/**
* FastJson常用帮助类
* @author huangxincheng
*
*/
public class FastJsonUtil {
private static final SerializeConfig CONFIG = new SerializeConfig();
private static final String FORMAT_TIME = "yyyy-MM-dd HH:mm:ss";
private static final String FORMAT_DATE = "yyyy-MM-dd";
private static final SerializerFeature[] FEATURES = {
SerializerFeature.WriteMapNullValue,
SerializerFeature.WriteDateUseDateFormat,
SerializerFeature.WriteNullListAsEmpty
};
// WriteMapNullValue
// WriteDateUseDateFormat
static {
CONFIG.put(Date.class, new SimpleDateFormatSerializer(FORMAT_TIME));
}
public static <T> T parseObject(String json, Class<T> clazz) {
try {
T t = JSON.parseObject(json, clazz);
return t;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static <T> List<T> parseList(String json, Class<T> clazz) {
try {
List<T> list = JSON.parseArray(json, clazz);
return list;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 某人转为yyyy-MM-dd HH:mm:ss格式
* @param object
* @return
*/
public static String toJson(Object object) {
try {
String json = JSON.toJSONString(object, CONFIG, FEATURES);
return json;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static JSONObject getAsJSONObjectFromObject(String json, String key) {
try {
JSONObject jsonObject = JSON.parseObject(json);
return jsonObject.getJSONObject(key);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static JSONArray getAsJSONArrayFromObject(String json, String key) {
try {
JSONObject jsonObject = JSON.parseObject(json);
return jsonObject.getJSONArray(key);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static String getAsStringFromObject(String json, String key) {
try {
JSONObject jsonObject = JSON.parseObject(json);
return jsonObject.getString(key);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static Integer getAsIntegerFromObject(String json, String key) {
try {
JSONObject jsonObject = JSON.parseObject(json);
return jsonObject.getInteger(key);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static Long getAsLongFromObject(String json, String key) {
try {
JSONObject jsonObject = JSON.parseObject(json);
return jsonObject.getLong(key);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static Double getAsDoubleFromObject(String json, String key) {
try {
JSONObject jsonObject = JSON.parseObject(json);
return jsonObject.getDouble(key);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static Boolean getAsBooleanFromObject(String json, String key) {
try {
JSONObject jsonObject = JSON.parseObject(json);
return jsonObject.getBoolean(key);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static Short getAsShortFromObject(String json, String key) {
try {
JSONObject jsonObject = JSON.parseObject(json);
return jsonObject.getShort(key);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static Byte getAsByteFromObject(String json, String key) {
try {
JSONObject jsonObject = JSON.parseObject(json);
return jsonObject.getByte(key);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static <T> T getAsObjectFromObject(String json, String key, Class<T> clazz) {
try {
JSONObject jsonObject = JSON.parseObject(json);
return jsonObject.getObject(key, clazz);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static <T> List<T> getAsListFromObject(String json, String key, Class<T> clazz) {
try {
JSONObject jsonObject = JSON.parseObject(json);
JSONArray jsonArray = jsonObject.getJSONArray(key);
return jsonArray.toJavaList(clazz);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static <T> T toJavaObject(JSONObject jsonObject, Class<T> clazz) {
try {
T t = jsonObject.toJavaObject(clazz);
return t;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static <T> List<T> toJavaList(JSONArray jsonArray, Class<T> clazz) {
try {
List<T> list = jsonArray.toJavaList(clazz);
return list;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static JSONObject parseJSONObject(Object object) {
try {
return JSON.parseObject(toJson(object));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static JSONArray parseJSONArray(Object object) {
try {
return JSON.parseArray(toJson(object));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
//解决泛型问题 不能强制转换的方法
public static <T> T generateAssignObject(Object source, Class<T> clazz) {
try {
T t = toJavaObject(parseJSONObject(source), clazz);
return t;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
//解决泛型问题 不能强制转换的方法
public static <T> List<T> generateAssignList(Object source, Class<T> clazz) {
try {
List<T> list = toJavaList(parseJSONArray(source), clazz);
return list;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}