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Simplify the operating components of excel with Alibaba's easyexcel
/*
* Copyright (C) 2022 [www.mobaijun.com]
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mobaijun.easyexcel.util;
import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.io.resource.ClassPathResource;
import cn.hutool.core.util.IdUtil;
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.support.ExcelTypeEnum;
import com.alibaba.excel.write.builder.ExcelWriterSheetBuilder;
import com.alibaba.excel.write.metadata.WriteSheet;
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 com.mobaijun.core.spring.SpringUtil;
import com.mobaijun.core.util.file.FileUtil;
import com.mobaijun.easyexcel.constant.ExcelConstant;
import com.mobaijun.easyexcel.convert.ExcelBigNumberConvert;
import com.mobaijun.easyexcel.core.CellMergeStrategy;
import com.mobaijun.easyexcel.core.DropDownOptions;
import com.mobaijun.easyexcel.handler.ExcelDownHandler;
import com.mobaijun.easyexcel.listener.DefaultExcelListener;
import com.mobaijun.easyexcel.listener.ExcelListener;
import com.mobaijun.easyexcel.properties.ExcelProperties;
import com.mobaijun.easyexcel.result.ExcelResult;
import jakarta.servlet.ServletOutputStream;
import jakarta.servlet.http.HttpServletResponse;
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;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import org.apache.commons.lang3.StringUtils;
/**
* Description: Excel相关处理工具类
* Author: [mobaijun]
* Date: [2024/8/20 18:20]
* IntelliJ IDEA Version: [IntelliJ IDEA 2023.1.4]
*/
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class ExcelUtil {
/**
* 同步导入(适用于小数据量)
*
* @param is 输入流
* @return 转换后集合
*/
public static List importExcel(InputStream is, Class clazz) {
return EasyExcel.read(is).head(clazz).autoCloseStream(false).sheet().doReadSync();
}
/**
* 使用校验监听器 异步导入 同步返回
*
* @param is 输入流
* @param clazz 对象类型
* @param isValidate 是否 Validator 检验 默认为是
* @return 转换后集合
*/
public static ExcelResult importExcel(InputStream is, Class clazz, boolean isValidate) {
DefaultExcelListener listener = new DefaultExcelListener<>(isValidate);
EasyExcel.read(is, clazz, listener).sheet().doRead();
return listener.getExcelResult();
}
/**
* 使用自定义监听器 异步导入 自定义返回
*
* @param is 输入流
* @param clazz 对象类型
* @param listener 自定义监听器
* @return 转换后集合
*/
public static ExcelResult importExcel(InputStream is, Class clazz, ExcelListener listener) {
EasyExcel.read(is, clazz, listener).sheet().doRead();
return listener.getExcelResult();
}
/**
* 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
*/
public static void exportExcel(List list, String sheetName, Class clazz, HttpServletResponse response) {
try {
resetResponse(sheetName, response);
ServletOutputStream os = response.getOutputStream();
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 void exportExcel(List list, String sheetName, Class clazz, HttpServletResponse response, List 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");
}
}
/**
* 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 void exportExcel(List list, String sheetName, Class clazz, boolean merge, HttpServletResponse response) {
try {
resetResponse(sheetName, response);
ServletOutputStream os = response.getOutputStream();
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 void exportExcel(List list, String sheetName, Class clazz, boolean merge, HttpServletResponse response, List 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");
}
}
/**
* 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
*/
public static void exportExcel(List list, String sheetName, Class clazz, OutputStream 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 void exportExcel(List list, String sheetName, Class clazz, OutputStream os, List options) {
exportExcel(list, sheetName, clazz, false, os, options);
}
/**
* 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 os 输出流
*/
public static void exportExcel(List list, String sheetName, Class clazz, boolean merge,
OutputStream os, List options) {
ExcelWriterSheetBuilder builder = EasyExcel.write(os, clazz)
.autoCloseStream(false)
// 自动适配
.registerWriteHandler(new LongestMatchColumnWidthStyleStrategy())
// 大数值自动转换 防止失真
.registerConverter(new ExcelBigNumberConvert())
.sheet(sheetName);
if (merge) {
// 合并处理器
builder.registerWriteHandler(new CellMergeStrategy(list, true));
}
if (options != null && !options.isEmpty()) {
// 添加下拉框操作
builder.registerWriteHandler(new ExcelDownHandler(options));
}
builder.doWrite(list);
}
/**
* 单表多数据模板导出 模板格式为 {.属性}
*
* @param filename 文件名
* @param templatePath 模板路径 resource 目录下的路径包括模板文件名
* 例如: excel/temp.xlsx
* 重点: 模板文件必须放置到启动类对应的 resource 目录下
* @param data 模板需要的数据
* @param response 响应体
*/
public static void exportTemplate(List