验证码字体

package com.xysz.common.security;

import java.io.ByteArrayInputStream;
import java.awt.*;

/**
 * ttf字体文件
 *
 * @author Caisin
 */
public class ImgFontByte {
    public Font getFont（int fontHeight） {
        try {
            //创建一个新字体
            Font baseFont = Font.createFont（Font.TRUETYPE_FONT new ByteArrayInputStream（hex2byte（getFontByteStr（））））;
            return baseFont.deriveFont（Font.PLAIN fontHeight）;
        } catch （Exception e） {
            return new Font（“Arial“ Font.PLAIN fontHeight）;
        }
    }

    private byte[] hex2byte（String str） {
        if （str == null） {
            return null;
        }
        str = str.trim（）;
        int len = str.length（）;
        if （len == 0 || len % 2 == 1） {
            return null;
        }

        byte[] b = new byte[len / 2];
        try {
            for （int i = 0; i < str.length（）; i += 2） {
                b[i / 2] = （byte） Integer
                        .decode（“0x“ + str.substring（i i + 2））.intValue（）;
            }
            return b;
        } catch （Exception e） {
            return null;
        }
    }

    /**
     * ttf字体文件的十六进制字符串
     *
     * @return
     */
    private String getFontByteStr（） {
        StringBuilder sb = new StringBuilder（）;
        sb.append（“0001000000100040000400c04f532f327d8175d4000087740000005650434c5461e3d9fb000087“）;
        sb.append（“cc00000036636d61709cbc69ab00007a64000005e863767420bb32bf1600000f24000000326“）;
        sb.append（“670676d8333c24f00000f1000000014676c7966302665d800000fc40000663c68646d7806bee“）;
        sb.append（“f530000806c0000070868656164c6469a91000088040000003668686561068002f40000883c0“）;
        sb.append（“0000024686d7478e8bd09b4000077b0000001ac6b65726efffe00650000804c0000001e6c6f6“）;
        sb.append（“361001a319600007600000001b06d617870013e049f00008860000000206e616d65a927f70000“）;
        sb.append（“00010c00000e04706f737469df66ea0000795c0000010670726570eacfd8a800000f580000006b“）;
        sb.append（“0000001f017a000000000000000001de00000000000000000001001c00520000000000000002000“）;
        sb.append（“e01de0000000000000003003201ec0000000000000004001c005200000000000000050024021e000“）;
        sb.append（“0000000000006001a02420000000000000007005c0052000100000000000000ef025c000100000000“）;
        sb.append（“0001000e028500010000000000020007034b0001000000000003001903520001000000000004000e“）;
        sb.append（“028500010000000000050012036b0001000000000006000d037d0001000000000007002e02850003“）;
        sb.append（“00010409000001de00000003000104090001001c00520003000104090002000e01de0003000104090“）;
        sb.append（“003003201ec0003000104090004001c005200030001040900050024021e0003000104090006001a02“）;
        sb.append（“420003000104090007005c00520003000104090008002c038a000300010409000900180aa20003000“）;
        sb.append（“10409000a01300b16000300010409000b004c0a12000300010409000c00440c46000300010409000d0“）;
        sb.append（“76003b6000300010409000e00600a12006