miniUI ExcelExport导出JAVA实现

时间：2017-10-31 11:04:03 阅读：577 评论：0 收藏：0 [点我收藏+]

标签：orm json.js except tool none ajax target ddc writable

一、miniUI官方前台页面

<!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> 导出Excel</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

    <meta http-equiv="content-type" content="text/html; charset=UTF-8" /><link href="../demo.css" rel="stylesheet" type="text/css" />

    
    <script src="../../scripts/boot.js" type="text/javascript"></script>
    
        
</head>
<body>
    <h1> 导出Excel</h1>      

    <div style="padding-bottom:5px;">
        
        <span>员工姓名：</span><input type="text" id="key"  />
        <input type="button" value="查找" onclick="search()"/>
        
        <input type="button" value="导出Excel" onclick="ExportExcel()" style="margin-left:50px;"/>
    </div>
    <div id="datagrid1" class="mini-datagrid" style="width:700px;height:280px;" 
        url="../data/AjaxService.jsp?method=SearchEmployees"  idField="id"
        sizeList="[5,10,20,50]" pageSize="10"
    >
        <div property="columns">
            <div type="indexcolumn" ></div>
            <div field="loginname" width="120" headerAlign="center" allowSort="true">员工帐号</div>    
            <div field="name" width="120" headerAlign="center" allowSort="true">姓名</div>                            
            <div field="gender" width="100" renderer="onGenderRenderer" align="center" headerAlign="center">性别</div>
            <div field="salary" width="100" allowSort="true">薪资</div>                                    
            <div field="age" width="100" allowSort="true">年龄</div>
            <div field="createtime" width="100" headerAlign="center" dateFormat="yyyy-MM-dd" allowSort="true">创建日期</div>                
        </div>
    </div>   
    
    <iframe id="exportIFrame" style="display:none;"></iframe>
    
    <!--导出Excel相关HTML-->
     <form id="excelForm"  action="JXLExample.jsp" method="post" target="excelIFrame">
        <input type="hidden" name="columns" id="excelData" />
    </form>
    <iframe id="excelIFrame" name="excelIFrame" style="display:none;"></iframe>



    <script type="text/javascript">
        mini.parse();
        
        var grid = mini.get("datagrid1");
        grid.load();
        
        //对"createtime"字段，进行降级排序
        grid.sortBy("createtime", "desc");

        function search() {
            var key = document.getElementById("key").value;
            grid.load({ key: key });
        }
        $("#key").bind("keydown", function (e) {
            if (e.keyCode == 13) {
                search();
            }
        });
        ///////////////////////////////////////////////////////
        var Genders = [{ id: 1, text: ‘男‘ }, { id: 2, text: ‘女‘}];
        function onGenderRenderer(e) {
            for (var i = 0, l = Genders.length; i < l; i++) {
                var g = Genders[i];
                if (g.id == e.value) return g.text;
            }
            return "";
        }

        function ExportExcel() {
            var columns = grid.getBottomColumns();
            
            function getColumns(columns) {
                columns = columns.clone();
                for (var i = columns.length - 1; i >= 0; i--) {
                    var column = columns[i];
                    if (!column.field) {
                        columns.removeAt(i);
                    } else {
                        var c = { header: column.header, field: column.field };
                        columns[i] = c;
                    }
                }
                return columns;
            }
            
            var columns = getColumns(columns);
            var json = mini.encode(columns);                        
            document.getElementById("excelData").value = json;
            var excelForm = document.getElementById("excelForm");
            excelForm.submit();            

        }
    </script>

    <div class="description">
        <h3>Description</h3>
        
    </div>
</body>
</html>

这里主要与导出相关的代码就是ExportExcel()这个JS方法，主要是将页面上的表头columns以json的形式通过excelForm 这个表单传给后台。

JAVA这里跟官方页面的代码有所不同，官方页面实现方式是.Net。

 <!--导出Excel相关HTML-->
     <form id="excelForm"  action="JXLExample.jsp" method="post" target="excelIFrame">
        <input type="hidden" name="columns" id="excelData" />
    </form>
    <iframe id="excelIFrame" name="excelIFrame" style="display:none;"></iframe>

这个form表单中的action填写为自己对应的JSP页面即可。

二、官方JAVA后台界面

<%@page import="java.io.OutputStream"%>
<%@page import="jxl.Workbook"%>
<%@page import="jxl.write.Label"%>
<%@page import="jxl.write.WritableSheet"%>
<%@page import="jxl.write.WritableWorkbook"%>
<%@page import="javax.print.attribute.standard.Finishings"%><%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" import="java.util.*,Test.*,java.lang.reflect.*"%>
<%         
    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");    
    
    excelWrite(request, response);
    
%>
<%!

public HashMap SearchEmployees(HttpServletRequest request, HttpServletResponse response) throws Exception
{     
    //查询条件
    String key = request.getParameter("key");
    //字段排序
    String sortField = request.getParameter("sortField");
    String sortOrder = request.getParameter("sortOrder");
    HashMap result = new Test.TestDB().SearchEmployees(key, 0, 10000, sortField, sortOrder);
    return result;
}

public void excelWrite(HttpServletRequest request, HttpServletResponse response) throws Exception
{    
    OutputStream out=response.getOutputStream();
    String fname = "grid";
    response.reset();//清空输出流
    
    response.setCharacterEncoding("UTF-8");//设置相应内容的编码格式
    fname = java.net.URLEncoder.encode(fname,"UTF-8");
    response.setHeader("Content-Disposition","attachment;filename="+new String(fname.getBytes("UTF-8"),"GBK")+".xls");
    response.setContentType("application/ms-excel");//定义输出类型
    String json = request.getParameter("columns");
    ArrayList rows = (ArrayList)Test.JSON.Decode(json);
    HashMap data = SearchEmployees(request, response);//需要的数据
       try {     
            // 获得开始时间     
           // long start = System.currentTimeMillis();             
            // 创建Excel工作薄     
            WritableWorkbook workbook = Workbook.createWorkbook(out);      
           // 添加第一个工作表并设置第一个Sheet的名字     
          WritableSheet sheet = workbook.createSheet("grid1", 0);     
            Label label;  
          //写出列名
            for(int i=0;i<rows.size();i++){      
                HashMap hm = (HashMap)rows.get(i);
                Iterator iterator = hm.keySet().iterator();                
                label = new Label(i,0,hm.get("header").toString());
                sheet.addCell(label);     
           }   
          //写出数据
            ArrayList list = (ArrayList)data.get("data");  
                for (int i = 1; i < list.size(); i++) {
                    HashMap hm1 = (HashMap)list.get(i);
                    for (int k = 1; k < hm1.size(); k++) {
                        for(int j=0;j<rows.size();j++){     
                            HashMap hm = (HashMap)rows.get(j);
                            String key =hm.get("field").toString();
                            String value=String.valueOf(hm1.get(key));
                            label = new Label(j,i,value);
                            sheet.addCell(label); 
                        }
                    }    
                }       
                
          // 写入数据     
                workbook.write();     
           // 关闭文件     
                workbook.close();  
                out.close();
          // long end = System.currentTimeMillis();     
          //System.out.println("----完成该操作共用的时间是:"+(end-start)/1000);     
       } catch (Exception e) {     
          // System.out.println("---出现异常---");     
           e.printStackTrace();     
       }     
}

%>

这里最主要需要修改的代码就是

ArrayList rows = (ArrayList)Test.JSON.Decode(json);

这里是对前台传过来的表头的json字符串转化为list列表。

前台传递过来的JSON字符串如下：

[{\"header\":\"\\n\\t\\t\\t\\t\\t\\t内容\\n\\t\\t\\t\\t\\t\",\"field\":\"FYXMC\"},{\"header\":\"\\n\\t\\t\\t\\t\\t\\t上一年度实际开支（元）\\n\\t\\t\\t\\t\\t\",\"field\":\"ZFY\"},{\"header\":\"\\n\\t\\t\\t\\t\\t\\t本年度预算（元）\\n\\t\\t\\t\\t\\t\",\"field\":\"ZFY\"},{\"header\":\"\\n\\t\\t\\t\\t\\t\\t内容说明\\n\\t\\t\\t\\t\\t\",\"field\":\"SM\"}]

JAVAminiUI试用版的文件结构如下：（JSONTEST.JAVA这个文件是我加的测试文件）

技术分享

Test.JSON.Decode()这个方法需要用到StringUtil.java和DateTransformer.java，将相关的三个文件都考到自己miniUI web项目下即可使用Test.JSON.Decode()这个方法。

public HashMap SearchEmployees(HttpServletRequest request, HttpServletResponse response) throws Exception
{   
　　。。。。。。
}

HashMap data = SearchEmployees(request, response);

以上这两行代码就是从自己的项目取数据并且做拼接。miniUI只是前段框架，所以excel导出还是需要经过后台取数。

只要取出的数据符合List<HashMap>的数据结构形式，就可以直接使用剩余其他代码，SearchEmployees方法相关的代码都可以不要。List<HashMap>的Map里存放的是一列数据的哈希集合。

三、本人的取数方法

import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.sql.RowSet;

import com.bl.platform.tools.json.JSONArray;
import com.bl.platform.tools.json.JSONException;
import com.bl.platform.tools.json.JSONObject;
import com.sdjxd.pms.platform.data.DbOper;


public class bmfy_zb {
    public static String nd = "";
    public static String btxbm = "";
    public static String txbm = "";
    public static String nr = "";
    public static String isLD = "";
    /**
     * 
     * @param ysbh 预算编号
     * @param btxbm 被填写部门
     * @param txbm 填写部门
     * @return JSON对象数组
     */
    public static JSONArray deptJSON_Array(String nd,String btxbm,String txbm,String nr,String isLD){
        JSONArray rows = new JSONArray();
        String flownodeid = "0";//2为归档，0为开始，由于数据有限，先用起始阶段的数据进行测试
        String txbmsql = "";
        String fyzgbmsql = "";
        if("2".equals(isLD)){//如果是领导
            txbmsql = "";
            fyzgbmsql = "";
        }else if("1".equals(isLD)){//如果是主管部门
            txbmsql = " AND TXBM = ‘"+txbm+"‘ ";
            fyzgbmsql = "AND FYZGBMMC = ‘"+txbm+"‘ ";
        }else if("3".equals(isLD)){//如果是普通部门
            txbmsql = "";
            fyzgbmsql = "";
        }
        String sql1 = "SELECT FYXID, FFXID, ZFY, FYXMC, SM FROM (SELECT SUM(YSFY) AS ZFY, FYXMC FROM (SELECT F.* FROM (SELECT E.* FROM (SELECT MAX(NODEINSTANCEID) AS NODEINSTANCEID, FLOWINSTANCEID FROM (SELECT * FROM JXD7_WF_NODEINSTANCE WHERE FLOWID = ‘B1E7FA2F-E857-4135-8009-47C3159FC9AE‘ ) GROUP BY FLOWINSTANCEID ) D LEFT JOIN JXD7_WF_NODEINSTANCE E ON D.FLOWINSTANCEID = E.FLOWINSTANCEID WHERE D.NODEINSTANCEID = E.NODEINSTANCEID AND E.FLOWNODEID = ‘"+flownodeid+"‘ ) A LEFT JOIN JXD7_WF_FORMINSTANCE B ON A.FLOWINSTANCEID = B.FLOWINSTANCEID LEFT JOIN BL_T_CB_NDBMFYYSBZB C ON B.FORMINSTANCEID = C.FORMINSTANCEID LEFT JOIN BL_T_CB_NDBMFYYSZXB F ON C.YSBH = F.YSBH WHERE 1 = 1 AND BTXBM = ‘" + btxbm +"‘" + txbmsql +" AND C.YSND = ‘"+nd+"‘ ) GROUP BY FYXMC ) G LEFT JOIN BL_T_CB_GSCMFYXB H ON G.FYXMC = H.FYXNR WHERE 1=1 "+fyzgbmsql;
        String sql2 = " UNION SELECT FYXID, FFXID, ZFY, FYXMC, SM FROM BL_T_CB_GGFYXB H LEFT JOIN (SELECT SUM(YSFY) AS ZFY, FYXMC FROM (SELECT F.* FROM (SELECT E.* FROM (SELECT MAX(NODEINSTANCEID) AS NODEINSTANCEID, FLOWINSTANCEID FROM (SELECT * FROM JXD7_WF_NODEINSTANCE WHERE FLOWID = ‘B1E7FA2F-E857-4135-8009-47C3159FC9AE‘ ) GROUP BY FLOWINSTANCEID ) D LEFT JOIN JXD7_WF_NODEINSTANCE E ON D.FLOWINSTANCEID = E.FLOWINSTANCEID WHERE D.NODEINSTANCEID = E.NODEINSTANCEID AND E.FLOWNODEID = ‘"+flownodeid+"‘ ) A LEFT JOIN JXD7_WF_FORMINSTANCE B ON A.FLOWINSTANCEID = B.FLOWINSTANCEID LEFT JOIN BL_T_CB_NDBMFYYSBZB C ON B.FORMINSTANCEID = C.FORMINSTANCEID LEFT JOIN BL_T_CB_NDBMFYYSZXB F ON C.YSBH = F.YSBH WHERE 1 = 1 AND BTXBM = ‘"+btxbm +"‘"+ txbmsql+" AND C.YSND = ‘"+nd+"‘ ) GROUP BY FYXMC ORDER BY FYXMC ) G ON G.FYXMC = H.FYXNR ";
        String sql = "";
        if(!"".equals(nr)){
            sql1 += " AND FYXMC LIKE ‘%"+nr+"%‘";
            sql2 += " AND FYXMC LIKE ‘%"+nr+"%‘";
        }
        if("公司层面费用".equals(btxbm)){
            sql = sql1 + " ORDER BY FYXMC ";
        }else{
            sql = "SELECT * FROM (" +sql1 + sql2 + ") ORDER BY FYXMC ";
        }
        sql = "SELECT * FROM (" + sql + ") WHERE FYXID IS NOT NULL";//过滤无效数据
        if(btxbm==""){
            return rows;
        }
        try {
            RowSet rs = DbOper.executeQuery(sql);
            while(rs.next()){
                JSONObject row = new JSONObject();
                for (int i = 1; i <= rs.getMetaData().getColumnCount(); i++) {
                    try {
                        row.put(rs.getMetaData().getColumnName(i).toUpperCase(),
                                rs.getObject(i));
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
                rows.put(row);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return rows;
    }
    
    /**
     * 返回JSON字符串
     * @param nd
     * @param btxbm
     * @param txbm
     * @param nr
     * @param isLD
     * @return
     */
    public static String deptJSON(String nd1,String btxbm1,String txbm1,String nr1,String isLD1){
        nd = nd1;//保存查询条件
        btxbm = btxbm1;
        txbm = txbm1;
        nr = nr1;
        isLD = isLD1;
        return deptJSON_Array(nd1,btxbm1,txbm1,nr1,isLD1).toString();
    }
    /** 
        * 将json对象解析成Map对象 <li> 
        * json格式：{"name":"admin","retries":"3fff","testname" 
        * :"ddd","testretries":"fffffffff"} 
        */  
       private static HashMap<String, String> JSONOBJECTtoHashMap(JSONObject object)  
       {  
           HashMap<String, String> data = new HashMap<String, String>();  
           // 将json字符串转换成jsonObject  
           JSONObject jsonObject = object; 
           Iterator<String> it = jsonObject.keys();  
           // 遍历jsonObject数据，添加到Map对象  
           try {
               while (it.hasNext())  
               {  
                       String key = it.next();  
                    String value = jsonObject.getString(key);           
                   data.put(key, value);  
               }  
           } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }  
           return data;  
       }  
     
      /**
       * 将查询结果转化成ListMap供导出EXCEL使用
       * @return
       */
     public static List<HashMap> toListMap(){
         List<HashMap> list = new ArrayList<HashMap>();
         JSONArray rows = deptJSON_Array(nd,btxbm,txbm,nr,isLD);
         try {
             for(int i=0;i<rows.length();i++){
                 HashMap<String, String> map = JSONOBJECTtoHashMap((JSONObject) rows.get(i));
                 list.add(map);
             }
         } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
         return list;
     }
}

将deptJSON_Array和deptJSON分开是因为，在网上没有找到json字符串转化为json对象的包，所以就拆开来，导出的时候使用deptJSON_Array方法可以根据保存的查询条件重新查询，直接输出JSON对象，然后使用JSONOBJECTtoHashMap方法转成hashMap。

之后就符合一列数据一个Map这个数据结构，然后用toListMap方法加到List中即可。

相应的JXLEXAMPLE.JSP中相关代码要改一下：

ArrayList list = (ArrayList)data.get("data");

改成

List<HashMap> list = bmfy_zb.toListMap();

一下代码可以删除

public HashMap SearchEmployees(HttpServletRequest request, HttpServletResponse response) throws Exception
{   
　　。。。。。。
}
HashMap data = SearchEmployees(request, response);

导出结果如下：

技术分享

四、结语

由于涉及到的东西有点杂，怕忘记了所以做以上记录。

转载请注明出处：http://www.cnblogs.com/CryOnMyShoulder/p/7760029.html

miniUI ExcelExport导出JAVA实现

标签：orm json.js except tool none ajax target ddc writable

原文地址：http://www.cnblogs.com/CryOnMyShoulder/p/7760029.html

踩

(0)

评论一句话评论（0）

分享档案

更多>

2021年07月29日 (22)
2021年07月28日 (40)
2021年07月27日 (32)
2021年07月26日 (79)
2021年07月23日 (29)
2021年07月22日 (30)
2021年07月21日 (42)
2021年07月20日 (16)
2021年07月19日 (90)
2021年07月16日 (35)

周排行