jar包：
import javax.servlet.http.HttpServletResponse; import java.io.OutputStream; import java.io.File; import jxl.DateCell; import jxl.Sheet; import jxl.Workbook; import jxl.format.Alignment; import jxl.format.Border; import jxl.format.BorderLineStyle; import jxl.format.VerticalAlignment; import jxl.write.Label; import jxl.write.WritableCellFormat; import jxl.write.WritableFont; import jxl.write.WritableSheet; import jxl.write.WritableWorkbook; import jxl.write.WriteException; import jxl.write.biff.RowsExceededException;
一、导入
jsp：
<%@page import="com.sdfrdj.share.Constant"%> <%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <%@ taglib prefix="s" uri="/struts-tags" %> <html > <head> <title></title> <link href="<%=request.getContextPath()%>/website/enroll/images/style.css" rel="stylesheet" type="text/css" /> <link href="<%=request.getContextPath()%>/comm_images/basic.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="<%=request.getContextPath()%>/js/jquery.min.js"></script> <script src="<%=request.getContextPath() %>/js/main.js" type="text/javascript"></script> </head> <script type="text/javascript"> function tips(){ document.getElementById("tips").style.display=""; return true; } </script> <body> <s:form action="createTableAction!importTableDataList.action" theme="simple" id="commentForm" method="post" enctype="multipart/form-data" onsubmit="tips()" > <table width="100%" border="0" cellspacing="0" cellpadding="0" class="bg"> <tr> <td ><table width="100%" border="0" cellspacing="0" cellpadding="0" > <tr> <td id="qtKey" height="10"></td> </tr> <tr> <td><table width="98%" border="0" align="center" cellpadding="0" cellspacing="0" class="work_bg"> <tr> <td class="titlebg"><table width="98%" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td class="font_title" align="center">导入</td> </tr> </table></td> </tr> <tr> <td ><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td> <table width="100%" border="0" cellspacing="0" cellpadding="0" class="tab_bg1"> <tr> <td align="right" class="tab_bg2"><span class="font_red">*</span><label for="gender">自定义表信息导入</label>：</td> <td align="left" > <s:file type="file" name="excel" cssClass="input02"></s:file> <input name="createTableColumn.tableName" id="tableName" type="hidden" value="<s:property value ="createTableColumn.tableName"/>"/> </td> </tr> </table> </td> </tr> <tr id="tips" style="display: none;"> <td class="gray_bg" align="center" height="10"> <font color="red">正在导入中...时间较长,请耐心等待！</font> </td> </tr> <tr> <td class="gray_bg" align="center" height="50"><input type="submit" id="button3" value="提交" class="btn_blue" /> <input type="submit" name="button" id="button" value="关闭" class="btn_blue" onclick="window.close();"/> </td> </tr> <tr> <td style="color: red;"> <s:actionerror/> </td> </tr> </table></td> </tr> </table></td> </tr> <tr> <td height="10"></td> </tr> </table></td> </tr> </table> </s:form> </body> </html>
java：
private File excel;//导入文件 public File getExcel() { return excel; } public void setExcel(File excel) { this.excel = excel; } /** * 导入表数据 * @return */ public String importTableDataList() { try { if (excel != null) { //获取已有的字段 createTableColumnList = createTableService.selectCreateTableColumnInfo(createTableColumn); Map<String, String> columnMap = new HashMap<>(); Map<String, String> dataTypeMap = new HashMap<>(); for (CreateTableColumn createTableColumn : createTableColumnList) { columnMap.put(createTableColumn.getColumnComments(), createTableColumn.getColumnName()); dataTypeMap.put(createTableColumn.getColumnComments(), createTableColumn.getDataType()); } Workbook book = Workbook.getWorkbook(excel); Sheet sheet = book.getSheet(0); int clos = sheet.getColumns();//得到所有的列 int rows = sheet.getRows();//得到所有的行 if (clos < 1 || rows < 2) { this.getRequest().setAttribute("message","文件里面没有数据或者表头，请修改后再导入!"); return "failJsp"; } //得到表头 String [] titles=new String[sheet.getColumns()]; for (int j = 0; j < clos; j++) { titles[j] = sheet.getCell(j, 0).getContents(); } //获取上传文件表头对应的数据库列名 StringBuilder errorStr = new StringBuilder(); StringBuilder columnNameSql = new StringBuilder(); columnNameSql.append("COLUMN_ID"); for (String title : titles) { String columnName = columnMap.get(title); if (StringUtil.isEmp(columnName)) { errorStr.append("文件表头[").append(title).append("],"); } else { columnNameSql.append(",").append(columnName); } } if (errorStr.length() > 0) { errorStr.deleteCharAt(errorStr.length() - 1); errorStr.append("与数据库设置的字段名不对应，请修改后再导入!"); this.getRequest().setAttribute("message",errorStr.toString()); return "failJsp"; } else { StringBuilder saveSql = null; StringBuilder columnValueSql = null; SimpleDateFormat dataFormat = new SimpleDateFormat("yyyy-MM-dd"); for (int i = 1; i < rows; i++) { saveSql = new StringBuilder(); saveSql.append("INSERT INTO ").append(createTableColumn.getTableName()).append("("); columnValueSql = new StringBuilder(); columnValueSql.append("SEQ_CREATE_TABLE.NEXTVAL"); for (int j = 0; j < clos; j++) { String columnValue = sheet.getCell(j, i).getContents();//第一个是列数，第二个是行数 if (StringUtil.isEmp(columnValue)) { columnValueSql.append(",NULL"); } else { if ("DATE".equals(dataTypeMap.get(titles[j]))) { try { columnValue = dataFormat.format(((DateCell) sheet.getCell(j, i)).getDate()); columnValueSql.append(",TO_DATE('").append(columnValue).append("','YYYY-MM-DD')"); } catch (Exception e) { columnValueSql.append(",TO_DATE('").append(columnValue).append("','YYYY-MM-DD')"); } } else { columnValueSql.append(",'").append(columnValue).append("'"); } } } saveSql.append(columnNameSql).append(") VALUES(").append(columnValueSql).append(")"); Map<String, String> saveSqlMap = new HashMap<>(); saveSqlMap.put("CREATE_SQL", saveSql.toString()); createTableService.createTable(saveSqlMap); } } } else { this.getRequest().setAttribute("message",Message.TI_SHI_FAIL); return "failJsp"; } } catch (Exception e) { e.printStackTrace(); this.getRequest().setAttribute("message","保存失败，请检查数据的有效性！"); return "failJsp"; } this.getRequest().setAttribute("message", Message.TI_SHI_SUCCESS); return "successJsp"; }
二、导出
java：
/** * 导出表数据 * @return */ public String exportTable() { try { HttpServletResponse response = ServletActionContext.getResponse(); createTableService.selectExportTableData(createTableColumn, response); } catch (Exception e) { e.printStackTrace(); } return null; } @Override public List<Map<String, Object>> selectExportTableData(CreateTableColumn createTableColumn, HttpServletResponse response) throws Exception { CreateTable queryCreateTable = new CreateTable(); queryCreateTable.setTableName(createTableColumn.getTableName()); CreateTable createTable = createTableDao.selectCreateTable(queryCreateTable); String excelName = createTable.getTableComments() + "信息"; List<CreateTableColumn> createTableColumnList = createTableDao.selectCreateTableColumnInfo(createTableColumn); Map<String, Object> paramsMap = new HashMap<>(); paramsMap.put("tableName", createTableColumn.getTableName()); List<Map<String, Object>> tableDataList = createTableDao.selectTableDataList(paramsMap); response.setHeader("Content-disposition", "attachment; filename=" + java.net.URLEncoder.encode(excelName+".xls", "utf-8") + ""); // 设定输出文件头 response.setContentType("application/msexcel");// 定义输出类型 OutputStream os = response.getOutputStream(); this.createExcel(os, createTableColumnList, tableDataList, excelName); return tableDataList; } private void createExcel(OutputStream os, List<CreateTableColumn> createTableColumnList, List<Map<String, Object>> tableDataList, String excelName) { try { WritableWorkbook book = Workbook.createWorkbook(os); WritableFont font = new WritableFont(WritableFont.createFont("宋体_GB2312"), 9, WritableFont.NO_BOLD);// 带有自行的对象 WritableCellFormat format = new WritableCellFormat(font); format.setAlignment(Alignment.CENTRE);// 设置水平对齐方式 format.setVerticalAlignment(VerticalAlignment.CENTRE);// 垂直对齐 format.setBorder(Border.ALL, BorderLineStyle.THIN);// 设置边框All代表所有和线条的样式 format.setWrap(true);// 是否换行 WritableSheet sheet = null;// 定义一个工作表 sheet = book.createSheet(excelName, 0);// 创建一个工作表定义名称第一个 sheet.setColumnView(0, 7); if (createTableColumnList != null && createTableColumnList.size() > 0) { for (int i = 0; i < createTableColumnList.size(); i++) { sheet.setColumnView(i + 1, 30); } } this.createTitle(sheet, createTableColumnList); if (tableDataList != null && tableDataList.size() > 0) { for (int i = 0; i < tableDataList.size(); i++) { Map<String, Object> map = tableDataList.get(i); sheet.addCell(new jxl.write.Number(0, i + 1, i + 1, format));// 序列（Number(列数,行数,序号,format)） int c = 0; for (CreateTableColumn createTableColumn : createTableColumnList) { c++; if (StringUtil.isEmp(map.get(createTableColumn.getColumnName()))) { sheet.addCell(new Label(c, i + 1, "", format)); } else { if ("DATE".equals(createTableColumn.getDataType())) { SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); sheet.addCell(new Label(c, i + 1, dateFormat.format(map.get(createTableColumn.getColumnName())), format)); } else { sheet.addCell(new Label(c, i + 1, (map.get(createTableColumn.getColumnName())).toString(), format)); } } } } } book.write(); book.close(); } catch (Exception e) { e.printStackTrace(); } } private void createTitle(WritableSheet sheet, List<CreateTableColumn> createTableColumnList) throws RowsExceededException, WriteException { //行说明标题 WritableFont headFont=new WritableFont(WritableFont.createFont("宋体_GB2312"),12,WritableFont.BOLD); WritableCellFormat headFormat=new WritableCellFormat(headFont); headFormat.setAlignment(Alignment.CENTRE); headFormat.setVerticalAlignment(VerticalAlignment.CENTRE); headFormat.setBorder(Border.ALL,BorderLineStyle.THIN); headFormat.setWrap(true); headFormat.setVerticalAlignment(VerticalAlignment.CENTRE); Label label=new Label(0,0,"序号",headFormat); sheet.addCell(label); int i = 0; for (CreateTableColumn createTableColumn : createTableColumnList) { i++; label=new Label(i,0,createTableColumn.getColumnComments(),headFormat); sheet.addCell(label); } }