通常网络请求的数据，如果不做处理在输出时显示是 \U 之类的编码的；

不需要导入别的类库解决方法

- (NSString *)replaceUnicode:(NSString *)unicodeStr {        NSString *tempStr1 = [unicodeStr stringByReplacingOccurrencesOfString:@"\\u" withString:@"\\U"];    NSString *tempStr2 = [tempStr1 stringByReplacingOccurrencesOfString:@"\"" withString:@"\\\""];    NSString *tempStr3 = [[@"\"" stringByAppendingString:tempStr2] stringByAppendingString:@"\""];    NSData *tempData = [tempStr3 dataUsingEncoding:NSUTF8StringEncoding];    NSString* returnStr = [NSPropertyListSerialization propertyListFromData:tempData                                                           mutabilityOption:NSPropertyListImmutable                                                                     format:NULL                                                           errorDescription:NULL];            return [returnStr stringByReplacingOccurrencesOfString:@"\\r\\n" withString:@"\n"];}