JAVA實現Excel導入數據庫

1、所需jar包

commons-collections4-4.4.jar
commons-compress-1.18.jar
mysql-connector-java-5.1.33-bin.jar
poi-4.1.0.jar
poi-examples-4.1.0.jar
poi-excelant-4.1.0.jar
poi-ooxml-4.1.0.jar
poi-ooxml-schemas-4.1.0.jar
poi-scratchpad-4.1.0.jar
resolver.jar
xmlbeans-3.1.0.jar

2、excel讀取類

package com.njwd.leading;

import java.io.FileInputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class LeadingMenu {
	public static void main(String[] args) {
		System.out.println("11");
		try {
			
			// 創建工作簿
			XSSFWorkbook xssfWorkbook = new XSSFWorkbook(new FileInputStream("F:\\sql相關\\正式庫初始化sql\\權限路由表更新後.xlsx"));
			// 讀取第一個工作表(這裏的下標與list一樣的，從0開始取，之後的也是如此)
			XSSFSheet sheet = xssfWorkbook.getSheetAt(0);

			List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
			int pid = 0;
			int twoPid = 0;
			// 獲取第一行的數據
			for (int i = 1; i < sheet.getPhysicalNumberOfRows(); i++) {
				XSSFRow row = sheet.getRow(i);
				boolean flag = true;
				Map<String, Object> map = new HashMap<String, Object>();
				map.put("id", i);
				for (int j = 0; j < 4; j++) {
					if (row.getCell(0) == null) {
						flag=false;
						break;
					}

					map.put("name", row.getCell(0).toString());
					if (row.getCell(1) != null) {
						pid = i;
						map.put("menu_code", row.getCell(1).toString());
						map.put("parent_id", 0);
					}
					if (row.getCell(2) != null) {
						twoPid = i;
						map.put("menu_code", row.getCell(2).toString());
						map.put("parent_id", pid);
					}
					if (row.getCell(3) != null) {
						map.put("menu_code", row.getCell(3).toString());
						map.put("parent_id", twoPid);
					}

				}
				if(flag==false){
					break;
				}
				list.add(map);
				System.out.println(map);
			}
			System.out.println("=====開始插入==========");
			MenuDao menuDao =new MenuDao();
			menuDao.deleteMenu();
			menuDao.addMenu(list);
			System.out.println("======更新結束=========");
			// 獲取該行第一個單元格的數據

		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}

3、menuDao的數據庫JDBC類

 package com.njwd.leading;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.mysql.fabric.xmlrpc.base.Data;
import com.njwd.util.DatabaseConnect;

public class MenuDao extends DatabaseConnect{
	
	

	
	public void addMenu(List<Map<String, Object>> list) throws Exception{
		
		String sql = "insert into wd_sys_menu(id,menu_code,name,parent_id)"
				+"values (?,?,?,?)";
		PreparedStatement ps = conn.prepareStatement(sql);
		for (Map<String, Object> map : list) {
			if( map.get("id")!=null && map.get("menu_code")!=null  && map.get("name")!=null ){
				ps.setInt(1, Integer.parseInt(map.get("id").toString()));
				ps.setString(2, map.get("menu_code").toString());
				ps.setString(3, map.get("name").toString());
				ps.setString(4, map.get("parent_id").toString());
				ps.addBatch();
			}
			
		}
		ps.executeBatch();
		ps.clearBatch();
		ps.close();
		
	}
	
	public void deleteMenu() throws Exception{
		
		String sql = "delete from wd_sys_menu";
		PreparedStatement ps = conn.prepareStatement(sql);
		ps.executeUpdate();
		ps.close();
		
	}
	

}

4、DatabaseConnect工具類

package com.njwd.util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;

public class DatabaseConnect {
	protected  Connection conn ;
	
	public DatabaseConnect(){
		try {
			Properties properties =new Properties();
			properties.load(DatabaseConnect.class.getClassLoader().getResourceAsStream("jdbc.properties"));
			String url = properties.getProperty("url");
	        String user = properties.getProperty("user");
	        String password = properties.getProperty("password");
	        System.out.println(url);
        	Class.forName("com.mysql.jdbc.Driver"); // 加載驅動
            conn = DriverManager.getConnection(url,user,password); // 獲取數據庫連接
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	public void close(){
		try {
			conn.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}
	

}