java zxing 一维码二维码 实例

<!-- 一维码 二维码 -->
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>2.2</version>
</dependency>

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.opensymphony.xwork2.ActionSupport;
import org.apache.log4j.Logger;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionContext;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;

import java.io.IOException;

import javax.imageio.ImageIO;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
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.oned.Code128Writer;
import com.google.zxing.qrcode.QRCodeWriter;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

/**
*
* @author hongwang.zhang 20150813
*
*/
@ParentPackage("struts-default")
@Controller("qrCodeAction")
@Scope("prototype")
public class QrCodeAction extends ExternalBaseAjaxAction {

/**
*
*/
private static final long serialVersionUID = 3472734690385818126L;

private static Logger logger = Logger.getLogger(QrCodeAction.class);

private String keycode;

private String width;

private String size;

private String height;

private static final String IMAGETYPE = "png";

@Action(value="odc")
public void barCode(){
try {
BarCode(request, response, keycode, width, height);
} catch (ServletException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

@Action(value="tdc")
public void qrCode(){
try {
QrCode(request, response, keycode, size);
} catch (Exception e) {
// TODO: handle exception
}
}

public static void BarCode(HttpServletRequest req, HttpServletResponse resp,String keycode,String mwidth, String mheight)
throws ServletException, IOException {
if (keycode != null && !"".equals(keycode)) {
ServletOutputStream stream = null;
try {
Code128Writer writer = new Code128Writer();
int width=180;
int height=60;
if (mwidth != null && !"".equals(mwidth.trim())) {
try{
width=Integer.valueOf(mwidth);
} catch (NumberFormatException e) {
//TODO output to log
}
}
if (mheight != null && !"".equals(mheight.trim())) {
try{
height = Integer.valueOf(mheight);
} catch (NumberFormatException e) {
//TODO output to log
}
}
int codeWidth = 3 + // start guard
(7 * 6) + // left bars
5 + // middle guard
(7 * 6) + // right bars
3; // end guard
codeWidth = Math.max(codeWidth, width);
stream = resp.getOutputStream();
BitMatrix bitMatrix = new MultiFormatWriter().encode(keycode,
BarcodeFormat.CODE_128, codeWidth, height, null);

MatrixToImageWriter.writeToStream(bitMatrix, IMAGETYPE,
stream);

} catch (WriterException e) {
e.printStackTrace();
} finally {
if (stream != null) {
stream.flush();
stream.close();
}
}
}
}

public static void QrCode(HttpServletRequest req, HttpServletResponse resp,String keycode,String msize){
if (keycode != null && !"".equals(keycode)) {
ServletOutputStream stream = null;
try {
int size=129;//Ĭ�϶�ά���С
if (msize != null && !"".equals(msize.trim())) {
try{
size=Integer.valueOf(msize);
} catch (NumberFormatException e) {
//TODO output to log
}
}
stream = resp.getOutputStream();
QRCodeWriter writer = new QRCodeWriter();
BitMatrix m = writer.encode(keycode, BarcodeFormat.QR_CODE, size, size);
MatrixToImageWriter.writeToStream(m, IMAGETYPE, stream);
} catch (WriterException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (stream != null) {
try {
stream.flush();
stream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
}
}
}
public void setKeycode(String keycode) {
if(keycode != null){
keycode = keycode.replace("-","");
}
this.keycode = keycode;
}

public String getWidth() {
return width;
}

public void setWidth(String width) {
this.width = width;
}

public String getSize() {
return size;
}

public void setSize(String size) {
this.size = size;
}

public String getHeight() {
return height;
}

public void setHeight(String height) {
this.height = height;
}
}