服务器返回的数据将Unicode码转成汉字

当我们请求接口的时候，服务器会返回一些数据，当我们打印的时候就会发现，打印出来的是unicode码，不是汉字。

这时候需要我们自己手动处理一下，让打印的时候输出汉字的格式。

方法如下：

新增一个分类，在分类中，重写描述的方法，如下：

/**
 *  集合类型打log
 */
@implementation NSArray (log)

- (NSString *)description{
    return [self descriptionWithLocale:nil];
}

- (NSString *)descriptionWithLocale:(id)locale{
    NSMutableString * string = [[NSMutableString alloc]init];
    [string appendString:@"[\n"];
    for (int i = ; i < self.count; i++) {
        [string appendFormat:@"\t第%d个 -- %@ \n",i,self[i] ];
    }
    [string stringByAppendingString:@"]\n"];
    return string;
}

@end

@implementation NSDictionary (Log)

- (NSString *)jsonDescription {
    // 参考了此博客 https://www.jianshu.com/p/f14b4cb1435b .
    // NSString默认使用的是UTF-16,转出UTF-8就能打印了
    NSError * error = nil ;
    NSData *data = [NSJSONSerialization dataWithJSONObject:self options:NSJSONWritingPrettyPrinted error:&error];

    if (error) {
        NSMutableString *strM = [NSMutableString stringWithString:@"{\n"];
        [self enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
            [strM appendFormat:@"\t%@ = %@ ;\n", key, obj];
        }];
        [strM appendString:@"}\n"];
        return strM;

    }

    NSString *newString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    newString = [newString stringByReplacingOccurrencesOfString:@"\\" withString:@""] ;
    return newString ;
}

- (NSString *)description{
    return [self descriptionWithLocale:nil];
}

- (NSString *)descriptionWithLocale:(id)locale
{

    if ([NSJSONSerialization isValidJSONObject:self]) {
        return [self jsonDescription];
    }
    // 原来的写法,格式上有点问题,但是转中文是没问题的
    NSMutableString *strM = [NSMutableString stringWithString:@"{\n"];

    [self enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
        [strM appendFormat:@"\t%@ = %@ ;\n", key, obj];
    }];

    [strM appendString:@"}\n"];

    return strM;
}

@end