Convert URL request parameters to dictionaries in objective-c

The last blog is to convert the URL into a dictionary, then how do we encapsulate the parameters in the URL request into a dictionary, and then encapsulate the array? Working with strings in OC skilled small partners should feel that this is a a+b problem, yes, the parameters in the URL is converted to a dictionary is mainly the interception of the string, the key is how to cut a string, the argument list can be converted to a key value pair. The following is a side dish of their own conversion ideas, if there is a better way to end the method also please criticize, learn to communicate with each other, reproduced please indicate the source.

First we'll have a string splitter function componentsseparatedbystring:@ "&", splitting the string in & and then returning the string array

? The format of the input data is as follows (an array of strings with URLs):

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(    "http://www.baidu.com?a=10&b=20",    "http://www.baidu.com?a=10&b=20&c=30",    "http://www.baidu.com?a=10&c=30")

? ? The next step is to convert the argument list in each URL into a dictionary, the main code is as follows:

?    ? ? Code Description:

?    ?    ? 1. Get the parameter list from the starting position of the parameter list in the URL and get it by means of the method rangeofstring method.

?    ?    ? ? 2. We can extract the parameter list from the URL string and get it through the substringfromindex after we get to the location.

?    ?    ? ? 3. Use Componentsseparatedbystring to split the parameter list by each item

?    ?    ? 4. Splitting each key pair by componentsseparatedbystring

?    ?    ? 5. Storing key-value pairs in a dictionary

?    ?    ? ? 5. Storing dictionaries in arrays

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NSMutableArray * dataArray(){    //用来作为函数的返回值，数组里里面可以存放每个url转换的字典    NSMutableArray *arrayData = [NSMutableArray arrayWithCapacity:4];        //获取数组，数组里装得是url    NSMutableArray *arrayURL = appendURL();    NSLog(@"获取到得URL数组如下：\n%@", arrayURL);        //循环对数组中的每个url进行处理，把参数转换为字典    for(inti = 0; i < arrayURL.count; i ++)    {        NSLog(@"第%d个URL的处理过程：%@", i+1, arrayURL[i]);                //获取问号的位置，问号后是参数列表        NSRange range = [arrayURL[i] rangeOfString:@"?"];        NSLog(@"参数列表开始的位置：%d", (int)range.location);                //获取参数列表        NSString *propertys = [arrayURL[i] substringFromIndex:(int)(range.location+1)];        NSLog(@"截取的参数列表：%@", propertys);                //进行字符串的拆分，通过&来拆分，把每个参数分开        NSArray *subArray = [propertys componentsSeparatedByString:@"&"];        NSLog(@"把每个参数列表进行拆分，返回为数组：\n%@", subArray);                //把subArray转换为字典        //tempDic中存放一个URL中转换的键值对        NSMutableDictionary *tempDic = [NSMutableDictionary dictionaryWithCapacity:4];                for(int j = 0 ; j < subArray.count; j++)        {            //在通过=拆分键和值            NSArray *dicArray = [subArray[j] componentsSeparatedByString:@"="];            NSLog(@"再把每个参数通过=号进行拆分：\n%@", dicArray);            //给字典加入元素            [tempDic setObject:dicArray[1] forKey:dicArray[0]];        }        NSLog(@"打印参数列表生成的字典：\n%@", tempDic);        [arrayData addObject:tempDic];    }    NSLog(@"打印参数字典生成的数组：\n%@", arrayData);        returnarrayData;}

? ? The above code specific steps to perform:

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2014-08-12 13:46:14.126 HelloOC[1195:303] 第1个URL的处理过程：http://www.baidu.com?a=10&b=202014-08-12 13:46:14.126 HelloOC[1195:303] 参数列表开始的位置：202014-08-12 13:46:14.126 HelloOC[1195:303] 截取的参数列表：a=10&b=202014-08-12 13:46:14.127 HelloOC[1195:303] 把每个参数列表进行拆分，返回为数组：(    "a=10",    "b=20")2014-08-12 13:46:14.127 HelloOC[1195:303] 再把每个参数通过=号进行拆分：(    a,    10)2014-08-12 13:46:14.127 HelloOC[1195:303] 再把每个参数通过=号进行拆分：(    b,    20)2014-08-12 13:46:14.128 HelloOC[1195:303] 打印参数列表生成的字典：{    a = 10;    b = 20;}

Convert URL request parameters to dictionaries in objective-c