1. [图片] 11111111.png
[java]
package
org.lxh;
import
com.google.zxing.common.BitMatrix;
import
javax.imageio.ImageIO;
import
java.io.File;
import
java.io.OutputStream;
import
java.io.IOException;
import
java.awt.image.BufferedImage;
public
final
class
MatrixToImageWriter {
private
static
final
int
BLACK =
0xFF000000
;
private
static
final
int
WHITE =
0xFFFFFFFF
;
private
MatrixToImageWriter() {}
public
static
BufferedImage toBufferedImage(BitMatrix matrix) {
int
width = matrix.getWidth();
int
height = matrix.getHeight();
BufferedImage image =
new
BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
for
(
int
x =
0
; x < width; x++) {
for
(
int
y =
0
; y < height; y++) {
image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
}
}
return
image;
}
public
static
void
writeToFile(BitMatrix matrix, String format, File file)
throws
IOException {
BufferedImage image = toBufferedImage(matrix);
if
(!ImageIO.write(image, format, file)) {
throw
new
IOException(
"Could not write an image of format "
+ format +
" to "
+ file);
}
}
public
static
void
writeToStream(BitMatrix matrix, String format, OutputStream stream)
throws
IOException {
BufferedImage image = toBufferedImage(matrix);
if
(!ImageIO.write(image, format, stream)) {
throw
new
IOException(
"Could not write an image of format "
+ format);
}
}
}
package
org.lxh;
import
com.google.zxing.common.BitMatrix;
import
javax.imageio.ImageIO;
import
java.io.File;
import
java.io.OutputStream;
import
java.io.IOException;
import
java.awt.image.BufferedImage;
public
final
class
MatrixToImageWriter {
private
static
final
int
BLACK =
0xFF000000
;
private
static
final
int
WHITE =
0xFFFFFFFF
;
private
MatrixToImageWriter() {}
public
static
BufferedImage toBufferedImage(BitMatrix matrix) {
int
width = matrix.getWidth();
int
height = matrix.getHeight();
BufferedImage image =
new
BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
for
(
int
x =
0
; x < width; x++) {
for
(
int
y =
0
; y < height; y++) {
image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
}
}
return
image;
}
public
static
void
writeToFile(BitMatrix matrix, String format, File file)
throws
IOException {
BufferedImage image = toBufferedImage(matrix);
if
(!ImageIO.write(image, format, file)) {
throw
new
IOException(
"Could not write an image of format "
+ format +
" to "
+ file);
}
}
public
static
void
writeToStream(BitMatrix matrix, String format, OutputStream stream)
throws
IOException {
BufferedImage image = toBufferedImage(matrix);
if
(!ImageIO.write(image, format, stream)) {
throw
new
IOException(
"Could not write an image of format "
+ format);
}
}
}
4
.借助上面的类生成二维码
[java]
package
org.lxh;
import
java.io.File;
import
java.util.Hashtable;
import
com.google.zxing.BarcodeFormat;
import
com.google.zxing.EncodeHintType;
import
com.google.zxing.MultiFormatWriter;
import
com.google.zxing.WriterException;
import
com.google.zxing.common.BitMatrix;
public
class
Test {
/**
* @param args
* @throws Exception
*/
public
static
void
main(String[] args)
throws
Exception {
String text =
"http://www.ablanxue.com"
;
int
width =
300
;
int
height =
300
;
//二维码的图片格式
String format =
"gif"
;
Hashtable hints =
new
Hashtable();
//内容所使用编码
hints.put(EncodeHintType.CHARACTER_SET,
"utf-8"
);
BitMatrix bitMatrix =
new
MultiFormatWriter()。encode(text,
BarcodeFormat.QR_CODE, width, height, hints);
//生成二维码
File outputFile =
new
File(
"d:"
+File.separator+
"new.gif"
);
MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile);
}
}