excel util

pom.xml

@@ -54,6 +54,11 @@
             <artifactId>lombok</artifactId>
             <version>1.18.16</version>
         </dependency>
+        <dependency>
+            <groupId>cn.afterturn</groupId>
+            <artifactId>easypoi-base</artifactId>
+            <version>4.2.0</version>
+        </dependency>
 
         <dependency>
             <groupId>org.springframework.boot</groupId>

src/main/java/cn/com/qmth/examcloud/tool/task/Task.java

@@ -1,7 +1,13 @@
 package cn.com.qmth.examcloud.tool.task;
 
+import java.io.File;
+
 public interface Task {
 
     void start(String params);
 
+    default String tempDir() {
+        return System.getProperty("user.dir") + File.separator + "tempDir";
+    }
+
 }

src/main/java/cn/com/qmth/examcloud/tool/utils/ExcelUtils.java

@@ -0,0 +1,128 @@
+package cn.com.qmth.examcloud.tool.utils;
+
+import cn.afterturn.easypoi.excel.ExcelExportUtil;
+import cn.afterturn.easypoi.excel.entity.ExportParams;
+import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
+import cn.afterturn.easypoi.excel.export.styler.AbstractExcelExportStyler;
+import cn.afterturn.easypoi.excel.export.styler.IExcelExportStyler;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.poi.ss.usermodel.*;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.util.List;
+
+/**
+ * Excel工具类
+ */
+public class ExcelUtils {
+
+    private static Logger log = LoggerFactory.getLogger(ExcelUtils.class);
+
+    public static <T> void exportExcel(Class<T> clazz, List<T> records, File excelFile) {
+        exportExcel(clazz, records, excelFile, null);
+    }
+
+    public static <T> void exportExcel(Class<T> clazz, List<T> records, File excelFile, String title) {
+        if (excelFile == null) {
+            log.warn("[ExportExcel] excelFile is null");
+            return;
+        }
+
+        if (records == null) {
+            log.warn("[ExportExcel] records is null");
+            return;
+        }
+
+        FileUtils.makeDirs(excelFile.getParent());
+        log.info(String.format("[ExportExcel] records size is %s, %s", records.size(), excelFile.getAbsolutePath()));
+
+        ExportParams params = new ExportParams();
+        params.setStyle(ExcelStyle.class);
+        params.setType(ExcelType.XSSF);
+
+        if (StringUtils.isNotBlank(title)) {
+            params.setTitle(title);
+            params.setSheetName(title);
+        }
+
+        try (FileOutputStream fos = new FileOutputStream(excelFile);
+             Workbook workbook = ExcelExportUtil.exportExcel(params, clazz, records);) {
+
+            workbook.write(fos);
+        } catch (Exception e) {
+            log.error(e.getMessage(), e);
+        }
+    }
+
+    /**
+     * Excel导出默认样式
+     */
+    public static class ExcelStyle extends AbstractExcelExportStyler implements IExcelExportStyler {
+
+        private final short fontHeightInPoints = 16;
+
+        public ExcelStyle(Workbook workbook) {
+            super.createStyles(workbook);
+        }
+
+        public CellStyle getHeaderStyle(short headerColor) {
+            CellStyle headerStyle = this.workbook.createCellStyle();
+            Font font = this.workbook.createFont();
+            font.setBold(true);
+            font.setFontHeightInPoints(fontHeightInPoints);
+            headerStyle.setFont(font);
+            // headerStyle.setFillForegroundColor(headerColor);
+            // headerStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
+            headerStyle.setBorderLeft(BorderStyle.THIN);
+            headerStyle.setBorderRight(BorderStyle.THIN);
+            headerStyle.setBorderBottom(BorderStyle.THIN);
+            headerStyle.setBorderTop(BorderStyle.THIN);
+            headerStyle.setAlignment(HorizontalAlignment.CENTER);
+            headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
+            return headerStyle;
+        }
+
+        public CellStyle stringNoneStyle(Workbook workbook, boolean isWarp) {
+            CellStyle cellStyle = workbook.createCellStyle();
+            cellStyle.setBorderLeft(BorderStyle.THIN);
+            cellStyle.setBorderRight(BorderStyle.THIN);
+            cellStyle.setBorderBottom(BorderStyle.THIN);
+            cellStyle.setBorderTop(BorderStyle.THIN);
+            cellStyle.setAlignment(HorizontalAlignment.CENTER);
+            cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);
+            cellStyle.setDataFormat(STRING_FORMAT);
+            if (isWarp) {
+                cellStyle.setWrapText(true);
+            }
+            return cellStyle;
+        }
+
+        public CellStyle getTitleStyle(short color) {
+            CellStyle titleStyle = this.workbook.createCellStyle();
+            Font font = this.workbook.createFont();
+            font.setBold(true);
+            font.setColor(IndexedColors.BLACK.getIndex());
+            titleStyle.setFont(font);
+            // titleStyle.setFillForegroundColor(IndexedColors.LIGHT_GREEN.getIndex());
+            titleStyle.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
+            titleStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
+            titleStyle.setBorderLeft(BorderStyle.THIN);
+            titleStyle.setBorderRight(BorderStyle.THIN);
+            titleStyle.setBorderBottom(BorderStyle.THIN);
+            titleStyle.setBorderTop(BorderStyle.THIN);
+            titleStyle.setAlignment(HorizontalAlignment.CENTER);
+            titleStyle.setVerticalAlignment(VerticalAlignment.CENTER);
+            titleStyle.setWrapText(true);
+            return titleStyle;
+        }
+
+        public CellStyle stringSeptailStyle(Workbook workbook, boolean isWarp) {
+            return isWarp ? this.stringNoneWrapStyle : this.stringNoneStyle;
+        }
+
+    }
+
+}

src/main/resources/application.properties

@@ -13,9 +13,10 @@ spring.datasource.url=jdbc:mysql://${dsurl.host}:${dsurl.port}/${dsurl.database}
 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
 spring.jpa.hibernate.ddl-auto=validate
 # logging config
-logging.level.org.springframework=warn
-logging.level.org.apache=warn
-logging.level.cn.com.qmth=debug
+logging.level.org.springframework=WARN
+logging.level.org.hibernate=WARN
+logging.level.org.apache=WARN
+logging.level.cn.com.qmth=INFO
 # task config
 examcloud.task.active=true
 examcloud.task.impl=cn.com.qmth.examcloud.tool.task.demo.DemoTask