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+package com.crunii.common.excel.utils;
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+
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+import cn.hutool.core.collection.CollUtil;
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+import cn.hutool.core.collection.CollectionUtil;
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+import cn.hutool.core.io.resource.ClassPathResource;
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+import cn.hutool.core.util.IdUtil;
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+import com.crunii.common.excel.core.DefaultExcelListener;
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+import com.crunii.common.excel.dto.NoModelMultipleSheetsWriteData;
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+import com.crunii.common.excel.dto.NoModelSheetData;
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+import com.crunii.common.excel.dto.NoModelWriteData;
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+import com.crunii.common.excel.core.CellMergeStrategy;
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+import com.crunii.common.excel.core.ExcelListener;
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+import com.alibaba.excel.EasyExcel;
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+import com.alibaba.excel.ExcelWriter;
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+import com.alibaba.excel.write.builder.ExcelWriterSheetBuilder;
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+import com.alibaba.excel.write.metadata.WriteSheet;
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+import com.alibaba.excel.write.metadata.fill.FillConfig;
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+import com.alibaba.excel.write.metadata.fill.FillWrapper;
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+import com.alibaba.excel.write.style.column.LongestMatchColumnWidthStyleStrategy;
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+import com.crunii.common.excel.convert.ExcelBigNumberConvert;
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+import com.crunii.common.excel.core.ExcelResult;
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+import lombok.AccessLevel;
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+import lombok.NoArgsConstructor;
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+import org.apache.commons.lang3.StringUtils;
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+
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+import javax.servlet.ServletOutputStream;
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+import javax.servlet.http.HttpServletResponse;
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+import java.io.IOException;
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+import java.io.InputStream;
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+import java.io.UnsupportedEncodingException;
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+import java.net.URLEncoder;
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+import java.util.*;
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+
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+/**
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+ * Excel相关处理
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+ *
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+ * @author lsa
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+ */
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+@NoArgsConstructor(access = AccessLevel.PRIVATE)
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+public class ExcelUtil {
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+
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+ /**
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+ * 同步导入(适用于小数据量)
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+ *
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+ * @param is 输入流
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+ * @return 转换后集合
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+ */
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+ public static <T> List<T> importExcel(InputStream is, Class<T> clazz) {
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+ return EasyExcel.read(is).head(clazz).autoCloseStream(false).sheet().doReadSync();
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+ }
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+
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+
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+ /**
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+ * 使用校验监听器 异步导入 同步返回
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+ *
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+ * @param is 输入流
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+ * @param clazz 对象类型
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+ * @param isValidate 是否 Validator 检验 默认为是
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+ * @return 转换后集合
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+ */
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+ public static <T> ExcelResult<T> importExcel(InputStream is, Class<T> clazz, boolean isValidate) {
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+ DefaultExcelListener<T> listener = new DefaultExcelListener<>(isValidate);
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+ EasyExcel.read(is, clazz, listener).sheet().doRead();
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+ return listener.getExcelResult();
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+ }
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+
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+ /**
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+ * 使用自定义监听器 异步导入 自定义返回
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+ *
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+ * @param is 输入流
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+ * @param clazz 对象类型
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+ * @param listener 自定义监听器
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+ * @return 转换后集合
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+ */
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+ public static <T> ExcelResult<T> importExcel(InputStream is, Class<T> clazz, ExcelListener<T> listener) {
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+ EasyExcel.read(is, clazz, listener).sheet().doRead();
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+ return listener.getExcelResult();
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+ }
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+
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+ /**
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+ * 导出excel
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+ *
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+ * @param list 导出数据集合
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+ * @param sheetName 工作表的名称
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+ * @param clazz 实体类
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+ * @param response 响应体
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+ */
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+ public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, HttpServletResponse response) {
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+ exportExcel(list, sheetName, clazz, false, response);
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+ }
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+
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+ /**
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+ * 导出excel
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+ * @param list
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+ * @param sheetName
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+ * @param clazz
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+ * @param excludeColumnFiledNames
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+ * @param response
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+ * @param <T>
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+ */
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+ public static <T> void exportExcelExclude(List<T> list, String sheetName, Class<T> clazz, Set<String> excludeColumnFiledNames, HttpServletResponse response) {
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+ exportExcel(list, sheetName, clazz, false,excludeColumnFiledNames,null ,response);
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+ }
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+
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+ /**
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+ * 导出excel
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+ * @param list
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+ * @param sheetName
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+ * @param clazz
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+ * @param includeColumnFiledNames
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+ * @param response
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+ * @param <T>
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+ */
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+ public static <T> void exportExcelInclude(List<T> list, String sheetName, Class<T> clazz, Set<String> includeColumnFiledNames, HttpServletResponse response) {
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+ exportExcel(list, sheetName, clazz, false,null,includeColumnFiledNames ,response);
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+ }
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+
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+ /**
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+ * 导出excel
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+ *
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+ * @param list 导出数据集合
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+ * @param sheetName 工作表的名称
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+ * @param clazz 实体类
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+ * @param merge 是否合并单元格
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+ * @param response 响应体
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+ */
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+ public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, boolean merge, HttpServletResponse response) {
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+ try {
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+ resetResponse(sheetName, response);
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+ ServletOutputStream os = response.getOutputStream();
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+ ExcelWriterSheetBuilder builder = EasyExcel.write(os, clazz)
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+ .autoCloseStream(false)
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+ // 自动适配
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+ .registerWriteHandler(new LongestMatchColumnWidthStyleStrategy())
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+ // 大数值自动转换 防止失真
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+ .registerConverter(new ExcelBigNumberConvert())
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+ .sheet(sheetName);
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+ if (merge) {
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+ // 合并处理器
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+ builder.registerWriteHandler(new CellMergeStrategy(list, true));
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+ }
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+ builder.doWrite(list);
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+ } catch (IOException e) {
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+ throw new RuntimeException("导出Excel异常");
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+ }
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+ }
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+
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+ /**
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+ * @description: 导出list<map<String,Object>>类型的数据
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+ * @param
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+ * @return:
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+ * @author liuchuan
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+ * @date: 2022/11/17 21:43
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+ */
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+ public static void noModleWrite(NoModelWriteData data, HttpServletResponse response) {
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+ try {// response.setContentType("application/vnd.ms-excel");
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+ response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
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+ response.setCharacterEncoding("utf-8");
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+ // 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系
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+ String fileName = URLEncoder.encode(data.getFileName(), "UTF-8");
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+ response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xlsx");
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+ // 这里需要设置不关闭流
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+ EasyExcel.write(response.getOutputStream()).head(head(data.getHeadMap())).sheet(data.getFileName()).
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+ doWrite(dataList(data.getDataList(), data.getDataStrMap()));
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ throw new RuntimeException("导出Excel异常");
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+
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+ }
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+ }
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+
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+ /**
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+ * 多sheet动态表头excel导出
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+ *
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+ * @param data 导出数据配置
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+ * @param response http响应
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+ */
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+ public static void exportExcel(NoModelMultipleSheetsWriteData data, HttpServletResponse response) {
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+ try {
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+ resetResponse(data.getFileName(), response);
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+ ExcelWriter excelWriter = EasyExcel.write(response.getOutputStream())
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+ .autoCloseStream(false)
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+ // 大数值自动转换 防止失真
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+ .registerConverter(new ExcelBigNumberConvert())
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+ .build();
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+ List<NoModelSheetData> sheetDataList = data.getSheetDataList();
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+ for (int i = 0; i < sheetDataList.size(); i++) {
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+ NoModelSheetData sheetData = sheetDataList.get(i);
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+ //生成sheet页
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+ WriteSheet sheet = EasyExcel.writerSheet(i, sheetData.getSheetName())
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+ .head(head(sheetData.getHeadNameCn()))
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+ .build();
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+ //获取模型信息,向sheet写入数据
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+ excelWriter.write(dataList(sheetData.getDataList(), sheetData.getHeadNameStr()), sheet);
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+ }
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+ excelWriter.finish();
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+ } catch (Exception e) {
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+ throw new RuntimeException("导出Excel异常");
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+ }
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+ }
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+
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+ //设置表头
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+ private static List<List<String>> head(String[] headMap) {
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+ List<List<String>> list = new ArrayList<List<String>>();
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+
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+ for (String head : headMap) {
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+ List<String> headList = new ArrayList<String>();
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+ headList.add(head);
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+ list.add(headList);
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+ }
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+ return list;
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+ }
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+
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+ //设置导出的数据内容
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+ private static List<List<Object>> dataList(List<Map<String, Object>> dataList, String[] dataStrMap) {
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+ List<List<Object>> list = new ArrayList<List<Object>>();
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+ for (Map<String, Object> map : dataList) {
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+ List<Object> data = new ArrayList<Object>();
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+ for (int i = 0; i < dataStrMap.length; i++) {
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+ data.add(map.get(dataStrMap[i]));
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+ }
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+ list.add(data);
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+ }
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+ return list;
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+ }
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+
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+ public static void dynamicHeadWrite(HttpServletResponse response, List<String> names, String sheetName, String fileName){
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+ try {
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+
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+ //设置返回数据的值跟动态列一一对应
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+// List<List<String>> datas = setData(list,fieldEn);
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+ resetResponse(sheetName, response);
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+ EasyExcel.write(response.getOutputStream())
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+ .head(headData(CollectionUtil.isNotEmpty(names) ? names.toArray(new String[0]) : new String[0]))
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+ .registerWriteHandler(new LongestMatchColumnWidthStyleStrategy())
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+ .sheet(sheetName)
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+ .doWrite(new ArrayList());
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+
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+ } catch (IOException e) {
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+ e.printStackTrace();
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+ response.reset();
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+ response.setCharacterEncoding("utf-8");
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+ response.setContentType("application/json");
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+ try {
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+ response.getWriter().println("打印失败");
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+ } catch (IOException ex) {
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+ ex.printStackTrace();
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+ }
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+ }
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+ }
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+ /**
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+ * 数据动态头传入
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+ */
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+ private static List<List<String>> headData(String[] header) {
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+ List<String> head0 = null;
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+ List<List<String>> list = new LinkedList<List<String>>();
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+ for (String h : header) {
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+ head0 = new LinkedList<>();
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+ head0.add(h);
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+ list.add(head0);
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+ }
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+ return list;
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+ }
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+
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+ /**
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+ * 导出excel
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+ * @param list
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+ * @param sheetName
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+ * @param clazz
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+ * @param merge
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+ * @param excludeColumnFiledNames
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+ * @param includeColumnFiledNames
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+ * @param response
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+ * @param <T>
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+ */
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+ public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, boolean merge, Set<String> excludeColumnFiledNames,Set<String> includeColumnFiledNames,HttpServletResponse response) {
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+ try {
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+ resetResponse(sheetName, response);
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+ ServletOutputStream os = response.getOutputStream();
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+ ExcelWriterSheetBuilder builder = EasyExcel.write(os, clazz)
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+ .autoCloseStream(false)
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+ // 自动适配
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+ .registerWriteHandler(new LongestMatchColumnWidthStyleStrategy())
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+ // 大数值自动转换 防止失真
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+ .registerConverter(new ExcelBigNumberConvert())
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+ .sheet(sheetName);
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+ if (CollectionUtil.isNotEmpty(excludeColumnFiledNames)) {
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+ builder.excludeColumnFieldNames(excludeColumnFiledNames);
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+ }
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+ if (CollectionUtil.isNotEmpty(includeColumnFiledNames)) {
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+ builder.includeColumnFieldNames(includeColumnFiledNames);
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+ }
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+ if (merge) {
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+ // 合并处理器
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+ builder.registerWriteHandler(new CellMergeStrategy(list, true));
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+ }
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+ builder.doWrite(list);
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+ } catch (IOException e) {
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+ throw new RuntimeException("导出Excel异常");
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+ }
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+ }
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+
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+ /**
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+ * 单表多数据模板导出 模板格式为 {.属性}
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+ *
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+ * @param filename 文件名
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+ * @param templatePath 模板路径 resource 目录下的路径包括模板文件名
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+ * 例如: excel/temp.xlsx
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+ * 重点: 模板文件必须放置到启动类对应的 resource 目录下
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+ * @param data 模板需要的数据
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+ */
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+ public static void exportTemplate(List<Object> data, String filename, String templatePath, HttpServletResponse response) {
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+ try {
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+ resetResponse(filename, response);
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+ ClassPathResource templateResource = new ClassPathResource(templatePath);
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+ ExcelWriter excelWriter = EasyExcel.write(response.getOutputStream())
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+ .withTemplate(templateResource.getStream())
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+ .autoCloseStream(false)
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+ // 大数值自动转换 防止失真
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+ .registerConverter(new ExcelBigNumberConvert())
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+ .build();
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+ WriteSheet writeSheet = EasyExcel.writerSheet().build();
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+ if (CollUtil.isEmpty(data)) {
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+ throw new IllegalArgumentException("数据为空");
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+ }
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+ // 单表多数据导出 模板格式为 {.属性}
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+ for (Object d : data) {
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+ excelWriter.fill(d, writeSheet);
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+ }
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+ excelWriter.finish();
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+ } catch (IOException e) {
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+ throw new RuntimeException("导出Excel异常");
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+ }
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+ }
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+
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+ /**
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+ * 多表多数据模板导出 模板格式为 {key.属性}
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+ *
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+ * @param filename 文件名
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+ * @param templatePath 模板路径 resource 目录下的路径包括模板文件名
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+ * 例如: excel/temp.xlsx
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+ * 重点: 模板文件必须放置到启动类对应的 resource 目录下
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+ * @param data 模板需要的数据
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+ */
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+ public static void exportTemplateMultiList(Map<String, Object> data, String filename, String templatePath, HttpServletResponse response) {
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+ try {
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+ resetResponse(filename, response);
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+ ClassPathResource templateResource = new ClassPathResource(templatePath);
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+ ExcelWriter excelWriter = EasyExcel.write(response.getOutputStream())
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+ .withTemplate(templateResource.getStream())
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+ .autoCloseStream(false)
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+ // 大数值自动转换 防止失真
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+ .registerConverter(new ExcelBigNumberConvert())
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+ .build();
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+ WriteSheet writeSheet = EasyExcel.writerSheet().build();
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+ if (CollUtil.isEmpty(data)) {
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+ throw new IllegalArgumentException("数据为空");
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+ }
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+ for (Map.Entry<String, Object> map : data.entrySet()) {
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+ // 设置列表后续还有数据
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+ FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();
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+ if (map.getValue() instanceof Collection) {
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+ // 多表导出必须使用 FillWrapper
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+ excelWriter.fill(new FillWrapper(map.getKey(), (Collection<?>) map.getValue()), fillConfig, writeSheet);
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+ } else {
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+ excelWriter.fill(map.getValue(), writeSheet);
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+ }
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+ }
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+ excelWriter.finish();
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+ } catch (IOException e) {
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+ throw new RuntimeException("导出Excel异常");
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+ }
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+ }
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+
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+ /**
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+ * 重置响应体
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+ */
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+ private static void resetResponse(String sheetName, HttpServletResponse response) throws UnsupportedEncodingException {
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+ String filename = encodingFilename(sheetName);
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+ response.reset();
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+ FileUtils.setAttachmentResponseHeader(response, filename);
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+ response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=UTF-8");
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+ }
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+
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+ /**
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+ * 解析导出值 0=男,1=女,2=未知
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+ *
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+ * @param propertyValue 参数值
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+ * @param converterExp 翻译注解
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+ * @param separator 分隔符
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+ * @return 解析后值
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+ */
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+ public static String convertByExp(String propertyValue, String converterExp, String separator) {
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+ StringBuilder propertyString = new StringBuilder();
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+ String[] convertSource = converterExp.split(",");
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+ for (String item : convertSource) {
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+ String[] itemArray = item.split("=");
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+ if (StringUtils.containsAny(propertyValue, separator)) {
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+ for (String value : propertyValue.split(separator)) {
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+ if (itemArray[0].equals(value)) {
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+ propertyString.append(itemArray[1] + separator);
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+ break;
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+ }
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+ }
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+ } else {
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+ if (itemArray[0].equals(propertyValue)) {
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|
+ return itemArray[1];
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|
|
+ }
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+ }
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+ }
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+ return StringUtils.stripEnd(propertyString.toString(), separator);
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|
+ }
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+
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|
+ /**
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|
|
|
+ * 反向解析值 男=0,女=1,未知=2
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+ *
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|
|
|
+ * @param propertyValue 参数值
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|
|
|
+ * @param converterExp 翻译注解
|
|
|
|
+ * @param separator 分隔符
|
|
|
|
+ * @return 解析后值
|
|
|
|
+ */
|
|
|
|
+ public static String reverseByExp(String propertyValue, String converterExp, String separator) {
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|
|
|
+ StringBuilder propertyString = new StringBuilder();
|
|
|
|
+ String[] convertSource = converterExp.split(",");
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|
|
|
+ for (String item : convertSource) {
|
|
|
|
+ String[] itemArray = item.split("=");
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|
|
+ if (StringUtils.containsAny(propertyValue, separator)) {
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|
|
|
+ for (String value : propertyValue.split(separator)) {
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|
|
|
+ if (itemArray[1].equals(value)) {
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|
|
+ propertyString.append(itemArray[0] + separator);
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|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+ } else {
|
|
|
|
+ if (itemArray[1].equals(propertyValue)) {
|
|
|
|
+ return itemArray[0];
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+ return StringUtils.stripEnd(propertyString.toString(), separator);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 编码文件名
|
|
|
|
+ */
|
|
|
|
+ public static String encodingFilename(String filename) {
|
|
|
|
+ return IdUtil.fastSimpleUUID() + "_" + filename + ".xlsx";
|
|
|
|
+ }
|
|
|
|
+
|
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|
|
+}
|