add 增加 excel 导出下拉框功能

疯狂的狮子Li

2023-06-25 4a9aafe8530e945bd52d8093944c4bcb1a89c28f

 ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/utils/ExcelUtil.java

@@ -10,21 +10,19 @@
import com.alibaba.excel.write.metadata.fill.FillConfig;
import com.alibaba.excel.write.metadata.fill.FillWrapper;
import com.alibaba.excel.write.style.column.LongestMatchColumnWidthStyleStrategy;
import org.dromara.common.core.utils.StringUtils;
import org.dromara.common.core.utils.file.FileUtils;
import org.dromara.common.excel.convert.ExcelBigNumberConvert;
import org.dromara.common.excel.core.CellMergeStrategy;
import org.dromara.common.excel.core.DefaultExcelListener;
import org.dromara.common.excel.core.ExcelListener;
import org.dromara.common.excel.core.ExcelResult;
import jakarta.servlet.ServletOutputStream;
import jakarta.servlet.http.HttpServletResponse;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import org.dromara.common.core.utils.StringUtils;
import org.dromara.common.core.utils.file.FileUtils;
import org.dromara.common.excel.convert.ExcelBigNumberConvert;
import org.dromara.common.excel.core.*;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.Collection;
import java.util.List;
import java.util.Map;
@@ -87,7 +85,26 @@
        try {
            resetResponse(sheetName, response);
            ServletOutputStream os = response.getOutputStream();
            exportExcel(list, sheetName, clazz, false, os);
            exportExcel(list, sheetName, clazz, false, os, null);
        } catch (IOException e) {
            throw new RuntimeException("导出Excel异常");
        }
    }

    /**
     * 导出excel
     *
     * @param list      导出数据集合
     * @param sheetName 工作表的名称
     * @param clazz     实体类
     * @param response  响应体
     * @param options   级联下拉选
     */
    public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, HttpServletResponse response, List<DropDownOptions> options) {
        try {
            resetResponse(sheetName, response);
            ServletOutputStream os = response.getOutputStream();
            exportExcel(list, sheetName, clazz, false, os, options);
        } catch (IOException e) {
            throw new RuntimeException("导出Excel异常");
        }
@@ -106,7 +123,27 @@
        try {
            resetResponse(sheetName, response);
            ServletOutputStream os = response.getOutputStream();
            exportExcel(list, sheetName, clazz, merge, os);
            exportExcel(list, sheetName, clazz, merge, os, null);
        } catch (IOException e) {
            throw new RuntimeException("导出Excel异常");
        }
    }

    /**
     * 导出excel
     *
     * @param list      导出数据集合
     * @param sheetName 工作表的名称
     * @param clazz     实体类
     * @param merge     是否合并单元格
     * @param response  响应体
     * @param options   级联下拉选
     */
    public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, boolean merge, HttpServletResponse response, List<DropDownOptions> options) {
        try {
            resetResponse(sheetName, response);
            ServletOutputStream os = response.getOutputStream();
            exportExcel(list, sheetName, clazz, merge, os, options);
        } catch (IOException e) {
            throw new RuntimeException("导出Excel异常");
        }
@@ -121,7 +158,20 @@
     * @param os        输出流
     */
    public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, OutputStream os) {
        exportExcel(list, sheetName, clazz, false, os);
        exportExcel(list, sheetName, clazz, false, os, null);
    }

    /**
     * 导出excel
     *
     * @param list      导出数据集合
     * @param sheetName 工作表的名称
     * @param clazz     实体类
     * @param os        输出流
     * @param options   级联下拉选内容
     */
    public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, OutputStream os, List<DropDownOptions> options) {
        exportExcel(list, sheetName, clazz, false, os, options);
    }

    /**
@@ -133,7 +183,8 @@
     * @param merge     是否合并单元格
     * @param os        输出流
     */
    public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, boolean merge, OutputStream os) {
    public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, boolean merge,
                                       OutputStream os, List<DropDownOptions> options) {
        ExcelWriterSheetBuilder builder = EasyExcel.write(os, clazz)
            .autoCloseStream(false)
            // 自动适配
@@ -144,6 +195,10 @@
        if (merge) {
            // 合并处理器
            builder.registerWriteHandler(new CellMergeStrategy(list, true));
        }
        if (CollUtil.isNotEmpty(options)) {
            // 添加下拉框操作
            builder.registerWriteHandler(new ExcelDownHandler(options));
        }
        builder.doWrite(list);
    }
@@ -253,7 +308,7 @@
    /**
     * 重置响应体
     */
    private static void resetResponse(String sheetName, HttpServletResponse response) {
    private static void resetResponse(String sheetName, HttpServletResponse response) throws UnsupportedEncodingException {
        String filename = encodingFilename(sheetName);
        FileUtils.setAttachmentResponseHeader(response, filename);
        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=UTF-8");
@@ -275,7 +330,7 @@
            if (StringUtils.containsAny(propertyValue, separator)) {
                for (String value : propertyValue.split(separator)) {
                    if (itemArray[0].equals(value)) {
                        propertyString.append(itemArray[1]).append(separator);
                        propertyString.append(itemArray[1] + separator);
                        break;
                    }
                }
@@ -304,7 +359,7 @@
            if (StringUtils.containsAny(propertyValue, separator)) {
                for (String value : propertyValue.split(separator)) {
                    if (itemArray[1].equals(value)) {
                        propertyString.append(itemArray[0]).append(separator);
                        propertyString.append(itemArray[0] + separator);
                        break;
                    }
                }