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@@ -3,6 +3,7 @@ package com.qmth.teachcloud.common.util;
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import com.qmth.teachcloud.common.contant.SystemConstant;
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import com.qmth.teachcloud.common.contant.SystemConstant;
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import com.qmth.teachcloud.common.enums.ExceptionResultEnum;
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import com.qmth.teachcloud.common.enums.ExceptionResultEnum;
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import org.apache.commons.io.IOUtils;
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import org.apache.commons.io.IOUtils;
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+import org.apache.commons.lang3.StringUtils;
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import org.apache.pdfbox.pdmodel.PDDocument;
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import org.apache.pdfbox.pdmodel.PDDocument;
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import org.apache.pdfbox.pdmodel.PDPageTree;
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import org.apache.pdfbox.pdmodel.PDPageTree;
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import org.apache.pdfbox.rendering.PDFRenderer;
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import org.apache.pdfbox.rendering.PDFRenderer;
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@@ -391,7 +392,7 @@ public class ConvertUtil {
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}
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}
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public String randomNumberPrefix(String examShortCode, String courseShortCode, String clazzShortCode, Integer examNumberDigit) {
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public String randomNumberPrefix(String examShortCode, String courseShortCode, String clazzShortCode, Integer examNumberDigit) {
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- if (examNumberDigit < 7) {
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+ if (examNumberDigit == null || examNumberDigit < 7) {
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return "";
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return "";
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} else if (examNumberDigit < 11) {
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} else if (examNumberDigit < 11) {
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return examShortCode;
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return examShortCode;
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