URL拼接参数方法

[iOS] --------url拼接参数方法

url拼接参数,判断后面是否有 “?”的情况

NSString+Extention.h

 #import <Foundation/Foundation.h>
 
@interface NSString (Extention)
-(NSString *)urlAddCompnentForValue:(NSString *)value key:  (NSString *)key;
@end

NSString+Extention.m

#import "NSString+Extention.h"
 
@implementation NSString (Extention)
-(NSString *)urlAddCompnentForValue:(NSString *)value key:(NSString *)key{
    
    NSMutableString *string = [[NSMutableString alloc]initWithString:self];
    @try {
        NSRange range = [string rangeOfString:@"?"];
        if (range.location != NSNotFound) {//找到了
            //如果?是最后一个直接拼接参数
            if (string.length == (range.location + range.length)) {
                NSLog(@"最后一个是?");
                string = (NSMutableString *)[string stringByAppendingString:[NSString stringWithFormat:@"%@=%@",key,value]];
            }else{//如果不是最后一个需要加&
                if([string hasSuffix:@"&"]){//如果最后一个是&,直接拼接
                    string = (NSMutableString *)[string stringByAppendingString:[NSString stringWithFormat:@"%@=%@",key,value]];
                }else{//如果最后不是&,需要加&后拼接
                    string = (NSMutableString *)[string stringByAppendingString:[NSString stringWithFormat:@"&%@=%@",key,value]];
                }
            }
        }else{//没找到
            if([string hasSuffix:@"&"]){//如果最后一个是&,去掉&后拼接
                string = (NSMutableString *)[string substringToIndex:string.length-1];
            }
            string = (NSMutableString *)[string stringByAppendingString:[NSString stringWithFormat:@"?%@=%@",key,value]];
        }
    } @catch (NSException *exception) {
        
    } @finally {
        
    }
    
    
    return string.copy;
}
@end