json去掉多余斜杠

+ (NSString *) getOffRubbishWithString:(NSString *)str

{

NSMutableString *responseString = [NSMutableString
stringWithString:str];

NSString *character =
nil;

for (int i =
0; i < responseString.length; i ++) {

character = [responseString substringWithRange:NSMakeRange(i,
1)];

if ([character
isEqualToString:@"\\"])

[responseString deleteCharactersInRange:NSMakeRange(i,
1)];

}

[responseString stringByReplacingOccurrencesOfString:@"\‘"
withString:@""];

return responseString;

}