Merge remote-tracking branch 'origin/feature_教代会代表证' into release_20260831
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package com.budwk.app.zhgh.democratic.teachercongress.delegate.controller;
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import cn.dev33.satoken.annotation.SaCheckLogin;
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import cn.hutool.core.util.StrUtil;
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import com.budwk.app.base.constant.RoleConstant;
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import com.budwk.app.base.result.Result;
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import com.budwk.app.sys.models.Sys_config;
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import com.budwk.app.sys.services.SysFileService;
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import com.budwk.app.sys.services.SysRoleService;
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import com.budwk.app.web.commons.auth.utils.SecurityUtil;
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import com.budwk.app.zhgh.democratic.teachercongress.delegate.models.Teacher_congress_delegate;
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import com.budwk.app.zhgh.democratic.teachercongress.delegation.models.Teacher_congress_delegation;
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import com.budwk.app.zhgh.democratic.teachercongress.prepare.models.Teacher_congress_session;
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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.WriterException;
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import com.google.zxing.common.BitMatrix;
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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import org.nutz.dao.Cnd;
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import org.nutz.dao.Dao;
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import org.nutz.ioc.loader.annotation.Inject;
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import org.nutz.ioc.loader.annotation.IocBean;
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import org.nutz.json.Json;
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import org.nutz.lang.Lang;
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import org.nutz.lang.util.NutMap;
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import org.nutz.mvc.annotation.At;
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import org.nutz.mvc.annotation.Ok;
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import javax.imageio.ImageIO;
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import javax.servlet.http.HttpServletResponse;
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import java.awt.Color;
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import java.awt.Font;
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import java.awt.FontMetrics;
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import java.awt.Graphics2D;
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import java.awt.RenderingHints;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.net.URLDecoder;
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import java.nio.charset.StandardCharsets;
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import java.util.EnumMap;
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import java.util.List;
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import java.util.Map;
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/**
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* 教代会代表证
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*/
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@IocBean
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@At("/platform/teacherCongress/delegate/card")
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@Ok("json:full")
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public class TeacherCongressDelegateCardController {
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private static final String CARD_BACK_IMG_CONFIG = "TeacherCongressCardBackImg";
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private static final String APP_LOGO_CONFIG = "AppLogo";
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@Inject
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private Dao dao;
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@Inject
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private SysFileService sysFileService;
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@Inject
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private SysRoleService sysRoleService;
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@At("/h5")
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@Ok("void")
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@SaCheckLogin
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public void h5Index(HttpServletResponse response) throws IOException, WriterException {
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showCard(response);
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}
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@At
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@SaCheckLogin
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public Object isDb() {
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Teacher_congress_session session = getCurrentSession();
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if (session == null) {
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return Result.error("当前没有开启的教代会");
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}
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Teacher_congress_delegate delegate = getCurrentDelegate(session.getId());
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if (delegate == null) {
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return Result.error("抱歉，" + getSessionTitle(session) + "您不是代表");
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}
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return Result.success();
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}
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@At
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@Ok("void")
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@SaCheckLogin
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public void showCard(HttpServletResponse response) throws IOException, WriterException {
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NutMap cardInfo = getCardInfo();
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BufferedImage backgroundImage = readBackgroundImage();
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BufferedImage resultImage = new BufferedImage(backgroundImage.getWidth(), backgroundImage.getHeight(), BufferedImage.TYPE_INT_RGB);
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Graphics2D graphics = resultImage.createGraphics();
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graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
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graphics.drawImage(backgroundImage, 0, 0, null);
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BufferedImage logoImage = tintLogo(readConfigImage(APP_LOGO_CONFIG, "系统Logo读取失败"), Color.decode("#1476DF"));
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int logoMaxWidth = resultImage.getWidth() * 55 / 100;
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int logoMaxHeight = resultImage.getHeight() * 11 / 100;
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double logoScale = Math.min((double) logoMaxWidth / logoImage.getWidth(), (double) logoMaxHeight / logoImage.getHeight());
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int logoWidth = (int) (logoImage.getWidth() * logoScale);
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int logoHeight = (int) (logoImage.getHeight() * logoScale);
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int logoX = (resultImage.getWidth() - logoWidth) / 2;
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int logoY = resultImage.getHeight() * 15 / 100;
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graphics.drawImage(logoImage, logoX, logoY, logoWidth, logoHeight, null);
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String title = StrUtil.blankToDefault(cardInfo.getString("title"), "");
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int titleY = resultImage.getHeight() * 32 / 100;
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Font titleFont = fitFontToWidth(graphics, new Font("微软雅黑", Font.BOLD, 70), title,
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resultImage.getWidth() * 82 / 100, 36);
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commonSpacedFont(resultImage, graphics, title, titleY, titleFont, Color.decode("#1476DF"), 6);
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Map<EncodeHintType, Object> hintMap = new EnumMap<>(EncodeHintType.class);
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hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
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hintMap.put(EncodeHintType.MARGIN, 0);
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NutMap qrData = new NutMap();
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qrData.setv("userId", SecurityUtil.getUserId());
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int qrCodeSize = Math.min(330, resultImage.getWidth() * 31 / 100);
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BitMatrix bitMatrix = new MultiFormatWriter().encode(Json.toJson(qrData), BarcodeFormat.QR_CODE,
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qrCodeSize, qrCodeSize, hintMap);
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int qrCodeX = (resultImage.getWidth() - qrCodeSize) / 2;
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int qrCodeY = resultImage.getHeight() * 37 / 100;
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int qrPanelPadding = 8;
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graphics.setColor(Color.WHITE);
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graphics.fillRoundRect(qrCodeX - qrPanelPadding, qrCodeY - qrPanelPadding,
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qrCodeSize + qrPanelPadding * 2, qrCodeSize + qrPanelPadding * 2, 22, 22);
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for (int x = 0; x < qrCodeSize; x++) {
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for (int y = 0; y < qrCodeSize; y++) {
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if (bitMatrix.get(x, y)) {
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resultImage.setRGB(qrCodeX + x, qrCodeY + y, Color.BLACK.getRGB());
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}
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}
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}
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int dividerY = qrCodeY + qrCodeSize + 60;
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int dividerWidth = resultImage.getWidth() * 38 / 100;
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graphics.setColor(Color.decode("#1476DF"));
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graphics.fillRect((resultImage.getWidth() - dividerWidth) / 2, dividerY, dividerWidth, 2);
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graphics.fillRect(resultImage.getWidth() / 2 - 5, dividerY - 4, 10, 10);
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String nameText = StrUtil.blankToDefault(cardInfo.getString("nameText"), SecurityUtil.getUserUsername());
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int nameTextY = dividerY + 115;
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Font nameFont = fitFontToWidth(graphics, new Font("微软雅黑", Font.BOLD, 68), nameText,
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resultImage.getWidth() * 70 / 100, 34);
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commonSpacedFont(resultImage, graphics, nameText, nameTextY, nameFont, Color.decode("#1476DF"), 30);
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String dbtText = StrUtil.blankToDefault(cardInfo.getString("dbtText"), "");
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int dbtTextY = nameTextY + 82;
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Font dbtFont = fitFontToWidth(graphics, new Font("微软雅黑", Font.PLAIN, 36), dbtText,
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resultImage.getWidth() * 75 / 100, 22);
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commonSpacedFont(resultImage, graphics, dbtText, dbtTextY, dbtFont, Color.decode("#333333"), 8);
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response.setContentType("image/png");
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ImageIO.write(resultImage, "png", response.getOutputStream());
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graphics.dispose();
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}
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private NutMap getCardInfo() throws IOException {
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Teacher_congress_session session = getCurrentSession();
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if (session == null) {
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throw new IOException("当前没有开启的教代会");
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}
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Teacher_congress_delegate delegate = getCurrentDelegate(session.getId());
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if (delegate == null) {
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throw new IOException("抱歉，" + getSessionTitle(session) + "您不是代表");
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}
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Teacher_congress_delegation delegation = null;
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if (StrUtil.isNotBlank(delegate.getDelegationId())) {
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delegation = dao.fetch(Teacher_congress_delegation.class, delegate.getDelegationId());
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}
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NutMap nutMap = NutMap.NEW();
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nutMap.put("title", getSessionTitle(session));
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nutMap.put("nameText", StrUtil.blankToDefault(delegate.getUserName(), SecurityUtil.getUserUsername()));
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nutMap.put("dbtText", delegation == null ? "" : StrUtil.blankToDefault(delegation.getName(), ""));
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return nutMap;
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}
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private Teacher_congress_session getCurrentSession() {
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List<Teacher_congress_session> sessions = dao.query(Teacher_congress_session.class, Cnd.where("enable", "=", true)
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.desc("startDate"));
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if (Lang.isEmpty(sessions)) {
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return null;
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}
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return sessions.get(0);
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}
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private Teacher_congress_delegate getCurrentDelegate(String sessionId) {
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List<String> roleIds = sysRoleService.getRoleIdsByCode(List.of(
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RoleConstant.TEACHER_CONGRESS_DELEGATE_FORMAL,
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RoleConstant.TEACHER_CONGRESS_DELEGATE_ATTENDANCE,
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RoleConstant.TEACHER_CONGRESS_DELEGATE_SPECIALLY_INVITE
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));
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return dao.fetch(Teacher_congress_delegate.class, Cnd.where("sessionId", "=", sessionId)
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.and("userId", "=", SecurityUtil.getUserId())
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.and("roleId", "in", roleIds));
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}
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private String getSessionTitle(Teacher_congress_session session) {
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String fullName = StrUtil.blankToDefault(session.getFullName(), "");
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if (fullName.contains("教代会")) {
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return fullName;
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}
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return fullName + "教代会";
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}
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private BufferedImage readBackgroundImage() throws IOException {
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String fileId = getCardBackImgFileId();
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if (StrUtil.isBlank(fileId)) {
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throw new IOException("请先配置教代会代表证背景图片");
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}
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byte[] bytes = sysFileService.download(fileId);
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BufferedImage image = ImageIO.read(new ByteArrayInputStream(bytes));
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if (image == null) {
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throw new IOException("教代会代表证背景图片读取失败");
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}
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return image;
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}
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private BufferedImage readConfigImage(String configKey, String errorMessage) throws IOException {
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String fileId = getFileIdFromConfigValue(getConfigValue(configKey));
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if (StrUtil.isBlank(fileId)) {
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throw new IOException("请先配置" + configKey);
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}
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BufferedImage image = ImageIO.read(new ByteArrayInputStream(sysFileService.download(fileId)));
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if (image == null) {
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throw new IOException(errorMessage);
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}
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return image;
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}
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private BufferedImage tintLogo(BufferedImage source, Color color) {
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BufferedImage tinted = new BufferedImage(source.getWidth(), source.getHeight(), BufferedImage.TYPE_INT_ARGB);
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for (int x = 0; x < source.getWidth(); x++) {
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for (int y = 0; y < source.getHeight(); y++) {
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Color sourceColor = new Color(source.getRGB(x, y), true);
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int luminance = (sourceColor.getRed() * 299 + sourceColor.getGreen() * 587
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+ sourceColor.getBlue() * 114) / 1000;
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int maskAlpha = Math.max(0, Math.min(255, (250 - luminance) * 25));
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int alpha = sourceColor.getAlpha() * maskAlpha / 255;
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if (alpha > 0) {
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tinted.setRGB(x, y, new Color(color.getRed(), color.getGreen(), color.getBlue(), alpha).getRGB());
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}
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}
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}
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return tinted;
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}
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private String getCardBackImgFileId() {
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String configValue = getConfigValue(CARD_BACK_IMG_CONFIG);
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if (StrUtil.isBlank(configValue)) {
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configValue = getConfigValue("cardBackImg");
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}
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if (StrUtil.isBlank(configValue)) {
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return "";
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}
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return getFileIdFromConfigValue(configValue);
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}
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private String getFileIdFromConfigValue(String configValue) {
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String firstValue = StrUtil.subBefore(StrUtil.blankToDefault(configValue, ""), ",", false);
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if (firstValue.contains("id=")) {
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firstValue = StrUtil.subAfter(firstValue, "id=", true);
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firstValue = StrUtil.subBefore(firstValue, "&", false);
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}
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return URLDecoder.decode(firstValue, StandardCharsets.UTF_8);
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}
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private String getConfigValue(String configKey) {
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Sys_config config = dao.fetch(Sys_config.class, configKey);
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return config == null ? "" : StrUtil.blankToDefault(config.getConfigValue(), "");
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}
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private void commonFont(BufferedImage resultImage, Graphics2D graphics, String text, int textY, Font font, Color color) {
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graphics.setFont(font);
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graphics.setColor(color);
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FontMetrics fontMetrics = graphics.getFontMetrics();
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int textWidth = fontMetrics.stringWidth(text);
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int textX = (resultImage.getWidth() - textWidth) / 2;
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graphics.drawString(text, textX, textY);
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}
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private void commonSpacedFont(BufferedImage resultImage, Graphics2D graphics, String text, int textY,
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Font font, Color color, int letterSpacing) {
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graphics.setFont(font);
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graphics.setColor(color);
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FontMetrics fontMetrics = graphics.getFontMetrics();
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int textWidth = 0;
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for (int i = 0; i < text.length(); i++) {
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textWidth += fontMetrics.charWidth(text.charAt(i));
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}
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textWidth += Math.max(0, text.length() - 1) * letterSpacing;
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int textX = (resultImage.getWidth() - textWidth) / 2;
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for (int i = 0; i < text.length(); i++) {
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char character = text.charAt(i);
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graphics.drawString(String.valueOf(character), textX, textY);
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textX += fontMetrics.charWidth(character) + letterSpacing;
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}
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}
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private Font fitFontToWidth(Graphics2D graphics, Font font, String text, int maxWidth, int minSize) {
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Font result = font;
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while (result.getSize() > minSize) {
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graphics.setFont(result);
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if (graphics.getFontMetrics().stringWidth(text) <= maxWidth) {
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break;
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}
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result = result.deriveFont((float) (result.getSize() - 2));
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}
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return result;
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}
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}
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Reference in New Issue
Block a user