我正在调用API,有时我的查询参数包含一个&符号。例如,参数可能是name=Billy & Bob
。
当我创建网址时,我使用:
NSString *url = [NSString stringWithFormat:@"%@/search/%@?name=%@&page=%d", [Statics baseURL], user_id, [term urlEncodeUsingEncoding:NSUTF8StringEncoding], page];
NSURL *fullURL = [NSURL URLWithString:[url stringWithAccessToken]];
我用这种方法编码网址:
-(NSString *)urlEncodeUsingEncoding:(NSStringEncoding)encoding {
return (NSString *)CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(NULL,
(CFStringRef)self,
NULL,
(CFStringRef)@"!*'\"();:@&=+$,/?%#[]% ",
CFStringConvertNSStringEncodingToEncoding(encoding)));
}
问题是,&符号通过urlEncodeUsingEncoding
方法正确编码,然后URLWithString
方法再次对字符串进行编码并替换创建的%
个符号在%25
的字符串中。
任何人都知道如何编码包含&符号的查询参数?
答案 0 :(得分:4)
我找到了解决方案,而且是NSURLComponents
- 此时在iOS7中添加了一个完全未记录的类。
NSURLComponents *components = [NSURLComponents new];
components.scheme = @"http";
components.host = @"myurl.com";
components.path = [NSString stringWithFormat:@"%@/mypath/%@", @"/mobile_dev/api", user_id];
components.percentEncodedQuery = [NSString stringWithFormat:@"name=%@", [term urlEncodeUsingEncoding:NSUTF8StringEncoding]];
NSURL *fullURL = [components URL];
使用components.percentEncodedQuery
,term
元素使用我放在其上的编码,而apple不会触及它。
希望这有助于其他人。
答案 1 :(得分:0)
我使用这样的东西:
- (NSString *)URLEncodedStringWithSourceString:(NSString *)sourceString
{
NSMutableString *output = [NSMutableString string];
const unsigned char *source = (const unsigned char *)[sourceString UTF8String];
int sourceLen = strlen((const char *)source);
for (int i = 0; i < sourceLen; ++i) {
const unsigned char thisChar = source[i];
if (thisChar == ' '){
[output appendString:@"+"];
} else if (thisChar == '.' || thisChar == '-' || thisChar == '_' || thisChar == '~' ||
(thisChar >= 'a' && thisChar <= 'z') ||
(thisChar >= 'A' && thisChar <= 'Z') ||
(thisChar >= '0' && thisChar <= '9')) {
[output appendFormat:@"%c", thisChar];
} else {
[output appendFormat:@"%%%02X", thisChar];
}
}
return output;
}
希望它有所帮助。