POI自动filter
如何使用Apache POI预先定义Excel 2007文档中的自动筛选区域？
一个小的代码示例或链接将是很好的。
保存过滤区域的第一个和最后一个单元格，然后执行：
sheet.setAutoFilter(new CellRangeAddress(firstCell.getRow(), lastCell.getRow(), firstCell.getCol(), lastCell.getCol())); 例如，从下面的表格。
>x (x, y) 0123456 0|--hhh--| h = header 1|--+++--| + = values 2|--+++--| - = empty fields 3|--+++--| 4|-------|
第一个单元格将成为第一个+ （2,1）单元格上方的标题。 最后一个将是最后一个+ cell（5,3）
//include poi-3.7.jar,ojdbc.jar in classpath import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.ResultSetMetaData; import java.sql.Statement; import java.io.*; import java.net.*; import javax.servlet.*; import javax.servlet.http.*; import org.apache.poi.hssf.usermodel.*; import org.apache.poi.hssf.util.HSSFColor; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.CellStyle; import org.apache.poi.ss.usermodel.IndexedColors; public class ExcelCreator{ public static void createExcel(String anySql,OutputStream out) throws Exception{ Connection conn=getOracleConnection(); String userSql1="select * from tab"; String userSql2="select * from tab"; String[] sqls={userSql1,userSql2,anySql}; String[] workSheetNames={"User","Manager","Any"}; HSSFWorkbook wb = new HSSFWorkbook(); CellStyle style1 = wb.createCellStyle(); CellStyle style2 = wb.createCellStyle(); for(int i=0;i<lt;sqls.length;i++){ if(sqls[i]==null||sqls[i].length()==0){ continue; } HSSFSheet sheet = wb.createSheet(workSheetNames[i]); Statement st = conn.createStatement(); System.out.println("--------------------------"); System.out.println(sqls[i]); ResultSet rs = st.executeQuery(sqls[i]); ResultSetMetaData rsMetaData = rs.getMetaData(); int numberOfColumns = rsMetaData.getColumnCount(); int rowCounter=0; HSSFRow rowHeader = sheet.createRow(rowCounter); for(int columnCounter=0; columnCounter<lt;numberOfColumns;columnCounter++){ rowHeader.createCell(columnCounter).setCellValue(rsMetaData.getColumnName(columnCounter+1)); setFilledColorStyle(rowHeader.getCell(columnCounter),style2); } sheet.setAutoFilter(org.apache.poi.ss.util.CellRangeAddress.valueOf("A1:"+ (Character.toString((char)( 65+numberOfColumns-1)))+"1")); rowCounter++; while(rs.next()) { // Create a row and put some cells in it. Rows are 0 based. HSSFRow row = sheet.createRow(rowCounter); for(int columnCounter=0; columnCounter<lt;numberOfColumns;columnCounter++){ row.createCell(columnCounter).setCellValue(rs.getString(columnCounter+1)); setThinBorderStyle(row.getCell(columnCounter),style1); } rowCounter++; } rs.close(); st.close(); } // Write the output wb.write(out); out.close(); conn.close(); System.out.println("Created Successfully"); } public static void main(String[] args) throws Exception{ OutputStream out = new FileOutputStream("c:/admin.xls"); createExcel(" select * from tab", out); } public static Connection getOracleConnection() throws Exception { String driver = "oracle.jdbc.driver.OracleDriver"; String url = "jdbc:oracle:thin:@localhost:XE"; String username = "system"; String password = "password"; Class.forName(driver); // load Oracle driver Connection conn = DriverManager.getConnection(url, username, password); return conn; } //This method set the thin border style private static void setThinBorderStyle(Cell cell, CellStyle style) { style.setBorderBottom(CellStyle.BORDER_THIN); style.setBottomBorderColor(IndexedColors.RED.getIndex()); style.setBorderLeft(CellStyle.BORDER_THIN); style.setLeftBorderColor(IndexedColors.RED.getIndex()); style.setBorderRight(CellStyle.BORDER_THIN); style.setRightBorderColor(IndexedColors.RED.getIndex()); style.setBorderTop(CellStyle.BORDER_THIN); style.setTopBorderColor(IndexedColors.RED.getIndex()); cell.setCellStyle(style); } //This method set the dashed border style private static void setDashedBorderStyle(Cell cell, CellStyle style) { style.setBorderBottom(CellStyle.BORDER_DASHED); style.setBottomBorderColor(IndexedColors.GREEN.getIndex()); style.setBorderLeft(CellStyle.BORDER_DASHED); style.setLeftBorderColor(IndexedColors.GREEN.getIndex()); style.setBorderRight(CellStyle.BORDER_DASHED); style.setRightBorderColor(IndexedColors.GREEN.getIndex()); style.setBorderTop(CellStyle.BORDER_DASHED); style.setTopBorderColor(IndexedColors.GREEN.getIndex()); cell.setCellStyle(style); } // This method set the dotted border style private static void setFilledColorStyle(Cell cell, CellStyle style) { // style.setFillBackgroundColor(new HSSFColor.YELLOW().getIndex()); style.setFillForegroundColor(IndexedColors.ORANGE.getIndex()); style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND ); // style.setBorderLeft(CellStyle.BORDER_DOTTED); // style.setLeftBorderColor(IndexedColors.BLUE.getIndex()); // style.setBorderRight(CellStyle.BORDER_DOTTED); // style.setRightBorderColor(IndexedColors.BLUE.getIndex()); // style.setBorderTop(CellStyle.BORDER_DOTTED); // style.setTopBorderColor(IndexedColors.BLUE.getIndex()); cell.setCellStyle(style); } }
sets Auto filter sheet.setAutoFilter(CellRangeAddress.valueOf("A1:N1"));
我发现很难得到CellRange，因为我的列和行的值都是可变的。 所以我使用了这个技巧。
初始化一个lastCellReferencevariables为A1，它是row1，column1单元格
String lastCellReference = "A1";
每次你创build一个单元格更新lastCellReference来维护最新的值
cell = row.createCell((short) columnCount); cell.setCellValue(rs.getInt(i)); lastCellReference=cell.getReference();
A1将始终是第一个单元格，然后是lastCellReference
sheet1.setAutoFilter(CellRangeAddress.valueOf("A1:"+ lastCellReference));
自从apache POI的3.7-beta3-20100811版本以后，这个function就变得可用了