myservlet.java

java导出Excel,使用jxl,可以完成将Excel内容插入数据库,将数据库内容导出到Excel

package com.xzb.servlet;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.xzb.dao.MyDao;
import com.xzb.entity.Test;

import jxl.*;
import jxl.read.biff.BiffException;

public class MyServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public MyServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		this.doPost(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		File sourcefile=new File("e:/test.xls");
		//Excel数据导入到数据库
		
		//从输入流创建Workbook
		InputStream is=new FileInputStream(sourcefile);
		//直接从本地文件创建Workbook
		
		List<Test> list=new ArrayList<Test>();
		try {
			Workbook wbk=Workbook.getWorkbook(sourcefile);
			//Workbook wbk=Workbook.getWorkbook(is);
			Sheet st=wbk.getSheet(0);
			for(int i=0;i<st.getRows();i++){
				Test test=new Test();
				for(int j=0;j<st.getColumns();j++){
					Cell cell=st.getCell(j, i);
					String content=cell.getContents();
					if(cell.getType()==CellType.LABEL)
						test.setName(content);
					else{
						//NumberCell ncell=(NumberCell)cell;
						test.setAge(Integer.parseInt(content));
					}
					//System.out.print(content+"   ");
				}
				list.add(test);
			}
			MyDao dao=new MyDao();
			int num=dao.insert(list);
			if(num>0){
				System.out.println("成功:"+num);
				wbk.close();
			}
		} catch (BiffException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}