JXL导入/导出

近两年技术没有过细化总结，突然心血来潮，随手来总结一些问题，废话不多说，切入正题。

jxl导入导出这里主要用的EXTJS+Sh

前端：创建按键，调用触发事件，根据触发事件中url找到控制层相对应的路径

按键

　　2.js

/*
         * 导入 
         */
        importItem : function() {
            Ext.QuickTips.init();
            Ext.onReady(function() {
                var form = new Ext.form.FormPanel({
                    baseCls : 'x-plain',
                    labelWidth : 80,
                    url : cfg.cxt +'/eplantrain/manage/upload/excel.sj',
                    fileUpload : true,
                    defaultType : 'textfield',
                    items : [ {
                        xtype: 'fileuploadfield',
                        name: 'file',
                        fieldLabel: '&nbsp&nbsp&nbsp文件名',
                        labelWidth: 50,
                        msgTarget: 'side',
                        allowBlank: false,
                        anchor: '90%',
                        buttonText: '选择Excel文件'
                    },{
                        xtype: 'label',
                        text: '(请选择Excel导入，注意录入的字段格式)',
                        style:{
                            marginLeft:'10px'
                        }
                    } ]
                });
                var win = new Ext.Window({
                    title : '上传Excel',
                    width : 400,
                    height : 130,
                    layout : 'fit',
                    plain : true,
                    bodyStyle : 'padding:5px;',
                    buttonAlign : 'center',
                    items : form,
                    buttons : [ {
                        text : '导入',
                        handler : function() {
                            if (form.form.isValid()) {
                                Ext.MessageBox.show({
                                    title : '请等待',
                                    msg : '导入中...',
                                    progressText : '',
                                    width : 300,
                                    progress : true,
                                    closable : false,
                                    animEl : 'loding'
                                });
                                form.getForm().submit({
                                    success : function(form, action) {
                                        listView.queryResItem();
                                        Ext.Msg.alert("提示",action.result.msg);
                                        win.hide();
                                    },
                                    failure : function(form, action) {
                                        Ext.Msg.alert('警告',"Excel导入失败！");
                                        win.hide();
                                    }
                                });
                            }
                        }
                    }, {
                        text : '关闭',
                        handler : function() {
                            win.hide();
                        }
                    } ]
                });
                win.show();
            });

        },
         /*导出文件*/
        exportFile: function () {
            var sm = grid.getSelectionModel();
            if (sm.getCount() == 0) {
                Ext.Mytip.msg('提示', '您尚未选择要导出的数据！');
                return;
            }
            var ids = [];
            sm.each(function(r) {
                ids.push(r.data.id);
            });

//            Ext.Msg.confirm('请确认',
//                    '<span style="color:red"><b>提示：</b>确定导出吗？</span>',
//                    function(btn,text) {
//                        if (btn == 'yes') {
//            
//                        Ext.Ajax.request({
//                            url :cfg.cxt + "/eplantrain/manage/underwrite_export.sj",
//                                
//                                success : function(response) {
//                                    
//                                //window.location.href = cfg.cxt + "/eplantrain/manage/exports.sj";
//                                var rt = Ext.decode(response.responseText);
//                                alert(111+response.responseText.success==true+rt);
//                                if (rt.success) {
//                                    listView.queryResItem();
//                                    Ext.Mytip.msg('提示', '导出成功！');
//                                    } else {
//                                        Ext.Mytip.msg('提示', rt.msg);
//                                    }
//                                },
//                                failure : safetys.ajaxError,
//                                params : {
//                                    "ids" : ids.join(',')
//                                }
//                            });
//                        }
//                    });
     window.location.href = cfg.cxt + "/eplantrain/manage/exports.sj?ids="+ids;
        },

后台代码

//导出Excel****************************************
@SuppressWarnings("deprecation")
@RequestMapping("/exports")
@ResponseBody
public Msg exportFile(HttpServletResponse response,String ids) throws Exception {

Assert.isTrue(StringUtils.isNotBlank(ids), "参数错误！");
// 1.文件下载响应头
response.setCharacterEncoding("UTF-8");
response.addHeader("Content-Disposition", "attachment;filename=" + new String(("导出Excel名").getBytes("gb2312"), "ISO-8859-1") + ".xls");

//response.setHeader("Content-Disposition", "attachment;filename=" + new String((edTemplate.getTemplateName() + "导入模板").getBytes(), "ISO-8859-1") + ".xls");

// 2.响应到浏览器
WritableWorkbook workbook = Workbook.createWorkbook(response.getOutputStream());
// 创建工作簿sheet
WritableSheet sheet = workbook.createSheet("工作簿名", 0);

//设置字体;
WritableFont font2 = new WritableFont(WritableFont.ARIAL,14,WritableFont.BOLD,false,UnderlineStyle.NO_UNDERLINE,Colour.BLUE);
WritableCellFormat cellFormat1 = new WritableCellFormat(font2);
//设置背景颜色;
cellFormat1.setBackground(Colour.PINK);
//设置边框;
cellFormat1.setBorder(Border.ALL, BorderLineStyle.DASH_DOT);
//设置自动换行;
cellFormat1.setWrap(true);
//设置文字居中对齐方式;
cellFormat1.setAlignment(Alignment.CENTRE);
//设置垂直居中;
cellFormat1.setVerticalAlignment(VerticalAlignment.CENTRE);
// 3.设置column名（标题目录，根据自己数据库表字段命名）
String[] ts ={"法规或文件名称","制定机关","文号","发布时间","法规分类","层级","最近修订时间","状态","法规或文件电子档"};
Label label=null;
for(int i=0;i<ts.length;i++){
//x,y,第一行的列名
label=new Label(i,0,ts[i],cellFormat1);
//7：添加单元格
sheet.addCell(label);
}
// 4.把数据填充到工作簿中调用service调用查询数据库
List<ZZcfg> list = zzcfgService.findz(ids);

try{
for (int i = 0, j = 1; i < list.size(); i++, j++) {
ZZcfg z = list.get(i);
//System.out.println(z);
//设置列宽
sheet.setColumnView(i, 16);
//重新设置部分列宽
sheet.setColumnView(3, 14);
sheet.setColumnView(6, 14);
sheet.setColumnView(7, 14);
//设置行高
sheet.setRowView(i, 350);
//设置字体的attribute
WritableFont font1=new WritableFont(WritableFont.createFont("楷体 _GB2312"), 12, WritableFont.NO_BOLD);
WritableCellFormat format1=new WritableCellFormat(font1);

sheet.addCell(new Label(0, j, z.getzName(),format1));
sheet.addCell(new Label(1, j, z.getForOrg(),format1));
sheet.addCell(new Label(2, j, z.gettNumber(),format1));

String applydate=z.getReleTime().toLocaleString().substring(0,9);
sheet.addCell(new Label(3, j, applydate,format1));
sheet.addCell(new Label(4, j, z.getFgfl(),format1));
sheet.addCell(new Label(5, j, z.getOrderNo(),format1));
String applydateq=z.getLastTime().toLocaleString().substring(0,9);
sheet.addCell(new Label(6, j, applydateq,format1));
sheet.addCell(new Label(7, j, z.getzStatus().toString(),format1));
sheet.addCell(new Label(8, j, z.getTextField(),format1));

}
}catch (Exception e){
e.printStackTrace();
}

// 5.写入数据
workbook.write();
// 6.关闭资源
workbook.close();
return new Msg();

}
//导入Excel****************************************
@RequestMapping("upload/excel")
public void importExcelPapaers(HttpServletRequest request, HttpServletResponse response, @RequestParam MultipartFile file) throws IOException,
JSONException {

JSONObject jo = new JSONObject();
response.setContentType("text/html;charset=utf-8");
if (file.isEmpty()) {
jo.put("success", true);
jo.put("msg", "导入失败，文件不能为空！");
response.getWriter().print(jo.toString());
} else {
if ("application/vnd.ms-excel".equals(file.getContentType().toString())) {
//创建一个集合
List<ZZcfg> list = new ArrayList<ZZcfg>();
// 获取Excel对象
Workbook book;
try {
book = Workbook.getWorkbook(file.getInputStream());
// 获取Excel第一个选项卡对象
Sheet sheet = book.getSheet(0);
// 遍历选项卡，第一行是表头，所以索引数-1
for (int i = 0; i < sheet.getRows() - 1; i++) {
ZZcfg zz = new ZZcfg();
// 获取第i+1行单元格对象
zz.setzName(sheet.getCell(0,i+1).getContents());
zz.setForOrg(sheet.getCell(1,i+1).getContents());
zz.settNumber(sheet.getCell(2,i+1).getContents());
//时间格式的转换
try {
zz.setReleTime(new SimpleDateFormat("yyyy-MM-dd").parse(sheet.getCell(3,i+1).getContents()));
zz.setLastTime(new SimpleDateFormat("yyyy-MM-dd"). parse(sheet.getCell(6,i+1).getContents()));
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
zz.setFgfl(sheet.getCell(4,i+1).getContents());
zz.setOrderNo(sheet.getCell(5,i+1).getContents());
zz.setzStatus(sheet.getCell(7,i+1).getContents());
zz.setTextField(sheet.getCell(8,i+1).getContents());
list.add(zz);

}
for (int i = 0; i < list.size(); i++) {
zcfgService.save(list.get(i));
}
} catch (BiffException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
jo.put("success", true);
jo.put("msg", "导入成功！");
response.getWriter().print(jo.toString());
} else {
jo.put("success", true);
jo.put("msg", "导入失败！");
response.getWriter().print(jo.toString());
}
}

}

Impl

/新增
    @Override
    public ZZcfg save(ZZcfg entity) {
        this.merge(entity);
        return entity; 
    }
@Override
    public List<ZZcfg> findz(String ids) {

        
        ArrayList<ZZcfg> l = new ArrayList<ZZcfg>();
        if(ids.contains(",")){
        String[] tIds = StringUtils.split(ids,",");        
        for (int i = 0; i < tIds.length; i++) {    
                String id = StringUtils.trim(tIds[i]);
                ZZcfg pc = this.get(Long.valueOf(id));
                l.add(pc);
            }
        }else{
            ZZcfg ac = this.get(Long.parseLong(ids));
            l.add(ac);
        }
        for (int i = 0; i < l.size(); i++) {
            String a = l.get(i).getzName();
            
        }
        return l;
    }

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