需要写结果在Xls

Question

我需要在xls文件或csv文件中编写测试用例名称和结果。我已经使用了现有的文件并将结果写入现有的文件中，它返回NULL指针异常，行* cell = row.getCell（0）; *

下面给出我的代码..

package com.testCases; 

import java.io.IOException; 
import java.util.ArrayList; 
import java.util.HashMap; 

import com.test.utility.PrintResultinExcel; 
import com.test.utility.ReadExcelSheet; 
import com.test.utility.clearText; 
import com.test.utility.clickEvent; 
import com.test.utility.globalVariables; 
import com.test.utility.selectCheckbox; 
import com.test.utility.text; 
import com.test.utility.verifyText; 
import com.test.utility.writeExcel; 

public class SQLInject extends globalVariables{ 
    public static void sqlinjection() throws InterruptedException, IOException{ 
     ArrayList<HashMap> data = ReadExcelSheet.readExcel("Sheet1"); 
     int size = data.size();  
     System.out.println("Total Number of Keywords: "+size);  
     for(int i=0;i<=size-1;i++){ 
     clickEvent.clickAt("allcustomers_linkText"); 
     Thread.sleep(2000); 
     clickEvent.clickAt("sqlquery_xpath");  
     Thread.sleep(2000); 
     String keyword = data.get(i).get("Keywords").toString(); 
     text.enterText("sql_id", keyword); 
     clickEvent.clickAt("sqlsearchbutton_id"); 
     verifyText.verify("SQL statement does NOT contain valid keywords."); 
     String result="PASS"; 
     PrintResultinExcel.excelLog(keyword, result, i); 
     } 
    } 

} 

实用程序文件：

package com.test.utility; 

import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileNotFoundException; 
import java.io.FileOutputStream; 
import java.io.IOException; 

import org.apache.poi.hssf.usermodel.HSSFCell; 
import org.apache.poi.hssf.usermodel.HSSFRow; 
import org.apache.poi.hssf.usermodel.HSSFSheet; 
import org.apache.poi.hssf.usermodel.HSSFWorkbook; 
import org.apache.poi.ss.usermodel.Cell; 

public class PrintResultinExcel extends globalVariables { 


    public static void excelLog(String keyword, String result, int rowNum) { 
     try { 
      FileInputStream file = new FileInputStream(new File("D:\\testexcel.xls")); 

      HSSFWorkbook workbook = new HSSFWorkbook(file); 
      HSSFSheet sheet = workbook.getSheetAt(0); 
      // Find empty cell 
      HSSFRow row = sheet.getRow(rowNum); 
      Cell cell = null; 
      cell=row.getCell(0); 
      cell.setCellValue(keyword); 
      cell=row.getCell(1); 
      cell.setCellValue(result); 
      // Update the value of cell 

      file.close(); 

      FileOutputStream outFile = new FileOutputStream(new File("D:\\testexcel.xls")); 
      workbook.write(outFile); 
      outFile.close(); 

     } catch (FileNotFoundException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

    } 

    } 

Answer 1

这是工作正常，我来更新现有薄片。

public class writeExcel extends globalVariables { 
     public static void write(int row, int column, String result) throws InvalidFormatException { 


      try { 
       InputStream inp = new FileInputStream("/SQLInjection.xlsx"); 
       org.apache.poi.ss.usermodel.Workbook wb = WorkbookFactory.create(inp); 
       Sheet sheet = wb.getSheet("Results"); 
       // Sheet sheet = wb.getSheet(0); 
       Row sheetRow = sheet.getRow(row); 
       Cell cell = sheetRow.getCell(column); 
       if (cell == null) { 
        cell = sheetRow.createCell(column); 
        cell.setCellType(Cell.CELL_TYPE_STRING); 
       } 
       cell.setCellType(Cell.CELL_TYPE_STRING); 
       cell.setCellValue(result); 
       FileOutputStream fileOut = new FileOutputStream("/SQLInjection.xlsx"); 
       wb.write(fileOut); 
       fileOut.close(); 
       // System.out.println("Results updated in Excel Sheet"); 

      } catch (IOException ex) { 

      } 
     } 
    /* public static void main(String[] args) throws BiffException, IOException, InvalidFormatException { 
      for (int i = 1;i <= 10;i++) { 
       //excelLog("Exec" + i, "PASS" + i, i); 
       System.out.println("Test"); 
       write(i,1,"Test", "PASS"); 
      } 
     }*/ 
    } 

Answer 2

的数据添加到WorkBook，并保持它在内存中。数据添加完成后，将其写入文件。

示例代码

package com.test.utility; 

import java.io.FileOutputStream; 

import org.apache.poi.hssf.usermodel.HSSFCell; 
import org.apache.poi.hssf.usermodel.HSSFRow; 
import org.apache.poi.hssf.usermodel.HSSFSheet; 
import org.apache.poi.hssf.usermodel.HSSFWorkbook; 

public class writeExcel extends globalVariables { 

    private static String dest = "D:\\testexcel.xls"; 
    private static HSSFWorkbook myWorkBook = new HSSFWorkbook(); 
    private static HSSFSheet mySheet = myWorkBook.createSheet(); 

    public static void excelLog(String keyword, String result, int rowNum) { 

     HSSFRow myRow = null; 
     HSSFCell myCell = null; 

     myRow = mySheet.createRow(rowNum); 

     myCell = myRow.createCell(0); 
     myCell.setCellValue(keyword); 
     myCell = myRow.createCell(1); 
     myCell.setCellValue(result); 
    } 

    public static void main(String[] args) { 
     for (int i = 1;i <= 100;i++) { 
      excelLog("Exec" + i, "PASS" + i, i); 
     } 

     try { 
      FileOutputStream out = new FileOutputStream(dest); 
      myWorkBook.write(out); 
      out.close(); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
    } 
} 

编辑：

这可能是可能的，你的文件/工作簿/工作表/行/细胞不存在。所以有必要处理所有的情况。

检查文档HSSFSheet.getRow(int rowNum)。

这里被更新的代码做同样的：

package com.test.utility; 

import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileNotFoundException; 
import java.io.FileOutputStream; 
import java.io.IOException; 

import org.apache.poi.hssf.usermodel.HSSFRow; 
import org.apache.poi.hssf.usermodel.HSSFSheet; 
import org.apache.poi.hssf.usermodel.HSSFWorkbook; 
import org.apache.poi.ss.usermodel.Cell; 


public class writeExcel { 
    public static void main(String[] args) { 
     for (int i = 0; i < 100; i++) { 
      excelLog("Exec" + i, "PASS" + i, i); 
     } 
    } 

    public static void excelLog(String keyword, String result, int rowNum) { 
     String fileName = "testexcel.xls"; 
     try { 
      File f = new File(fileName); 
      HSSFWorkbook workbook = getWorkBook(f); 
      HSSFSheet sheet = getSheet(workbook); 

      HSSFRow row = getRow(sheet, rowNum); 
      // Find empty cell 
      Cell cell = null; 
      cell = getCell(row, 0); 
      cell.setCellValue(keyword); 
      cell = getCell(row, 1); 
      cell.setCellValue(result); 
      // Update the value of cell 

      workbook.close(); 

      FileOutputStream outFile = new FileOutputStream(new File(fileName)); 
      workbook.write(outFile); 
      outFile.close(); 

     } catch (FileNotFoundException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

    } 

    private static Cell getCell(HSSFRow row, int cellNum) { 
     Cell cell = row.getCell(cellNum); 
     if (cell == null) { 
      cell = row.createCell(cellNum); 
     } 
     return cell; 
    } 

    private static HSSFRow getRow(HSSFSheet sheet, int rowNum) { 
     HSSFRow row = sheet.getRow(rowNum); 
     if (row == null) { 
      row = sheet.createRow(rowNum); 
     } 
     return row; 
    } 

    private static HSSFSheet getSheet(HSSFWorkbook workbook) { 
     HSSFSheet sheet = null; 
     try { 
      sheet = workbook.getSheetAt(0); 
     } catch (Exception e) { 
      sheet = workbook.createSheet(); 
     } 
     return sheet; 
    } 

    private static HSSFWorkbook getWorkBook(File f) throws IOException { 
     FileInputStream file = null; 
     HSSFWorkbook workbook = null; 
     if (f.exists()) { 
      file = new FileInputStream(f); 
      workbook = new HSSFWorkbook(file); 
     } else { 
      workbook = new HSSFWorkbook(); 
     } 

     return workbook; 
    } 
}