</pre><p>给大家带来一个生成带logo的二维码，代码中我以标注注释，如果要用的朋友们，只需要修改图片路径和网页路径就可以了。</p><p><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 1.875; font-size: 14px;">1、需要jar包：Zxing和QRCode的jar包、、</div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 1.875; font-size: 14px;">2、创建类ZXingCode和Base64</div><pre name="code" class="java">import ;
import ;
import .Graphics2D;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
public class ZXingCode {
private static final int QRCOLOR = 0xFF000000; //默认是黑色
private static final int BGWHITE = 0xFFFFFFFF; //背景颜色
public static void main(String[] args) throws WriterException
{
try
{
getLogoQRCode("http:///make/aqs/", null, "");<span style="font-size:14px;color:#00cccc;"><strong>//这里表示扫描二维码后出现的网页，只需要把网址放上就可以了</strong></span>
}
catch (Exception e)
{
();
}
}
/** * 生成带logo的二维码图片 * * @param qrPic * @param logoPic */
public static String getLogoQRCode(String qrUrl,HttpServletRequest request,String productName)
{
// String filePath = ().getServletContext().getRealPath("/") + "images/";
//filePath是二维码logo的路径，但是实际中我们是放在项目的某个路径下面的，所以路径用上面的，把下面的注释就好
String filePath = "C:/Users/Administrator/Desktop/"; //TODO<span style="color:#00cccc;"> <strong><span style="font-size:14px;">这里放的是你本地的图片路径</span></strong></span>
String content = qrUrl;
try
{
ZXingCode zp = new ZXingCode();
BufferedImage bim = zp.getQR_CODEBufferedImage(content, BarcodeFormat.QR_CODE, 400, 400, ());
return zp.addLogo_QRCode(bim, new File(filePath), new LogoConfig(), productName);
}
catch (Exception e)
{
();
}
return null;
}
/** * 给二维码图片添加Logo * * @param qrPic * @param logoPic */
public String addLogo_QRCode(BufferedImage bim, File logoPic, LogoConfig logoConfig, String productName)
{
try
{
/** * 读取二维码图片，并构建绘图对象 */
BufferedImage image = bim;
Graphics2D g = ();
/** * 读取Logo图片 */
BufferedImage logo = (logoPic);
/** * 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码 */
int widthLogo = (null)>()*2/10?(()*2/10):(null),
heightLogo = (null)>()*3/10?(()*3/10):(null);
/** * logo放在中心 */
int x = (() - widthLogo) / 2;
int y = (() - heightLogo) / 2;
/** * logo放在右下角 * int x = (() - widthLogo); * int y = (() - heightLogo); */
//开始绘制图片
(logo, x, y, widthLogo, heightLogo, null);
// (x, y, widthLogo, heightLogo, 15, 15);
// (new BasicStroke(()));
// (());
// (x, y, widthLogo, heightLogo);
();
//把商品名称添加上去，商品名称不要太长哦，这里最多支持两行。太长就会自动截取啦
if (productName != null && !("")) {
//新的图片，把带logo的二维码下面加上文字
BufferedImage outImage = new BufferedImage(400, 445, BufferedImage.TYPE_4BYTE_ABGR);
Graphics2D outg = ();
//画二维码到新的面板
(image, 0, 0, (), (), null);
//画文字到新的面板
();
(new Font("宋体",,30)); //字体、字型、字号
int strWidth = ().stringWidth(productName);
if (strWidth > 399) {
// //长度过长就截取前面部分
// (productName, 0, () + (() - ())/2 + 5 ); //画文字
//长度过长就换行
String productName1 = (0, ()/2);
String productName2 = (()/2, ());
int strWidth1 = ().stringWidth(productName1);
int strWidth2 = ().stringWidth(productName2);
(productName1, 200 - strWidth1/2, () + (() - ())/2 + 12 );
BufferedImage outImage2 = new BufferedImage(400, 485, BufferedImage.TYPE_4BYTE_ABGR);
Graphics2D outg2 = ();
(outImage, 0, 0, (), (), null);
();
(new Font("宋体",,30)); //字体、字型、字号
(productName2, 200 - strWidth2/2, () + (() - ())/2 + 5 );
();
();
outImage = outImage2;
}else {
(productName, 200 - strWidth/2 , () + (() - ())/2 + 12 ); //画文字
}
();
();
image = outImage;
}
();
();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
();
(image, "png", baos);
//二维码生成的路径，但是实际项目中，我们是把这生成的二维码显示到界面上的，因此下面的折行代码可以注释掉
//可以看到这个方法最终返回的是这个二维码的imageBase64字符串
//前端用 <img src="data:image/png;base64,${imageBase64QRCode}"/> 其中${imageBase64QRCode}对应二维码的imageBase64字符串
(image, "png", new File("C:/Users/Administrator/Desktop/TDC-" + new Date().getTime() + "")); //TODO
String imageBase64QRCode = Base64.byteArrayToBase64(());
();
return imageBase64QRCode;
}
catch (Exception e)
{
();
}
return null;
}
/** * 构建初始化二维码 * * @param bm * @return */
public BufferedImage fileToBufferedImage(BitMatrix bm)
{
BufferedImage image = null;
try
{
int w = (), h = ();
image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
for (int x = 0; x < w; x++)
{
for (int y = 0; y < h; y++)
{
(x, y, (x, y) ? 0xFF000000 : 0xFFCCDDEE);
}
}
}
catch (Exception e)
{
();
}
return image;
}
/** * 生成二维码bufferedImage图片 * * @param content * 编码内容 * @param barcodeFormat * 编码类型 * @param width * 图片宽度 * @param height * 图片高度 * @param hints * 设置参数 * @return */
public BufferedImage getQR_CODEBufferedImage(String content, BarcodeFormat barcodeFormat, int width, int height, Map<EncodeHintType, ?> hints)
{
MultiFormatWriter multiFormatWriter = null;
BitMatrix bm = null;
BufferedImage image = null;
try
{
multiFormatWriter = new MultiFormatWriter();
// 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
bm = (content, barcodeFormat, width, height, hints);
int w = ();
int h = ();
image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
// 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色
for (int x = 0; x < w; x++)
{
for (int y = 0; y < h; y++)
{
(x, y, (x, y) ? QRCOLOR : BGWHITE);
}
}
}
catch (WriterException e)
{
();
}
return image;
}
/** * 设置二维码的格式参数 * * @return */
public Map<EncodeHintType, Object> getDecodeHintType()
{
// 用于设置QR二维码参数
Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
// 设置QR二维码的纠错级别（H为*别）具体级别信息
(EncodeHintType.ERROR_CORRECTION, );
// 设置编码方式
(EncodeHintType.CHARACTER_SET, "utf-8");
(, 0);
(EncodeHintType.MAX_SIZE, 350);
(EncodeHintType.MIN_SIZE, 100);
return hints;
}
}
class LogoConfig
{
// logo默认边框颜色
public static final Color DEFAULT_BORDERCOLOR = ;
// logo默认边框宽度
public static final int DEFAULT_BORDER = 2;
// logo大小默认为照片的1/5
public static final int DEFAULT_LOGOPART = 5;
private final int border = DEFAULT_BORDER;
private final Color borderColor;
private final int logoPart;
/** * Creates a default config with on color {@link #BLACK} and off color * {@link #WHITE}, generating normal black-on-white barcodes. */
public LogoConfig()
{
this(DEFAULT_BORDERCOLOR, DEFAULT_LOGOPART);
}
public LogoConfig(Color borderColor, int logoPart)
{
= borderColor;
= logoPart;
}
public Color getBorderColor()
{
return borderColor;
}
public int getBorder()
{
return border;
}
public int getLogoPart()
{
return logoPart;
}
}
public class Base64 {
private static final char intToBase64[] = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x',
'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', '+', '/'
};
private static final char intToAltBase64[] = {
'!', '"', '#', '$', '%', '&', '\'', '(', ')', ',',
'-', '.', ':', ';', '<', '>', '@', '[', ']', '^',
'`', '_', '{', '|', '}', '~', 'a', 'b', 'c', 'd',
'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x',
'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', '+', '?'
};
private static final byte base64ToInt[] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, 62, -1, -1, -1, 63, 52, 53,
54, 55, 56, 57, 58, 59, 60, 61, -1, -1,
-1, -1, -1, -1, -1, 0, 1, 2, 3, 4,
5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, -1, -1, -1, -1, -1, -1, 26, 27, 28,
29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51
};
private static final byte altBase64ToInt[] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, 0, 1, 2, 3, 4, 5, 6,
7, 8, -1, 62, 9, 10, 11, -1, 52, 53,
54, 55, 56, 57, 58, 59, 60, 61, 12, 13,
14, -1, 15, 63, 16, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, 17, -1, 18, 19, 21, 20, 26, 27, 28,
29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51, 22, 23, 24, 25
};
public static String byteArrayToBase64(byte bb[]) {
return byteArrayToBase64(bb, false);
}
public static String byteArrayToAltBase64(byte bb[]) {
return byteArrayToBase64(bb, true);
}
private static String byteArrayToBase64(byte bb[], boolean flag) {
int i = ;
int j = i / 3;
int k = i - 3 * j;
int l = 4 * ((i + 2) / 3);
StringBuffer stringbuffer = new StringBuffer(l);
char ac[] = flag ? intToAltBase64 : intToBase64;
int i1 = 0;
for(int j1 = 0; j1 < j; j1++) {
int k1 = bb[i1++] & 0xff;
int i2 = bb[i1++] & 0xff;
int k2 = bb[i1++] & 0xff;
(ac[k1 >> 2]);
(ac[k1 << 4 & 0x3f | i2 >> 4]);
(ac[i2 << 2 & 0x3f | k2 >> 6]);
(ac[k2 & 0x3f]);
}
if(k != 0) {
int l1 = bb[i1++] & 0xff;
(ac[l1 >> 2]);
if(k == 1) {
(ac[l1 << 4 & 0x3f]);
("==");
} else {
int j2 = bb[i1++] & 0xff;
(ac[l1 << 4 & 0x3f | j2 >> 4]);
(ac[j2 << 2 & 0x3f]);
('=');
}
}
return ();
}
public static byte[] base64ToByteArray(String s) {
return base64ToByteArray(s, false);
}
public static byte[] altBase64ToByteArray(String s) {
return base64ToByteArray(s, true);
}
private static byte[] base64ToByteArray(String s, boolean flag) {
byte bb[] = flag ? altBase64ToInt : base64ToInt;
int i = ();
int j = i / 4;
if(4 * j != i)
throw new IllegalArgumentException("String length must be a multiple of four.");
int k = 0;
int l = j;
if(i != 0) {
if((i - 1) == '=') {
k++;
l--;
}
if((i - 2) == '=')
k++;
}
byte bc[] = new byte[3 * j - k];
int i1 = 0;
int j1 = 0;
for(int k1 = 0; k1 < l; k1++) {
int l1 = base64toInt((i1++), bb);
int j2 = base64toInt((i1++), bb);
int l2 = base64toInt((i1++), bb);
int j3 = base64toInt((i1++), bb);
bc[j1++] = (byte)(l1 << 2 | j2 >> 4);
bc[j1++] = (byte)(j2 << 4 | l2 >> 2);
bc[j1++] = (byte)(l2 << 6 | j3);
}
if(k != 0) {
int i2 = base64toInt((i1++), bb);
int k2 = base64toInt((i1++), bb);
bc[j1++] = (byte)(i2 << 2 | k2 >> 4);
if(k == 1) {
int i3 = base64toInt((i1++), bb);
bc[j1++] = (byte)(k2 << 4 | i3 >> 2);
}
}
return bc;
}
private static int base64toInt(char c, byte bb[]) {
byte b = bb[c];
if(b < 0)
throw new IllegalArgumentException("Illegal character " + c);
else
return b;
}
}
