HAP自定义Excel导出

• 添加自定义导出按钮

!--自定义导出-->
        <span class="btn btn-primary " style="float:left;margin-right:5px;"  data-bind="click:exportExcelCustom">
            <i class="fa fa-file-excel-o" style="marginright:3px;"></i><@spring.message "自定义导出"/></span>

• 扩展 viewModel 对象并添加 exportExcelCustom() 方法

<script type="text/javascript">
    var viewModel = Hap.createGridViewModel("#grid", {
        orgTypeData: orgTypeData,
        /*自定义导出*/
        exportExcelCustom: function() {
            var exportConfig = {};
            var columns = [];
            var index = 0;
            var grid = $("#grid").data("kendoGrid"); //获取kendoGrid对象
            console.log(grid)
            for (var i = 0; i < grid.columns.length; i++) { //遍历所有字段
                if (grid.columns[i].field != null) {
                    var columnInfo = {};
                    columnInfo["name"] = grid.columns[i].field; //获取字段name
                    columnInfo["title"] = grid.columns[i].title; //获取字段实际显示标题
                    columnInfo["width"] = grid.columns[i].width; //获取字段显示宽度
                    var align = $('tbody').find('tr')[0].getElementsByTagName('td')
                        [i].style.textAlign; //获取对其⽅方式
                    if (align != null || align != '') {
                        columnInfo["align"] = align;
                    }
                    if (dataSource.options.schema.model.fields[grid.columns[i].field] != null) {//获取字段类型
                        columnInfo["type"] =
                            dataSource.options.schema.model.fields[grid.columns[i].field].type;
                        console.log("获取的数据类型："+dataSource.options.schema.model.fields[grid.columns[i].field].type)
                    }
                    columns[index] = columnInfo; //将数据导⼊入columns中
                    console.log("插入的数据："+columnInfo)
                    index++;
                }
            }
            exportConfig["columnsInfo"] = columns; //将columns数据导⼊入exportConfig中
            exportConfig["param"] = Hap.prepareQueryParameter(this.model.toJSON()); //获取⽹网⻚页限制条件
            exportConfig["fileName"] = "OrganizationAccess"; //设置⽂文件名
            var $inputImg = $('<input>').attr({name: "config", value:
                    kendo.stringify(exportConfig)}); //将⻚页⾯面信息传到$inputImg中，定义input，并设置name和value属性
            var
                $inputToken=$('<input>').attr({name:"${_csrf.parameterName}",value:"${_csrf.token}",
                    type:"hidden"}); //传⼊入token，以实现跨域访问，定义input
            var $form = $("<form>"); //定义form
            $form.attr({ //设置form的target，method，action属性
                target: '_self',
                method: 'post',
                action: '${base.contextPath}/wht/ora/20796/org/access/export/excel/custom'
            }).append($inputImg); //在form中添加$inputImg，添加input域
            $form.append($inputToken); //在form中添加$inputToken
            $form.id='smbForm'; //设置form的id
            $("#batchDiv").empty().append($form); //在batchDiv中添加该form
            $($form).submit(); //提交form
            $("#batchDiv").empty(); //置空batchDiv
        },
    });

</script>

• 给字段添加类型

 model: {
                id: "accessId",
                fields: {
                    accessId:{
                        type:"int"
                    },
                    accessName:{
                        type:"string"
                    },
                    orgType:{
                        validation: {
                            required: true
                        },
                        defaultValue: "ORG",
                    },
                    description:{
                        validation: {
                            required: true
                        },
                    },
                    roleId:{
                        type:"int"
                    },
                    userId:{
                        type:"int"
                    },
                    startDate:{
                        type:"date"
                    },
                    endDate:{
                        type:"date"
                    }

                }
            }

• 在body最后面添加一个DIV

  <div id="batchDiv"></div>

• 在控制器中添加处理逻辑

  /*****自定义导出********/
    @Autowired
    private ObjectMapper objectMapper;
    @Autowired
    private IExportService excelService;

    @RequestMapping(value = "/wht/ora/20796/org/access/export/excel/custom")
    public void exportExcelCustom(HttpServletRequest request, @RequestParam String
            config,
                                  HttpServletResponse httpServletResponse) throws
            IOException {
        IRequest requestContext = createRequestContext(request);
        JavaType type =
                objectMapper.getTypeFactory().constructParametrizedType(ExportConfig.class,
                        ExportConfig.class, Ora20796OrgAccess.class, ColumnInfo.class);
        ExportConfig<Ora20796OrgAccess, ColumnInfo> exportConfig =
                objectMapper.readValue(config, type);
        excelService.exportAndDownloadExcel("wht.ora20796.mapper.Ora20796OrgAccessMapper.selectOrgAccessByOrder", exportConfig, request, httpServletResponse,
                requestContext);
    }

    /** ----自定义导出结束----**/

可能出现的问题：

1. 导出文件打不开
解决：注意控制类中的："wht.ora20796.mapper.Ora20796OrgAccessMapper.selectOrgAccessByOrder"路径是否正确
我这里的selectOrgAccessByOrder()是之前写好的，你要看看你有没有写

2. 点击“自定义导出"按钮，没有反应
解决： 
 1. 可能你没有触发到exportExcelCustom()这个方法
 2. 没有在body最后面添加一个div  :  <div id="batchDiv"></div>
3. 没有对字段的类型进行说明：（看本文第3点)