Java如何生成Code128C条形码
Code128C条形码介绍
Code128条形码（分为A、B、C三种格式）：
具体信息参阅条码标准；
- Code128C 的优势
Code128C可容纳数据长度与Code128标准一致；
Code128C条形码相比同数据量的Code128A、B，条码更短（显示、打印具有独特的优势）。 - Code128C 的局限
Code128C 条码只能容纳0~9的数字字符；
Code128C 条码只能容纳偶数位长度字符。 - Code128C 的结构
Code128C和其他条码一样，居右头标记、校验位、尾标记；
数据段以每两位字符为一个数据单位进行编码。
-Code128C 生成原理
根据编码规则，处理数据，每两位为一个数据元素，切记偶数位长度纯数字字符才能生成Code128C条形码！！
Java生成Code128C条码图片（Bitmap）
import android.graphics.Bitmap;
import android.graphics.Color;
public class CodeCreater128C {
/**
* 生成Code128C格式条形码（纯数字，偶数位长度）
*
* @param content 条码内容（偶数位纯数字内容）
* @param widthScale(1-10, 默认2，)
* @param height 条码高度(40-200,默认100)
* @return
*/
public static Bitmap create128CBitmap(String content, int widthScale, int height) {
if (content == null || content.length() == 0) {
return null;
}
if (height<40||height>200) {
height = 100;
}
if ((content.length() % 2) == 1) {
return null;
}
for (int i = 0; i < content.length(); i++) {
char charFlag = content.charAt(i);
if (charFlag > 57 || charFlag < 48) {
return null;
}
}
String text = CodeSymbol128C.SYMBOL_START_C.getSymbolValue(); // 获取开始位
int examine = 105;
int count = 0;
while (content.length() != 0) {
int tempValue = Integer.valueOf(content.subSequence(0, 2).toString());
text += CodeSymbol128C.getTargetSymbolValue(tempValue);
examine += tempValue * ++count;
content = content.substring(2);
}
examine = examine % 103; // 获得严效位
text += CodeSymbol128C.getTargetSymbolValue(examine); // 获取严效位
text += CodeSymbol128C.SYMBOL_STOP.getSymbolValue(); // 结束位
return getImageFrom128CSymbols(text, widthScale, height);
}
private static Bitmap getImageFrom128CSymbols(String symbolsStr, int barSizeScale, int bitmapHeight) {
if (barSizeScale < 1 || barSizeScale > 8) {
barSizeScale = 2;
}
byte[] symbols = symbolsStr.getBytes();
int width = 0;
for (int i = 0; i < symbols.length; i++) {
width += (symbols[i] - 48) * barSizeScale;
}
Bitmap barCodeBitmap = Bitmap.createBitmap(width, bitmapHeight, Bitmap.Config.ARGB_8888);
int offset = 0;
for (int i = 0; i < symbols.length; i++) {
int barElementWidth = (symbols[i] - 48) * barSizeScale; // 获取元素宽度
if (!((i & 1) == 0)) { // 偶数位
for (int j = 0; j < barElementWidth; j++) {
// 图元列循环
for (int k = 0; k < bitmapHeight; k++) {
// 图元列像素循环
barCodeBitmap.setPixel((offset + j), k, Color.WHITE);
}
}
} else {
// 奇数位
for (int j = 0; j < barElementWidth; j++) {
// 图元列循环
for (int k = 0; k < bitmapHeight; k++) {
// 图元列像素循环
barCodeBitmap.setPixel((offset + j), k, Color.BLACK);
}
}
}
// _Garphics.(_Pen, new Point(_LenEx, 0), new Point(_LenEx,
// m_Height));
offset += barElementWidth;
}
return barCodeBitmap;
}
private enum CodeSymbol128C {
SYMBOL_00(0, "212222"),
SYMBOL_01(1, "222122"),
SYMBOL_02(2, "222221"),
SYMBOL_03(3, "121223"),
SYMBOL_04(4, "121322"),
SYMBOL_05(5, "131222"),
SYMBOL_06(6, "122213"),
SYMBOL_07(7, "122312"),
SYMBOL_08(8, "132212"),
SYMBOL_09(9, "221213"),
SYMBOL_10(10, "221312"),
SYMBOL_11(11, "231212"),
SYMBOL_12(12, "112232"),
SYMBOL_13(13, "122132"),
SYMBOL_14(14, "122231"),
SYMBOL_15(15, "113222"),
SYMBOL_16(16, "123122"),
SYMBOL_17(17, "123221"),
SYMBOL_18(18, "223211"),
SYMBOL_19(19, "221132"),
SYMBOL_20(20, "221231"),
SYMBOL_21(21, "213212"),
SYMBOL_22(22, "223112"),
SYMBOL_23(23, "312131"),
SYMBOL_24(24, "311222"),
SYMBOL_25(25, "321122"),
SYMBOL_26(26, "321221"),
SYMBOL_27(27, "312212"),
SYMBOL_28(28, "322112"),
SYMBOL_29(29, "322211"),
SYMBOL_30(30, "212123"),
SYMBOL_31(31, "212321"),
SYMBOL_32(32, "232121"),
SYMBOL_33(33, "111323"),
SYMBOL_34(34, "131123"),
SYMBOL_35(35, "131321"),
SYMBOL_36(36, "112313"),
SYMBOL_37(37, "132113"),
SYMBOL_38(38, "132311"),
SYMBOL_39(39, "211313"),
SYMBOL_40(40, "231113"),
SYMBOL_41(41, "231311"),
SYMBOL_42(42, "112133"),
SYMBOL_43(43, "112331"),
SYMBOL_44(44, "132131"),
SYMBOL_45(45, "113123"),
SYMBOL_46(46, "113321"),
SYMBOL_47(47, "133121"),
SYMBOL_48(48, "313121"),
SYMBOL_49(49, "211331"),
SYMBOL_50(50, "231131"),
SYMBOL_51(51, "213113"),
SYMBOL_52(52, "213311"),
SYMBOL_53(53, "213131"),
SYMBOL_54(54, "311123"),
SYMBOL_55(55, "311321"),
SYMBOL_56(56, "331121"),
SYMBOL_57(57, "312113"),
SYMBOL_58(58, "312311"),
SYMBOL_59(59, "332111"),
SYMBOL_60(60, "314111"),
SYMBOL_61(61, "221411"),
SYMBOL_62(62, "431111"),
SYMBOL_63(63, "111224"),
SYMBOL_64(64, "111422"),
SYMBOL_65(65, "121124"),
SYMBOL_66(66, "121421"),
SYMBOL_67(67, "141122"),
SYMBOL_68(68, "141221"),
SYMBOL_69(69, "112214"),
SYMBOL_70(70, "112412"),
SYMBOL_71(71, "122114"),
SYMBOL_72(72, "122411"),
SYMBOL_73(73, "142112"),
SYMBOL_74(74, "142211"),
SYMBOL_75(75, "241211"),
SYMBOL_76(76, "221114"),
SYMBOL_77(77, "413111"),
SYMBOL_78(78, "241112"),
SYMBOL_79(79, "134111"),
SYMBOL_80(80, "111242"),
SYMBOL_81(81, "121142"),
SYMBOL_82(82, "121241"),
SYMBOL_83(83, "114212"),
SYMBOL_84(84, "124112"),
SYMBOL_85(85, "124211"),
SYMBOL_86(86, "411212"),
SYMBOL_87(87, "421112"),
SYMBOL_88(88, "421211"),
SYMBOL_89(89, "212141"),
SYMBOL_90(90, "214121"),
SYMBOL_91(91, "412121"),
SYMBOL_92(92, "111143"),
SYMBOL_93(93, "111341"),
SYMBOL_94(94, "131141"),
SYMBOL_95(95, "114113"),
SYMBOL_96(96, "114311"),
SYMBOL_97(97, "411113"),
SYMBOL_98(98, "411311"),
SYMBOL_99(99, "113141"),
// 以下为标志位
SYMBOL_START_A(103, "211412"),
SYMBOL_START_B(104, "211214"),
SYMBOL_START_C(105, "211232"),
SYMBOL_STOP(106, "2331112");
private int codeValue;
private String symbolValue;
private CodeSymbol128C(int codeValue, String symbolValue) {
this.codeValue = codeValue;
this.symbolValue = symbolValue;
}
public String getSymbolValue() {
return this.symbolValue;
}
public static String getTargetSymbolValue(int codeValue) {
return CodeSymbol128C.valueOf("SYMBOL_" + (codeValue < 10 ? "0" : "") + codeValue).getSymbolValue();
}
}
}