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/*Copyright (C) 2020 THL A29 Limited, a Tencent company. All rights reserved. This source code is licensed under the Apache License Version 2.0.*/ package apijson; import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; import com.alibaba.fastjson.parser.Feature; import com.alibaba.fastjson.serializer.SerializerFeature; import java.util.List; /**阿里FastJSON封装类 防止解析时异常 * @author Lemon */ public class JSON { private static final String TAG = "JSON"; /**判断json格式是否正确 * @param s * @return */ public static boolean isJsonCorrect(String s) { //太长 Log.i(TAG, "isJsonCorrect <<<< " + s + " >>>>>>>"); if (s == null // || s.equals("[]") // || s.equals("{}") || s.equals("") || s.equals("[null]") || s.equals("{null}") || s.equals("null")) { return false; } return true; } /**获取有效的json * @param s * @return */ public static String getCorrectJson(String s) { return getCorrectJson(s, false); } /**获取有效的json * @param s * @param isArray * @return */ public static String getCorrectJson(String s, boolean isArray) { s = StringUtil.getTrimedString(s); // if (isArray) { // while (s.startsWith("\"")) { // s = s.substring(1); // } // while (s.endsWith("\"")) { // s = s.substring(0, s.length() - 1); // } // } return s;//isJsonCorrect(s) ? s : null; } /** * @param json * @return */ public static Object parse(Object obj) { int features = com.alibaba.fastjson.JSON.DEFAULT_PARSER_FEATURE; features |= Feature.OrderedField.getMask(); try { return com.alibaba.fastjson.JSON.parse(obj instanceof String ? (String) obj : toJSONString(obj), features); } catch (Exception e) { Log.i(TAG, "parse catch \n" + e.getMessage()); } return null; } /**obj转JSONObject * @param json * @return */ public static JSONObject parseObject(Object obj) { if (obj instanceof JSONObject) { return (JSONObject) obj; } return parseObject(toJSONString(obj)); } /**json转JSONObject * @param json * @return */ public static JSONObject parseObject(String json) { int features = com.alibaba.fastjson.JSON.DEFAULT_PARSER_FEATURE; features |= Feature.OrderedField.getMask(); return parseObject(json, features); } /**json转JSONObject * @param json * @param features * @return */ public static JSONObject parseObject(String json, int features) { try { return com.alibaba.fastjson.JSON.parseObject(getCorrectJson(json), JSONObject.class, features); } catch (Exception e) { Log.i(TAG, "parseObject catch \n" + e.getMessage()); } return null; } /**JSONObject转实体类 * @param object * @param clazz * @return */ public static T parseObject(JSONObject object, Class clazz) { return parseObject(toJSONString(object), clazz); } /**json转实体类 * @param json * @param clazz * @return */ public static T parseObject(String json, Class clazz) { if (clazz == null) { Log.e(TAG, "parseObject clazz == null >> return null;"); } else { try { int features = com.alibaba.fastjson.JSON.DEFAULT_PARSER_FEATURE; features |= Feature.OrderedField.getMask(); return com.alibaba.fastjson.JSON.parseObject(getCorrectJson(json), clazz, features); } catch (Exception e) { Log.i(TAG, "parseObject catch \n" + e.getMessage()); } } return null; } /**list转JSONArray * @param list * @return */ public static JSONArray parseArray(List list) { return new JSONArray(list); } /**obj转JSONArray * @param obj * @return */ public static JSONArray parseArray(Object obj) { if (obj instanceof JSONArray) { return (JSONArray) obj; } return parseArray(toJSONString(obj)); } /**json转JSONArray * @param json * @return */ public static JSONArray parseArray(String json) { try { return com.alibaba.fastjson.JSON.parseArray(getCorrectJson(json, true)); } catch (Exception e) { Log.i(TAG, "parseArray catch \n" + e.getMessage()); } return null; } /**JSONArray转实体类列表 * @param array * @param clazz * @return */ public static List parseArray(JSONArray array, Class clazz) { return parseArray(toJSONString(array), clazz); } /**json转实体类列表 * @param json * @param clazz * @return */ public static List parseArray(String json, Class clazz) { if (clazz == null) { Log.e(TAG, "parseArray clazz == null >> return null;"); } else { try { return com.alibaba.fastjson.JSON.parseArray(getCorrectJson(json, true), clazz); } catch (Exception e) { Log.i(TAG, "parseArray catch \n" + e.getMessage()); } } return null; } /**实体类转json * @param obj * @return */ public static String toJSONString(Object obj) { if (obj instanceof String) { return (String) obj; } try { return com.alibaba.fastjson.JSON.toJSONString(obj); } catch (Exception e) { Log.e(TAG, "toJSONString catch \n" + e.getMessage()); } return null; } /**实体类转json * @param obj * @param features * @return */ public static String toJSONString(Object obj, SerializerFeature... features) { if (obj instanceof String) { return (String) obj; } try { return com.alibaba.fastjson.JSON.toJSONString(obj, features); } catch (Exception e) { Log.e(TAG, "parseArray catch \n" + e.getMessage()); } return null; } /**格式化，显示更好看 * @param json * @return */ public static String format(String json) { return format(parse(json)); } /**格式化，显示更好看 * @param object * @return */ public static String format(Object object) { return toJSONString(object, SerializerFeature.PrettyFormat); } /**判断是否为JSONObject * @param obj instanceof String ? parseObject * @return */ public static boolean isJSONObject(Object obj) { if (obj instanceof JSONObject) { return true; } if (obj instanceof String) { try { JSONObject json = parseObject((String) obj); return json != null && json.isEmpty() == false; } catch (Exception e) { Log.e(TAG, "isJSONObject catch \n" + e.getMessage()); } } return false; } /**判断是否为JSONArray * @param obj instanceof String ? parseArray * @return */ public static boolean isJSONArray(Object obj) { if (obj instanceof JSONArray) { return true; } if (obj instanceof String) { try { JSONArray json = parseArray((String) obj); return json != null && json.isEmpty() == false; } catch (Exception e) { Log.e(TAG, "isJSONArray catch \n" + e.getMessage()); } } return false; } /**判断是否为 Boolean,Number,String 中的一种 * @param obj * @return */ public static boolean isBooleanOrNumberOrString(Object obj) { return obj instanceof Boolean || obj instanceof Number || obj instanceof String; } }