二维码识别

我会带着你远行 2022-05-16 16:04 267阅读 0赞

jar包

![20181031174512230.png][]

![20181031174521889.png][]

![20181031174529549.png][]

import java.awt.image.BufferedImage;  
import java.io.ByteArrayInputStream;  
import java.io.File;  
import java.io.IOException;  
import java.util.HashMap;  
import java.util.Map;

import javax.imageio.ImageIO;

import com.google.zxing.Binarizer;  
import com.google.zxing.BinaryBitmap;  
import com.google.zxing.DecodeHintType;  
import com.google.zxing.LuminanceSource;  
import com.google.zxing.MultiFormatReader;  
import com.google.zxing.NotFoundException;  
import com.google.zxing.Result;  
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;  
import com.google.zxing.common.HybridBinarizer;

import sun.misc.BASE64Decoder;

/\*\*  
 \*   
 \* 作用：二维码识别（图片）

\*   
 \* 作者：Yechenglang  
 \*   
 \* 时间：2018-10  
 \*   
 \* 类名：QRCodeTools  
 \*   
 \*\*/

public class QRCodeTools \{

/\*\*  
     \*   
     \* 解析二维码解析,此方法是解析Base64格式二维码图片  
     \*   
     \* baseStr:base64字符串,data:image/png;base64开头的  
     \*   
     \*/

public static String deEncodeByBase64(String baseStr) \{

String content = null;

BufferedImage image;

BASE64Decoder decoder = new BASE64Decoder();

byte\[\] b = null;

try \{

int i = baseStr.indexOf("data:image/png;base64,");

baseStr = baseStr.substring(i + "data:image/png;base64,".length());// 去掉base64图片的data:image/png;base64,部分才能转换为byte\[\]

b = decoder.decodeBuffer(baseStr);// baseStr转byte\[\]

ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(b);// byte\[\]  
                                                                                    // 转BufferedImage

image = ImageIO.read(byteArrayInputStream);

LuminanceSource source = new BufferedImageLuminanceSource(image);

Binarizer binarizer = new HybridBinarizer(source);

BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);

Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>();

hints.put(DecodeHintType.CHARACTER\_SET, "UTF-8");

Result result = new MultiFormatReader().decode(binaryBitmap, hints);// 解码

System.out.println("图片中内容：  ");

System.out.println("content： " + result.getText());

content = result.getText();

\} catch (IOException e) \{

e.printStackTrace();

\} catch (NotFoundException e) \{

e.printStackTrace();

return content;

/\*\*  
     \*   
     \* 解析二维码,此方法解析一个路径的二维码图片  
     \*   
     \* path:图片路径  
     \*   
     \*/

public static String deEncodeByPath(String path) \{

String content = null;

BufferedImage image;

try \{

image = ImageIO.read(new File(path));

LuminanceSource source = new BufferedImageLuminanceSource(image);

Binarizer binarizer = new HybridBinarizer(source);

BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);

Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>();

hints.put(DecodeHintType.CHARACTER\_SET, "UTF-8");

Result result = new MultiFormatReader().decode(binaryBitmap, hints);// 解码

System.out.println("图片中内容：  ");

System.out.println("content： " + result.getText());

content = result.getText();

\} catch (IOException e) \{

e.printStackTrace();

\} catch (NotFoundException e) \{

e.printStackTrace();

return content;

public static void main(String\[\] args) \{  
        deEncodeByPath("d:\\\\c.jpg");  
    \}  
      
\}

[20181031174512230.png]: /images/20220503/e78a3106fb7e43ac80b2bd373eed1654.png
[20181031174521889.png]: /images/20220503/655431ad6ab34f5f9a7211ff1fdfc871.png
[20181031174529549.png]: /images/20220503/2cbdd21880c342489f83855820cf7146.png