有人可以帮我解决这个问题吗，我有一个高度嵌套到多个级别的JSONObject，我想用不同的值替换某些键吗？以下是我的JSONOBject：
{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Put_Location_Request",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Location_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Location_Data",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Location_ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Effective_Date",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Location_Name",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Location_Usage_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Location_Type_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Location_Attribute_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Superior_Location_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Inactive",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Latitude",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Longitude",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Altitude",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Time_Profile_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Locale_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Display_Language_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Time_Zone_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Default_Currency_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "External_Name",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Default_Job_Posting_Location_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Trade_Name",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Worksite_ID_Code",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Global_Location_Number",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Location_Identifier",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Default_Ship-To_Location_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Associate_Deliver-To_Location_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Instructional_Site_Data",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Academic_Unit_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Instructional_Site_Data_Capacity",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Off-Site",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Instructional_Use_Only",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Student_Housing_Assignment_Data",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Academic_Unit_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Location_Training_Room_Data",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Link",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Capacity",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Directions",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Equipment",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Reservation_Details",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Video_Conference_Details",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Additional_Details",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, {
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Contact_Data",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Address_Data",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "Country_Reference",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": [{
"nullable": null,
"localPart": null,
"prefix": null,
"precision": null,
"name": "ID",
"namespace": null,
"scale": null,
"unicode": null,
"type": null,
"maxLength": null,
"srid": null,
"subEntities": null
}]
}, .........
在上面的JSONObject中，我想将$ nullable键替换为$ nullable，将localPart替换为$ localPart等。任何人都可以通过Java代码帮助我。
答案 0 :(得分：0)
我用以下代码解决了这个问题：
import java.util.Iterator;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class ReplaceKeyInNestedJson {
public static void removeJSONField(JSONObject obj) throws JSONException {
obj.put("$nullable", obj.remove("nullable"));
obj.put("$localPart", obj.remove("localPart"));
obj.put("$prefix", obj.remove("prefix"));
obj.put("$precision", obj.remove("precision"));
obj.put("$name", obj.remove("name"));
obj.put("$namespace", obj.remove("namespace"));
obj.put("$scale", obj.remove("scale"));
Iterator<String> it = obj.keys();
while (it.hasNext()) {
String key = it.next();
Object childObj = obj.get(key);
if (childObj instanceof JSONArray) {
JSONArray arrayChildObjs = ((JSONArray) childObj);
int size = arrayChildObjs.length();
for (int i = 0; i < size; i++) {
removeJSONField(arrayChildObjs.getJSONObject(i));
}
}
if (childObj instanceof JSONObject) {
removeJSONField(((JSONObject) childObj));
}
}
}
public static void main(String[] args) {
String jsonStr = "{\n" + " \"nullable\": null,\n" + " \"localPart\": null,\n" + " \"prefix\": null,\n"
+ " \"precision\": null,\n" + " \"name\": \"Put_Location_Request\",\n" + " \"namespace\": null,\n"
+ " \"scale\": null,\n" + " \"unicode\": null,\n" + " \"type\": null,\n" + " \"maxLength\": null,\n"
+ " \"srid\": null,\n" + " \"subEntities\": [\n" + " {\n" + " \"nullable\": null,\n"
+ " \"localPart\": null,\n" + " \"prefix\": null,\n" + " \"precision\": null,\n"
+ " \"name\": \"Location_Reference\",\n" + " \"namespace\": null,\n"
+ " \"scale\": null,\n" + " \"unicode\": null,\n" + " \"type\": null,\n"
+ " \"maxLength\": null,\n" + " \"srid\": null,\n" + " \"subEntities\": [{\n"
+ " \"nullable\": null,\n" + " \"localPart\": null,\n" + " \"prefix\": null,\n"
+ " \"precision\": null,\n" + " \"name\": \"ID\",\n"
+ " \"namespace\": null,\n" + " \"scale\": null,\n" + " \"unicode\": null,\n"
+ " \"type\": null,\n" + " \"maxLength\": null,\n" + " \"srid\": null,\n"
+ " \"subEntities\": null\n" + " }]\n" + " }, {\n" + " \"nullable\": null,\n"
+ " \"localPart\": null,\n" + " \"prefix\": null,.............";
try {
JSONObject obj = new JSONObject(jsonStr);
removeJSONField(obj);
System.out.println(obj);
} catch (JSONException e) {
e.printStackTrace();
}
}}
答案 1 :(得分：0)
如果使用速度更快。杰克逊图书馆，您可以通过以下方式解决问题：
import java.io.IOException;
import java.util.Iterator;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
public class ReplaceKeyInNestedJson2 {
private static final String FIELD_TYPE = "FieldType";
public static JsonNode removeJSONField(JsonNode obj) {
ObjectNode object = (ObjectNode) obj;
object.put("$kind", FIELD_TYPE);
object.set("$nullable", object.get("nullable"));
object.remove("nullable");
object.set("$localPart", object.get("localPart"));
object.remove("localPart");
object.set("$prefix", object.get("prefix"));
object.remove("prefix");
object.set("$precision", object.get("precision"));
object.remove("precision");
object.set("$name", object.get("name"));
object.remove("name");
object.set("$namespace", object.get("namespace"));
object.remove("namespace");
object.set("$scale", object.get("scale"));
object.remove("scale");
Iterator<String> it = obj.fieldNames();
while (it.hasNext()) {
String key = it.next();
JsonNode childObj = obj.get(key);
if (childObj.isArray()) {
ArrayNode arrayChildObjs = ((ArrayNode) childObj);
int size = arrayChildObjs.size();
for (int i = 0; i < size; i++) {
removeJSONField(arrayChildObjs.get(i));
}
}
if (childObj.isObject()) {
removeJSONField(((JsonNode) childObj));
}
}
return obj;
}
public static void main(String[] args) throws IOException {
try {
ObjectMapper mapper = new ObjectMapper();
JsonNode obj = mapper.readTree(StaticData.fieldsJson);
JsonNode result = removeJSONField(obj);
System.out.println(result);
} catch (Exception e) {
e.printStackTrace();
}
}
}