1、 Maven仓库下载导入
在pom.xml中配置maven路径，指定依赖，如下：
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>4.1.1</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>4.1.1</version>
</dependency>2、读取
2.1 代码
/**
* 读取excel数据 支持xls格式
* @param sheetIndex sheet页下标：从0开始
* @param startReadLine 开始读取的行:从0开始
* @param tailLine 去除最后读取的行
*/
public static List<List<JSONObject>> readMergeExcel(String path, int sheetIndex, int startReadLine, int tailLine) {
List<List<JSONObject>> results = new ArrayList<>();
Workbook wb = null;
try {
wb = WorkbookFactory.create(new File(path));
Sheet sheet = wb.getSheetAt(sheetIndex);
Row row = null;
for (int i = startReadLine; i < sheet.getLastRowNum() - tailLine + 1; i++) {
row = sheet.getRow(i);
if (row == null)
continue;
List<JSONObject> result = new ArrayList<>();
for (Cell c : row) {
JSONObject values = new JSONObject();
boolean isMerge = isMergedRegion(sheet, i, c.getColumnIndex());
values.put("isMerge",isMerge);
// 判断是否具有合并单元格
if (isMerge) {
JSONObject rs = getMergedRegionJsonValue(sheet, row.getRowNum(), c.getColumnIndex());
values.putAll(rs);
} else {
values.put("cellValue",getCellValue(c));
}
result.add(values);
}
results.add(result);
}
} catch (Exception e) {
e.printStackTrace();
}
return results;
}
/**
* 获取合并单元格的值
*/
public String getMergedRegionValue(Sheet sheet, int row, int column) {
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress ca = sheet.getMergedRegion(i);
int firstColumn = ca.getFirstColumn();
int lastColumn = ca.getLastColumn();
int firstRow = ca.getFirstRow();
int lastRow = ca.getLastRow();
if (row >= firstRow && row <= lastRow) {
if (column >= firstColumn && column <= lastColumn) {
Row fRow = sheet.getRow(firstRow);
Cell fCell = fRow.getCell(firstColumn);
return getCellValue(fCell);
}
}
}
return null;
}
public static JSONObject getMergedRegionJsonValue(Sheet sheet, int row, int column) {
JSONObject values = new JSONObject();
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress ca = sheet.getMergedRegion(i);
int firstColumn = ca.getFirstColumn();
int lastColumn = ca.getLastColumn();
int firstRow = ca.getFirstRow();
int lastRow = ca.getLastRow();
if (row >= firstRow && row <= lastRow) {
if (column >= firstColumn && column <= lastColumn) {
Row fRow = sheet.getRow(firstRow);
Cell fCell = fRow.getCell(firstColumn);
values.put("cellValue",getCellValue(fCell));
values.put("firstColumn",firstColumn);
values.put("lastColumn",lastColumn);
values.put("firstRow",firstRow);
values.put("lastRow",lastRow);
return values;
}
}
}
return values;
}
/**
* 判断合并了行
*/
private boolean isMergedRow(Sheet sheet, int row, int column) {
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress range = sheet.getMergedRegion(i);
int firstColumn = range.getFirstColumn();
int lastColumn = range.getLastColumn();
int firstRow = range.getFirstRow();
int lastRow = range.getLastRow();
if (row == firstRow && row == lastRow) {
if (column >= firstColumn && column <= lastColumn) {
return true;
}
}
}
return false;
}
/**
* 判断指定的单元格是否是合并单元格
* @param row 行下标
* @param column 列下标
*/
private static boolean isMergedRegion(Sheet sheet, int row, int column) {
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress range = sheet.getMergedRegion(i);
int firstColumn = range.getFirstColumn();
int lastColumn = range.getLastColumn();
int firstRow = range.getFirstRow();
int lastRow = range.getLastRow();
if (row >= firstRow && row <= lastRow) {
if (column >= firstColumn && column <= lastColumn) {
return true;
}
}
}
return false;
}
/**
* 判断sheet页中是否含有合并单元格
*/
private boolean hasMerged(Sheet sheet) {
return sheet.getNumMergedRegions() > 0 ? true : false;
}
/**
* 合并单元格
* @param firstRow 开始行
* @param lastRow 结束行
* @param firstCol 开始列
* @param lastCol 结束列
*/
private void mergeRegion(Sheet sheet, int firstRow, int lastRow, int firstCol, int lastCol) {
sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, firstCol, lastCol));
}
/**
* 获取单元格的值
*/
public static String getCellValue(Cell cell) {
if (cell == null) {return "";}
if (cell.getCellType() == CellType.STRING) {
return cell.getStringCellValue();
}
if (cell.getCellType() == CellType.BOOLEAN) {
return String.valueOf(cell.getBooleanCellValue());
}
if (cell.getCellType() == CellType.FORMULA) {
return cell.getCellFormula();
}
if (cell.getCellType() == CellType.NUMERIC) {
return String.valueOf(cell.getNumericCellValue());
}
return "";
}
public static void main(String[] args) {
List<List<JSONObject>> listMerges = readMergeExcel("E:\\test.xlsx",0,0,0);
for(List<JSONObject> result: listMerges){
System.out.println(result.toString());
}
}2.2 示例
表格示例
风萧萧 | 兮 | 易水寒 |
壮士一去兮不复还 | ！ | |
荆轲 | 刺 | 秦王 |
秦时明月 | 汉时关 | |
2.3 运行结果
[
[
{
"isMerge": false,
"cellValue": "风萧萧"
},
{
"isMerge": false,
"cellValue": "兮"
},
{
"isMerge": false,
"cellValue": "易水寒"
}
],
[
{
"firstColumn": 0,
"firstRow": 1,
"lastRow": 1,
"isMerge": true,
"lastColumn": 1,
"cellValue": "壮士一去兮不复还"
},
{
"firstColumn": 0,
"firstRow": 1,
"lastRow": 1,
"isMerge": true,
"lastColumn": 1,
"cellValue": "壮士一去兮不复还"
},
{
"isMerge": false,
"cellValue": "！"
}
],
[
{
"isMerge": false,
"cellValue": "荆轲"
},
{
"isMerge": false,
"cellValue": "刺"
},
{
"isMerge": false,
"cellValue": "秦王"
}
],
[
{
"isMerge": false,
"cellValue": "秦时明月"
},
{
"firstColumn": 1,
"firstRow": 3,
"lastRow": 3,
"isMerge": true,
"lastColumn": 2,
"cellValue": "汉时关"
},
{
"firstColumn": 1,
"firstRow": 3,
"lastRow": 3,
"isMerge": true,
"lastColumn": 2,
"cellValue": "汉时关"
}
]
]
