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借点代码二维码

2015-12-24 00:00 288 查看

import
java.awt.BasicStroke;

import
java.awt.Graphics;

import
java.awt.Graphics2D;

import
java.awt.Image;

import
java.awt.Shape;

import
java.awt.geom.RoundRectangle2D;

import
java.awt.image.BufferedImage;

import
java.io.File;

import
java.io.OutputStream;

import
java.util.Hashtable;

import
java.util.Random;

import
javax.imageio.ImageIO;

import
com.google.zxing.BarcodeFormat;

import
com.google.zxing.BinaryBitmap;

import
com.google.zxing.DecodeHintType;

import
com.google.zxing.EncodeHintType;

import
com.google.zxing.MultiFormatReader;

import
com.google.zxing.MultiFormatWriter;

import
com.google.zxing.Result;

import
com.google.zxing.common.BitMatrix;

import
com.google.zxing.common.HybridBinarizer;

import
com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

/**

*二维码工具类

*

*/

public
class
QRCodeUtil{

private
static
final
StringCHARSET=
"utf-8"
;

private
static
final
StringFORMAT_NAME=
"JPG"
;

//二维码尺寸

private
7fe0

static
final
int
QRCODE_SIZE=
300
;

//LOGO宽度

private
static
final
int
WIDTH=
60
;

//LOGO高度

private
static
final
int
HEIGHT=
60
;

private
static
BufferedImagecreateImage(Stringcontent,StringimgPath,

boolean
needCompress)
throws
Exception{

Hashtable<EncodeHintType,Object>hints=
new
Hashtable<EncodeHintType,Object>();

hints.put(EncodeHintType.ERROR_CORRECTION,ErrorCorrectionLevel.H);

hints.put(EncodeHintType.CHARACTER_SET,CHARSET);

hints.put(EncodeHintType.MARGIN,
1
);

BitMatrixbitMatrix=
new
MultiFormatWriter().encode(content,

BarcodeFormat.QR_CODE,QRCODE_SIZE,QRCODE_SIZE,hints);

int
width=bitMatrix.getWidth();

int
height=bitMatrix.getHeight();

BufferedImageimage=
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,bitMatrix.get(x,y)?
0xFF000000

:
0xFFFFFFFF
);

}

}

if
(imgPath==
null
||
""
.equals(imgPath)){

return
image;

}

//插入图片

QRCodeUtil.insertImage(image,imgPath,needCompress);

return
image;

}

/**

*插入LOGO

*

*@paramsource

*二维码图片

*@paramimgPath

*LOGO图片地址

*@paramneedCompress

*是否压缩

*@throwsException

*/

private
static
void
insertImage(BufferedImagesource,StringimgPath,

boolean
needCompress)
throws
Exception{

Filefile=
new
File(imgPath);

if
(!file.exists()){

System.err.println(
""
+imgPath+
"该文件不存在！"
);

return
;

}

Imagesrc=ImageIO.read(
new
File(imgPath));

int
width=src.getWidth(
null
);

int
height=src.getHeight(
null
);

if
(needCompress){
//压缩LOGO

if
(width>WIDTH){

width=WIDTH;

}

if
(height>HEIGHT){

height=HEIGHT;

}

Imageimage=src.getScaledInstance(width,height,

Image.SCALE_SMOOTH);

BufferedImagetag=
new
BufferedImage(width,height,

BufferedImage.TYPE_INT_RGB);

Graphicsg=tag.getGraphics();

g.drawImage(image,
0
,
0
,
null
);
//绘制缩小后的图

g.dispose();

src=image;

}

//插入LOGO

Graphics2Dgraph=source.createGraphics();

int
x=(QRCODE_SIZE-width)/
2
;

int
y=(QRCODE_SIZE-height)/
2
;

graph.drawImage(src,x,y,width,height,
null
);

Shapeshape=
new
RoundRectangle2D.Float(x,y,width,width,
6
,
6
);

graph.setStroke(
new
BasicStroke(3f));

graph.draw(shape);

graph.dispose();

}

/**

*生成二维码(内嵌LOGO)

*

*@paramcontent

*内容

*@paramimgPath

*LOGO地址

*@paramdestPath

*存放目录

*@paramneedCompress

*是否压缩LOGO

*@throwsException

*/

public
static
void
encode(Stringcontent,StringimgPath,StringdestPath,

boolean
needCompress)
throws
Exception{

BufferedImageimage=QRCodeUtil.createImage(content,imgPath,

needCompress);

mkdirs(destPath);

Stringfile=
new
Random().nextInt(
99999999
)+
".jpg"
;

ImageIO.write(image,FORMAT_NAME,
new
File(destPath+

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