去掉标点和空字符，转MD5

CharacterUtil

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;


public class CharacterUtil {
  
	public static String removeSymbol(String chs) {
		return chs.replaceAll("(?i)[^a-zA-Z0-9\u4E00-\u9FA5]", "");
	}
	
	public static String replaceBlank(String str) {
		String result = "";
		if(str != null) {
			Pattern p = Pattern.compile("\\s*|\t|\r|\n");
			Matcher m = p.matcher(str);
			result = m.replaceAll("");
		}
		return result;
	}
	
	public static String handleContent(String content) {
		return getMD5Str(removeSymbol(replaceBlank(content)));
	}
	
	public static String getMD5Str(String str) {
		MessageDigest messageDigest = null;  
		  
        try {  
            messageDigest = MessageDigest.getInstance("MD5");  
  
            messageDigest.reset();  
  
            messageDigest.update(str.getBytes("UTF-8"));  
        } catch (NoSuchAlgorithmException e) {  
            System.out.println("NoSuchAlgorithmException caught!");  
            System.exit(-1);  
        } catch (UnsupportedEncodingException e) {  
            e.printStackTrace();  
        }  
  
        byte[] byteArray = messageDigest.digest();  
  
        StringBuffer md5StrBuff = new StringBuffer();  
  
        for (int i = 0; i < byteArray.length; i++) {              
            if (Integer.toHexString(0xFF & byteArray[i]).length() == 1)  
                md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));  
            else  
                md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));  
        }  
  
        return md5StrBuff.toString();  
	}
}