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package WeChat ;
// 过滤掉奇奇怪怪的英文字符
public class sqlfilter {
private static String danger = "`~!@#$^&*()=|{}';'\\[].<>/?~！ ;
public static boolean isNumber ( String text ) {
if ( text = = null ) return false ;
int length = text . length ( ) ;
if ( length > 10 ) return false ;
for ( int i = 0 ; i < length ; i + + ) {
char digit = text . charAt ( i ) ;
if ( ! ( digit > = '0' & & digit < = '9' ) ) return false ;
}
return true ;
}
public static String filter ( String sqlQue ) {
StringBuffer ft = new StringBuffer ( ) ;
for ( int i = 0 ; i < sqlQue . length ( ) ; i + + ) {
char sign = sqlQue . charAt ( i ) ;
if ( danger . indexOf ( sign ) = = - 1 ) ft . append ( sign ) ;
}
return ft . toString ( ) ;
}
}
