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  • 几种验证码的生成

    通过barcode4j生成
    Java代码 复制代码 收藏代码
    1. @Controller  
    2. @RequestMapping("/bar/{code}")   
    3. public class BarCodeController {   
    4.     @RequestMapping(method = RequestMethod.GET)   
    5.     public void show(@PathVariable("code") String code,   
    6.             HttpServletRequest request, HttpServletResponse response)   
    7.             throws ConfigurationException, BarcodeException, IOException {   
    8.         DefaultConfiguration cfg = new DefaultConfiguration("barcode");   
    9.         DefaultConfiguration child = new DefaultConfiguration("datamatrix"); //code128   
    10.         DefaultConfiguration attr;   
    11.         //attr= new DefaultConfiguration("height");   
    12.         //attr.setValue("10");   
    13.         cfg.addChild(child);   
    14.         //child.addChild(attr);   
    15.         attr = new DefaultConfiguration("module-width");   
    16.         attr.setValue("0.6");   
    17.         child.addChild(attr);   
    18.         int orientation = 0;   
    19.          int resolution = 300;    
    20.             
    21.         BarcodeUtil util = BarcodeUtil.getInstance();   
    22.         BarcodeGenerator gen = util.createBarcodeGenerator(cfg);   
    23.   
    24.         ByteArrayOutputStream bout = new ByteArrayOutputStream(4096);   
    25.   
    26.            
    27.         BitmapCanvasProvider bitmap = new BitmapCanvasProvider(bout,   
    28.                 MimeTypes.MIME_JPEG, resolution, BufferedImage.TYPE_BYTE_BINARY,   
    29.                 false, orientation);   
    30.         gen.generateBarcode(bitmap,code);   
    31.         try {   
    32.             bitmap.finish();   
    33.         } catch (IOException e) {   
    34.         } finally {   
    35.             try {   
    36.                 bout.close();   
    37.             } catch (IOException e) {   
    38.             }   
    39.         }   
    40.         response.setContentType(MimeTypes.MIME_JPEG);   
    41.         response.setContentLength(bout.size());   
    42.         response.getOutputStream().write(bout.toByteArray());   
    43.         response.getOutputStream().flush();   
    44.     }   
    45. }  
    @Controller
@RequestMapping("/bar/{code}")
public class BarCodeController {
	@RequestMapping(method = RequestMethod.GET)
	public void show(@PathVariable("code") String code,
			HttpServletRequest request, HttpServletResponse response)
			throws ConfigurationException, BarcodeException, IOException {
		DefaultConfiguration cfg = new DefaultConfiguration("barcode");
		DefaultConfiguration child = new DefaultConfiguration("datamatrix"); //code128
		DefaultConfiguration attr;
		//attr= new DefaultConfiguration("height");
		//attr.setValue("10");
		cfg.addChild(child);
		//child.addChild(attr);
		attr = new DefaultConfiguration("module-width");
		attr.setValue("0.6");
		child.addChild(attr);
		int orientation = 0;
		 int resolution = 300; 
		 
		BarcodeUtil util = BarcodeUtil.getInstance();
		BarcodeGenerator gen = util.createBarcodeGenerator(cfg);

		ByteArrayOutputStream bout = new ByteArrayOutputStream(4096);

		
		BitmapCanvasProvider bitmap = new BitmapCanvasProvider(bout,
				MimeTypes.MIME_JPEG, resolution, BufferedImage.TYPE_BYTE_BINARY,
				false, orientation);
		gen.generateBarcode(bitmap,code);
		try {
			bitmap.finish();
		} catch (IOException e) {
		} finally {
			try {
				bout.close();
			} catch (IOException e) {
			}
		}
		response.setContentType(MimeTypes.MIME_JPEG);
		response.setContentLength(bout.size());
		response.getOutputStream().write(bout.toByteArray());
		response.getOutputStream().flush();
	}
}

    通过zxing生成
    Java代码 复制代码 收藏代码
    1. package gov.rsj.controller;    
    2.   
    3. import java.io.IOException;   
    4.   
    5. import javax.servlet.http.HttpServletRequest;   
    6. import javax.servlet.http.HttpServletResponse;   
    7.   
    8. import org.springframework.stereotype.Controller;   
    9. import org.springframework.web.bind.annotation.PathVariable;   
    10. import org.springframework.web.bind.annotation.RequestMapping;   
    11. import org.springframework.web.bind.annotation.RequestMethod;   
    12.   
    13. import com.google.zxing.BarcodeFormat;   
    14. import com.google.zxing.WriterException;   
    15. import com.google.zxing.client.j2se.MatrixToImageWriter;   
    16. import com.google.zxing.common.BitMatrix;   
    17. import com.google.zxing.qrcode.QRCodeWriter;   
    18.   
    19. /**   
    20.  * @author fox   
    21.  * @date 2012-3-22 下午3:12:33   
    22.  * @version 1.0  
    23.  * @description QRCODE 条形码  需要javase.jar和core.jar两个包  
    24.  */  
    25. @Controller  
    26. @RequestMapping("/qrbar/{code}")   
    27. public class QrBarCodeController {   
    28.     @RequestMapping(method = RequestMethod.GET)   
    29.     public void show(@PathVariable("code") String code,   
    30.             HttpServletRequest request, HttpServletResponse response){   
    31.         QRCodeWriter writer = new QRCodeWriter();   
    32.         response.setHeader("Pragma", "No-cache");   
    33.         response.setHeader("Cache-Control", "no-cache");   
    34.         response.setDateHeader("Expires", 0);   
    35.         response.setContentType("image/jpeg");   
    36.         BitMatrix bitMatrix = null;   
    37.         try {   
    38.             bitMatrix = writer.encode(code, BarcodeFormat.QR_CODE, 300, 300);   
    39.             MatrixToImageWriter.writeToStream(bitMatrix, "jpeg", response.getOutputStream());   
    40.             response.getOutputStream().flush();   
    41.             response.getOutputStream().close();   
    42.         } catch (WriterException e) {   
    43.             e.printStackTrace();   
    44.         } catch (IOException e) {   
    45.             e.printStackTrace();   
    46.         }   
    47.            
    48.            
    49.     }   
    50. }  
    package gov.rsj.controller; 

import java.io.IOException;

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

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;

/** 
 * @author fox 
 * @date 2012-3-22 下午3:12:33 
 * @version 1.0
 * @description QRCODE 条形码  需要javase.jar和core.jar两个包
 */
@Controller
@RequestMapping("/qrbar/{code}")
public class QrBarCodeController {
	@RequestMapping(method = RequestMethod.GET)
	public void show(@PathVariable("code") String code,
			HttpServletRequest request, HttpServletResponse response){
		QRCodeWriter writer = new QRCodeWriter();
		response.setHeader("Pragma", "No-cache");
		response.setHeader("Cache-Control", "no-cache");
		response.setDateHeader("Expires", 0);
		response.setContentType("image/jpeg");
        BitMatrix bitMatrix = null;
        try {
            bitMatrix = writer.encode(code, BarcodeFormat.QR_CODE, 300, 300);
            MatrixToImageWriter.writeToStream(bitMatrix, "jpeg", response.getOutputStream());
            response.getOutputStream().flush();
            response.getOutputStream().close();
        } catch (WriterException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
		
	}
}
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  • 原文地址：https://www.cnblogs.com/jston/p/2883460.html
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