From 30c89b33fefbec967e0913332b2f0018cb2b31ec Mon Sep 17 00:00:00 2001 From: RuoYi Date: Sun, 26 Sep 2021 09:03:01 +0800 Subject: [PATCH] =?UTF-8?q?Excel=E6=B3=A8=E8=A7=A3=E6=94=AF=E6=8C=81?= =?UTF-8?q?=E5=AF=BC=E5=85=A5=E5=AF=BC=E5=87=BA=E6=A0=87=E9=A2=98=E4=BF=A1?= =?UTF-8?q?=E6=81=AF?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../com/ruoyi/common/utils/poi/ExcelUtil.java | 148 +++++++++++++++--- 1 file changed, 126 insertions(+), 22 deletions(-) diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java index 38847905..b9f9ac28 100644 --- a/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java +++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java @@ -47,6 +47,7 @@ import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.VerticalAlignment; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.ss.usermodel.WorkbookFactory; +import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.ss.util.CellRangeAddressList; import org.apache.poi.util.IOUtils; import org.apache.poi.xssf.streaming.SXSSFWorkbook; @@ -125,6 +126,16 @@ public class ExcelUtil */ private List fields; + /** + * 当前行号 + */ + private int rownum; + + /** + * 标题 + */ + private String title; + /** * 最大高度 */ @@ -150,7 +161,7 @@ public class ExcelUtil this.clazz = clazz; } - public void init(List list, String sheetName, Type type) + public void init(List list, String sheetName, String title, Type type) { if (list == null) { @@ -159,8 +170,27 @@ public class ExcelUtil this.list = list; this.sheetName = sheetName; this.type = type; + this.title = title; createExcelField(); createWorkbook(); + createTitle(); + } + + /** + * 创建excel第一行标题 + */ + public void createTitle() + { + if (StringUtils.isNotEmpty(title)) + { + Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0); + titleRow.setHeightInPoints(30); + Cell titleCell = titleRow.createCell(0); + titleCell.setCellStyle(styles.get("title")); + titleCell.setCellValue(title); + sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(), + this.fields.size() - 1)); + } } /** @@ -171,17 +201,30 @@ public class ExcelUtil */ public List importExcel(InputStream is) throws Exception { - return importExcel(StringUtils.EMPTY, is); + return importExcel(is, 0); + } + + /** + * 对excel表单默认第一个索引名转换成list + * + * @param is 输入流 + * @param titleNum 标题占用行数 + * @return 转换后集合 + */ + public List importExcel(InputStream is, int titleNum) throws Exception + { + return importExcel(StringUtils.EMPTY, is, titleNum); } /** * 对excel表单指定表格索引名转换成list * * @param sheetName 表格索引名 + * @param titleNum 标题占用行数 * @param is 输入流 * @return 转换后集合 */ - public List importExcel(String sheetName, InputStream is) throws Exception + public List importExcel(String sheetName, InputStream is, int titleNum) throws Exception { this.type = Type.IMPORT; this.wb = WorkbookFactory.create(is); @@ -210,7 +253,7 @@ public class ExcelUtil // 定义一个map用于存放excel列的序号和field. Map cellMap = new HashMap(); // 获取表头 - Row heard = sheet.getRow(0); + Row heard = sheet.getRow(titleNum); for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++) { Cell cell = heard.getCell(i); @@ -243,7 +286,7 @@ public class ExcelUtil } } } - for (int i = 1; i <= rows; i++) + for (int i = titleNum + 1; i <= rows; i++) { // 从第2行开始取数据,默认第一行是表头. Row row = sheet.getRow(i); @@ -369,7 +412,20 @@ public class ExcelUtil */ public AjaxResult exportExcel(List list, String sheetName) { - this.init(list, sheetName, Type.EXPORT); + return exportExcel(list, sheetName, StringUtils.EMPTY); + } + + /** + * 对list数据源将其里面的数据导入到excel表单 + * + * @param list 导出数据集合 + * @param sheetName 工作表的名称 + * @param title 标题 + * @return 结果 + */ + public AjaxResult exportExcel(List list, String sheetName, String title) + { + this.init(list, sheetName, title, Type.EXPORT); return exportExcel(); } @@ -382,11 +438,26 @@ public class ExcelUtil * @return 结果 * @throws IOException */ - public void exportExcel(HttpServletResponse response, List list, String sheetName) throws IOException + public void exportExcel(HttpServletResponse response, List list, String sheetName)throws IOException + { + exportExcel(response, list, sheetName, StringUtils.EMPTY); + } + + /** + * 对list数据源将其里面的数据导入到excel表单 + * + * @param response 返回数据 + * @param list 导出数据集合 + * @param sheetName 工作表的名称 + * @param title 标题 + * @return 结果 + * @throws IOException + */ + public void exportExcel(HttpServletResponse response, List list, String sheetName, String title) throws IOException { response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); response.setCharacterEncoding("utf-8"); - this.init(list, sheetName, Type.EXPORT); + this.init(list, sheetName, title, Type.EXPORT); exportExcel(response.getOutputStream()); } @@ -398,7 +469,19 @@ public class ExcelUtil */ public AjaxResult importTemplateExcel(String sheetName) { - this.init(null, sheetName, Type.IMPORT); + return importTemplateExcel(sheetName, StringUtils.EMPTY); + } + + /** + * 对list数据源将其里面的数据导入到excel表单 + * + * @param sheetName 工作表的名称 + * @param title 标题 + * @return 结果 + */ + public AjaxResult importTemplateExcel(String sheetName, String title) + { + this.init(null, sheetName, title, Type.IMPORT); return exportExcel(); } @@ -409,10 +492,22 @@ public class ExcelUtil * @return 结果 */ public void importTemplateExcel(HttpServletResponse response, String sheetName) throws IOException + { + importTemplateExcel(response, sheetName); + } + + /** + * 对list数据源将其里面的数据导入到excel表单 + * + * @param sheetName 工作表的名称 + * @param title 标题 + * @return 结果 + */ + public void importTemplateExcel(HttpServletResponse response, String sheetName, String title) throws IOException { response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); response.setCharacterEncoding("utf-8"); - this.init(null, sheetName, Type.IMPORT); + this.init(null, sheetName, title, Type.IMPORT); exportExcel(response.getOutputStream()); } @@ -473,13 +568,13 @@ public class ExcelUtil public void writeSheet() { // 取出一共有多少个sheet. - double sheetNo = Math.ceil(list.size() / sheetSize); - for (int index = 0; index <= sheetNo; index++) + int sheetNo = Math.max(1, (int) Math.ceil(list.size() * 1.0 / sheetSize)); + for (int index = 0; index < sheetNo; index++) { createSheet(sheetNo, index); // 产生一行 - Row row = sheet.createRow(0); + Row row = sheet.createRow(rownum); int column = 0; // 写入各个字段的列头名称 for (Object[] os : fields) @@ -507,7 +602,7 @@ public class ExcelUtil int endNo = Math.min(startNo + sheetSize, list.size()); for (int i = startNo; i < endNo; i++) { - row = sheet.createRow(i + 1 - startNo); + row = sheet.createRow(i + 1 + rownum - startNo); // 得到导出对象. T vo = (T) list.get(i); int column = 0; @@ -535,6 +630,16 @@ public class ExcelUtil CellStyle style = wb.createCellStyle(); style.setAlignment(HorizontalAlignment.CENTER); style.setVerticalAlignment(VerticalAlignment.CENTER); + Font titleFont = wb.createFont(); + titleFont.setFontName("Arial"); + titleFont.setFontHeightInPoints((short) 16); + titleFont.setBold(true); + style.setFont(titleFont); + styles.put("title", style); + + style = wb.createCellStyle(); + style.setAlignment(HorizontalAlignment.CENTER); + style.setVerticalAlignment(VerticalAlignment.CENTER); style.setBorderRight(BorderStyle.THIN); style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex()); style.setBorderLeft(BorderStyle.THIN); @@ -1117,6 +1222,9 @@ public class ExcelUtil public void createWorkbook() { this.wb = new SXSSFWorkbook(500); + this.sheet = wb.createSheet(); + wb.setSheetName(0, sheetName); + this.styles = createStyles(wb); } /** @@ -1125,17 +1233,13 @@ public class ExcelUtil * @param sheetNo sheet数量 * @param index 序号 */ - public void createSheet(double sheetNo, int index) + public void createSheet(int sheetNo, int index) { - this.sheet = wb.createSheet(); - this.styles = createStyles(wb); // 设置工作表的名称. - if (sheetNo == 0) - { - wb.setSheetName(index, sheetName); - } - else + if (sheetNo > 1 && index > 0) { + this.sheet = wb.createSheet(); + this.createTitle(); wb.setSheetName(index, sheetName + index); } }