Tomcat Excel中的数据导出到页面中显示

效果：为了实现，在页面上点击excel导入按钮，选择excel文件后，把文件显示到页面上

1、实体类

1.1  分摊实体的数据信息

package com.whir.muju;

public class Fentan {
    private String xh;
    private String ftcbzx;
    private String gzno;
    private String xshtno;
    private String mjno;
    private String xmno;
    private String ftje;
    private String bz;
    public String getXh() {
        return xh;
    }
    public void setXh(String xh) {
        this.xh = xh;
    }
    public String getFtcbzx() {
        return ftcbzx;
    }
    public void setFtcbzx(String ftcbzx) {
        this.ftcbzx = ftcbzx;
    }
    public String getGzno() {
        return gzno;
    }
    public void setGzno(String gzno) {
        this.gzno = gzno;
    }
    public String getXshtno() {
        return xshtno;
    }
    public void setXshtno(String xshtno) {
        this.xshtno = xshtno;
    }
    
    public String getMjno() {
        return mjno;
    }
    public void setMjno(String mjno) {
        this.mjno = mjno;
    }
    public String getXmno() {
        return xmno;
    }
    public void setXmno(String xmno) {
        this.xmno = xmno;
    }
    public String getFtje() {
        return ftje;
    }
    public void setFtje(String ftje) {
        this.ftje = ftje;
    }
    public String getBz() {
        return bz;
    }
    public void setBz(String bz) {
        this.bz = bz;
    }
    @Override
    public String toString() {
        return "Fentan [xh=" + xh + ", ftcbzx=" + ftcbzx + ", gzno=" + gzno
                + ", xshtno=" + xshtno + ", mjno=" + mjno + ", xmno=" + xmno
                + ", ftje=" + ftje + ", bz=" + bz + "]";
    }
    
    
    

}

1.2 分摊的集合信息

package com.whir.muju;

import java.util.List;

public class PageFentan {


    private int datanum;//总的数据条数
    
    private List<Fentan> data;

    public List<Fentan> getData() {
        return data;
    }

    public void setData(List<Fentan> data) {
        this.data = data;
    }



    public int getDatanum() {
        return datanum;
    }

    public void setDatanum(int datanum) {
        this.datanum = datanum;
    }

}

2.工具类

package com.whir.muju;

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

import javax.servlet.http.HttpServletResponse;

import net.sf.json.JSONObject;

import org.apache.commons.io.FileUtils;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.struts2.ServletActionContext;



public class ExeclShow {
    private InputStream inputStream;
    //封装上传文件属性
    private File attachments;
    
    //封装上传文件的类型
    private String attachmentsContentType;
    
    //封装上传文件名称
    private String attachmentsFileName;
    
    
    //得到上传的路径
    public String getUploadPath(){
        StringBuffer resultJson= new StringBuffer("");
        String resultData="";
        ////在实际开发中,需要判断一下是否上传了文件，即upload是否为空,不为空，才进行上传的操作。
        if(attachments!=null){            
                
            //1.输出上传的类型
            System.out.println("上传文件的名称用File取得:"+this.getAttachments().getName());
            System.out.println("直接用属性取得名称："+this.getAttachmentsFileName());
            System.out.println("文件上传的类型:"+this.getAttachmentsContentType());
            //2.设置上传文件的放置位置，通常放在服务器下面的upload文件夹下.
            String path="D:/jboss/jboss-as/server/langchao/deploy/defaultroot.war/WEB-INF/mjfiles";
            //3.这是一个目录，如果这个目录不存在，需要创建这个目录(包括其父目录)
            File srcFile=new File(path);
            if(!srcFile.exists()){
                srcFile.mkdirs();
            }
            //4.通常还需要对上传的文件名进行UUID的操作，使文件名不能重复。文件的返回路径是fileName.
            String fileName=getAnglePath(this.getAttachmentsFileName());
            System.out.println("fileName:"+fileName);
            
            //5.调用FileUtils类执行上传的操作.
            try {
                //写复制方法
                FileUtils.copyFile(attachments,new File(srcFile,fileName));
                //将fileName进行相应的处理,去掉前面的一些无用的东西。 得到项目名
                //String context=ServletActionContext.getRequest().getContextPath().substring(1);
                resultJson.append(fileName.substring(1)).append("|");
                fileName=path+fileName;
                System.out.println("文件上传成功，fileName路径:"+fileName);
                
                System.out.println("======excelshow start======");
                resultData=getDataFromExcel3(fileName);
                System.out.println(resultData.toString());
                System.out.println("======excelshow end======");
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        HttpServletResponse response=ServletActionContext.getResponse(); 
        response.setContentType("text/html;charset=utf-8");
        
        
        try {
            PrintWriter out= response.getWriter();
            out.println(resultData);
            out.flush();
            out.close();
        } catch (IOException e) {
            e.printStackTrace();
        }    
        
        return null;

    }

    /**
     * 将一个文件名设置成唯一的文件名
     * @param fileName 普通的文件名
     * @return 返回一个唯一的文件名
     */
    public String getAnglePath(String fileName) {
        //不采用UUID的形式，可以自定义当前的时间字符串来处理.
        SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMddHHmmss");
        String angle=sdf.format(new java.util.Date());
        return File.separator+angle+"_"+fileName;
    }
    
    
    /**
     * 读取出filePath中的所有数据信息
     * @param filePath excel文件的绝对路径
     * 
     */
    
    public static String  getDataFromExcel3(String filePath)
    {
        
        List<Fentan> list = new ArrayList<Fentan>();
      
        //判断是否为excel类型文件
        if(!filePath.endsWith(".xls")&&!filePath.endsWith(".xlsx"))
        {
            System.out.println("文件不是excel类型");
        }
        
        FileInputStream fis =null;
        Workbook wookbook = null;
        int flag = 0;
        
        try
        {
            //获取一个绝对地址的流
              fis = new FileInputStream(filePath);
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
       
        try 
        {
            //2007版本的excel，用.xlsx结尾
            wookbook = new XSSFWorkbook(fis);//得到工作簿
        } 
        catch (Exception ex) 
        {
            //ex.printStackTrace();
            try
            {
                 fis = new FileInputStream(filePath);
                 
                 //2003版本的excel，用.xls结尾
                 wookbook = (Workbook) new HSSFWorkbook(fis);//得到工作簿
                 
            } catch (IOException e)
            {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        
        //得到一个工作表
        Sheet sheet = wookbook.getSheetAt(0);
      
       //获取sheet中第一行行号
        int firstRowNum = sheet.getFirstRowNum();
        //获取sheet中最后一行行号
        int lastRowNum = sheet.getLastRowNum();
        String str="";
        try
        {
           //循环插入数据
            for(int i = firstRowNum+2 ; i <= lastRowNum ; i++)
            {
    
                //获得第i行对象
                Row row = sheet.getRow(i);
                
                Fentan ft=new Fentan();
                
                Cell cell1=row.getCell(0); //序号
                if(cell1!=null){
                    cell1.setCellType(Cell.CELL_TYPE_STRING);
                    ft.setXh(cell1.getStringCellValue());
                    
                }
                Cell cell2=row.getCell(1); 
                if(cell2!=null){
                    cell2.setCellType(Cell.CELL_TYPE_STRING);
                    ft.setFtcbzx(cell2.getStringCellValue());
                    
                }
                Cell cell3=row.getCell(2); 
                if(cell3!=null){
                    cell3.setCellType(Cell.CELL_TYPE_STRING);
                    ft.setGzno(cell3.getStringCellValue());
                    
                }
                Cell cell4=row.getCell(3); 
                if(cell4!=null){
                    cell4.setCellType(Cell.CELL_TYPE_STRING);
                    ft.setXshtno(cell4.getStringCellValue());
                    
                }
                Cell cell5=row.getCell(4); 
                if(cell5!=null){
                    cell5.setCellType(Cell.CELL_TYPE_STRING);
                    ft.setMjno(cell5.getStringCellValue());
                    
                }
                Cell cell6=row.getCell(5); 
                if(cell6!=null){
                    cell6.setCellType(Cell.CELL_TYPE_STRING);
                    ft.setXmno(cell6.getStringCellValue());
                    
                }
                Cell cell7=row.getCell(6); 
                if(cell7!=null){
                    cell7.setCellType(Cell.CELL_TYPE_STRING);
                    ft.setFtje(cell7.getStringCellValue());
                    
                }
                Cell cell8=row.getCell(7); 
                if(cell8!=null){
                    cell8.setCellType(Cell.CELL_TYPE_STRING);
                    ft.setBz(cell8.getStringCellValue());
                    
                }
                
                
                list.add(ft);
            } 
            
            if(list.size()>0){
                  PageFentan page=new PageFentan();
                  page.setData(list);
                  page.setDatanum(list.size());
                  JSONObject jsonObj=JSONObject.fromObject(page);
                  String jsonstr =jsonObj.toString();
                  System.out.println("excel文件解析出来的数据："+jsonstr);
                  return jsonstr;
              } 
             
        }catch (ClassCastException e)
        {
            e.printStackTrace();
            //System.out.println("数据不全是数字或全部是文字!");//由于都是设置的字符串，所以不会报错
        }
            
          
         return "";
        
    }

    public static void main(String[] args){
        getDataFromExcel3("E://123.xlsx");
    }

    public InputStream getInputStream() {
        return inputStream;
    }


    public void setInputStream(InputStream inputStream) {
        this.inputStream = inputStream;
    }


    public File getAttachments() {
        return attachments;
    }


    public void setAttachments(File attachments) {
        this.attachments = attachments;
    }


    public String getAttachmentsContentType() {
        return attachmentsContentType;
    }


    public void setAttachmentsContentType(String attachmentsContentType) {
        this.attachmentsContentType = attachmentsContentType;
    }


    public String getAttachmentsFileName() {
        return attachmentsFileName;
    }


    public void setAttachmentsFileName(String attachmentsFileName) {
        this.attachmentsFileName = attachmentsFileName;
    }
    
    

}

3.jsp页面代码(从上一个页面跳转到该页面时带了一些数据信息)

<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib  prefix="s" uri="/struts-tags" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>报销明细</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!--这里可以追加导入模块内私有的js文件或css文件-->
</head>
<body>
    <s:form name="queryFormdd" id="queryFormdd" action="Detail!fyftDetailMethod.action" method="post" theme="simple"  enctype="multipart/form-data">
        <div style="text-align:center;margin-top:20px;margin-right:10px;">
                    
                    <div style="float: right;">&nbsp; Excel 导入: <input  type="file" name="attachments" id="attachments" onchange="return fileUpload()"/></div>
                    <input style=" float:right;" type="button"value="增加" onclick="addTable()"> 
                    <input style=" float:right"  type="button" value="确认"onclick="resetForm();" >

                    <input type="hidden" value="<s:property value='#request.je'/>" name="moneys" id="moneys" />            
                    <input type="hidden" value="<s:property value='#request.gsjc'/>" name="gs" id="gs" />    
                    <input type="hidden" value="<s:property value='#request.fykm'/>" name="fykm" id="fykm" />    
                    <input type="hidden" value="<s:property value='#request.fwlx'/>" name="fwlx" id="fwlx" />        
                    <input type="hidden" id="mjtime" value="" name="mjtime" /><br/>
                        
        </div>
    
        
        <table width="100%" border="0" cellpadding="1" cellspacing="1"    class="listTable" id='viewTabs'>
            <thead id="headerContainer">
                <tr class="listTableHead">
                
                    <td>序号</td>
                    <td>成本中心</td>
                    <td>资产编号</td>
                    <td>合同号</td>
                    <td>模具号</td>
                    <td>项目名称</td>
                    <td>费用</td>
                    <td>备注</td>
                    <td>操作</td>
                </tr>
                
            </thead>
            <tbody id="Contbody">
                <tr>
                   <td><input type="text" class="inputText" id="xh" value="" name="xh" /></td>
                   <td><input type="text" class="inputText" id="ftcbzx" value="" name="ftcbzx" /></td>
                   <td><input type="text" class="inputText" id="gdzcno" value="" name="gdzcno" /></td>
                   <td><input type="text" class="inputText" id="xshtno" value="" name="xshtno" /></td>
                   <td><input type="text" class="inputText" id="mjno" value="" name="mjno" /></td>
                   <td><input type="text" class="inputText" id="xm"   value="" name="xm" /></td>
                   <td><input type="text" class="inputText" id="ftje" value="" name="ftje" /></td>
                   <td><input type="text" class="inputText" id="bz"   value="" name="bz" /></td>
                   <td><input type="button" value ="删除"onclick="del(this);"></td>
                </tr>
            </tbody>

        </table>
    </s:form>
</body>

    
 <script  type="text/javascript">
                var tr="";
                var objtr="";
                window.onload = function () {
                      //添加时间
                      var currentdate = getNowFormatDate();
                      document.getElementById("mjtime").value=currentdate;
                       var tab = $("[id='viewTabs'] tr")[1];
                       $("input[name='ftcbzx']").after("<a href="javascript:void(0);" class="selectIco" onclick="selectcbzx(this)" style="margin-left: -30px;"></a>");
                       tr = $(tab).clone(true);     
                       //序号编号
                       xhJudge();
                       
                };
                 //删除按钮
               function del(_this){
                  var t=document.getElementById('viewTabs');  
                  var $trNode = $(_this).parent().parent();
                  var flag = confirm("确定删除该行数据吗？");
                    if (flag) {
                       $trNode.remove();
                       xhJudge();
                    }

               };
        
                //文件上传
                function fileUpload(){
                   // 创建formdata对象
                
                   //给formData对象添加<input>标签,注意与input标签的ID一致
                  // var file1 = document.getElementById('file').files[0];
                    
                    var datanum=0;
                    $("#queryFormdd").ajaxSubmit({ 
                        type:'post',
                        url:'mjexcelshow!getUploadPath.action',
                        success: function(response,status,xhr) {   //提交成功后自动执行的处理函数，参数data就是服务器返回的数据。
                                    var jsonPage = eval('('+response+')');
                                    datanum=jsonPage.datanum;//total number
                                    $("#Contbody").empty();
                                    if(datanum==0){
                                        alert("选择的excel没有数据");
                                    }
                                    
                                    for(var i=0;i<datanum;i++){
                                        $("#Contbody").append("<tr>"+
                                            " <td><input type='text' class='inputText' id='xh' value='"+jsonPage.data[i].xh+"' name='xh' /></td>"+
                                            " <td><input type='text' class='inputText' id='ftcbzx' value='"+jsonPage.data[i].ftcbzx+"' name='ftcbzx' /></td>"+
                                            " <td><input type='text' class='inputText' id='gdzcno'  value='"+jsonPage.data[i].gzno+"' name='gdzcno' /></td>"+
                                            " <td><input type='text' class='inputText' id='xshtno' value='"+jsonPage.data[i].xshtno+"' name='xshtno' /></td>"+
                                            " <td><input type='text' class='inputText' id='mjno'  value='"+jsonPage.data[i].mjno+"' name='mjno' /></td>"+
                                            " <td><input type='text' class='inputText' id='xm'  value='"+jsonPage.data[i].xmno+"' name='xm' /></td>"+
                                            " <td><input type='text' class='inputText' id='ftje' value='"+jsonPage.data[i].ftje+"' name='ftje' /></td>"+
                                            " <td><input type='text' class='inputText' id='bz' value='"+jsonPage.data[i].bz+"' name='bz' /></td>"+
                                            "<td><input type='button' value ='删除' onclick='del(this);'></td>"+
                                        "</tr>");
                                    }
                                    
                                    
                                },
                        error: function(data, status, e) {  //提交失败自动执行的处理函数。
                            alert('上传失败,请检查上传文件格式和文件类型');
                        }
                    });
                    
                    return false;//阻止页面跳转
                }

               //增加行
               function addTable(){
                    var obj=addJudge();
                //    console.log(obj);
                      if(obj.zt=="1"){
                           var tr1 = tr.clone(true);
                           tr1.appendTo($("[id='viewTabs']"));
                           var tds=$("#viewTabs").find("tr");
                           var lengths=tds.length;
                           //$(tds[lengths-1]).find("[name='subject']").val("");
                           $(tds[lengths-1]).find("[name='ftcbzx']").val("");
                           $(tds[lengths-1]).find("[name='gdzcno']").val("");
                           $(tds[lengths-1]).find("[name='xshtno']").val("");
                           $(tds[lengths-1]).find("[name='mjno']").val("");
                           $(tds[lengths-1]).find("[name='xm']").val("");
                           $(tds[lengths-1]).find("[name='ftje']").val("");
                           $(tds[lengths-1]).find("[name='bz']").val("");
                      }else{
                           alert(obj.ts);
                      }
                     
                  };
</script>

</html>