java获取导入excel模版链接数据库

在Java中获取导入Excel模板并链接数据库的步骤可以分为以下几个部分：

### 1. 导入Excel文件
首先，你需要使用Apache POI库来读取Excel文件。Apache POI是一个强大的Java库，用于读写Microsoft Office文档。

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

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

public class ExcelReader {
    public static void main(String[] args) {
        String excelFilePath = "path/to/your/excel/file.xlsx";
        FileInputStream fis = null;
        Workbook workbook = null;

        try {
            fis = new FileInputStream(new File(excelFilePath));
            workbook = new XSSFWorkbook(fis);
            Sheet sheet = workbook.getSheetAt(0);

            for (Row row : sheet) {
                for (Cell cell : row) {
                    switch (cell.getCellType()) {
                        case STRING:
                            System.out.print(cell.getStringCellValue() + "\t");
                            break;
                        case NUMERIC:
                            System.out.print(cell.getNumericCellValue() + "\t");
                            break;
                        case BOOLEAN:
                            System.out.print(cell.getBooleanCellValue() + "\t");
                            break;
                        default:
                            System.out.print("-\t");
                    }
                }
                System.out.println();
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (workbook != null) workbook.close();
                if (fis != null) fis.close();
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }
}

### 2. 链接数据库
接下来，你需要使用JDBC来链接数据库。以下是一个简单的示例，展示了如何链接MySQL数据库并插入数据。

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

public class DatabaseConnector {
    private static final String URL = "jdbc:mysql://localhost:3306/your_database";
    private static final String USER = "your_username";
    private static final String PASSWORD = "your_password";

    public static Connection getConnection() throws SQLException {
        return DriverManager.getConnection(URL, USER, PASSWORD);
    }

    public static void insertData(String data) {
        String sql = "INSERT INTO your_table (column_name) VALUES (?)";
        try (Connection conn = getConnection();
             PreparedStatement pstmt = conn.prepareStatement(sql)) {
            pstmt.setString(1, data);
            pstmt.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

### 3. 结合Excel读取和数据库插入
最后，你需要将Excel读取和数据库插入结合起来。以下是一个简单的示例：

public class ExcelToDatabase {
    public static void main(String[] args) {
        String excelFilePath = "path/to/your/excel/file.xlsx";
        FileInputStream fis = null;
        Workbook workbook = null;

        try {
            fis = new FileInputStream(new File(excelFilePath));
            workbook = new XSSFWorkbook(fis);
            Sheet sheet = workbook.getSheetAt(0);

            for (Row row : sheet) {
                Cell cell = row.getCell(0); // Assuming data is in the first column
                if (cell != null) {
                    String data = cell.getStringCellValue();
                    DatabaseConnector.insertData(data);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (workbook != null) workbook.close();
                if (fis != null) fis.close();
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }
}

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