1.如何通过元数据拿到数据库的信息？ 
2.如何用Java生成Excel表？ 
3.将数据库中的表导出生成Excel案例

如何通过元数据拿到数据库的信息

元数据：描述数据的数据

Java中使用元数据的两个方法

  • DatabaseMetaData 通过连接可以拿到的信息：数据库软件，所有数据库名，所有数据库里面的表名，描述数据库的元数据
  • ResultSetMetaData 拿到的表结构信息：获得表的列数目 类型和属性 ，描述数据库表的元数据

DatabaseMetaData 的使用学习

@Test// DatabaseMetaData 通过连接可以拿到的信息：数据库软件，所有数据库名，所有数据库里面的表名 public void DatabaseMetaData_Demo() throws Exception{ // 自己写的工具包来获得数据库连接 Connection con = ConnUtils4.getConn(); //DatabaseMetaData 通过连接获得 DatabaseMetaData dbmt = con.getMetaData(); // 数据库软件名 System.out.println(" 数据库软件名:"+dbmt.getDatabaseProductName()); // 拿到所有数据库名字 ResultSet rs =dbmt.getCatalogs(); List<String> tablenames = new ArrayList<String>(); while(rs.next()){ String tabname=rs.getString("TABLE_CAT"); tablenames.add(tabname); System.out.println("数据库名字:"+tabname); } System.out.println("--------------");; //拿到某个数据库李曼所有的表名---可以指定表的类型 rs = dbmt.getTables("ake", "ake", null, new String[]{"TABLE","VIEW"}); while(rs.next()){ System.out.println("数据库ake里的表名:"+rs.getString("TABL````` _NAME")); } }

ResultSetMetaData的使用学习

@Test// ResultSetMetaData 拿到的表结构信息：获得表的列数目 类型和属性 public void ResultSetMetaData_Demo2() throws Exception{ // 自己写的工具包来获得数据库连接 Connection con = ConnUtils4.getConn(); String sql = "select * from ake.book"; Statement st = con.createStatement(); ResultSet rs = st.executeQuery(sql); // ResultSetMetaData 通过 查询的返回集获取 ResultSetMetaData rsmt = rs.getMetaData(); //获得表的列数 int n =rsmt.getColumnCount(); //类型---某一列 // getColumnTypeName:INT //某医疗的名字 // getColumnName:id //某一列的长度 // getColumnDisplaySize:11 for(int i=1;i<n;i++){ System.out.println(rsmt.getTableName(i)+"表的第"+i+"列描述信息"); System.out.println("getColumnDisplaySize:"+rsmt.getColumnDisplaySize(i)); System.out.println("getColumnLabel:"+rsmt.getColumnLabel(i)); System.out.println("getColumnName:"+rsmt.getColumnName(i)); System.out.println("getColumnType:"+rsmt.getColumnType(i)); System.out.println("getColumnTypeName:"+rsmt.getColumnTypeName(i)); System.out.println("getPrecision:"+rsmt.getPrecision(i)); System.out.println("getScale:"+rsmt.getScale(i)); System.out.println("getSchemaName:"+rsmt.getSchemaName(i)); System.out.println("------------"); } con.close(); }

拿出ake表里面所有的内容~~~~

// 拿出ake表里面所有的内容~~~~ public static void main(String[] args) throws Exception{ Connection con = ConnUtils4.getConn(); System.out.println(con); DatabaseMetaData dbmt = con.getMetaData(); //拿到所有的ake所有表名 ResultSet rs =dbmt.getTables("ake", "ake", null, new String[]{"TABLE","VIEW"}); List<String> tablenames = new ArrayList<String>(); while(rs.next()){ String tablename = rs.getString("TABLE_NAME"); tablenames.add(tablename); } for(String tablename:tablenames){ System.out.println(tablename+"表："); if(tablename.equals("img")){ continue; } String sql = "select * from ake."+tablename; Statement st = con.createStatement(); ResultSet RS = st.executeQuery(sql); ResultSetMetaData rsmt = RS.getMetaData(); // 拿到列数 int colnums = rsmt.getColumnCount(); for(int i=1;i<=colnums;i++){ //拿到表头信息 String colName = rsmt.getColumnName(i); System.out.print(colName+"\t"); } System.out.println(); while(RS.next()){ for(int i=1;i<=colnums;i++){ //拿到表信息 System.out.print( RS.getString(i)+"\t"); } System.out.println(); } } con.close(); }

我把那到的表格信息输出 
 

如何用Java生成Excel表？

需要一个插件工具包 

@Test public void Workbook_demo() throws Exception{ // 建立一个工作表--相当于一个数据库 Workbook book = new HSSFWorkbook(); // 数据库中的一个表 Sheet sheet1 =book.createSheet("表1"); // 行 Row row =sheet1.createRow(4); // 单元格 Cell cell = row.createCell(3); // 写入数据 cell.setCellValue("通过java写的Excel"); // 保存到银盘 book.write( new FileOutputStream("d:a/a.xls")); }

将数据库中的表导出生成Excel案例

public static void main(String[] args) throws Exception { //把数据库里所有的信息导入到Excel表中~ Connection con = ConnUtils4.getConn(); DatabaseMetaData dbmt = con.getMetaData(); //要通过 DatabaseMetaData 拿到所有数据库的名字 List<String> Database_Names = new ArrayList<String>(); ResultSet rs =dbmt.getCatalogs(); while(rs.next()){ Database_Names.add( rs.getString("TABLE_CAT")); } //DatabaseMetaData 拿到所有数据表名 int m = 0; for(String Database_Name:Database_Names){ if(!Database_Name.equals("ake")){ continue; } // if(m++>=3){ // break; // } // 一个数据库对于一个 Excel文档~ Workbook book = new HSSFWorkbook(); rs = dbmt.getTables(Database_Name, Database_Name, null, new String[]{"TABLE","VIEW"}); //封装所有表名 List<String> Table_Names = new ArrayList<String>(); while(rs.next()){ Table_Names.add( rs.getString("TABLE_NAME")); } for(String Table_Name:Table_Names){ if("img".equals(Table_Name) ||"note".equals(Table_Name) ){ // img为二进制文件导入会出错 continue; } //创建一个表 Sheet sheet = book.createSheet(Table_Name); Statement st = con.createStatement(); String sql = "select * from "+Database_Name+"."+Table_Name; // System.out.println("sql:"+sql); rs = st.executeQuery(sql); //设置表头信息 Row row1 = sheet.createRow(0); ResultSetMetaData rsmd = rs.getMetaData(); int colnum = rsmd.getColumnCount(); for(int i=1;i<=colnum;i++){ String name = rsmd.getColumnName(i); Cell cell = row1.createCell(i-1); cell.setCellValue(name); // System.out.print(name+"\t"); } // System.out.println(); //设置表格信息 int idx = 1; while(rs.next()){ Row row = sheet.createRow(idx++); for(int i=1;i<=colnum;i++){ String str = rs.getString(i); // System.out.print(str+"\t"); Cell cell = row.createCell(i-1); cell.setCellValue(str); } // System.out.println(); } } book.write( new FileOutputStream( "d:a/"+Database_Name+".xls")); } }

执行结果就成功啦！ 
 
 

  1. /**
  2.      * excel
  3.      * @param request
  4.      * @param resp
  5.      * @throws UnsupportedEncodingException
  6.      */
  7.     @RequestMapping(value = "/exportReceiptReport", method = RequestMethod.GET)
  8.     @ResponseBody
  9.     public void exportReceiptReport(HttpServletRequest request, HttpServletResponse response,JyHTMLpurchaseinfoApiForm form) throws IOException {
  10.         HSSFWorkbook wb = new HSSFWorkbook();
  11.         request.setCharacterEncoding("UTF-8");
  12.         response.setCharacterEncoding("UTF-8");
  13.         response.setContentType("application/x-download");
  14.         Date d = new Date();
  15.         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
  16.         String now = sdf.format(d);
  17.         String fileName = "采购"+now+".xls";
  18.         fileName = URLEncoder.encode(fileName, "UTF-8");
  19.         response.addHeader("Content-Disposition", "attachment;filename=" + fileName);
  20.         HSSFSheet sheet = wb.createSheet("sheet1");
  21.         sheet.setDefaultRowHeight((short) ( * ));
  22.         HSSFFont font = wb.createFont();
  23.         font.setFontName("宋体");
  24.         font.setFontHeightInPoints((short) );
  25.         HSSFRow row = sheet.createRow((int) );
  26.         sheet.createRow((int) );
  27.         sheet.createRow((int) );
  28.         sheet.createRow((int) );
  29.         sheet.createRow((int) );
  30.         sheet.createRow((int) );
  31.         sheet.createRow((int) );
  32.         sheet.createRow((int) );
  33.         HSSFCellStyle style = wb.createCellStyle();
  34.         style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
  35.  
  36.         HSSFCell cell = row.createCell();
  37.         cell.setCellValue("收货");
  38.         cell.setCellStyle(style);
  39.         cell = row.createCell();
  40.         cell.setCellValue("来源");
  41.         cell.setCellStyle(style);
  42.         cell = row.createCell();
  43.         cell.setCellValue("入库");
  44.         cell.setCellStyle(style);
  45.         cell = row.createCell();
  46.         cell.setCellValue("名称");
  47.         cell.setCellStyle(style);
  48.         cell = row.createCell();
  49.         cell.setCellValue("商品名称");
  50.         cell.setCellStyle(style);
  51.         cell = row.createCell();
  52.         cell.setCellValue("单位");
  53.         cell.setCellStyle(style);
  54.         cell = row.createCell();
  55.         cell.setCellValue("规格");
  56.         cell.setCellStyle(style);
  57.         cell = row.createCell();
  58.         cell.setCellValue("数量");
  59.         cell.setCellStyle(style);
  60.         cell = row.createCell();
  61.         cell.setCellValue("单价");
  62.         cell.setCellStyle(style);
  63.         cell = row.createCell();
  64.         cell.setCellValue("金额");
  65.         cell.setCellStyle(style);
  66.         cell = row.createCell();
  67.         cell.setCellValue("用户名称");
  68.         cell.setCellStyle(style);
  69.  
  70.         List list = SF.JYPURCHASEINFO_SERVICE.exportReceiptReport(form);
  71.         for (int i = ; i < list.size(); i++) {
  72.             HSSFRow row1 = sheet.createRow(i+);
  73.             Map<String, Object> map = (Map<String,Object>)list.get(i);
  74.             row1.createCell().setCellValue((map.get("receipt_no") != null ? map.get("receipt_no") : "").toString());
  75.             row1.createCell().setCellValue((map.get("purchase_no") != null ? map.get("purchase_no") : "").toString());
  76.             row1.createCell().setCellValue((map.get("value") != null ? map.get("value") : "").toString());
  77.             row1.createCell().setCellValue((map.get("supplier_name") != null ? map.get("supplier_name") : "").toString());
  78.             row1.createCell().setCellValue((map.get("packing_name") != null ? map.get("packing_name") : "").toString());
  79.             row1.createCell().setCellValue((map.get("purchase_unit") != null ? map.get("purchase_unit") : "").toString());
  80.             row1.createCell().setCellValue((map.get("packing_spec") != null ? map.get("packing_spec") : "").toString());
  81.             row1.createCell().setCellValue((map.get("boxcount") != null ? map.get("boxcount") : "").toString()+
  82.                     (map.get("packing_unit") != null ? map.get("packing_unit") : "").toString()+
  83.                     (map.get("pingCount") != null ? map.get("pingCount") : "").toString()+
  84.                     (map.get("item_unit") != null ? map.get("item_unit") : "").toString());
  85.             row1.createCell().setCellValue((map.get("purchase_price") != null ? map.get("purchase_price") : "").toString());
  86.             row1.createCell().setCellValue((map.get("name") != null ? map.get("name") : "").toString());
  87.         }
    　　　　　//sheet.autoSizeColumn((short)0); //调整第一列宽度. 　
  88.         try {
  89.             OutputStream out = response.getOutputStream();
  90.             wb.write(out);
  91.             out.flush();
  92.             out.close();
  93.         } catch (ServiceException e) {
  94.             logger.info ("ServiceException=====导出excel异常====" + e);
  95.             e.printStackTrace();
  96.         } catch (Exception e1) {
  97.             logger.info ("Exception=====导出excel异常====" + e1);
  98.             e1.printStackTrace();
  99.         }
  100.     }

多个excel:

  1. /**
  2.      * 费用结算清单导出:
  3.      */
  4.     @RequestMapping(value = "/exportDealerCosts", method = RequestMethod.GET)
  5.     @ResponseBody
  6.     public void exportDealerCosts(HttpServletRequest request, HttpServletResponse response,JyDealerHomeform form) throws IOException {
  7.         HSSFWorkbook wb = new HSSFWorkbook();
  8.         request.setCharacterEncoding("UTF-8");
  9.         response.setCharacterEncoding("UTF-8");
  10.         response.setContentType("application/x-download");
  11.         Date d = new Date();
  12.         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
  13.         String now = sdf.format(d);
  14.         String fileName = "费用结算清单"+now+".xls";
  15.         fileName = URLEncoder.encode(fileName, "UTF-8");
  16.         response.addHeader("Content-Disposition", "attachment;filename=" + fileName);
  17.         //合计
  18.         HSSFSheet sheet = wb.createSheet("费用结算清单");
  19.         sheet.setDefaultRowHeight((short) ( * ));
  20.         HSSFFont font = wb.createFont();
  21.         font.setFontName("宋体");
  22.         font.setFontHeightInPoints((short) );
  23.         HSSFRow row = sheet.createRow((int) );
  24.         sheet.createRow((int) );
  25.         sheet.createRow((int) );
  26.         sheet.createRow((int) );
  27.         sheet.createRow((int) );
  28.         sheet.createRow((int) );
  29.         sheet.createRow((int) );
  30.         sheet.createRow((int) );
  31.         HSSFCellStyle style = wb.createCellStyle();
  32.         style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
  33.         HSSFCell cell = row.createCell();
  34.         cell.setCellValue("公司名称");
  35.         cell.setCellStyle(style);
  36.         cell = row.createCell();
  37.         cell.setCellValue("仓储费");
  38.         cell.setCellStyle(style);
  39.         cell = row.createCell();
  40.         cell.setCellValue("配送费");
  41.         cell.setCellStyle(style);
  42.         cell = row.createCell();
  43.         cell.setCellValue("回空配送费");
  44.         cell.setCellStyle(style);
  45.         cell = row.createCell();
  46.         cell.setCellValue("退货配偶费");
  47.         cell.setCellStyle(style);
  48.         cell = row.createCell();
  49.         cell.setCellValue("入出库费");
  50.         cell.setCellStyle(style);
  51.         List dealerCosts = SF.JYDEALER_SERVICE.dealerCosts(form);
  52.         for (int i = ; i < dealerCosts.size(); i++) {
  53.             HSSFRow row1 = sheet.createRow(i+);
  54.             Map<String, Object> map = (Map<String,Object>)dealerCosts.get(i);
  55.             row1.createCell().setCellValue((map.get("name") != null ? map.get("name") : "").toString());
  56.             row1.createCell().setCellValue((map.get("cc_fee") != null ? map.get("cc_fee") : "").toString());
  57.             row1.createCell().setCellValue((map.get("ps_fee") != null ? map.get("ps_fee") : "").toString());
  58.             row1.createCell().setCellValue((map.get("hkps_fee") != null ? map.get("hkps_fee") : "").toString());
  59.             row1.createCell().setCellValue((map.get("thps_fee") != null ? map.get("thps_fee") : "").toString());
  60.             row1.createCell().setCellValue((map.get("rc_fee") != null ? map.get("rc_fee") : "").toString());
  61.         }
  62.  
  63.         //仓储费
  64.         HSSFSheet sheet2 = wb.createSheet("仓储费明细");
  65.         sheet2.setDefaultRowHeight((short) ( * ));
  66.         HSSFRow row2 = sheet2.createRow((int) );
  67.         sheet2.createRow((int) );
  68.         sheet2.createRow((int) );
  69.         sheet2.createRow((int) );
  70.         sheet2.createRow((int) );
  71.         sheet2.createRow((int) );
  72.         sheet2.createRow((int) );
  73.         sheet2.createRow((int) );
  74.         HSSFCell cell2 = row2.createCell();
  75.         cell2.setCellValue("日期");
  76.         cell2.setCellStyle(style);
  77.         cell2 = row2.createCell();
  78.         cell2.setCellValue("公司名称");
  79.         cell2.setCellStyle(style);
  80.         cell2 = row2.createCell();
  81.         cell2.setCellValue("商品类型");
  82.         cell2.setCellStyle(style);
  83.         cell2 = row2.createCell();
  84.         cell2.setCellValue("商品名称");
  85.         cell2.setCellStyle(style);
  86.         cell2 = row2.createCell();
  87.         cell2.setCellValue("库存件数");
  88.         cell2.setCellStyle(style);
  89.         cell2 = row2.createCell();
  90.         cell2.setCellValue("总重量");
  91.         cell2.setCellStyle(style);
  92.         cell2 = row2.createCell();
  93.         cell2.setCellValue("仓储费");
  94.         cell2.setCellStyle(style);
  95.         List dealerStorageFee = SF.JYDEALER_SERVICE.dealerStorageFee(form);
  96.         for (int i = ; i < dealerStorageFee.size(); i++) {
  97.             HSSFRow row1 = sheet2.createRow(i+);
  98.             Map<String, Object> map = (Map<String,Object>)dealerStorageFee.get(i);
  99.             row1.createCell().setCellValue((map.get("calendarDate") != null ? map.get("calendarDate") : "").toString());
  100.             row1.createCell().setCellValue((map.get("dealerName") != null ? map.get("dealerName") : "").toString());
  101.             row1.createCell().setCellValue((map.get("itemType") != null ? map.get("itemType") : "").toString());
  102.             row1.createCell().setCellValue((map.get("packingName") != null ? map.get("packingName") : "").toString());
  103.             row1.createCell().setCellValue((map.get("packingQty") != null ? map.get("packingQty") : "").toString());
  104.             row1.createCell().setCellValue((map.get("totalWeight") != null ? map.get("totalWeight") : "").toString());
  105.             row1.createCell().setCellValue((map.get("totalAmount") != null ? map.get("totalAmount") : "").toString());
  106.         }
  107.  
  108.         //配送费
  109.         HSSFSheet sheet3 = wb.createSheet("配送费明细");
  110.         sheet3.setDefaultRowHeight((short) ( * ));
  111.         HSSFRow row3 = sheet3.createRow((int) );
  112.         sheet3.createRow((int) );
  113.         sheet3.createRow((int) );
  114.         sheet3.createRow((int) );
  115.         sheet3.createRow((int) );
  116.         sheet3.createRow((int) );
  117.         sheet3.createRow((int) );
  118.         sheet3.createRow((int) );
  119.         HSSFCell cell3 = row3.createCell();
  120.         cell3.setCellValue("日期");
  121.         cell3.setCellStyle(style);
  122.         cell3 = row3.createCell();
  123.         cell3.setCellValue("公司名称");
  124.         cell3.setCellStyle(style);
  125.         cell3 = row3.createCell();
  126.         cell3.setCellValue("费用区分");
  127.         cell3.setCellStyle(style);
  128.         cell3 = row3.createCell();
  129.         cell3.setCellValue("费项");
  130.         cell3.setCellStyle(style);
  131.         cell3 = row3.createCell();
  132.         cell3.setCellValue("金额");
  133.         cell3.setCellStyle(style);
  134.         cell3 = row3.createCell();
  135.         cell3.setCellValue("客户");
  136.         cell3.setCellStyle(style);
  137.         cell3 = row3.createCell();
  138.         cell3.setCellValue("结算对象");
  139.         cell3.setCellStyle(style);
  140.         cell3 = row3.createCell();
  141.         cell3.setCellValue("订单编号");
  142.         cell3.setCellStyle(style);
  143.         cell3 = row3.createCell();
  144.         cell3.setCellValue("送货件数");
  145.         cell3.setCellStyle(style);
  146.         cell3 = row3.createCell();
  147.         cell3.setCellValue("总重量");
  148.         cell3.setCellStyle(style);
  149.         cell3 = row3.createCell();
  150.         cell3.setCellValue("送货单号");
  151.         cell3.setCellStyle(style);
  152.         cell3 = row3.createCell();
  153.         cell3.setCellValue("配送方式");
  154.         cell3.setCellStyle(style);
  155.         List dealerDeliverFee = SF.JYDEALER_SERVICE.dealerDeliverFee(form);
  156.         for (int i = ; i < dealerDeliverFee.size(); i++) {
  157.             HSSFRow row1 = sheet3.createRow(i+);
  158.             Map<String, Object> map = (Map<String,Object>)dealerDeliverFee.get(i);
  159.             row1.createCell().setCellValue((map.get("confirm_date") != null ? map.get("confirm_date") : "").toString());
  160.             row1.createCell().setCellValue((map.get("name") != null ? map.get("name") : "").toString());
  161.             row1.createCell().setCellValue((map.get("fee_type_name") != null ? map.get("fee_type_name") : "").toString());
  162.             row1.createCell().setCellValue((map.get("calculate_subject") != null ? map.get("calculate_subject") : "").toString());
  163.             row1.createCell().setCellValue((map.get("out_amount") != null ? map.get("out_amount") : "").toString());
  164.             row1.createCell().setCellValue((map.get("customer_name") != null ? map.get("customer_name") : "").toString());
  165.             row1.createCell().setCellValue((map.get("source_type_name") != null ? map.get("source_type_name") : "").toString());
  166.             row1.createCell().setCellValue((map.get("source_order_no") != null ? map.get("source_order_no") : "").toString());
  167.             row1.createCell().setCellValue((map.get("box_count") != null ? map.get("box_count") : "").toString());
  168.             row1.createCell().setCellValue((map.get("weight") != null ? map.get("weight") : "").toString());
  169.             row1.createCell().setCellValue((map.get("deliver_no") != null ? map.get("deliver_no") : "").toString());
  170.             row1.createCell().setCellValue((map.get("value") != null ? map.get("value") : "").toString());
  171.         }
  172.  
  173.         //回空配送费
  174.         HSSFSheet sheet4 = wb.createSheet("回空配送费明细");
  175.         sheet4.setDefaultRowHeight((short) ( * ));
  176.         HSSFRow row4 = sheet4.createRow((int) );
  177.         sheet4.createRow((int) );
  178.         sheet4.createRow((int) );
  179.         sheet4.createRow((int) );
  180.         sheet4.createRow((int) );
  181.         sheet4.createRow((int) );
  182.         sheet4.createRow((int) );
  183.         sheet4.createRow((int) );
  184.         HSSFCell cell4 = row4.createCell();
  185.         cell4.setCellValue("日期");
  186.         cell4.setCellStyle(style);
  187.         cell4 = row4.createCell();
  188.         cell4.setCellValue("公司名称");
  189.         cell4.setCellStyle(style);
  190.         cell4 = row4.createCell();
  191.         cell4.setCellValue("回空品名称");
  192.         cell4.setCellStyle(style);
  193.         cell4 = row4.createCell();
  194.         cell4.setCellValue("费用区分");
  195.         cell4.setCellStyle(style);
  196.         cell4 = row4.createCell();
  197.         cell4.setCellValue("费项");
  198.         cell4.setCellStyle(style);
  199.         cell4 = row4.createCell();
  200.         cell4.setCellValue("金额");
  201.         cell4.setCellStyle(style);
  202.         cell4 = row4.createCell();
  203.         cell4.setCellValue("收货单号");
  204.         cell4.setCellStyle(style);
  205.         cell4 = row4.createCell();
  206.         cell4.setCellValue("客户");
  207.         cell4.setCellStyle(style);
  208.         cell4 = row4.createCell();
  209.         cell4.setCellValue("结算对象");
  210.         cell4.setCellStyle(style);
  211.         cell4 = row4.createCell();
  212.         cell4.setCellValue("销售单号");
  213.         cell4.setCellStyle(style);
  214.         cell4 = row4.createCell();
  215.         cell4.setCellValue("回空件数");
  216.         cell4.setCellStyle(style);
  217.         cell4 = row4.createCell();
  218.         cell4.setCellValue("送货单号");
  219.         cell4.setCellStyle(style);
  220.  
  221.         List dealerBackDeliverFee = SF.JYDEALER_SERVICE.dealerBackDeliverFee(form);
  222.         for (int i = ; i < dealerBackDeliverFee.size(); i++) {
  223.             HSSFRow row1 = sheet4.createRow(i+);
  224.             Map<String, Object> map = (Map<String,Object>)dealerBackDeliverFee.get(i);
  225.             row1.createCell().setCellValue((map.get("confirm_date") != null ? map.get("confirm_date") : "").toString());
  226.             row1.createCell().setCellValue((map.get("name") != null ? map.get("name") : "").toString());
  227.             row1.createCell().setCellValue((map.get("item_name") != null ? map.get("item_name") : "").toString());
  228.             row1.createCell().setCellValue((map.get("fee_type_name") != null ? map.get("fee_type_name") : "").toString());
  229.             row1.createCell().setCellValue((map.get("calculate_subject") != null ? map.get("calculate_subject") : "").toString());
  230.             row1.createCell().setCellValue((map.get("detail_amount") != null ? map.get("detail_amount") : "").toString());
  231.             row1.createCell().setCellValue((map.get("source_order_no") != null ? map.get("source_order_no") : "").toString());
  232.             row1.createCell().setCellValue((map.get("customer_name") != null ? map.get("customer_name") : "").toString());
  233.             row1.createCell().setCellValue((map.get("source_type_name") != null ? map.get("source_type_name") : "").toString());
  234.             row1.createCell().setCellValue((map.get("sales_no") != null ? map.get("sales_no") : "").toString());
  235.             row1.createCell().setCellValue((map.get("receipt_box") != null ? map.get("receipt_box") : "").toString());
  236.             row1.createCell().setCellValue((map.get("deliver_no") != null ? map.get("deliver_no") : "").toString());
  237.         }
  238.  
  239.         //退货配送费
  240.         HSSFSheet sheet5 = wb.createSheet("退货配送费明细");
  241.         sheet5.setDefaultRowHeight((short) ( * ));
  242.         HSSFRow row5 = sheet5.createRow((int) );
  243.         sheet5.createRow((int) );
  244.         sheet5.createRow((int) );
  245.         HSSFCell cell5 = row5.createCell();
  246.         cell5.setCellValue("日期");
  247.         cell5.setCellStyle(style);
  248.         cell5 = row5.createCell();
  249.         cell5.setCellValue("公司名称");
  250.         cell5.setCellStyle(style);
  251.         cell5 = row5.createCell();
  252.         cell5.setCellValue("商品名称");
  253.         cell5.setCellStyle(style);
  254.         cell5 = row5.createCell();
  255.         cell5.setCellValue("费用区分");
  256.         cell5.setCellStyle(style);
  257.         cell5 = row5.createCell();
  258.         cell5.setCellValue("费项");
  259.         cell5.setCellStyle(style);
  260.         cell5 = row5.createCell();
  261.         cell5.setCellValue("金额");
  262.         cell5.setCellStyle(style);
  263.         cell5 = row5.createCell();
  264.         cell5.setCellValue("收货单号");
  265.         cell5.setCellStyle(style);
  266.         cell5 = row5.createCell();
  267.         cell5.setCellValue("客户");
  268.         cell5.setCellStyle(style);
  269.         cell5 = row5.createCell();
  270.         cell5.setCellValue("结算对象");
  271.         cell5.setCellStyle(style);
  272.         cell5 = row5.createCell();
  273.         cell5.setCellValue("销售单号");
  274.         cell5.setCellStyle(style);
  275.         cell5 = row5.createCell();
  276.         cell5.setCellValue("退货件数");
  277.         cell5.setCellStyle(style);
  278.         cell5 = row5.createCell();
  279.         cell5.setCellValue("总重量");
  280.         cell5.setCellStyle(style);
  281.         cell5 = row5.createCell();
  282.         cell5.setCellValue("送货单号");
  283.         cell5.setCellStyle(style);
  284.  
  285.         List dealerReturnDeliverFee = SF.JYDEALER_SERVICE.dealerReturnDeliverFee(form);
  286.         for (int i = ; i < dealerReturnDeliverFee.size(); i++) {
  287.             HSSFRow row1 = sheet5.createRow(i+);
  288.             Map<String, Object> map = (Map<String,Object>)dealerReturnDeliverFee.get(i);
  289.             row1.createCell().setCellValue((map.get("confirm_date") != null ? map.get("confirm_date") : "").toString());
  290.             row1.createCell().setCellValue((map.get("name") != null ? map.get("name") : "").toString());
  291.             row1.createCell().setCellValue((map.get("packing_name") != null ? map.get("packing_name") : "").toString());
  292.             row1.createCell().setCellValue((map.get("fee_type_name") != null ? map.get("fee_type_name") : "").toString());
  293.             row1.createCell().setCellValue((map.get("calculate_subject") != null ? map.get("calculate_subject") : "").toString());
  294.             row1.createCell().setCellValue((map.get("detail_amount") != null ? map.get("detail_amount") : "").toString());
  295.             row1.createCell().setCellValue((map.get("source_order_no") != null ? map.get("source_order_no") : "").toString());
  296.             row1.createCell().setCellValue((map.get("customer_name") != null ? map.get("customer_name") : "").toString());
  297.             row1.createCell().setCellValue((map.get("source_type_name") != null ? map.get("source_type_name") : "").toString());
  298.             row1.createCell().setCellValue((map.get("sales_no") != null ? map.get("sales_no") : "").toString());
  299.             row1.createCell().setCellValue((map.get("receipt_box") != null ? map.get("receipt_box") : "").toString());
  300.             row1.createCell().setCellValue((map.get("detail_weight") != null ? map.get("detail_weight") : "").toString());
  301.             row1.createCell().setCellValue((map.get("deliver_no") != null ? map.get("deliver_no") : "").toString());
  302.         }
  303.  
  304.         //入出库费
  305.         HSSFSheet sheet6 = wb.createSheet("入出库费明细");
  306.         sheet6.setDefaultRowHeight((short) ( * ));
  307.         HSSFRow row6 = sheet6.createRow((int) );
  308.         sheet6.createRow((int) );
  309.         sheet6.createRow((int) );
  310.         HSSFCell cell6 = row6.createCell();
  311.         cell6.setCellValue("日期");
  312.         cell6.setCellStyle(style);
  313.         cell6 = row6.createCell();
  314.         cell6.setCellValue("公司名称");
  315.         cell6.setCellStyle(style);
  316.         cell6 = row6.createCell();
  317.         cell6.setCellValue("费用区分");
  318.         cell6.setCellStyle(style);
  319.         cell6 = row6.createCell();
  320.         cell6.setCellValue("费项");
  321.         cell6.setCellStyle(style);
  322.         cell6 = row6.createCell();
  323.         cell6.setCellValue("结算对象");
  324.         cell6.setCellStyle(style);
  325.         cell6 = row6.createCell();
  326.         cell6.setCellValue("收货单号");
  327.         cell6.setCellStyle(style);
  328.         cell6 = row6.createCell();
  329.         cell6.setCellValue("对应商品");
  330.         cell6.setCellStyle(style);
  331.         cell6 = row6.createCell();
  332.         cell6.setCellValue("件数");
  333.         cell6.setCellStyle(style);
  334.         cell6 = row6.createCell();
  335.         cell6.setCellValue("计算重量");
  336.         cell6.setCellStyle(style);
  337.         cell6 = row6.createCell();
  338.         cell6.setCellValue("费用");
  339.         cell6.setCellStyle(style);
  340.         cell6 = row6.createCell();
  341.         cell6.setCellValue("入库类型");
  342.         cell6.setCellStyle(style);
  343.  
  344.         List dealerInoutFee = SF.JYDEALER_SERVICE.dealerInoutFee(form);
  345.         for (int i = ; i < dealerInoutFee.size(); i++) {
  346.             HSSFRow row1 = sheet6.createRow(i+);
  347.             Map<String, Object> map = (Map<String,Object>)dealerInoutFee.get(i);
  348.             row1.createCell().setCellValue((map.get("confirm_date") != null ? map.get("confirm_date") : "").toString());
  349.             row1.createCell().setCellValue((map.get("name") != null ? map.get("name") : "").toString());
  350.             row1.createCell().setCellValue((map.get("fee_type_name") != null ? map.get("fee_type_name") : "").toString());
  351.             row1.createCell().setCellValue((map.get("calculate_subject") != null ? map.get("calculate_subject") : "").toString());
  352.             row1.createCell().setCellValue((map.get("source_type_name") != null ? map.get("source_type_name") : "").toString());
  353.             row1.createCell().setCellValue((map.get("source_order_no") != null ? map.get("source_order_no") : "").toString());
  354.             row1.createCell().setCellValue((map.get("packing_name") != null ? map.get("packing_name") : "").toString());
  355.             row1.createCell().setCellValue((map.get("receipt_box") != null ? map.get("receipt_box") : "").toString());
  356.             row1.createCell().setCellValue((map.get("detail_weight") != null ? map.get("detail_weight") : "").toString());
  357.             row1.createCell().setCellValue((map.get("detail_amount") != null ? map.get("detail_amount") : "").toString());
  358.             row1.createCell().setCellValue((map.get("receipt_type") != null ? map.get("receipt_type") : "").toString());
  359.         }
  360.         try {
  361.             OutputStream out = response.getOutputStream();
  362.             wb.write(out);
  363.             out.flush();
  364.             out.close();
  365.         } catch (ServiceException e) {
  366.             logger.info("ServiceException=====导出excel异常====" + e);
  367.         } catch (Exception e1) {
  368.             logger.info("Exception=====导出excel异常====" + e1);
  369.         }
  370.     }

就是excel出来一行合并行 xxx年xx月xx日下面是内容

  1. HSSFRow rowA = sheet.createRow((int) );
  2. sheet.createRow((int) );
  3. sheet.createRow((int) );
  4. sheet.createRow((int) );
  5. sheet.createRow((int) );
  6. sheet.createRow((int) );
  7. sheet.createRow((int) );
  8. sheet.createRow((int) );
  9. HSSFCellStyle style = wb.createCellStyle();
  10. style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
  11.  
  12. HSSFCell cell = rowA.createCell();
  13. cell.setCellValue("库存:"+form.getBeginDate()+"起至"+form.getEndDate()+"");
  14. cell.setCellStyle(style);
  15. cell = rowA.createCell();
  16. cell.setCellValue("");
  17. cell.setCellStyle(style);
  18. cell = rowA.createCell();
  19. cell.setCellValue("");
  20. cell.setCellStyle(style);
  21. cell = rowA.createCell();
  22. cell.setCellValue("");
  23. cell.setCellStyle(style);
  24. cell = rowA.createCell();
  25. cell.setCellValue("");
  26. cell.setCellStyle(style);
  27. cell = rowA.createCell();
  28. cell.setCellValue("");
  29. cell.setCellStyle(style);
  30. cell = rowA.createCell();
  31. cell.setCellValue("");
  32. cell.setCellStyle(style);
  33. cell = rowA.createCell();
  34. cell.setCellValue("");
  35. cell.setCellStyle(style);
  36.  
  37. // 合并单元格
  38. CellRangeAddress cra =new CellRangeAddress(, , , ); // 起始行, 终止行, 起始列, 终止列
  39. sheet.addMergedRegion(cra);

合并单元格后居中

  1.  style = wb.createCellStyle();
  2. style.setAlignment(XSSFCellStyle.ALIGN_CENTER);
 

(后端)如何将数据库的表导出生成Excel？的更多相关文章

  1. 从数据库的表导出到Excel表格中【让客户端下载的Excel】

    原文发布时间为:2008-10-11 -- 来源于本人的百度文章 [由搬家工具导入] 这个例子是从gridview中导出到Excel，可以举一反三，可以直接从数据库中取值放在DataSet中，然后再从 ...

  2. 数据库多张表导出到excel

    数据库多张表导出到excel public static void export() throws Exception{ //声明需要导出的数据库 String dbName = "hdcl ...

  3. 将Mysql的一张表导出至Excel格式文件

    将Mysql的一张表导出至Excel格式文件 导出语句 进入mysql数据库,输入如下sql语句: select id, name, age from tablename into outfile ' ...

  4. Json数据导出生成Excel

    最近在做一个导入导出Excel的功能,导出其他类型的文件都比较熟悉,但是导入跟导出一个Excel还是稍微特殊点.根据这次的经验,写了个导出的小样例. 总体思路就是json数据的key,value跟Ex ...

  5. Asp.Net Core 导入Excel数据到Sqlite数据库并重新导出到Excel

    Asp.Net Core 导入Excel数据到Sqlite数据库并重新导出到Excel 在博文"在Asp.Net Core 使用 Sqlite 数据库"中创建了ASP.NET Co ...

  6. Python实战 :2017国考职业表excel转数据库，再查询生成excel

    最近看2017年国考的职业表,多而杂,不好过滤我想要的信息,特此把它转成Sqlite3数据库,再从数据库里把查询结果导出成excel,方便找职业. (后附上整套代码) 环境:python2.7   x ...

  7. WPF根据Oracle数据库的表，生成CS文件小工具

    开发小工具的原因: 1.我们公司的开发是客户端用C#,服务端用Java,前后台在通讯交互的时候,会用到Oracle数据库的字段,因为服务器端有公司总经理开发的一个根据Oracle数据库的表生成的cla ...

  8. JAVA利用JXL导出/生成 EXCEL

    /** * 导出导出采暖市场部收入.成本.利润明细表 * @author JIA-G-Y */ public String exporExcel(String str) { String str=Se ...

  9. JAVA实现数据库数据导入/导出到Excel（POI）

    准备工作: 1.导入POI包:POI下载地址http://mirrors.tuna.tsinghua.edu.cn/apache/poi/release/src/(重要) 如下 2.导入Java界面美 ...

随机推荐

  1. zuul熔断代码

    package com.sun.fallback; import java.io.ByteArrayInputStream; import java.io.IOException; import ja ...

  2. Source Insight函数调用关系显示设置

    当我们需要设置source Insight的项目代码中函数调用关系时,可通过如下的设置来实现: 1.显示函数调用关系窗口 Source Insight工具栏中“View”—>“Relation  ...

  3. Tools - 一些代码阅读的方法

    1 初始能力 让阅读思路清晰连贯,保持在程序的流程架构和逻辑实现上,不被语法.编程技巧和业务流程等频繁地阻碍和打断. 语言基础:熟悉基础语法,常用的函数.库.编程技巧等: 了解设计模式.构建工具.代码 ...

  4. win10 + cuda8.0 + caffe SSD + vs2015 + python3

    一.下载 git clone https://github.com/runhang/caffe-ssd.git cd caffe-ssd 1. 修改 build_win.cmd if !PYTHON_ ...

  5. 服务器运维 -- windows系统更换System32下文件后 重启无法进入桌面

    场景描述: windows系统更换System32下文件后 重启无法进入桌面 情况1,原替换文件有备份     解决建议: 准备好该文件 情况2,原备份文件没有备份  解决建议:从相同版本的服务器上边 ...

  6. redis内部分享ppt

    作者:青客宝团队 Redis:最好的缓存数据库 说Redis是缓存服务,估计有些人会不开心,因为Redis也可以把数据库持久化,但是在大多数情况Redis的竞争力是提供缓存服务.说到缓存服务必然会想到 ...

  7. Unity 多人网络连接

    NetWorkServer.cs using UnityEngine; using System.Collections; public class NetWorkServer : MonoBehav ...

  8. Python 虚拟环境 | Mac/Linux下如何避坑安装配置Virtualenv

    1.为什么要使用虚拟环境 在Python中,不同的应用可能需要用到不同版本的第三方包,而这些第三方包被统一存放到目录site-packages中,不同版本的包容易相互覆盖,如安装Django 2.1时 ...

  9. 复刻smartbits的国产网络测试工具minismb简介

           复刻smartbits的国产网络性能测试工具minismb,是一款专门用于测试智能路由器,网络交换机的性能和稳定性的软硬件相结合的工具.可以通过此工具测试任何ip网络设备的端口吞吐率,带 ...

  10. Eclipse Gradle 构建多模块项目

    注意: 1.Eclipse不如IDEA智能,Eclipse建立的Gradle Project项目在目录级别上是同级的; 2.user-web模块如果要引用user-service模块,直接引用是找不到 ...