读取Excel文件写入数据库 Mybatis , POI , JXL

废话不多说,直接上代码结构图

所用到的lib包

Students 实体类

package com.test.model;

public class Students {
	private int id;
	private String username;
	private int age;
	private int salary;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public int getSalary() {
		return salary;
	}
	public void setSalary(int salary) {
		this.salary = salary;
	}
	@Override
	public String toString() {
		return "Students [id=" + id + ", username=" + username + ", age=" + age
				+ ", salary=" + salary + "]";
	}
	public Students(int id, String username, int age, int salary) {
//		super();
		this.id = id;
		this.username = username;
		this.age = age;
		this.salary = salary;
	}
	public Students() {
//		super();
	}
}

Mybatis 配置文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
	<environments default="development">
		<environment id="development">
			<transactionManager type="JDBC" />
			<!-- 配置数据库连接信息 -->
			<dataSource type="POOLED">
				<property name="driver" value="com.mysql.jdbc.Driver"/>
				<property name="url" value="jdbc:mysql://localhost:3306/testmysql"/>
				<property name="username" value="root"/>
				<property name="password" value="1234"/>
			</dataSource>
		</environment>
	</environments>

	<!-- sql语句的配置文件 -->
	<mappers>
		<mapper resource="com/test/reader/sqlconfig/students.xml"/>
	</mappers>

</configuration>

Students.xml  sql语句

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.test.readerExcel.TestReaderExcelToDB">

	<select id="getStudent" resultType="map">
		select * from students order by id
	</select>

	<select id="getStudentById" resultType="map" parameterType="map">
		select * from students where id = #{userId}
	</select>

	<delete id="deleteStuentById" parameterType="map">
		delete from students where id = #{userId}
	</delete>

	<insert id="insertStudent" parameterType="map">
		insert into students
			(username,age,salary)
		values
			(
				#{username},
				#{age},
				#{salary}
			)
	</insert>
</mapper>

SqlSessionUtil

package com.test.util;

import java.io.InputStream;

import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

public class SqlSessionUtil {

	public SqlSession getSqlSession() {

		String configFile = "mybatis_Config.xml";
		// 使用类加载器 加载mybatis的配置文件,mybatis配置文件中配置了关联映射文件
		InputStream inputStream = SqlSessionUtil.class.getClassLoader().getResourceAsStream(configFile);
		// 构建sqlSession工厂
		SqlSessionFactory sqlsessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
		SqlSession sqlSession = sqlsessionFactory.openSession();
		return sqlSession;

	}
}

读取Excel的工具类

这个读取Excel2007 的代码有点问题,不知道是方法问题,还是我代码问题,总是最后少一行,昨天找了半天没找到....真是吐血....

ReaderExcelUtils

package com.excelutils;

import java.io.File;
import java.io.FileInputStream;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

import jxl.Sheet;
import jxl.Workbook;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

/**
 * 读取Excel
 * @author CYX
 * @since 2016-6-4 上午1:03:23
 */
public class ReaderExcelUtils {

	/**
	 * 输入Excel文件,解析后返回ArrayList
	 *
	 * @param file
	 * 			输入的Excel文件
	 *
	 * @return ArrayList<Map>，其中的map以第一行的内容为键值
	 */
	@SuppressWarnings({ "unchecked", "rawtypes" })
	public static ArrayList<Map> ReaderExcel(File file){		

		/*
		 * workbook : 工作簿,就是整个Excel文档
		 * sheet : 工作表
		 * cell : 一个单元格
		 * row : 一行
		 */

		if(checkExcel2007(file)){
			return importToExcel2007(file);
		}

		//初始化返回值和字段名数组
		ArrayList<Map> arr = new ArrayList<Map>();
		String[] title;
		Workbook workbook = null;

		try{
			//读取Excel文件
			workbook = Workbook.getWorkbook(file);
			//总Sheet数
			int sheetNumber = workbook.getNumberOfSheets();
			System.out.println("Sheet总数: "+sheetNumber);
			for (int i = 0; i < sheetNumber; i++) {
				Sheet sheet = workbook.getSheet(i);

				//当前页 总记录行数和列数
				int rowCount = sheet.getRows();			//获取行数
				int columeCount = sheet.getColumns();	//获取列数
				System.out.println("总记录数 : "+rowCount);
				System.out.println("总列数 : "+columeCount);

				//第一行为字段名,所以行数大于一才执行
				if(rowCount > 1 && columeCount >0){
					//取第一列 为 字段名
					title = new String[columeCount];
					for (int j = 0; j < columeCount; j++) {
						title[j] = sheet.getCell(j,0).getContents().trim();
					}

					//取当前页所有值放入list中
					for (int h = 1; h < rowCount; h++) {	//行数
						LinkedHashMap dataMap = new LinkedHashMap();
						for (int k = 0; k < columeCount; k++) {	//列数
							dataMap.put(title[k], sheet.getCell(k,h).getContents());	//getContents() 获取单元格的值
						}
						arr.add(dataMap);
					}
				}
			}
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			if(workbook != null){
				workbook.close();
				workbook = null;
			}
		}
		return arr;
	}

	/**
	 * 输入2007版以上excel文件,解析后返回ArrayList(有个bug,暂时不用,保留)
	 * @param file
	 * @return
	 */
	@SuppressWarnings("rawtypes")
	public static ArrayList<Map> importToExcel2007(File file){
		ArrayList<Map> arr = new ArrayList<Map>();
		String[] title;

		//初始化
		FileInputStream readFile = null;
		XSSFWorkbook workbook = null;
		XSSFRow row = null;
		XSSFSheet sheet = null;
		XSSFCell cell = null;

		try{
			//读取文件
			readFile = new FileInputStream(file);
			workbook = new XSSFWorkbook(readFile);

			//文档页数
			int numOfSheets = workbook.getNumberOfSheets();
			System.out.println("文档页数 : "+numOfSheets);

			for (int i = 0; i < numOfSheets; i++) {
				//获取当前的sheet(工作表)
				sheet = workbook.getSheetAt(i);
				//获取当前页的行数
				int sheetRows = sheet.getLastRowNum();
				System.out.println("当前页总行数 : "+sheetRows);
				//如果当前页行数大于0,则先取第一行为字段名
				if(sheetRows > 0){
					row = sheet.getRow(0);	//当前页 第一行
					int cells = row.getLastCellNum();	//第一行 单元格数量
					title = new String[cells];
					for (int j = 0; j < cells; j++) {
						//列为空,则输入空字符串
						if(row.getCell(j) == null){
							title[j] = "";
							continue;
						}
						cell = row.getCell(j);
						switch (cell.getCellType()) {
							case Cell.CELL_TYPE_NUMERIC:{
								Integer num = new Integer((int) cell.getNumericCellValue());
								title[j] = String.valueOf(num);
								break;
							}
							case Cell.CELL_TYPE_STRING:{
								title[j] = cell.getRichStringCellValue().toString();
								break;
							}
							default:
								title[j] = "";
						}
					}
					//分行解析
					for (int j = 0; j < sheetRows; j++) {
						//如果是空行,则继续下一条
						if(sheet.getRow(j) == null){
							continue;
						}
						//将每行数据放入map中
						row = sheet.getRow(j);
						arr.add(getCellMap(row,cells,title));
					}
				}
			}
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			try {
				readFile.close();
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
		return arr;
	}

	/**
	 * 根据文件扩展名判断是否是Excel 2007 以上
	 * @param file
	 * @return
	 */
	private static boolean checkExcel2007(File file){
		String extendName = file.getName().substring(file.getName().lastIndexOf("."));
		if(extendName.equals(".xlsx")){
			return true;
		}
		return false;
	}

	/**
	 *	根据传入的Excel行数据,得到Map数据
	 * @param row
	 * @param cells
	 * @param title
	 * @return
	 */
	@SuppressWarnings({ "unchecked", "rawtypes" })
	private static Map getCellMap(XSSFRow row , int cells , String[] title){
		//初始化
		Map data = new HashMap();
		XSSFCell cell = null;

		//分列
		for (int i = 0; i < cells; i++) {
			//列为空,则输入空字符串
			if(row.getCell(i) == null){
				data.put(title[i], "");
				continue;
			}
			cell = row.getCell(i);
			switch (cell.getCellType()) {
				case Cell.CELL_TYPE_NUMERIC:{
					if(DateUtil.isCellDateFormatted(cell)){
						data.put(title[i], cell.getDateCellValue());
					}else{
						NumberFormat nf = NumberFormat.getInstance();
						nf.setGroupingUsed(false);
						data.put(title[i], nf.format(cell.getNumericCellValue()));
					}
					break;
				}
				case Cell.CELL_TYPE_STRING:{
					data.put(title[i], cell.getRichStringCellValue());
					break;
				}
				case Cell.CELL_TYPE_BOOLEAN:{
					data.put(title[i], cell.getBooleanCellValue());
					break;
				}
				default:
					data.put(title[i], "");
			}
		}
		return data;
	}
}

Java Bean的一些方法 很好用....多看看项目代码...

package com.beanutils;

import java.util.Map;

/**
 * JavaBean 工具方法
 * @author CYX
 * @since 2016-6-4 上午12:16:23
 */
public class MyBeanUtils {

	/**
	 * 将JavaBean中的get属性转换到Map中
	 *
	 * <pre>
	 * 符合拷贝条件的属性必须满足以下几点:
	 * 		1.源JavaBean中具有get方法的属性
	 * </pre>
	 *
	 * @param bean
	 *            源对象JavaBean
	 * @return 转换后的Map
	 * @throws Exception
	 */
	public static Map describe(Object bean)throws Exception{
		return org.apache.commons.beanutils.BeanUtils.describe(bean);
	}

}

测试Main方法

package com.test.readerExcel;

import java.io.File;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.ibatis.session.SqlSession;

import com.beanutils.MyBeanUtils;
import com.excelutils.ReaderExcelUtils;
import com.test.model.Students;
import com.test.util.SqlSessionUtil;

public class TestReaderExcelToDB {

	private static ReaderExcelUtils reu = new ReaderExcelUtils();
	private static SqlSessionUtil su = new SqlSessionUtil();
	private static SqlSession session = su.getSqlSession();
	private static String className = TestReaderExcelToDB.class.getName() + ".";

	public static void main(String[] args) throws Exception {
		InsertToDataBase();
	}

	/**
	 * 读取Excel文件,将数据存入数据库
	 *
	 * @param data
	 *            数据
	 * @throws Exception
	 */
	@SuppressWarnings({ "rawtypes", "static-access" })
	public static void InsertToDataBase() throws Exception {
		Date date = new Date();
		long time = date.getTime();
		String excelFileName = "D://Export Excel By MyBatis.xls";
		File file = new File(excelFileName);
		List<Map> dataListMap = reu.ReaderExcel(file);
		Iterator it = dataListMap.iterator();
		Students students = new Students();
		MyBeanUtils mu = new MyBeanUtils();

		try {
			while (it.hasNext()) {
				Map oneMap = (Map) it.next();
				students.setUsername(oneMap.get("姓名").toString());
				students.setAge(Integer.parseInt(oneMap.get("年龄").toString()));
				students.setSalary(Integer.parseInt(oneMap.get("工资").toString()));
				Map beanMap = mu.describe(students);

				int result = 0;
				try {
					result = session.insert(className + "insertStudent",beanMap);
					if(result < 1){
						System.out.println("插入数据库错误");
					}
					session.commit();
				} catch (Exception e) {
					e.printStackTrace();
					session.rollback();
				}
			}
			System.out.println("全部插入数据库");
			Date date2 = new Date();
			long time2 = date2.getTime();
			long longs = time2 - time;
			System.out.println(longs);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 获取Map中的key值
	 *
	 * @param dataMap
	 * @return
	 */
	public static String[] getMapKey(Map dataMap) {
		String[] keyArr = new String[dataMap.size()];
		if (dataMap.size() < 0 || dataMap == null) {
			System.out.println("Map为空");
			return null;
		}
		String keyStr = "";
		Set set = dataMap.keySet();
		for (Object name : set) {
			keyStr += name + ",";
		}
		keyStr = keyStr.substring(0, keyStr.length() - 1);
		keyArr = keyStr.split(",");
		return keyArr;
	}

}

Excel文件内容

执行之后,数据库就有了....

之前在公司电脑上测试,一千五百条数据的Excel 花了75秒左右...

晚上回家用自己电脑,才2,3秒....公司电脑真是渣....

手贱试了试五千条..才五秒....

哎,真是.....