如何从ios中的字符串响应制作数组或字典？

Question

我正在为ios应用程序调用php webservice。 我得到的响应如下字符串：

a：10：{s：11：“ sso_user_id”; s：6：“ 123456”; s：9：“名字”; s：3：“ xyz”; s：8：“姓氏”; s：3：“ abc”; s：5：“ abono”; s：1：“ 1”; s：4：“哈希”; s：32：“ 638550add0b538a5a771d”; s：5：“令牌”; s：32：“ 78451add0b51245789555514585” ; s：5：“登录”; s：8：“ xxxxxxxx”; s：6：“ cookie”; s：0：“”; s：6：“访问”; a：5：{s：4：“角色“; s：6：” TESTER“; s：13：” initial_reads“; s：1：” 8“; s：14：” reads_remained“; s：1：” 8“; s：11：” valid_until“ ; s：9：“ 2014-11-1”; s：10：“ tmp_portal”; s：10：“ google.com”;} s：5：“错误”; s：0：“”;}

...键...和.......值

sso_user_id     123456
firstname       xyz
lastname        abc
abono           1
hash            638550add0b538a5a771d
token           78451add0b51245789555514585
login           xxxxx
role            TESTER  
initial_reads   11
valid_until     2014-11-1
tmp_portal      google.com

注意：其中a：10表示10个对象的数组，而s：11表示长度为10个字符的字符串。

但我不知道如何将该字符串转换为数组或字典以获取键值。

谢谢，

Answer 1

好吧，这很容易得到。如果您遵循以下代码

  //just give your URL instead of my URL

  NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:[NSURL     URLWithString:@"http://api.worldweatheronline.com/free/v1/search.ashx?query=London&num_of_results=3&format=json&key=xkq544hkar4m69qujdgujn7w"]];

  [request setHTTPMethod:@"GET"];

  [request setValue:@"application/json;charset=UTF-8" forHTTPHeaderField:@"content-type"];

  NSError *err;

  NSURLResponse *response;

  NSData *responseData = [NSURLConnection sendSynchronousRequest:request   returningResponse:&response error:&err];

 //You need to check response.Once you get the response copy that and paste in ONLINE JSON VIEWER.If you do this clearly you can get the correct results.    

 //After that it depends upon the json format whether it is DICTIONARY or ARRAY 

  NSDictionary *jsonArray = [NSJSONSerialization JSONObjectWithData:responseData options: NSJSONReadingMutableContainers error: &err];

  NSArray *array=[[jsonArray objectForKey:@"s"]objectForKey:@"sso_user_id "]objectForKey:@"firstname"]objectForKey:@"lastname"]objectForKey:@"abono"]objectForKey:@"hash"]objectForKey:@"token"]objectForKey:@"login"]objectForKey:@"role "]objectForKey:@"initial_reads"]objectForKey:@"valid_until"]objectForKey:@"tmp_portal"]; // Now i give your  key all keys.So check it.

Answer 2

在您的.h部分

1. //步骤1：添加Delegate类

     First of all you should add <NSXMLParserDelegate> 

2. //步骤2：创建必要的对象

     NSXMLParser *parser; NSMutableData *ReceviedData; NSMutableString *currentStringValue; NSMutableArray *sso_user_id; NSMutableArray *firstName; NSMutableArray *lastName; NSMutableArray *abono; NSMutableArray *hash; NSMutableArray *token; NSMutableArray *login; NSMutableArray *role; NSMutableArray *initial_reads; NSMutableArray *valid_until; NSMutableArray *tmp_portal; 

   在您的.m部分

    //Step 3 - Allocate your all Arrays in your viewDidLoad method sso_user_id = [NSMutableArray alloc]init]; .... tmp_portal = [NSMutableArray alloc]init]; //Step 4 - Create Connection in your viewDidLoad Like [self createConnection:@"http://www.google.com"];//give yoyur valid url. - (void)createConnection:(NSString *)urlString { NSURL *url = [NSURL URLWithString:urlString]; //Step 5 - parser delegate methods are using NSURLConnectionDelegate class or not. BOOL success; if (!parser) { parser = [[NSXMLParser alloc] initWithContentsOfURL:url]; parser.delegate = self; parser.shouldResolveExternalEntities = YES; success = [parser parse]; NSLog(@"Success : %c",success); } } -(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict { NSLog(@"Current Element Name : %@",elementName); if ([elementName isEqualToString:@"sso_user_id"]) { NSLog(@"The sso_user_id is==%@",elementName); } if ([elementName isEqualToString:@"firstName"]) { NSLog(@"The firstname is==%@",elementName); } if ([elementName isEqualToString:@"lastName"]) { NSLog(@"The lastname is==%@",elementName); } } -(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string { currentStringValue = [[NSMutableString alloc] initWithString:string]; NSLog(@"Current String Value : %@",currentStringValue); } -(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { if ([elementName isEqualToString:@"sso_user_id"]) { [sso_user_id addObject:currentStringValue]; } if ([elementName isEqualToString:@"firstName"]) { [firstName addObject:currentStringValue]; } if ([elementName isEqualToString:@"lastName"]) { [lastName addObject:currentStringValue]; } currentStringValue = nil; } 

Answer 3

最后，我通过关注解决了我的问题。 我将代码发布在这里，以便其他任何人都可以解决我的相同问题；

//在ParsedData.h中

#import <Foundation/Foundation.h>

@interface ParsedData : NSObject
{

}
@property(nonatomic,retain)NSMutableArray *parsedDataArr;
@property(nonatomic,retain)NSMutableDictionary *finalDict;

@end

//在ParsedData.m中

#import "ParsedData.h"

@implementation ParsedData

@synthesize parsedDataArr;

-(id)init
{
    parsedDataArr = [[NSMutableArray alloc]initWithObjects:@"sso_user_id",@"firstname", @"lastname",@"abono",@"hash",@"token",@"login",@"cookie",@"role",@"initial_reads",@"reads_remained",@"valid_until",@"tmp_portal",@"error",nil];

    return self;
}

//在您的ViewVontrller.m中。

#imprort“ ParsedData.h”

-(void)buildDataFromString:(NSString*)stringToBuild;
{
    ParsedData *pd = [[ParsedData alloc]init];

    pd.finalDict = [[NSMutableDictionary alloc]init]; 

    for (int i =0; i < pd.parsedDataArr.count; i++)
    {
        NSString *arrKey = [pd.parsedDataArr objectAtIndex:i];

        if ([stringToBuild rangeOfString:arrKey].location != NSNotFound)
        {
            int length = 0;

            NSString *subString = [stringToBuild substringFromIndex:[stringToBuild rangeOfString:arrKey].location + arrKey.length + 2];

            if ([arrKey isEqualToString:@"initial_reads"] || [arrKey isEqualToString:@"reads_remained"])
            {
                length = [self getIntLengthValue:subString];

                [pd.finalDict setValue:[NSNumber numberWithInt:length] forKey:arrKey];

            }
            else
            {
                length = [self getStringLengthValue:subString];

                if (length == 0)
                {
                    [pd.finalDict setValue:@"" forKey:arrKey];
                }

                else
                {
                    // Gets the string inside the first set of parentheses in the regex
                    NSString *inside = [self getKeyValue:subString];

                    [pd.finalDict setValue:inside forKey:arrKey];
                }
            }
        }
    }

    NSLog(@"final parsed values dict - %@",pd.finalDict);
}

-(int)getIntLengthValue:(NSString *)subString
{
    NSRegularExpression *regex1 = [NSRegularExpression
                                   regularExpressionWithPattern:@"\"(.+?)\"" options:0 error:NULL];

    NSTextCheckingResult *result = [regex1 firstMatchInString:subString
                                                      options:0 range:NSMakeRange(0, [subString length] )];

    NSString *str =[subString substringWithRange:[result rangeAtIndex:1]];

    NSCharacterSet *alphaNums = [NSCharacterSet decimalDigitCharacterSet];
    NSCharacterSet *inStringSet = [NSCharacterSet characterSetWithCharactersInString:str];
    BOOL isDigitOnly = [alphaNums isSupersetOfSet:inStringSet];

    if (isDigitOnly)
    {
        return [str intValue];
    }
    else
    {
        return 0;
    }
}

-(int)getStringLengthValue:(NSString *)subString
{
    NSRegularExpression *regex1 = [NSRegularExpression
                                   regularExpressionWithPattern:@":(.+?):" options:0 error:NULL];

    NSTextCheckingResult *result = [regex1 firstMatchInString:subString
                                                      options:0 range:NSMakeRange(0, [subString length] )];

    NSString *str =[subString substringWithRange:[result rangeAtIndex:1]];

    int length = [str intValue];

    return length;
}

-(NSString *)getKeyValue:(NSString *)subString
{
    NSRegularExpression *regex = [NSRegularExpression
                                  regularExpressionWithPattern:@"\"(.+?)\"" options:0 error:NULL];

    NSTextCheckingResult *result = [regex firstMatchInString:subString
                                                     options:0 range:NSMakeRange(0, [subString length] )];

    // Gets the string inside the first set of parentheses in the regex
    NSString *inside = [subString substringWithRange:[result rangeAtIndex:1]];

    return inside;
}