如何使用 java 比较 2 excel 中的数据

Question

我有 2 个 excel，列数和行数相同。但是行位置不一样。 我只想检查 excel1 中的 row1 是否与 excel1 的第 2 行不匹配，然后转到 excel2 的第 2 行并比较数据。如果 excel2 中的第 2 行再次不匹配，则转到 excel2 的第 3 行。如果找到匹配项，则退出

public static void CompareTwoExcelFiles(String nasPath, String dbVal) {
try {
FileInputStream excellFile1 = new FileInputStream(nasPath);
FileInputStream excellFile2 = new FileInputStream(dbVal);
XSSFWorkbook workbook1 = new XSSFWorkbook(excellFile1);
XSSFWorkbook workbook2 = new XSSFWorkbook(excellFile2);
XSSFSheet sheet1 = workbook1.getSheetAt(0);
XSSFSheet sheet2 = workbook2.getSheetAt(0);
if (compareTwoSheets(sheet1, sheet2)) {
System.out.println("nnThe two excel sheets are Equal");
} else {
System.err.println("nnThe two excel sheets are Not Equal");
}
excellFile1.close();
excellFile2.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private static boolean compareTwoSheets(XSSFSheet sheet1, XSSFSheet sheet2) {
// TODO Auto-generated method stub
int firstRow1 = sheet1.getFirstRowNum();
int lastRow1 = sheet1.getLastRowNum();
boolean equalSheets = true;
for (int i = firstRow1; i <= lastRow1; i++) {
System.out.println("nnComparing Row " + i);
XSSFRow row1 = sheet1.getRow(i);
XSSFRow row2 = sheet2.getRow(i);
if (!compareTwoRows(row1, row2)) {
equalSheets = false;
System.err.println("Row " + i + " - Not Equal");
break;
} else {
System.out.println("Row " + i + " - Equal");
}
}
return equalSheets;
}
private static boolean compareTwoRows(XSSFRow row1, XSSFRow row2) {
// TODO Auto-generated method stub
if ((row1 == null) && (row2 == null)) {
return true;
} else if ((row1 == null) || (row2 == null)) {
return false;
}
int firstCell1 = row1.getFirstCellNum();
int lastCell1 = row1.getLastCellNum();
boolean equalRows = true;
// Compare all cells in a row
for (int i = firstCell1; i <= lastCell1; i++) {
XSSFCell cell1 = row1.getCell(i);
XSSFCell cell2 = row2.getCell(i);
System.out.println(cell1);
System.out.println(cell2);
if (!compareTwoCells(cell1, cell2)) {
equalRows = false;
System.err.println("       Cell " + i + " - NOt Equal");
break;
} else {
System.out.println("       Cell " + i + " - Equal");
}
}
return equalRows;
}
private static boolean compareTwoCells(XSSFCell cell1, XSSFCell cell2) {
if ((cell1 == null) && (cell2 == null)) {
return true;
} else if ((cell1 == null) || (cell2 == null)) {
return false;
}
boolean equalCells = false;
int type1 = cell1.getCellType();
int type2 = cell2.getCellType();
if (type1 == type2) {
if (cell1.getCellStyle().equals(cell2.getCellStyle())) {
// Compare cells based on its type
switch (cell1.getCellType()) {
case HSSFCell.CELL_TYPE_FORMULA:
if (cell1.getCellFormula().equals(cell2.getCellFormula())) {
equalCells = true;
}
break;
case HSSFCell.CELL_TYPE_NUMERIC:
if (cell1.getNumericCellValue() == cell2.getNumericCellValue()) {
equalCells = true;
}
break;
case HSSFCell.CELL_TYPE_STRING:
if (cell1.getStringCellValue().equals(cell2.getStringCellValue())) {
equalCells = true;
}
break;
case HSSFCell.CELL_TYPE_BLANK:
if (cell2.getCellType() == HSSFCell.CELL_TYPE_BLANK) {
equalCells = true;
}
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
if (cell1.getBooleanCellValue() == cell2.getBooleanCellValue()) {
equalCells = true;
}

上面的代码仅检查 row1(excel1(=row1(excel2( 组合，如果数据在 excel1 的第 2 行不可用，即使匹配的数据位于 excel2 的第 2 行，测试也会失败。

请帮忙..

Answer 1

在方法比较 TwoSheets 中，当您比较这 2 张工作表中的 2 行时，这 2 行的索引应该是隔离的。否则，代码只会比较这 2 张工作表的相同索引，即 row1(excel1(<->row1(excel2(，row2(excel1(<->row12(excel2(...

private static boolean compareTwoSheets(XSSFSheet sheet1, XSSFSheet sheet2) {
int firstRow1 = sheet1.getFirstRowNum();
int lastRow1 = sheet1.getLastRowNum();
int firstRow2 = sheet2.getFirstRowNum(), lastRow2 = sheet2.getLastRowNum();
if (lastRow1 - firstRow1 != lastRow2 - firstRow2) {
return false;
}
for (int i = firstRow1; i <= lastRow1; i++) {
for (int j = secondRow1; j <= lastRow1; j++) {
System.out.println("Comparing Row1 " + i + " and Row2 " + j);
XSSFRow row1 = sheet1.getRow(i);
XSSFRow row2 = sheet2.getRow(j);
if (!compareTwoRows(row1, row2)) {
return false;
} else {
System.out.println("Row1 " + i + " and Row2 " + j + " - Equal");
}
}
}
return true;
}

顺便说一下，在此方法中 比较两张表，您应该检查这 2 张纸的 lastRowNum 或总行数是否相等。如果不相等，这两个工作表是完全不同的，因为数据的大小不同。