返回目录：excel表格制作
package bis.excel;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import jxl.Sheet;
import jxl.Workbook;
public class Excel {
@SuppressWarnings("unchecked")
public List addCust(File file){
List list=new ArrayList();
List list2=new ArrayList();
Workbook rwb=null;
try {
List list1=new ArrayList();
InputStream is=new FileInputStream(file);//读取文件（所要导入excel的保存目录，如：f:\\a.xls）
rwb=Workbook.getWorkbook(is);//创建工作薄
Sheet rs=rwb.getSheet(0);//读取excel中的第一个工作表（默认新建excel下面有sheet1,sheet2,sheet3）
int cellCount=rs.getColumns();//获取Sheet表中所包含的总列数
int rowCount=rs.getRows();//获取Sheet表中所包含的总行数
for(int m=0;m<cellCount;m++){//将表的第一行数据保存到list1中(列名)，即id,name ,age
String cell=rs.getCell(m,0).getContents();
list1.add(cell);
}
for(int i=1;i<rowCount;i++){//获取值
Map map=new TreeMap();
for(int j=0;j<cellCount;j++){
map.put(list1.get(j),rs.getCell(j,i).getContents());//将值以键/值对方式保存到map对象中即（id:1,name:zhangsan,age:18）
}
list.add(map);//将值保存到list中
//System.out.println(list.get(i-1));
}
list2.add(list1);//将表头（id,name,age）保存到list2中
list2.add(list);//将值保存到list2中
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
rwb.close();
}
return list2;
}
public void tosql(){
List list=addCust(file);//file:所要导入excel的保存目录，如：f:\\a.xls
Map map=new HashMap();
String[] values=new String[ls2.size()];//保存id,name,age 值
for (int i =0; i < ls2.size(); i++) {
map=(Map)ls2.get(i);
String value="";
id=(String)map.get("id");
name=(String)map.get("name");
age=(String)map.get("age");
value=id+";"+name+";"+age;
values[i]=value;
}
}
}
这是段读取excel表数据的代码，在tosql方法中调用addCust方法读取excel表，最后把所有行的id,name,age值保存到了values数组中，也可以保存到类中，如果你会对数据库操作的话，
后面的你自己弄下就e799bee5baa6e997aee7ad94e78988e69d83364行了，不会的话留言，我晚上在告诉你，我现在上班呢，时间有限，只能写这么多了
java通过poi把excel文件导入mysql数据库报错是因为excel中的数据类型要跟mysql中的数据类型和长度对应，否则类型转换异常是最常见的。所以插入到mysql数据库的时候需要做类型检查。
1、Excel中的测试数据：
2、数据库表结构：
CREATE TABLE `student_info` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`no` varchar(20) DEFAULT NULL,
`name` varchar(20) DEFAULT NULL,
`age` varchar(10) DEFAULT NULL,
`score` float DEFAULT '0',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
3、java源码部分ReadExcel.java：
/**
* 读取excel中的数据并插入db
*/
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import com.b510.common.Common;
import com.b510.excel.vo.Student;
/**
* @author pieryon
* @created 2016-5-18
*/
public class ReadExcel {
public List<Student> readXls() throws IOException {
InputStream is = new FileInputStream(Common.EXCEL_PATH);
HSSFWorkbook hssfWorkbook = new HSSFWorkbook(is);
Student student = null;
List<Student> list = new ArrayList<Student>();
// 循环工作表Sheet
for (int numSheet = 0; numSheet < hssfWorkbook.getNumberOfSheets(); numSheet++) {
HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);
if (hssfSheet == null) {
continue;
}
// 循环行Row
for (int rowNum = 1; rowNum <= hssfSheet.getLastRowNum(); rowNum++) {
HSSFRow hssfRow = hssfSheet.getRow(rowNum);
if (hssfRow != null) {
student = new Student();
HSSFCell no = hssfRow.getCell(0);
HSSFCell name = hssfRow.getCell(1);
HSSFCell age = hssfRow.getCell(2);
HSSFCell score = hssfRow.getCell(3);
student.setNo(getValue(no));
student.setName(getValue(name));
student.setAge(getValue(age));
student.setScore(Float.valueOf(getValue(score)));
list.add(student);
}
}
}
return list;
}
@SuppressWarnings("static-access")
private String getValue(HSSFCell hssfCell) {
if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {
// 返回7a64e59b9ee7ad94339布尔类型的值
return String.valueOf(hssfCell.getBooleanCellValue());
} else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {
// 返回数值类型的值
return String.valueOf(hssfCell.getNumericCellValue());
} else {
// 返回字符串类型的值
return String.valueOf(hssfCell.getStringCellValue());
}
}
}
2、SaveData2DB.java
/**
* 插入数据到db
*/
import java.io.IOException;
import java.sql.SQLException;
import java.util.List;
import com.b510.common.Common;
import com.b510.excel.util.DbUtil;
import com.b510.excel.vo.Student;
/**
* @author pieryon
* @created 2016-5-18
*/
public class SaveData2DB {
@SuppressWarnings({ "rawtypes" })
public void save() throws IOException, SQLException {
ReadExcel xlsMain = new ReadExcel();
Student student = null;
List<Student> list = xlsMain.readXls();
for (int i = 0; i < list.size(); i++) {
student = list.get(i);
List l = DbUtil.selectOne(Common.SELECT_STUDENT_SQL + "'%" + student.getName() + "%'", student);
if (!l.contains(1)) {
DbUtil.insert(Common.INSERT_STUDENT_SQL, student);
} else {
System.out.println("The Record was Exist : No. = " + student.getNo() + " , Name = " + student.getName() + ", Age = " + student.getAge() + ", and has been throw away!");
}
}
}
}
保存结果：
java 读excel 还是比较方便简单的，原理就是，先用java 读取excel，然后，一行行的写入数据库，字段的话，你自己程序里面写就行了，给你个例子：
从Excel读取数据,生成新的Excel，以及修改Excel
package common.util;
import jxl.*;
import jxl.format.UnderlineStyle;
import jxl.write.*;
import jxl.write.Number;
import jxl.write.Boolean;
import java.io.*;
/**
* Created by IntelliJ IDEA.
* User: xl
* Date: 2005-7-17
* Time: 9:33:22
* To change this template use File | Settings | File Templates.
*/
public class ExcelHandle
{
public ExcelHandle()
{
}
/**
* 读取Excel
*
* @param filePath
*/
public static void readExcel(String filePath)
{
try
{
InputStream is = new FileInputStream(filePath);
Workbook rwb = Workbook.getWorkbook(is);
//Sheet st = rwb.getSheet("0")这里有两种方法获取sheet表,1为名字，而为下标，从0开始
Sheet st = rwb.getSheet("original");
Cell c00 = st.getCell(0,0);
//通用的获取cell值的方式,返回字符串
String strc00 = c00.getContents();
//获得cell具体类型值的方式
if(c00.getType() == CellType.LABEL)
{
LabelCell labelc00 = (LabelCell)c00;
strc00 = labelc00.getString();
}
//输出
System.out.println(strc00);
//关闭
rwb.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
/**
* 输出Excel
*
* @param os
*/
public static void writeExcel(OutputStream os)
{
try
{
/**
* 只能通过API提供的工厂方法来创建Workbook，而不能使用WritableWorkbook的构造函数，
* 因为类WritableWorkbook的构造函数为protected类型
* method(1)直接从目标文件中读取WritableWorkbook wwb = Workbook.createWorkbook(new File(targetfile));
* method(2)如下实例所示 将WritableWorkbook直接写入到输出流
*/
WritableWorkbook wwb = Workbook.createWorkbook(os);
//创建Excel工作表 指定名称和位置
WritableSheet ws = wwb.createSheet("Test Sheet 1",0);
//**************往工作表中添加数据*****************
//1.添加Label对象
Label label = new Label(0,0,"this is a label test");
ws.addCell(label);
//添加带有字型Formatting对象
WritableFont wf = new WritableFont(WritableFont.TIMES,18,WritableFont.BOLD,true);
WritableCellFormat wcf = new WritableCellFormat(wf);
Label labelcf = new Label(1,0,"this is a label test",wcf);
ws.addCell(labelcf);
//添加带有字体颜色的Formatting对象
WritableFont wfc = new WritableFont(WritableFont.ARIAL,10,WritableFont.NO_BOLD,false,
UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.RED);
WritableCellFormat wcfFC = new WritableCellFormat(wfc);
Label labelCF = new Label(1,0,"This is a Label Cell",wcfFC);
ws.addCell(labelCF);
//2.添加Number对象
Number labelN = new Number(0,1,3.1415926);
ws.addCell(labelN);
//添加带有formatting的Number对象
NumberFormat nf = new NumberFormat("#.##");
WritableCellFormat wcfN = new WritableCellFormat(nf);
Number labelNF = new jxl.write.Number(1,1,3.1415926,wcfN);
ws.addCell(labelNF);
//3.添加Boolean对象
Boolean labelB = new jxl.write.Boolean(0,2,false);
ws.addCell(labelB);
//4.添加DateTime对象
jxl.write.DateTime labelDT = new jxl.write.DateTime(0,3,new java.util.Date());
ws.addCell(labelDT);
//添加带有formatting的DateFormat对象
DateFormat df = new DateFormat("dd MM yyyy hh:mm:ss");
WritableCellFormat wcfDF = new WritableCellFormat(df);
DateTime labelDTF = new DateTime(1,3,new java.util.Date(),wcfDF);
ws.addCell(labelDTF);
//添加图片对象,jxl只支持png格式图片
File image = new File("f:\\2.png");
WritableImage wimage = new WritableImage(0,1,2,2,image);
ws.addImage(wimage);
//写入工作表
wwb.write();
wwb.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
/**
* 拷贝后,进行修改,其中file1为被copy对象，file2为修改后创建的对象
* 尽单元格原e79fa5e98193e4b893e5b19e334有的格式化修饰是不能去掉的，我们还是可以将新的单元格修饰加上去，
* 以使单元格的内容以不同的形式表现
* @param file1
* @param file2
*/
public static void modifyExcel(File file1,File file2)
{
try
{
Workbook rwb = Workbook.getWorkbook(file1);
WritableWorkbook wwb = Workbook.createWorkbook(file2,rwb);//copy
WritableSheet ws = wwb.getSheet(0);
WritableCell wc = ws.getWritableCell(0,0);
//判断单元格的类型,做出相应的转换
if(wc.getType == CellType.LABEL)
{
Label label = (Label)wc;
label.setString("The value has been modified");
}
wwb.write();
wwb.close();
rwb.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
//测试
public static void main(String[] args)
{
try
{
//读Excel
ExcelHandle.readExcel("f:/testRead.xls");
//输出Excel
File fileWrite = new File("f:/testWrite.xls");
fileWrite.createNewFile();
OutputStream os = new FileOutputStream(fileWrite);
ExcelHandle.writeExcel(os);
//修改Excel
ExcelHandle.modifyExcel(new file(""),new File(""));
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
2.在jsp中做相关测试，创建一个writeExcel.jsp
<%
response.reset();//清除Buffer
response.setContentType("application/vnd.ms-excel");
File fileWrite = new File("f:/testWrite.xls");
fileWrite.createNewFile();
new FileOutputStream(fileWrite);
ExcelHandle.writeExcel(new FileOutputStream(fileWrite));
%>
在IE中浏览writeExcel.jsp就可以动态生成Excel文档了，其中response.setContentType("application/vnd.ms- excel");语句必须要，才能确保不乱码，在jsp中输入<%@page contentType="application/vnd.ms- excel;charset=GBK"%>不行。
错了，你是百要批量导入吗？
需要度下载poi包
首先要先把文件转变专成数据流InputStream，然后
try
{
HSSFWorkbook workbook = new HSSFWorkbook(is);
HSSFSheet sheet=workbook.getSheetAt(0);
}
catch(Exception e)
{
e.printStackTrace();
}
if(sheet==null)
{
close(streamIn);
return null;
}
int rows = sheet.getPhysicalNumberOfRows();
if(rows<=1)
{
close(streamIn);
return null;
}
HSSFRow row =null;
DecimalFormat formatter=new DecimalFormat("#");
for(int r = 1;r< rows;r++)
{
}
遍历取出属，并保存