java – 使用Apache POI将ResultSet转换为Excel(* .xlsx)表

我正在尝试使用Apache Poi将ResultSet写入Excel(* .xlsx)表.

Office Excel中的表对象错误无效

但是,即使它写入Excel文件没有任何错误,当我尝试在Office Excel 2013中打开它时,它会显示错误并删除表对象以仅提供纯数据视图.

public static void writeExcel(ResultSet rs,int sqliteRowCount,String dir) {
    System.out.println("Writing Excel(*.xlsx) File...");
    XSSFWorkbook workbook = null;
    try {
        if (rs != null) {
            // Get ResultSet MetaData
            ResultSetMetaData rsmd = rs.getMetaData();
            // Number of columns
            int numColumns = rsmd.getColumnCount();
            // Number of rows
            // + 1 for headers
            int numRows = sqliteRowCount + 1;
            workbook = new XSSFWorkbook();
 
            // Create Excel Table
            XSSFSheet sheet = workbook.createSheet("Text");
            XSSFTable table = sheet.createTable();
            table.setDisplayName("Test");
            CTTable cttable;
            cttable = table.getCTTable();
 
            // Style configurations
            CTTableStyleInfo style = cttable.addNewTableStyleInfo();
            style.setName("TableStyleMedium16");
            style.setShowColumnStripes(false);
            style.setShowRowStripes(true);
 
            // Set Table Span Area
            AreaReference reference = new AreaReference(new CellReference(0,0),new CellReference(numRows - 1,numColumns - 1));
            cttable.setRef(reference.formatAsString());
            cttable.setId(1);
            cttable.setName("Test");
            cttable.setDisplayName("Test");
            cttable.setTotalsRowCount(numRows);
            cttable.setTotalsRowShown(false);
 
            // Create Columns
            CTTableColumns columns = cttable.addNewTableColumns();
            columns.setCount(numColumns);
 
            // Create Column,Row,Cell Objects
            CTTableColumn column;
            XSSFRow row;
 
            // Add Header and Columns
            XSSFRow headerRow = sheet.createRow(0);
            for (int i = 0; i < numColumns; i++) {
                column = columns.addNewTableColumn();
                column.setName("Column" + (i + 1));
                column.setId(i + 1);
                headerRow.createCell(i).setCellValue(rsmd.getColumnLabel(i + 1));
            }
 
            // Write each row from ResultSet
            int rowNumber = 1;
            while (rs.next()) {
                row = sheet.createRow(rowNumber);
                for (int y = 0; y < numColumns; y++) {
                    row.createCell(y).setCellValue(rs.getString(y + 1));
                }
                rowNumber++;
            }
 
            // Set AutoFilter
            CTAutoFilter fltr = CTAutoFilter.Factory.newInstance();
            fltr.setRef((new AreaReference(new CellReference(0,numColumns - 1))).formatAsString());
            cttable.setAutoFilter(fltr);
            // sheet.setAutoFilter(CellRangeAddress.valueOf((new AreaReference(new CellReference(0,numColumns - 1))).formatAsString()));
            // Freeze Pan
            sheet.createFreezePane(0,1,2);
        }
    } catch (sqlException ex) {
        System.out.println("sql Error while writing Excel file!");
    } finally {
        try {
        // Let's write the excel file now
            if (workbook != null) {
                String excelDir = dir + File.separator + "workbook.xlsx";
                try (final FileOutputStream out = new FileOutputStream(excelDir)) {
                    workbook.write(out);
                }
            }
        } catch (IOException ex) {
            System.out.println("IO Error while writing Excel summary file!");
        }
    }
}

我知道我的代码有问题,但无法弄明白.
任何想法,为什么会发生这种情况,我的代码中可能存在错误.

更新1：

如果使用Apache POI创建,则在Excel存档中使用表格XML文件

<?xml version="1.0" encoding="UTF-8"?>
<table displayName="Test" ref="A1:B881" id="1" name="Test" totalsRowCount="881" xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" totalsRowShown="0"><autoFilter ref="A1:B881"/><tableColumns count="2"><tableColumn name="ID" id="1"/><tableColumn name="Name" id="2"/><tableStyleInfo name="TableStyleMedium2" showColumnStripes="true" showRowStripes="true"/></table>

如果手动创建表,则在Excel归档中使用表格XML文件

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<table xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" id="1" name="Table1" displayName="Table1" ref="A1:B881" totalsRowShown="0"><autoFilter ref="A1:B881"/><tableColumns count="2"><tableColumn id="1" name="ID"/><tableColumn id="2" name="Name"/></tableColumns><tableStyleInfo name="TableStyleLight9" showFirstColumn="0" showLastColumn="0" showRowStripes="1" showColumnStripes="0"/></table>

此外,如果我打开Excel存档,它在Apache POI创建的主题文件夹中没有主题文件夹,但它存在于Office Excel中手动创建的主题文件夹中.奇怪.

更新2：
示例可执行代码(使用Netbeans)：

/*
 * To change this license header,choose License Headers in Project Properties.
 * To change this template file,choose Tools | Templates
 * and open the template in the editor.
 */
 
package apachepoi_exceltest;
 
    import java.io.File;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.util.HashMap;
    import java.util.Map;
    import org.apache.poi.ss.util.AreaReference;
    import org.apache.poi.ss.util.CellRangeAddress;
    import org.apache.poi.ss.util.CellReference;
    import org.apache.poi.xssf.usermodel.XSSFRow;
    import org.apache.poi.xssf.usermodel.XSSFSheet;
    import org.apache.poi.xssf.usermodel.XSSFTable;
    import org.apache.poi.xssf.usermodel.XSSFWorkbook;
    import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTTable;
    import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTTableColumn;
    import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTTableColumns;
    import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTTableStyleInfo;
 
    /**
     *
     */
    public class ApachePOI_ExcelTest {
 
        /**
         * @param args the command line arguments
         */
        public static void main(String[] args) {
 
            String outputDir = "Your Local Directory Here";
 
            // TODO code application logic here
            HashMap<String,String> dataMap = new HashMap<>();
 
            dataMap.put("ID 1","Dummy Name 1");
            dataMap.put("ID 2","Dummy Name 2");
            dataMap.put("ID 3","Dummy Name 3");
            dataMap.put("ID 4","Dummy Name 4");
 
            writeExcel(dataMap,outputDir);
 
        }
 
        private static void writeExcel(HashMap<String,String> dataMap,String outputDir) {
            System.out.println("Writing Excel(*.xlsx) Summary File...");
            XSSFWorkbook workbook = null;
            try {
 
                // Number of columns
                int numColumns = 2; // ID and Name
                // Number of rows
                int numRows = dataMap.size() + 1; // +1 for header
 
                // Create Workbook
                workbook = new XSSFWorkbook();
 
                // Create Excel Table
                XSSFSheet sheet = workbook.createSheet("Summary");
                XSSFTable table = sheet.createTable();
                table.setDisplayName("Test");
                CTTable cttable;
                cttable = table.getCTTable();
 
                // Style configurations
                CTTableStyleInfo style = cttable.addNewTableStyleInfo();
                style.setName("TableStyleMedium16");
                style.setShowColumnStripes(false);
                style.setShowRowStripes(true);
 
                // Set Tabel Span Area
                AreaReference reference = new AreaReference(new CellReference(0,numColumns - 1));
                cttable.setRef(reference.formatAsString());
                cttable.setId(1);
                cttable.setName("Test");
                cttable.setDisplayName("Test");
                cttable.setTotalsRowCount(numRows);
                cttable.setTotalsRowShown(false);
 
                // Create Columns
                CTTableColumns columns = cttable.addNewTableColumns();
                columns.setCount(numColumns);
 
                // Create Column,Cell Objects
                CTTableColumn column;
                XSSFRow row;
 
                // Add ID Header
                column = columns.addNewTableColumn();
                column.setName("Column" + (1));
                column.setId(1);
 
                // Add Name Header
                column = columns.addNewTableColumn();
                column.setName("Column" + (1));
                column.setId(1);
 
                // Add Header Row
                XSSFRow headerRow = sheet.createRow(0);
                headerRow.createCell(0).setCellValue("ID");
                headerRow.createCell(1).setCellValue("Name");
 
                int rowNumber = 1;
                for (Map.Entry<String,String> entry : dataMap.entrySet()) {
                    String id = entry.getKey();
                    String name = entry.getValue();
                    row = sheet.createRow(rowNumber);
                    row.createCell(0).setCellValue(id);
                    row.createCell(1).setCellValue(name);
                    rowNumber++;
                }
 
                // Set Filter (Below three lines code somehow not working in this example,so setting AutoFilter to WorkSheet)
    //             CTAutoFilter fltr = CTAutoFilter.Factory.newInstance();
    //             fltr.setRef((new AreaReference(new CellReference(0,numColumns - 1))).formatAsString());
    //             cttable.setAutoFilter(fltr);
                sheet.setAutoFilter(CellRangeAddress.valueOf((new AreaReference(new CellReference(0,numColumns - 1))).formatAsString()));
 
                // Freeze First Row as header Row
                sheet.createFreezePane(0,2);
 
            } catch (Exception ex) {
                System.out.println("Error while writing Excel summary file!");
            } finally {
                try {
                    // Lets write the Excel File Now
                    if (workbook != null) {
                        String excelDir = outputDir + File.separator + "workbook.xlsx";
                        try (final FileOutputStream out = new FileOutputStream(excelDir)) {
                            workbook.write(out);
                        }
                    }
                } catch (IOException ex) {
                    System.out.println("IO Error while writing Excel summary file!");
                }
            }
        }
 
    }

使用的库：

OOXML-模式-1.1.jar

POI-3.11-beta2-20140822.jar

POI-OOXML-3.11-beta2-20140822.jar

XMLBeans的-2.6.0.jar

解决方法

你的代码出了什么问题就是存在一行. “cttable.setTotalsRowCount(numRows行);” 删除它,一切都会工作. 如果有疑问,请比较在Excel中手动创建的某些工作表的XML定义以及使用Apache POI创建的定义

java – 使用Apache POI将ResultSet转换为Excel(* .xlsx)表

解决方法

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