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update 优化 ExcelUtil 工具支持合并处理器

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疯狂的狮子li 2022-05-31 13:37:16 +08:00
parent f6fa17a3a8
commit 34396de03a
1 changed files with 24 additions and 3 deletions
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27
ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
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@ -2,8 +2,10 @@ package com.ruoyi.common.utils.poi;
import cn.hutool.core.util.IdUtil; import cn.hutool.core.util.IdUtil;
import com.alibaba.excel.EasyExcel; import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.write.builder.ExcelWriterSheetBuilder;
import com.alibaba.excel.write.style.column.LongestMatchColumnWidthStyleStrategy; import com.alibaba.excel.write.style.column.LongestMatchColumnWidthStyleStrategy;
import com.ruoyi.common.convert.ExcelBigNumberConvert; import com.ruoyi.common.convert.ExcelBigNumberConvert;
import com.ruoyi.common.excel.CellMergeStrategy;
import com.ruoyi.common.excel.DefaultExcelListener; import com.ruoyi.common.excel.DefaultExcelListener;
import com.ruoyi.common.excel.ExcelListener; import com.ruoyi.common.excel.ExcelListener;
import com.ruoyi.common.excel.ExcelResult; import com.ruoyi.common.excel.ExcelResult;
@ -69,22 +71,41 @@ public class ExcelUtil {
* *
* @param list 导出数据集合 * @param list 导出数据集合
* @param sheetName 工作表的名称 * @param sheetName 工作表的名称
* @return 结果 * @param clazz 实体类
* @param response 响应体
*/ */
public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, HttpServletResponse response) { public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, HttpServletResponse response) {
exportExcel(list, sheetName, clazz, false, response);
}
/**
* 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
*/
public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, boolean merge, HttpServletResponse response) {
try { try {
String filename = encodingFilename(sheetName); String filename = encodingFilename(sheetName);
response.reset(); response.reset();
FileUtils.setAttachmentResponseHeader(response, filename); FileUtils.setAttachmentResponseHeader(response, filename);
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=UTF-8"); response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=UTF-8");
ServletOutputStream os = response.getOutputStream(); ServletOutputStream os = response.getOutputStream();
EasyExcel.write(os, clazz) ExcelWriterSheetBuilder builder = EasyExcel.write(os, clazz)
.autoCloseStream(false) .autoCloseStream(false)
// 自动适配 // 自动适配
.registerWriteHandler(new LongestMatchColumnWidthStyleStrategy()) .registerWriteHandler(new LongestMatchColumnWidthStyleStrategy())
// 大数值自动转换 防止失真 // 大数值自动转换 防止失真
.registerConverter(new ExcelBigNumberConvert()) .registerConverter(new ExcelBigNumberConvert())
.sheet(sheetName).doWrite(list); .sheet(sheetName);
if (merge) {
// 合并处理器
builder.registerWriteHandler(new CellMergeStrategy(list, true));
}
builder.doWrite(list);
} catch (IOException e) { } catch (IOException e) {
throw new RuntimeException("导出Excel异常"); throw new RuntimeException("导出Excel异常");
} }