环境：eclipse
方法：使用jxl.jar包

步骤一：
打开eclipse，创建Maven项目，在pom.xml中添加jxl依赖

pom.xml
       <dependency>
            <groupId>net.sourceforge.jexcelapi</groupId>
            <artifactId>jxl</artifactId>
            <version>2.6.12</version>
            <scope>${scope}</scope>
        </dependency>

步骤二：
创建ExcelUtil类：

package Tool;

import java.io.FileInputStream;
import java.io.IOException;

import jxl.Cell;
import jxl.JXLException;
import jxl.Sheet;
import jxl.Workbook;

public class ExcelUtil {
    private static Cell cel;
    //获取给定单元格的内容
    public static String getcell(String filename,int sheet,int row ,int column) throws JXLException, IOException{
        FileInputStream filein=new FileInputStream(filename);
        Workbook wb=Workbook.getWorkbook(filein);
        Sheet sh=wb.getSheet(sheet);
        cel=sh.getCell(row,column);
        return cel.getContents();
        
    }
}