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@ -1,8 +1,19 @@ |
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package org.jeecg.modules.demo.fabric.controller; |
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import java.io.ByteArrayOutputStream; |
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import java.io.IOException; |
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import java.util.*; |
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import javax.servlet.http.HttpServletRequest; |
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import javax.servlet.http.HttpServletResponse; |
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import com.google.zxing.WriterException; |
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import com.google.zxing.client.j2se.MatrixToImageWriter; |
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import com.google.zxing.BarcodeFormat; |
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import com.google.zxing.EncodeHintType; |
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import com.google.zxing.MultiFormatWriter; |
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import com.google.zxing.common.BitMatrix; |
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import com.google.zxing.qrcode.QRCodeWriter; |
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; |
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import org.jeecg.common.api.vo.Result; |
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import org.jeecg.common.system.query.QueryGenerator; |
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import org.jeecg.modules.demo.fabric.entity.ZyFabric; |
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@ -63,11 +74,43 @@ public class ZyFabricController extends JeecgController<ZyFabric, IZyFabricServi |
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public Result<?> queryPageList(ZyFabric zyFabric, |
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@RequestParam(name="pageNo", defaultValue="1") Integer pageNo, |
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@RequestParam(name="pageSize", defaultValue="10") Integer pageSize, |
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HttpServletRequest req) { |
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HttpServletRequest req) throws IOException, WriterException { |
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QueryWrapper<ZyFabric> queryWrapper = QueryGenerator.initQueryWrapper(zyFabric, req.getParameterMap()); |
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// QueryWrapper queryWrapper = new QueryWrapper();
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Page<ZyFabric> page = new Page<>(pageNo, pageSize); |
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IPage<ZyFabric> pageList = zyFabricService.page(page, queryWrapper); |
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MultiFormatWriter multiFormatWriter = new MultiFormatWriter(); |
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@SuppressWarnings("rawtypes") |
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Map hints = new HashMap(); |
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//设置UTF-8， 防止中文乱码
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hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); |
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//设置二维码四周白色区域的大小
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hints.put(EncodeHintType.MARGIN, 1); |
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//设置二维码的容错性
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hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); |
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//width:图片完整的宽;height:图片完整的高
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//因为要在二维码下方附上文字，所以把图片设置为长方形（高大于宽）
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int width = 150; |
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int height = 150; |
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//画二维码，记得调用multiFormatWriter.encode()时最后要带上hints参数，不然上面设置无效
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QRCodeWriter qrCodeWriter = new QRCodeWriter(); |
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List<Object> img= new ArrayList<>(); |
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String content=""; |
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//批量生成二维码
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for (int i=0;i<pageList.getRecords().size();i++){ |
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); |
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String fabricNumber = pageList.getRecords().get(i).getFabricNumber(); |
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String name = pageList.getRecords().get(i).getName(); |
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content = "面料名称："+name+",面料编号："+fabricNumber; |
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BitMatrix bitMatrix = qrCodeWriter.encode(content, BarcodeFormat.QR_CODE, width, height, hints); |
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MatrixToImageWriter.writeToStream(bitMatrix, "PNG", outputStream); |
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Base64.Encoder encoder = Base64.getEncoder(); |
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String text = encoder.encodeToString(outputStream.toByteArray()); |
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pageList.getRecords().get(i).setQRcode("data:image/png;base64,"+text); |
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} |
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return Result.OK(pageList); |
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} |
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