OC 对ISO-8859-1编码格式的进行GZIP解压

最近项目(印尼项目)从服务器获取数据有7000多条数据量很大获取数据时间较长这样很不友好服务器那边做了优化把数据进行ISO-8859-1格式压缩

这样得到的数据才50多K 是之前数据的十分之一不到响应时间大大缩短服务器返回的数据格式如下图

解码OC代码如下

+ (NSMutableArray *)parseProCityAndAreacountData:(NSDictionary *)result{

    int resultCode = [[result objectForKey:@"success"] intValue];
    NSMutableArray *resultData;
    if (resultCode == 1) {
        
        
        
        NSString *testString = [result objectForKey:@"data"];
        NSStringEncoding enc=CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingISOLatin1);
        NSData *testData = [testString dataUsingEncoding:enc];
        
        NSData *gzipData = [LFCGzipUtility ungzipData:testData];
        NSArray *dataArray = [NSJSONSerialization JSONObjectWithData:gzipData options:NSJSONReadingAllowFragments error:nil];
        resultData = [[NSMutableArray alloc] initWithCapacity:dataArray.count];
        
        
        for (int i=0; i<dataArray.count; i++) {
            
            
            NSDictionary *dic = dataArray[i];
            Provice *c = [[Provice alloc] init];
            c.proName = [dic objectForKey:@"province"];
            c.cityName = [dic objectForKey:@"city"];
            c.countyareaName = [dic objectForKey:@"countyarea"];
            
           
            
            NSString *sectionName = [[NSString stringWithFormat:@"%c",pinyinFirstLetter([c.cityName characterAtIndex:0])] uppercaseString];
            NSUInteger firstLetter = [ALPHA rangeOfString:[sectionName substringToIndex:1]].location;
            c.sortLetters = sectionName;
            c.firstLetter = [NSString stringWithFormat:@"%lu", (unsigned long)firstLetter];
            [resultData addObject:c];
        }
    }
    return resultData;
    

}

解码Android代码如下

                       byte[] bytes = s.getBytes("ISO-8859-1");
			Log.d("CityRemoteDao", "解压前大小:"+bytes.length);
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			GZIPInputStream in = new GZIPInputStream(new ByteArrayInputStream(bytes));
			byte[] buffer = new byte[1024 * 5];
			int len = 0;
			while ((len = in.read(buffer)) > 0) {
				baos.write(buffer, 0, len);
			}
			bytes = baos.toByteArray();
			Log.d("CityRemoteDao", "解压后大小:"+bytes.length);
			s = new String(bytes, "UTF-8");

这里要注意:

1、导入类 LFCGzipUtility.h 这个是别人写好的类似于安卓GZIPInputStream吧

2、上述LFCGzipUtility类需要导入libz.dylib / libz.tbd ( for iOS9.0 or later )

LFCGzipUtility下载地址: http://download.csdn.net/detail/lixianyue1991/9833170

OC 对ISO-8859-1编码格式的进行GZIP解压

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