excel 文件导入数据库(java)

excel文件导入数据库！

先上传，后解析，再对sql建表，插入数据，导入完成，删除上传的临时表！

谢谢指点！

1.导入jar

jxl.jar  

poi-poi-2.5.1jar

poi-contrib-2.5.1.jar

poi-scratchpad-2.5.1.jar

struts2.0的包

2.配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
 xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
 http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <filter>
  <filter-name>struts</filter-name>
  <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  <filter-mapping>
  <filter-name>struts</filter-name>
  <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

在web-app下新建一个upload文件夹用于放置临时文件
3.struts.xml

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
    "http://struts.apache.org/dtds/struts-2.1.dtd">

<struts>
    <package name="struts2" extends="struts-default">
     <action name="file_*" class="action.FileUploadAction" method="{1}">
   <result name="scsucc" type="chain">jiexi</result>
  </action>
  <action name="jiexi" class="action.FileJieXiAction">
  <result name="jxsucc">/MyJsp.jsp</result>
  </action>
 </package>
</struts>
4.FileUploadAction.java

package action;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class FileUploadAction extends ActionSupport{
 private File file;
 public File getFile() {
  return file;
 }
 public void setFile(File file) {
  this.file = file;
 }
 public String getFileFileName() {
  return fileFileName;
 }
 public void setFileFileName(String fileFileName) {
  this.fileFileName = fileFileName;
 }
 public String getFileContentType() {
  return fileContentType;
 }
 public void setFileContentType(String fileContentType) {
  this.fileContentType = fileContentType;
 }
 private String fileFileName;
 private String fileContentType;
 public String upload(){
  try {
   InputStream is= new FileInputStream(file);
   String root=ServletActionContext.getServletContext().getRealPath("/upload");
   File destFile=new File(root, this.getFileFileName());
   OutputStream os=new FileOutputStream(destFile);
   byte[] buffer = new byte[1024];
   int index = 0;
   try {
    while ((index = is.read(buffer)) > 0) {
     os.write(buffer, 0, index);
    }
    is.close();
    os.close();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  return "scsucc";
 }
}
5.FileJieXiAction.java

package action;

import java.io.File;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;

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

import org.apache.struts2.ServletActionContext;

import util.ConnDB;

import com.opensymphony.xwork2.Action;

public class FileJieXiAction implements Action{
 private File file;
 public File getFile() {
  return file;
 }
 public void setFile(File file) {
  this.file = file;
 }
 public String getFileFileName() {
  return fileFileName;
 }
 public void setFileFileName(String fileFileName) {
  this.fileFileName = fileFileName;
 }
 private String fileFileName;
 public String execute() throws Exception {
  // TODO Auto-generated method stub
  String realpath=ServletActionContext.getServletContext().getRealPath("/upload");
  Workbook wb=Workbook.getWorkbook(new File(realpath+"/"+fileFileName));
  Sheet sheet=wb.getSheet(0);
  int rowNum=sheet.getRows();
  int colNum=sheet.getColumns();
  System.out.println("colNum:"+colNum);
//  //建表
  String createTableSql=getCreateTableSql(rowNum,colNum,sheet);
  Connection conn=ConnDB.getConnection();
  System.out.println(createTableSql);
  Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
  st.execute(createTableSql);
  st.close();
  System.out.println("上传的文件："+fileFileName);
  //获取数据进行插入操作?????????????????????
  PreparedStatement ps = null;
  for(int i=1;i<rowNum;i++){
   String insertSql=getInsertSql(i,colNum,sheet);
   System.out.println(insertSql);
  ps = conn.prepareStatement(insertSql);
  ps.executeUpdate();
  }
  //删除临时文件
  new File(realpath+"/"+fileFileName).delete();
  ps.close();
  conn.close();
  return "jxsucc";
 }
 //配置插入数据的sql
 private String getInsertSql(int i, int colNum, Sheet sheet) {
  // TODO Auto-generated method stub
  String insertSql="insert into "+fileFileName.substring(0, fileFileName.length()-4)+" values( "+i+",";//2=j+1
  String temp="";
  for(int j=0;j<colNum;j++){
   Cell c= sheet.getCell(j,i);// "j,0" "i" 先插入一行数据//2=j+1
   String strValue="'"+c.getContents();
   System.out.println("strValue:"+ strValue);
   temp=temp+strValue+"',";
  }
  insertSql=insertSql+temp.substring(0,temp.length()-1)+");";
  return insertSql;
 }
 //配置创建表的sql
 private String getCreateTableSql(int rowNum, int colNum ,Sheet st) {
  // TODO Auto-generated method stub
  String createTableSql="create table "+fileFileName.substring(0, fileFileName.length()-4)+" (id bigint primary key auto_increment,";
  String temp="";
  for(int j=0;j<colNum;j++){
  Cell c= st.getCell(j,0);
  String strValue=c.getContents();
  temp=temp+strValue+" varchar(50) default null,";
  }
  createTableSql=createTableSql+temp.substring(0, temp.length()-1)+") ENGINE=InnoDB DEFAULT CHARSET=utf8;";
  return createTableSql;
 }

}
 

6.上传的页面 upload.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
   
    <title>My JSP 'index.jsp' starting page</title>
 <meta http-equiv="pragma" content="no-cache">
 <meta http-equiv="cache-control" content="no-cache">
 <meta http-equiv="expires" content="0">   
 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
 <meta http-equiv="description" content="This is my page">
 <!--
 <link rel="stylesheet" type="text/css" href="styles.css">
 -->
  </head>
 
  <body>
   <form action="file_upload" name="myform" method="post" enctype="multipart/form-data">
   <fieldset>
   <legend>文件上传</legend>
   请选择文件：<input type="file" name="file"/><input type="submit" value="开始上传"/>
   </fieldset>
   </form>
  </body>
</html>
第一次写！请高手多多指点…………感激不尽！！！！