public static JSONObject readJSONObject(File file, Charset charset) throws IORuntimeException {
		return parseObj(FileReader.create(file, charset).readString());
	}
public static JSONObject readJSONObject ( File file , Charset charset ) throws IORuntimeException { return parseObj ( FileReader . create ( file , charset ) . readString ( ) ) ; }
读取JSONObject

@param file JSON文件
@param charset 编码
@return JSONObject
@throws IORuntimeException IO异常