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96 lines
3.3 KiB
Java
96 lines
3.3 KiB
Java
Server Side form validation using regex statements
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package name;
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import java.util.regex.*;
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public class regexFunctions {
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private static int SUCCESS = 0;
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private static int FAILURE = 1;
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private static int MISSING_INFO = -1;
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public static String ALL_STRING_REGEX = "[\w]+";
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public static String ALL_NUMBER_REGEX = "[0-9]+";
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/**
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* Description: Validate the field input value against the regexString which was inputted.
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* If it is null, then a missing info return code is returned (-1).
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* //java.sun.com/j2se/1.4.2/docs/api/java/util/regex/Pattern.html>Link to Javadoc
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* Return Type: int
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* @param regexString
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* @param strFieldInput
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* @return SUCESS = 0 or FAILURE = 1 or MISSING_INFO = -1
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*/
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public static int testFieldValue (String regexString, String strFieldInput)
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{
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int retCode = FAILURE;
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if ((regexString != null) && (regexString.length() > 0) &&
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(strFieldInput != null) && (strFieldInput.length() > 0))
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{
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Pattern pattern = Pattern.compile(regexString);
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Matcher matcher = pattern.matcher(strFieldInput);
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if (matcher.find())
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{
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retCode = SUCCESS;
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}
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}
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else
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{
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retCode = MISSING_INFO;
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}
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return retCode;
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}
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/**
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* Description: This method takes in an inputted String value and tries to match it
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* against the regex pattern for Strings. If successful, then the method returns a 0, if the inputted
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* value is empty or null - then it returns a -1. Finally, if the pattern does not match at all it returns a 1.
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* File: regexFunctions.java
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* Return Type: int RetCode - 0=SUCCESS; -1=Missing Information; 1=Does not Match
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*/
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public static int checkForString(String inputtedValue)
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{
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int retCode = FAILURE;
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if ((inputtedValue != null) && (inputtedValue.length() > 0))
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{
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Pattern pattern = Pattern.compile(ALL_STRING_REGEX);
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Matcher matcher = pattern.matcher(inputtedValue);
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if (matcher.find())
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{
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retCode = SUCCESS;
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}
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}
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return retCode;
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}
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/**
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* Description: This method takes in an inputted String value and tries to match it
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* against the regex pattern for all numbers. If successful, then the method returns a 0, if the inputted
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* value is empty or null - then it returns a -1. Finally, if the pattern does not match at all it returns a 1.
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* File: regexFunctions.java
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* Return Type: int RetCode - 0=SUCCESS; -1=Missing Information; 1=Does not Match
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*/
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public static int checkForNumber(String inputtedValue)
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{
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int retCode = FAILURE;
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if ((inputtedValue != null) && (inputtedValue.length() > 0))
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{
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Pattern pattern = Pattern.compile(ALL_NUMBER_REGEX);
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Matcher matcher = pattern.matcher(inputtedValue);
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if (matcher.find())
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{
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retCode = SUCCESS;
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}
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}
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return retCode;
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}
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