我看到了你在iOS开发者Facebook群组上的帖子，想给你最后一分钟的建议。
由于Amazon没有严格的命名规则，所以你必须搜索整个反馈。这就是我尝试做的事情，但我试图让它看起来不那么像黑客行为。如果你注意到，你会发现有时候反馈会返回缺失的值，如果你试图寻找特定路径名称，所以我也试图弥补这种情况。
为了使其工作，你只需要从以下URL下载NSDictionary类别：
https://github.com/nicklockwood/XMLDictionary
.h
#import <Foundation/Foundation.h>
@interface JMAmazonProcessor : NSObject
+(NSArray*)processAmazonResponseWithXMLData:(NSData*)responseObject;
@end
并且针对
.m
#import "JMAmazonProcessor.h"
@implementation JMAmazonProcessor
+(NSString*)getBookTitleWithArray:(NSArray*)array{
return [[array[0] objectForKey:kAmazonAHREFKey] objectForKey:kAmazonUnderscoreTextKey];
}
+(NSString*)getBookAuthorWithArray:(NSArray*)array{
id bookAuthor = [[array[1] objectForKey:kAmazonAHREFKey] objectForKey:kAmazonUnderscoreTextKey];
if(!bookAuthor){
bookAuthor = [array[1] objectForKey:kAmazonUnderscoreTextKey];
}
if([bookAuthor isKindOfClass:[NSArray class]]){
bookAuthor = [bookAuthor componentsJoinedByString:@" "];
}
return bookAuthor;
}
+(NSString*)getPriceFromDictionary:(NSDictionary*)dictionary{
return [NSString stringWithUTF8String:[[[[dictionary objectForKey:@"font"] lastObject] objectForKey:@"b"] cStringUsingEncoding:NSUTF8StringEncoding]];
}
+(NSString*)getRatingWithCurrentRatingDictionary:(NSDictionary*)ratingDictionary{
NSString * stars;
if([ratingDictionary objectForKey:@"_src"]){
NSString * possibleStarsURL = [ratingDictionary objectForKey:@"_src"];
if([possibleStarsURL rangeOfString:@"stars-" options:NSCaseInsensitiveSearch].location != NSNotFound){
stars = [[[[[possibleStarsURL componentsSeparatedByString:@"stars-"] lastObject] componentsSeparatedByString:@"."] firstObject] stringByReplacingOccurrencesOfString:@"-" withString:@"."];
}
}
return stars;
}
+(NSString*)getRatingFromDictionary:(NSDictionary*)dictionary{
id currentDictionary = [dictionary objectForKey:@"img"];
NSString *rating;
if([currentDictionary isKindOfClass:[NSArray class]]){
for(int i = 0; i < [currentDictionary count]; i++){
NSDictionary *currentRatingDictionary = [currentDictionary objectAtIndex:i];
if((rating = [self getRatingWithCurrentRatingDictionary:currentRatingDictionary])){
break;
}
}
}
else if([currentDictionary isKindOfClass:[NSDictionary class]]){
rating = [self getRatingWithCurrentRatingDictionary:currentDictionary];
}
if(!rating) rating = @"Rating is not currently available";
return rating;
}
+(NSArray*)processAmazonResponseWithXMLData:(NSData*)responseObject{
NSMutableArray *bookEntries = [[NSMutableArray alloc] init];
NSDictionary * itemDictionary = [[NSDictionary dictionaryWithXMLData:responseObject] objectForKey:kAmazonRootNode];
for(int i = 0; i < [[itemDictionary objectForKey:kAmazonFeedItemKey] count]; i++){
RSSBookEntryModel *cBEO = [[RSSBookEntryModel alloc] init];
NSDictionary *currentItem = [[itemDictionary objectForKey:kAmazonFeedItemKey] objectAtIndex:i];
NSString *finalXMLString = [NSString stringWithFormat:@"%@%@%@", kAmazonStartTag, [currentItem objectForKey:kAmazonDescriptionKey], kAmazonEndTag];
NSDictionary *cData = [NSDictionary dictionaryWithXMLString:finalXMLString];
NSArray *bookDetailsDictionary = [cData objectForKey:kAmazonSpanKey];
NSString *bIOURL = [[[[cData objectForKey:@"div"] objectForKey:kAmazonAHREFKey] objectForKey:@"img"] objectForKey:@"_src"];
NSString *bookImageCoverID = [[[[bIOURL componentsSeparatedByString:kAmazonBookCoverBaseURL] lastObject] componentsSeparatedByString:@"."] firstObject];
cBEO.bookTitle = [self getBookTitleWithArray:bookDetailsDictionary];
cBEO.bookAuthor = [self getBookAuthorWithArray:bookDetailsDictionary];
cBEO.bookCoverImageThumbnailURL = [NSString stringWithFormat:@"%@%@%@%@", kAmazonBookCoverBaseURL, bookImageCoverID, kAmazonBookCoverThumbnailSize, kAmazonBookCoverFileExtention];
cBEO.bookCoverImageOriginalURL = [NSString stringWithFormat:@"%@%@%@%@", kAmazonBookCoverBaseURL, bookImageCoverID, kAmazonBookCoverMaxSize, kAmazonBookCoverFileExtention];
cBEO.bookPrice = [self getPriceFromDictionary:cData];
cBEO.bookRating = [self getRatingFromDictionary:cData];
[bookEntries addObject:cBEO];
}
return bookEntries;
}
@end
抱歉。
这就是你想要使用的对象模型，非常简单明了。
@interface RSSBookEntryModel : NSObject
@property (strong, nonatomic) NSString *bookTitle;
@property (strong, nonatomic) NSString *bookAuthor;
@property (strong, nonatomic) NSString *bookCoverImageThumbnailURL;
@property (strong, nonatomic) NSString *bookCoverImageOriginalURL;
@property (strong, nonatomic) NSData *bookCoverThumbnailImage;
@property (strong, nonatomic) NSData *bookCoverOriginalImage;
@property (strong, nonatomic) NSString *bookPrice;
@property (strong, nonatomic) NSString *bookRating;
-(NSString*)description;
@end
这里是我使用的常量，以保持一切整洁。
Constant.h
extern NSString * const kAmazonRootNode;
extern NSString * const kAmazonStartTag;
extern NSString * const kAmazonEndTag;
extern NSString * const kAmazonFeedItemKey;
extern NSString *const kAmazonSpanKey;
extern NSString * const kAmazonDescriptionKey;
extern NSString *const kAmazonUnderscoreTextKey;
extern NSString *const kAmazonAHREFKey;
extern NSString *const kAmazonBookCoverBaseURL;
extern NSString *const kAmazonBookCoverThumbnailSize;
extern NSString *const kAmazonBookCoverMaxSize;
extern NSString *const kAmazonBookCoverFileExtention;
这里是Constants.m文件。
NSString * const kAmazonRootNode = @"channel";
NSString * const kAmazonStartTag = @"<startTag>";
NSString * const kAmazonEndTag = @"</startTag>";
NSString * const kAmazonFeedItemKey = @"item";
NSString *const kAmazonSpanKey = @"span";
NSString * const kAmazonDescriptionKey = @"description";
NSString *const kAmazonUnderscoreTextKey = @"__text";
NSString *const kAmazonAHREFKey = @"a";
NSString *const kAmazonBookCoverBaseURL = @"http://ecx.images-amazon.com/images/";
NSString *const kAmazonBookCoverThumbnailSize = @"._SL100";
NSString *const kAmazonBookCoverMaxSize = @"._SL500";
NSString *const kAmazonBookCoverFileExtention = @".jpg";
