北京一次治疗白癜风花多少钱 http://pf.39.net/bdfyy/bdfjc/150526/4629681.html有时服务器要json的字符串这是就需要把字符串转换成json字符串的方法把nsstring转化成jsonStr-(NSString*)JSONString:(NSString*)aString{NSMutableString*s=[NSMutableStringstringWithString:aString];[sreplaceOccurrencesOfString:\withString:\\\options:NSCaseInsensitiveSearchrange:NSMakeRange(0,[slength])];[sreplaceOccurrencesOfString:/withString:\\/options:NSCaseInsensitiveSearchrange:NSMakeRange(0,[slength])];[sreplaceOccurrencesOfString:\nwithString:\\noptions:NSCaseInsensitiveSearchrange:NSMakeRange(0,[slength])];[sreplaceOccurrencesOfString:\bwithString:\\boptions:NSCaseInsensitiveSearchrange:NSMakeRange(0,[slength])];[sreplaceOccurrencesOfString:\fwithString:\\foptions:NSCaseInsensitiveSearchrange:NSMakeRange(0,[slength])];[sreplaceOccurrencesOfString:\rwithString:\\roptions:NSCaseInsensitiveSearchrange:NSMakeRange(0,[slength])];[sreplaceOccurrencesOfString:\twithString:\\toptions:NSCaseInsensitiveSearchrange:NSMakeRange(0,[slength])];return[NSStringstringWithString:s];}创建一个工程创建一个字符串吧方法创建好黏贴到方法里，请忽视警告打印结果结果出来了
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