class);
|
||||
Asset newAsset = new Asset(asset.getAssetID(), asset.getColor(), asset.getSize(), newOwner, asset.getAppraisedValue());
|
||||
String json = gson.toJson(newAsset);
|
||||
try {
|
||||
om.configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);
|
||||
Map<String, Object> map = om.readValue(json, HashMap.class);
|
||||
String sortedJson = om.writeValueAsString(map);
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
} catch (Exception e) {
|
||||
}
|
||||
/*String json = gson.toJson(asset);
|
||||
TreeMap<String, Object> map = gson.fromJson(json, TreeMap.class);
|
||||
String sortedJson = gson.toJson(map);
|
||||
stub.putStringState(assetID, sortedJson);*/
|
||||
|
||||
//could use JSON Object approach instead
|
||||
/*Map<String, String> sortedMap = gson.fromJson(json, TreeMap.class); //this will auto-sort by key alphabetically
|
||||
JSONObject sortedJSON = new JSONObject(); //recreate new JSON object for sorted result
|
||||
for (Map.Entry<String, String> entry : sortedMap.entrySet()) {
|
||||
sortedJSON.put(entry.getKey(), entry.getValue());
|
||||
}
|
||||
stub.putState(assetID, sortedJson); //wuold do it if possible to write JSONObject to stste */
|
||||
//Use a Jackson ObjectMapper to conver the Asset into string, sort it alphabetically and serialize it into a json string
|
||||
String sortedJson = om.writeValueAsString(newAsset);
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
|
||||
return newAsset;
|
||||
}
|
||||
|
|
@ -275,7 +228,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
* @return array of assets found on the ledger
|
||||
*/
|
||||
@Transaction(intent = Transaction.TYPE.EVALUATE)
|
||||
public String GetAllAssets(final Context ctx) {
|
||||
public String GetAllAssets(final Context ctx) throws JsonProcessingException,IOException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
|
||||
List<Asset> queryResults = new ArrayList<Asset>();
|
||||
|
|
@ -287,13 +240,13 @@ public final class AssetTransfer implements ContractInterface {
|
|||
QueryResultsIterator<KeyValue> results = stub.getStateByRange("", "");
|
||||
|
||||
for (KeyValue result: results) {
|
||||
Asset asset = gson.fromJson(result.getStringValue(), Asset.class);
|
||||
Asset asset = genson.deserialize(result.getStringValue(), Asset.class);
|
||||
System.out.println(asset);
|
||||
queryResults.add(asset);
|
||||
System.out.println(asset.toString());
|
||||
}
|
||||
|
||||
final String response = gson.toJson(queryResults);
|
||||
|
||||
//Set pretty printing of json
|
||||
final String response = genson.serialize(queryResults);
|
||||
return response;
|
||||
}
|
||||
}
|
||||
|
|
@ -10,6 +10,8 @@ import java.util.TreeMap;
|
|||
import java.util.Map;
|
||||
import java.util.HashMap;
|
||||
|
||||
import com.fasterxml.jackson.core.JsonProcessingException;
|
||||
import java.io.IOException;
|
||||
|
||||
import org.hyperledger.fabric.contract.Context;
|
||||
import org.hyperledger.fabric.contract.ContractInterface;
|
||||
|
|
@ -23,10 +25,11 @@ import org.hyperledger.fabric.shim.ChaincodeException;
|
|||
import org.hyperledger.fabric.shim.ChaincodeStub;
|
||||
import org.hyperledger.fabric.shim.ledger.KeyValue;
|
||||
import org.hyperledger.fabric.shim.ledger.QueryResultsIterator;
|
||||
import com.fasterxml.jackson.core.type.TypeReference;
|
||||
|
||||
import com.fasterxml.jackson.databind.SerializationFeature;
|
||||
import com.fasterxml.jackson.databind.ObjectMapper;
|
||||
import com.google.gson.Gson;
|
||||
import com.owlike.genson.Genson;
|
||||
|
||||
@Contract(
|
||||
name = "basic",
|
||||
|
|
@ -44,8 +47,8 @@ import com.google.gson.Gson;
|
|||
@Default
|
||||
public final class AssetTransfer implements ContractInterface {
|
||||
|
||||
private Gson gson = new Gson();
|
||||
private ObjectMapper om = new ObjectMapper();
|
||||
private final Genson genson = new Genson();
|
||||
private ObjectMapper om = new ObjectMapper().configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);;
|
||||
|
||||
private enum AssetTransferErrors {
|
||||
ASSET_NOT_FOUND,
|
||||
|
|
@ -58,7 +61,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
* @param ctx the transaction context
|
||||
*/
|
||||
@Transaction(intent = Transaction.TYPE.SUBMIT)
|
||||
public void InitLedger(final Context ctx) {
|
||||
public void InitLedger(final Context ctx) throws JsonProcessingException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
|
||||
CreateAsset(ctx, "asset1", "blue", 5, "Tomoko", 300);
|
||||
|
|
@ -83,7 +86,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
*/
|
||||
@Transaction(intent = Transaction.TYPE.SUBMIT)
|
||||
public Asset CreateAsset(final Context ctx, final String assetID, final String color, final int size,
|
||||
final String owner, final int appraisedValue) {
|
||||
final String owner, final int appraisedValue) throws JsonProcessingException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
|
||||
if (AssetExists(ctx, assetID)) {
|
||||
|
|
@ -93,28 +96,10 @@ public final class AssetTransfer implements ContractInterface {
|
|||
}
|
||||
|
||||
Asset asset = new Asset(assetID, color, size, owner, appraisedValue);
|
||||
//deserializing your json into a sorted map, and then serialize the map to get the sorted-by-key json string.
|
||||
//TreeMap will enforce a sorting order for you, independent of what order they're supplied in
|
||||
String json = gson.toJson(asset);
|
||||
try {
|
||||
om.configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);
|
||||
Map<String, Object> map = om.readValue(json, HashMap.class);
|
||||
String sortedJson = om.writeValueAsString(map);
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
} catch (Exception e) {
|
||||
}
|
||||
/*String json = gson.toJson(asset);
|
||||
TreeMap<String, Object> map = gson.fromJson(json, TreeMap.class);
|
||||
String sortedJson = gson.toJson(map);
|
||||
stub.putStringState(assetID, sortedJson);*/
|
||||
|
||||
//could use JSON Object approach instead
|
||||
/*Map<String, String> sortedMap = gson.fromJson(json, TreeMap.class); //this will auto-sort by key alphabetically
|
||||
JSONObject sortedJSON = new JSONObject(); //recreate new JSON object for sorted result
|
||||
for (Map.Entry<String, String> entry : sortedMap.entrySet()) {
|
||||
sortedJSON.put(entry.getKey(), entry.getValue());
|
||||
}
|
||||
stub.putState(assetID, sortedJson); //wuold do it if possible to write JSONObject to stste */
|
||||
//Use a Jackson ObjectMapper to conver the Asset into string, sort it alphabetically and serialize it into a json string
|
||||
String sortedJson = om.writeValueAsString(asset);
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
|
||||
return asset;
|
||||
}
|
||||
|
|
@ -127,7 +112,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
* @return the asset found on the ledger if there was one
|
||||
*/
|
||||
@Transaction(intent = Transaction.TYPE.EVALUATE)
|
||||
public Asset ReadAsset(final Context ctx, final String assetID) {
|
||||
public Asset ReadAsset(final Context ctx, final String assetID) throws JsonProcessingException,IOException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
String assetJSON = stub.getStringState(assetID);
|
||||
|
||||
|
|
@ -137,7 +122,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_NOT_FOUND.toString());
|
||||
}
|
||||
|
||||
Asset asset = gson.fromJson(assetJSON, Asset.class);
|
||||
Asset asset = genson.deserialize(assetJSON, Asset.class);
|
||||
return asset;
|
||||
}
|
||||
|
||||
|
|
@ -154,7 +139,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
*/
|
||||
@Transaction(intent = Transaction.TYPE.SUBMIT)
|
||||
public Asset UpdateAsset(final Context ctx, final String assetID, final String color, final int size,
|
||||
final String owner, final int appraisedValue) {
|
||||
final String owner, final int appraisedValue) throws JsonProcessingException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
|
||||
if (!AssetExists(ctx, assetID)) {
|
||||
|
|
@ -164,26 +149,10 @@ public final class AssetTransfer implements ContractInterface {
|
|||
}
|
||||
|
||||
Asset newAsset = new Asset(assetID, color, size, owner, appraisedValue);
|
||||
String json = gson.toJson(newAsset);
|
||||
try {
|
||||
om.configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);
|
||||
Map<String, Object> map = om.readValue(json, HashMap.class);
|
||||
String sortedJson = om.writeValueAsString(map);//could also use gson instead
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
} catch (Exception e) {
|
||||
}
|
||||
/*String json = gson.toJson(asset);
|
||||
TreeMap<String, Object> map = gson.fromJson(json, TreeMap.class);
|
||||
String sortedJson = gson.toJson(map);
|
||||
stub.putStringState(assetID, sortedJson);*/
|
||||
|
||||
//could use JSON Object approach instead
|
||||
/*Map<String, String> sortedMap = gson.fromJson(json, TreeMap.class); //this will auto-sort by key alphabetically
|
||||
JSONObject sortedJSON = new JSONObject(); //recreate new JSON object for sorted result
|
||||
for (Map.Entry<String, String> entry : sortedMap.entrySet()) {
|
||||
sortedJSON.put(entry.getKey(), entry.getValue());
|
||||
}
|
||||
stub.putState(assetID, sortedJson); //wuold do it if possible to write JSONObject to stste */
|
||||
//Use a Jackson ObjectMapper to conver the Asset into string, sort it alphabetically and serialize it into a json string
|
||||
String sortedJson = om.writeValueAsString(newAsset);
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
|
||||
return newAsset;
|
||||
}
|
||||
|
|
@ -231,7 +200,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
* @return the updated asset
|
||||
*/
|
||||
@Transaction(intent = Transaction.TYPE.SUBMIT)
|
||||
public Asset TransferAsset(final Context ctx, final String assetID, final String newOwner) {
|
||||
public Asset TransferAsset(final Context ctx, final String assetID, final String newOwner) throws JsonProcessingException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
String assetJSON = stub.getStringState(assetID);
|
||||
|
||||
|
|
@ -241,29 +210,13 @@ public final class AssetTransfer implements ContractInterface {
|
|||
throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_NOT_FOUND.toString());
|
||||
}
|
||||
|
||||
Asset asset = gson.fromJson(assetJSON, Asset.class);
|
||||
|
||||
//Asset asset = gson.fromJson(assetJSON, Asset.class);
|
||||
Asset asset = genson.deserialize(assetJSON, Asset.class);
|
||||
Asset newAsset = new Asset(asset.getAssetID(), asset.getColor(), asset.getSize(), newOwner, asset.getAppraisedValue());
|
||||
String json = gson.toJson(newAsset);
|
||||
try {
|
||||
om.configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);
|
||||
Map<String, Object> map = om.readValue(json, HashMap.class);
|
||||
String sortedJson = om.writeValueAsString(map);
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
} catch (Exception e) {
|
||||
}
|
||||
/*String json = gson.toJson(asset);
|
||||
TreeMap<String, Object> map = gson.fromJson(json, TreeMap.class);
|
||||
String sortedJson = gson.toJson(map);
|
||||
stub.putStringState(assetID, sortedJson);*/
|
||||
|
||||
//could use JSON Object approach instead
|
||||
/*Map<String, String> sortedMap = gson.fromJson(json, TreeMap.class); //this will auto-sort by key alphabetically
|
||||
JSONObject sortedJSON = new JSONObject(); //recreate new JSON object for sorted result
|
||||
for (Map.Entry<String, String> entry : sortedMap.entrySet()) {
|
||||
sortedJSON.put(entry.getKey(), entry.getValue());
|
||||
}
|
||||
stub.putState(assetID, sortedJson); //wuold do it if possible to write JSONObject to stste */
|
||||
//Use a Jackson ObjectMapper to conver the Asset into string, sort it alphabetically and serialize it into a json string
|
||||
String sortedJson = om.writeValueAsString(newAsset);
|
||||
stub.putStringState(assetID, sortedJson);
|
||||
|
||||
return newAsset;
|
||||
}
|
||||
|
|
@ -275,7 +228,7 @@ public final class AssetTransfer implements ContractInterface {
|
|||
* @return array of assets found on the ledger
|
||||
*/
|
||||
@Transaction(intent = Transaction.TYPE.EVALUATE)
|
||||
public String GetAllAssets(final Context ctx) {
|
||||
public String GetAllAssets(final Context ctx) throws JsonProcessingException,IOException{
|
||||
ChaincodeStub stub = ctx.getStub();
|
||||
|
||||
List<Asset> queryResults = new ArrayList<Asset>();
|
||||
|
|
@ -287,13 +240,13 @@ public final class AssetTransfer implements ContractInterface {
|
|||
QueryResultsIterator<KeyValue> results = stub.getStateByRange("", "");
|
||||
|
||||
for (KeyValue result: results) {
|
||||
Asset asset = gson.fromJson(result.getStringValue(), Asset.class);
|
||||
Asset asset = genson.deserialize(result.getStringValue(), Asset.class);
|
||||
System.out.println(asset);
|
||||
queryResults.add(asset);
|
||||
System.out.println(asset.toString());
|
||||
}
|
||||
|
||||
final String response = gson.toJson(queryResults);
|
||||
|
||||
//Set pretty printing of json
|
||||
final String response = genson.serialize(queryResults);
|
||||
return response;
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue