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【V3.2.0】1、左侧菜单Logo和标题固定；2、Excel导出添加水印；3、长时间不在线自动返回登录页；4、移除sa-token的 t…
…oken-prefix 配置；5、升级 ant deign vue到最新版4.2；6、登录页面引入登录类型图标方式；7、文件预览组件的文件下载方式为接口方式下载；
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smart-admin-api/sa-base/src/main/java/net/lab1024/sa/base/common/util/SmartExcelUtil.java
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| package net.lab1024.sa.base.common.util; | ||
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| import com.alibaba.excel.EasyExcel; | ||
| import com.alibaba.excel.write.handler.SheetWriteHandler; | ||
| import com.alibaba.excel.write.metadata.holder.WriteSheetHolder; | ||
| import com.alibaba.excel.write.metadata.holder.WriteWorkbookHolder; | ||
| import lombok.Data; | ||
| import lombok.extern.slf4j.Slf4j; | ||
| import org.apache.poi.openxml4j.opc.PackagePartName; | ||
| import org.apache.poi.openxml4j.opc.PackageRelationship; | ||
| import org.apache.poi.openxml4j.opc.TargetMode; | ||
| import org.apache.poi.xssf.usermodel.XSSFPictureData; | ||
| import org.apache.poi.xssf.usermodel.XSSFRelation; | ||
| import org.apache.poi.xssf.usermodel.XSSFSheet; | ||
| import org.apache.poi.xssf.usermodel.XSSFWorkbook; | ||
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| import javax.imageio.ImageIO; | ||
| import javax.servlet.http.HttpServletResponse; | ||
| import javax.swing.*; | ||
| import java.awt.*; | ||
| import java.awt.geom.AffineTransform; | ||
| import java.awt.image.BufferedImage; | ||
| import java.io.ByteArrayOutputStream; | ||
| import java.io.IOException; | ||
| import java.util.Collection; | ||
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| /** | ||
| * | ||
| * excel 工具类 | ||
| * | ||
| * @Author 1024创新实验室-主任:卓大 | ||
| * @Date 2024/4/22 22:49:07 | ||
| * @Wechat zhuoda1024 | ||
| * @Email [email protected] | ||
| * @Copyright 1024创新实验室 （ https://1024lab.net ），2012-2024 | ||
| */ | ||
| public final class SmartExcelUtil { | ||
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| /** | ||
| * 通用单sheet导出 | ||
| */ | ||
| public static void exportExcel(HttpServletResponse response, String fileName, String sheetName, Class head,Collection<?> data) throws IOException { | ||
| // 设置下载消息头 | ||
| SmartResponseUtil.setDownloadFileHeader(response, fileName, null); | ||
| // 下载 | ||
| EasyExcel.write(response.getOutputStream(), head) | ||
| .autoCloseStream(Boolean.FALSE) | ||
| .sheet(sheetName) | ||
| .doWrite(data); | ||
| } | ||
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| /** | ||
| * 通用单 sheet水印 导出 | ||
| */ | ||
| public static void exportExcelWithWatermark(HttpServletResponse response, String fileName, String sheetName, Class head,Collection<?> data, String watermarkString) throws IOException { | ||
| // 设置下载消息头 | ||
| SmartResponseUtil.setDownloadFileHeader(response, fileName, null); | ||
| // 水印 | ||
| Watermark watermark = new Watermark(watermarkString); | ||
| // 一定要inMemory | ||
| EasyExcel.write(response.getOutputStream(), head) | ||
| .inMemory(true) | ||
| .sheet(sheetName) | ||
| .registerWriteHandler(new CustomWaterMarkHandler(watermark)) | ||
| .doWrite(data); | ||
| } | ||
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| @Slf4j | ||
| private static class CustomWaterMarkHandler implements SheetWriteHandler { | ||
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| private final Watermark watermark; | ||
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| public CustomWaterMarkHandler(Watermark watermark) { | ||
| this.watermark = watermark; | ||
| } | ||
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| @Override | ||
| public void afterSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) { | ||
| BufferedImage bufferedImage = createWatermarkImage(); | ||
| XSSFWorkbook workbook = (XSSFWorkbook) writeSheetHolder.getParentWriteWorkbookHolder().getWorkbook(); | ||
| try { | ||
| // 添加水印的具体操作 | ||
| addWatermarkToSheet(workbook, bufferedImage); | ||
| } catch (Exception e) { | ||
| log.error("添加水印出错:", e); | ||
| } | ||
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| } | ||
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| /** | ||
| * 创建水印图片 | ||
| * | ||
| * @return | ||
| */ | ||
| private BufferedImage createWatermarkImage() { | ||
| // 获取水印相关参数 | ||
| Font font = watermark.getFont(); | ||
| int width = watermark.getWidth(); | ||
| int height = watermark.getHeight(); | ||
| Color color = watermark.getColor(); | ||
| String text = watermark.getContent(); | ||
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| // 创建带有透明背景的 BufferedImage | ||
| BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); | ||
| Graphics2D g = image.createGraphics(); | ||
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| // 设置画笔字体、平滑、颜色 | ||
| g.setFont(font); | ||
| g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); | ||
| g.setColor(color); | ||
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| // 计算水印位置和角度 | ||
| int y = watermark.getYAxis(); | ||
| int x = watermark.getXAxis(); | ||
| AffineTransform transform = AffineTransform.getRotateInstance(Math.toRadians(-watermark.getAngle()), 0, y); | ||
| g.setTransform(transform); | ||
| // 绘制水印文字 | ||
| g.drawString(text, x, y); | ||
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| // 释放资源 | ||
| g.dispose(); | ||
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| return image; | ||
| } | ||
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| private void addWatermarkToSheet(XSSFWorkbook workbook, BufferedImage watermarkImage) { | ||
| try (ByteArrayOutputStream os = new ByteArrayOutputStream()) { | ||
| ImageIO.write(watermarkImage, "png", os); | ||
| int pictureIdx = workbook.addPicture(os.toByteArray(), XSSFWorkbook.PICTURE_TYPE_PNG); | ||
| XSSFPictureData pictureData = workbook.getAllPictures().get(pictureIdx); | ||
| for (int i = 0; i < workbook.getNumberOfSheets(); i++) { | ||
| // 获取每个Sheet表 | ||
| XSSFSheet sheet = workbook.getSheetAt(i); | ||
| PackagePartName ppn = pictureData.getPackagePart().getPartName(); | ||
| String relType = XSSFRelation.IMAGES.getRelation(); | ||
| PackageRelationship pr = sheet.getPackagePart().addRelationship(ppn, TargetMode.INTERNAL, relType, null); | ||
| sheet.getCTWorksheet().addNewPicture().setId(pr.getId()); | ||
| } | ||
| } catch (Exception e) { | ||
| // 处理ImageIO.write可能抛出的异常 | ||
| log.error("添加水印图片时发生错误", e); | ||
| } | ||
| } | ||
| } | ||
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| @Data | ||
| private static class Watermark { | ||
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| public Watermark(String content) { | ||
| this.content = content; | ||
| init(); | ||
| } | ||
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| public Watermark(String content, Color color, Font font, double angle) { | ||
| this.content = content; | ||
| this.color = color; | ||
| this.font = font; | ||
| this.angle = angle; | ||
| init(); | ||
| } | ||
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| /** | ||
| * 根据水印内容长度自适应水印图片大小，简单的三角函数 | ||
| */ | ||
| private void init() { | ||
| FontMetrics fontMetrics = new JLabel().getFontMetrics(this.font); | ||
| int stringWidth = fontMetrics.stringWidth(this.content); | ||
| int charWidth = fontMetrics.charWidth('A'); | ||
| this.width = (int) Math.abs(stringWidth * Math.cos(Math.toRadians(this.angle))) + 5 * charWidth; | ||
| this.height = (int) Math.abs(stringWidth * Math.sin(Math.toRadians(this.angle))) + 5 * charWidth; | ||
| this.yAxis = this.height; | ||
| this.xAxis = charWidth; | ||
| } | ||
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| /** | ||
| * 水印内容 | ||
| */ | ||
| private String content; | ||
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| /** | ||
| * 画笔颜色 | ||
| */ | ||
| private Color color = new Color(239,239,239); | ||
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| /** | ||
| * 字体样式 | ||
| */ | ||
| private Font font = new Font("Microsoft YaHei", Font.BOLD, 26); | ||
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| /** | ||
| * 水印宽度 | ||
| */ | ||
| private int width; | ||
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| /** | ||
| * 水印高度 | ||
| */ | ||
| private int height; | ||
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| /** | ||
| * 倾斜角度，非弧度制 | ||
| */ | ||
| private double angle = 25; | ||
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| /** | ||
| * 字体的y轴位置 | ||
| */ | ||
| private int yAxis = 50; | ||
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| /** | ||
| * 字体的X轴位置 | ||
| */ | ||
| private int xAxis; | ||
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| /** | ||
| * 水平倾斜度 | ||
| */ | ||
| private double shearX = 0.1; | ||
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| /** | ||
| * 垂直倾斜度 | ||
| */ | ||
| private double shearY = -0.26; | ||
| } | ||
| } |
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