1、生成条码的servlet代码: import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; 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.oned.Code128Writer; /** * @Description: 生成条码(CODE128格式) */ public class BarCode1DServlet extends HttpServlet { /** * @Fields serialVersionUID : defaultserialVersionUID */ privatestatic final long serialVersionUID = 1L; privatestatic final String KEY = "keycode"; privatestatic final String WIDTH = "mwidth"; privatestatic final String HEIGHT = "mheight"; privatestatic final String IMAGETYPE = "JPEG"; @Override protectedvoid doGet(HttpServletRequest req, HttpServletResponse resp) throwsServletException, IOException { Stringkeycode = req.getParameter(KEY); if(keycode != null && !"".equals(keycode)) { ServletOutputStreamstream = null; try{ Code128Writerwriter = new Code128Writer(); intwidth=180; intheight=60; Stringmwidth = req.getParameter(WIDTH); if(mwidth != null && !"".equals(mwidth.trim())) { try{ width=Integer.valueOf(mwidth); }catch (NumberFormatException e) { //TODOoutput to log } } Stringmheight = req.getParameter(HEIGHT); if(mheight != null && !"".equals(mheight.trim())) { try{ height= Integer.valueOf(mheight); }catch (NumberFormatException e) { //TODOoutput to log } } stream= resp.getOutputStream(); BitMatrixm = writer.encode(keycode, BarcodeFormat.CODE_128, width, height); MatrixToImageWriter.writeToStream(m,IMAGETYPE, stream); }catch (WriterException e) { e.printStackTrace(); }finally { if(stream != null) { stream.flush(); stream.close(); } } } } @Override protectedvoid doPost(HttpServletRequest req, HttpServletResponse resp) throwsServletException, IOException { this.doGet(req,resp); } } 生成qrcode二维码的servlet示例 import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; 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; /** * @Description: 生成二维码(QR格式) * @author lwei */ public class BarCode2DServlet extends HttpServlet { /** * @Fields serialVersionUID : serialVersionUID */ privatestatic final long serialVersionUID = 1L; privatestatic final String KEY = "keycode"; privatestatic final String SIZE = "msize"; privatestatic final String IMAGETYPE = "JPEG"; @Override protectedvoid doGet(HttpServletRequest req, HttpServletResponse resp) throwsServletException, IOException { Stringkeycode = req.getParameter(KEY); if(keycode != null && !"".equals(keycode)) { ServletOutputStreamstream = null; try{ intsize=129; Stringmsize = req.getParameter(SIZE); if(msize != null && !"".equals(msize.trim())) { try{ size=Integer.valueOf(msize); }catch (NumberFormatException e) { //TODOoutput to log } } stream= resp.getOutputStream(); QRCodeWriterwriter = new QRCodeWriter(); BitMatrixm = writer.encode(keycode, BarcodeFormat.QR_CODE, size, size); MatrixToImageWriter.writeToStream(m,IMAGETYPE, stream); }catch (WriterException e) { e.printStackTrace(); }finally { if(stream != null) { stream.flush(); stream.close(); } } } } @Override protectedvoid doPost(HttpServletRequest req, HttpServletResponse resp) throwsServletException, IOException { this.doGet(req,resp); } } 3、web.xml中的配置 <servlet> <servlet-name>barCode</servlet-name> <servlet-class>com.XXX.XXX.common.servlet.BarCode1DServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>barCode</servlet-name> <url-pattern>/barCode</url-pattern> </servlet-mapping> <servlet> <servlet-name>qrCode</servlet-name> <servlet-class>com.XXX.XXX.common.servlet.BarCode2DServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>qrCode</servlet-name> <url-pattern>/qrCode</url-pattern> </servlet-mapping> 4、页面引用 <img alt="条码"src="${pageContext.request.contextPath}/barCode?keycode=RT100200300400"></img> <imgalt="二维码"src="${pageContext.request.contextPath}/qrCode?keycode=RT100200300400500"></img>
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