java導入Excel表格數據

首先導入Excel數據需要幾樣東西

第一需要兩個依賴包，這里直接是在pom注入依賴

<!--excel-->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.10.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.9</version>
        </dependency>

第二就是需要一個工具類，就和分頁的工具類一個性質，這里就不貼出來了太長 。百度搜索 “ExcelUtil”

代碼中用到的js文件 jquery-3.1.1.min.js、layer.js

下面開始貼js代碼

          //h5的話，寫一個文件域就好了  
　　　　　　//上傳Excel文件
　　　　　　　　uploadFile() {
                var file = $("#upload").val();
                file = file.substring(file.lastIndexOf('.'), file.length);
                if (file == '') {
                    layer.open({
                        content: '上傳文件不能為空！'
                        , skin: 'msg'
                        , time: 2 //2秒后自動關閉
                    });
                } else if (file != '.xlsx' && file != '.xls') {
                    layer.open({
                        content: '請選擇正確的excel類型文件！'
                        , skin: 'msg'
                        , time: 2 //2秒后自動關閉
                    });
                } else {
                    this.ajaxFileUpload();
                }
            },
            ajaxFileUpload() {
                var formData = new FormData();
                formData.append("file", document.getElementById("upload").files[0]);
                $.ajax({
                    url: "${ctx}/bookcase/InputExcel",
                    type: "POST",
                    async: true,
                    data: formData,
                    processData: false,
                    contentType: false,
                    beforeSend: function () {
                        layer.open({
                            type: 2
                            , content: '文件上傳中，請稍候'
                        });
                    },
                    success: function (data) {
                        layer.closeAll();
                        data = JSON.parse(data);
                        if (data.state == 200) {
                            layer.open({
                                content: data.message
                                , skin: 'msg'
                                , time: 1 //2秒后自動關閉
                            });
                            window.location.reload();
                        } else {
                            layer.open({
                                content: data.message
                                , skin: 'msg'
                                , time: 2 //2秒后自動關閉
                            });
                        }
                    }
                });
            }
        },

到這里頁面的的操作就差不多了，下面是java的操作

@RequestMapping("InputExcel")
    @ResponseBody
    public ResultEntity InputExcel(@RequestParam("file") MultipartFile file, HttpServletRequest request) {
        ResultEntity result = new ResultEntity();
        if (!file.isEmpty()) {
            try {
                //獲取原始的文件名
                String originalFilename = file.getOriginalFilename();
                String fileType = originalFilename.substring(originalFilename.lastIndexOf(".") + 1, originalFilename.length());
                //默認從第一行開始讀取
                Integer startRows = 1;
                //獲取輸入流
                InputStream is = file.getInputStream();
                List<DoorAntRel> bindingList = new ArrayList<>();
                List<Bookcase> bookcaseList = new ArrayList<>();
                List<String[]> strings = ExcelUtil.readData(fileType, startRows, true, is);//這里使用輸入流把數據拿到
                //遍歷Excel表每一行的數據
                for (String[] str : strings) {//這里比較特殊，肯定有更簡便的辦法，暫時我就只有這個水平、、、尷尬
                    Bookcase bookcase = new Bookcase();
                    DoorAntRel doorAntRel = new DoorAntRel();
                    bookcase.setName(str[1]);
                    bookcase.setType(str[2]);
                    bookcase.setCom(Integer.parseInt(str[3]));
                    doorAntRel.setDoorName(str[4]);
                    doorAntRel.setDoorNo(Integer.parseInt(str[5]));
                    doorAntRel.setAntennaNo(Integer.parseInt(str[6]));
                    doorAntRel.setReadWriterId(Integer.parseInt(str[7]));
                    doorAntRel.setBookcaseId(Integer.parseInt(str[8]));
                    doorAntRel.setBadFlag(Integer.parseInt(str[9]));
                    doorAntRel.setDoorSlot(Integer.parseInt(str[10]));
                    bindingList.add(doorAntRel);
                    bookcaseList.add(bookcase);
                }
                boolean bookState = bookcaseService.insertOrUpdateBatch(bookcaseList);
                boolean doorState = doorAntRelService.insertOrUpdateBatch(bindingList);
                if(bookState){
                    if(doorState){
                        result.setState(HttpCode.SUCCESS);
                        result.setMessage("上傳文件成功！");
                        return result;
                    }
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        result.setState(HttpCode.FAILED);
        result.setMessage("上傳文件失敗！");
        return result;
    }

到這里差不多導入功能就差不多了，包括業務層、數據訪問的接口我就不寫了，也就是一條insert的事情