From 4be2ba94827668f07282cdab2eb7d84e2f6d7b1e Mon Sep 17 00:00:00 2001
From: 潘志宝 <979469083@qq.com>
Date: 星期三, 18 六月 2025 08:39:55 +0800
Subject: [PATCH] 动态列excel
---
iailab-framework/iailab-common-excel/src/main/java/com/iailab/framework/excel/core/util/ExcelUtils.java | 29 +++++++++++++++++++++++++++--
1 files changed, 27 insertions(+), 2 deletions(-)
diff --git a/iailab-framework/iailab-common-excel/src/main/java/com/iailab/framework/excel/core/util/ExcelUtils.java b/iailab-framework/iailab-common-excel/src/main/java/com/iailab/framework/excel/core/util/ExcelUtils.java
index f16434e..161b2f8 100644
--- a/iailab-framework/iailab-common-excel/src/main/java/com/iailab/framework/excel/core/util/ExcelUtils.java
+++ b/iailab-framework/iailab-common-excel/src/main/java/com/iailab/framework/excel/core/util/ExcelUtils.java
@@ -1,5 +1,7 @@
package com.iailab.framework.excel.core.util;
+import com.alibaba.excel.EasyExcelFactory;
+import com.alibaba.excel.write.handler.AbstractRowWriteHandler;
import com.iailab.framework.excel.core.handler.SelectSheetWriteHandler;
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.converters.longconverter.LongStringConverter;
@@ -10,6 +12,7 @@
import java.io.IOException;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
import java.util.List;
/**
@@ -36,7 +39,7 @@
EasyExcel.write(response.getOutputStream(), head)
.autoCloseStream(false) // 不要自动关闭，交给 Servlet 自己处理
.registerWriteHandler(new LongestMatchColumnWidthStyleStrategy()) // 基于 column 长度，自动适配。最大 255 宽度
- .registerWriteHandler(new SelectSheetWriteHandler(head,false)) // 基于固定 sheet 实现下拉框
+ .registerWriteHandler(new SelectSheetWriteHandler(head, false)) // 基于固定 sheet 实现下拉框
.registerConverter(new LongStringConverter()) // 避免 Long 类型丢失精度
.sheet(sheetName).doWrite(data);
// 设置 header 和 contentType。写在最后的原因是，避免报错时，响应 contentType 已经被修改了
@@ -56,11 +59,33 @@
EasyExcel.write(response.getOutputStream(), head)
.autoCloseStream(false) // 不要自动关闭，交给 Servlet 自己处理
.registerWriteHandler(new LongestMatchColumnWidthStyleStrategy()) // 基于 column 长度，自动适配。最大 255 宽度
- .registerWriteHandler(new SelectSheetWriteHandler(head,selectFlag)) // 基于固定 sheet 实现下拉框
+ .registerWriteHandler(new SelectSheetWriteHandler(head, selectFlag)) // 基于固定 sheet 实现下拉框
.registerConverter(new LongStringConverter()) // 避免 Long 类型丢失精度
.sheet(sheetName).doWrite(data);
// 设置 header 和 contentType。写在最后的原因是，避免报错时，响应 contentType 已经被修改了
response.addHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(filename, StandardCharsets.UTF_8.name()));
response.setContentType("application/vnd.ms-excel;charset=UTF-8");
}
+
+ public static void write(HttpServletResponse response, String filename, String sheetName,
+ List<String> column, List<List<Object>> data) throws IOException {
+
+ List<List<String>> head = new ArrayList<>();
+ if (column != null && column.size() > 0) {
+ for (String columnName : column) {
+ List<String> item = new ArrayList<>();
+ item.add(columnName);
+ head.add(item);
+ }
+ }
+
+ EasyExcelFactory.write(response.getOutputStream())
+ .head(head)
+ // handle
+ .registerWriteHandler(new LongestMatchColumnWidthStyleStrategy())
+ .sheet(sheetName).doWrite(data);
+ // 设置 header 和 contentType。写在最后的原因是，避免报错时，响应 contentType 已经被修改了
+ response.addHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(filename, StandardCharsets.UTF_8.name()));
+ response.setContentType("application/vnd.ms-excel;charset=UTF-8");
+ }
}
--
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