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+ (NSString *)translate:(NSString *)string
{
    NSString * newString = nil;
    if (string) {
 
        // 去两端空格
        NSString *temp = [string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];     
 
        // 去回车   
        newString = [temp stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];  
 
    }else{
        retString = @"";
    }
    return newString;
}

+ (NSString *)translate:(NSString *)string { NSString * newString = nil; if (string) { // 去两端空格 NSString *temp = [string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; // 去回车 newString = [temp stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; }else{ retString = @""; } return newString; }