java解析excel

最新推荐文章于 2025-09-09 18:54:43 发布

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本文介绍了一个用于解析Excel文件(.xls和.xlsx)的Java实用程序类。该类能够读取指定路径下的Excel文件，并将数据转换为Java Map集合，便于进一步的数据处理和分析。

<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.6</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.6</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.6</version>
</dependency>

package util;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class ExcelUtil {
public static Map<Integer, Object> parseExcel(File file) {
Map<Integer, Object> map = null;
InputStream in = null;
try {
in = new FileInputStream(file);
map = new HashMap<Integer, Object>();
if (file.getName().endsWith(".xls")) {
HSSFWorkbook hwb = new HSSFWorkbook(in);
int n = 0;
while (n < hwb.getNumberOfSheets()) {
Sheet sheet = hwb.getSheetAt(n);
Map<Integer, Object> m = parseSheet(sheet);
map.put(n, m);
n++;
}
} else if (file.getName().endsWith(".xlsx")) {
XSSFWorkbook xwb = new XSSFWorkbook(in);
int n = 0;
while (n < xwb.getNumberOfSheets()) {
Sheet sheet = xwb.getSheetAt(n);
Map<Integer, Object> m = parseSheet(sheet);
map.put(n, m);
n++;
}
} else {
throw new RuntimeException("不是excel文件！");
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return map;
}

public static Map<Integer, Object> parseSheet(Sheet sheet) {
Row r = sheet.getRow(0);
Iterator<Cell> i1 = r.cellIterator();
List<String> list = new ArrayList<String>();
Map<Integer, Object> m = new HashMap<Integer, Object>();
while (i1.hasNext()) {
list.add(i1.next().getStringCellValue());
}
for (int i = 1; i <= sheet.getLastRowNum(); i++) {
Map<String, Object> m1 = new HashMap<String, Object>();
Row row = sheet.getRow(i);
Iterator<Cell> inter = row.cellIterator();
int j = 0;
while (inter.hasNext()) {
m1.put(list.get(j), (inter.next().getStringCellValue()));
j++;
}
m.put(i, m1);
}
return m;
}

public static void main(String[] args) {
File f = new File("D:\\workspace1\\test\\HLM.xls");
Map<Integer, Object> m = parseExcel(f);
System.out.println(m);
}

}