Xml代码
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<
dependency
>
<
groupId
>com.google.zxing</
groupId
>
<
artifactId
>core</
artifactId
>
<
version
>1.7</
version
>
</
dependency
>
<
dependency
>
<
groupId
>com.google.zxing</
groupId
>
<
artifactId
>javase</
artifactId
>
<
version
>1.7</
version
>
</
dependency
>
|
java
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package
util.qrcode;
import
java.awt.image.BufferedImage;
import
java.io.Closeable;
import
java.io.File;
import
java.io.IOException;
import
java.io.InputStream;
import
java.io.OutputStream;
import
java.net.URL;
import
java.util.Hashtable;
import
java.util.List;
import
javax.imageio.ImageIO;
import
com.google.zxing.BarcodeFormat;
import
com.google.zxing.BinaryBitmap;
import
com.google.zxing.EncodeHintType;
import
com.google.zxing.LuminanceSource;
import
com.google.zxing.MultiFormatReader;
import
com.google.zxing.MultiFormatWriter;
import
com.google.zxing.NotFoundException;
import
com.google.zxing.Result;
import
com.google.zxing.WriterException;
import
com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import
com.google.zxing.client.j2se.MatrixToImageWriter;
import
com.google.zxing.common.BitMatrix;
import
com.google.zxing.common.HybridBinarizer;
import
com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
public
class
QRCodeUtils {
/** 私有构造方法 */
private
QRCodeUtils() {
super
(); }
private
static
final
Hashtable<EncodeHintType, Object> ZXING_HINTS;
static
{
ZXING_HINTS =
new
Hashtable<EncodeHintType, Object>();
ZXING_HINTS.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
ZXING_HINTS.put(EncodeHintType.CHARACTER_SET,
"UTF-8"
);
}
public
void
encode(String contents, File file,String filePostfix, BarcodeFormat format,
int
width,
int
height, Map<EncodeHintType, ?> hints) {
Hashtable hintsw =
new
Hashtable();
// 指定纠错等级
hintsw.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
// 指定编码格式
hintsw.put(EncodeHintType.CHARACTER_SET,
"UTF-8"
);
//要使用utf8 才能编码，并解码中文！
try
{
BitMatrix bitMatrix =
new
MultiFormatWriter().encode(contents,
BarcodeFormat.QR_CODE, width, height, ZXING_HINTS);
MatrixToImageWriter.writeToFile(bitMatrix,
"png"
, file);
}
catch
(Exception e) {
e.printStackTrace();
}
}
/**
* 将二维码写入数据流
*
* @param out 数据流
* @param lines 数据
* @param width 二维码宽度
* @param height 二维码高度
*/
public
static
void
writeToOutputStream(OutputStream out, List<String> lines,
int
width,
int
height) {
StringBuilder sb =
new
StringBuilder();
for
(
int
i =
0
; i < lines.size(); i ++) {
sb.append(lines.get(i));
if
(i != lines.size() -
1
) {
sb.append(
"\n"
);
}
}
writeToOutputStream(out, sb.toString(), width, height);
}
/**
* 将二维码写入数据流
*
* @param out 数据流
* @param contents 数据
* @param width 二维码宽度
* @param height 二维码高度
*/
public
static
void
writeToOutputStream(OutputStream out, String contents,
int
width,
int
height) {
try
{
BitMatrix bitMatrix =
new
MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, width, height, ZXING_HINTS);
MatrixToImageWriter.writeToStream(bitMatrix,
"png"
, out);
}
catch
(WriterException e) {
throw
new
RuntimeException(e.getMessage(), e);
}
catch
(IOException e) {
throw
new
RuntimeException(e.getMessage(), e);
}
}
/**
* 将二维码写入文件
*
* @param file 文件
* @param lines 数据
* @param width 二维码宽度
* @param height 二维码高度
*/
public
static
void
writeToFile(File file, List<String> lines,
int
width,
int
height) {
StringBuilder sb =
new
StringBuilder();
for
(
int
i =
0
; i < lines.size(); i ++) {
sb.append(lines.get(i));
if
(i != lines.size() -
1
) {
sb.append(
"\n"
);
}
}
writeToFile(file, sb.toString(), width, height);
}
/**
* 将二维码写入文件
*
* @param file 文件
* @param contents 数据
* @param width 二维码宽度
* @param height 二维码高度
*/
public
static
void
writeToFile(File file, String contents,
int
width,
int
height) {
try
{
BitMatrix bitMatrix =
new
MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, width, height, ZXING_HINTS);
MatrixToImageWriter.writeToFile(bitMatrix,
"png"
, file);
}
catch
(WriterException e) {
throw
new
RuntimeException(e.getMessage(), e);
}
catch
(IOException e) {
throw
new
RuntimeException(e.getMessage(), e);
}
}
/**
* 解析二维码
*
* @param image 图片
* @return 信息
*/
public
static
String decode(BufferedImage image) {
Result result =
null
;
LuminanceSource source =
new
BufferedImageLuminanceSource(image);
BinaryBitmap bitmap =
new
BinaryBitmap(
new
HybridBinarizer(source));
try
{
result =
new
MultiFormatReader().decode(bitmap, ZXING_HINTS);
}
catch
(NotFoundException e) {
throw
new
RuntimeException(e.getMessage(), e);
}
return
result.getText();
}
/**
* 解析二维码
*
* @param file 图片
* @return 信息
*/
public
static
String decode(File file) {
BufferedImage image =
null
;
try
{
image = ImageIO.read(file);
}
catch
(IOException e) {
throw
new
RuntimeException(e.getMessage(), e);
}
return
decode(image);
}
/**
* 解析二维码
*
* @param input 图片
* @return 信息
*/
public
static
String decode(InputStream input) {
BufferedImage image =
null
;
try
{
image = ImageIO.read(input);
}
catch
(IOException e) {
throw
new
RuntimeException(e.getMessage(), e);
}
return
decode(image);
}
/**
* 解析二维码
*
* @param url 图片
* @return 信息
*/
public
static
String decode(URL url) {
BufferedImage image =
null
;
try
{
image = ImageIO.read(url);
}
catch
(IOException e) {
throw
new
RuntimeException(e.getMessage(), e);
}
return
decode(image);
}
/**
* 关闭
*
* @param closeable 关闭对象
*/
public
static
void
closeQuietly(Closeable closeable) {
if
(closeable ==
null
)
return
;
try
{ closeable.close(); }
catch
(Exception e) {}
}
本文转自yunlielai51CTO博客，原文链接：
http://blog.51cto.com/4925054/1354838
，如需转载请自行联系原作者
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