jxls实现导入Excel数据

SSM项目导入Excel,话不多说,直接干货

1:添加maven相关依赖　

<dependency>
                <groupId>org.jxls</groupId>
                <artifactId>jxls-reader</artifactId>
                <version>2.0.2</version>
</dependency>
<dependency>
                <groupId>org.jxls</groupId>
                <artifactId>jxls</artifactId>
                <version>2.4.6</version>
</dependency>

2:ExcelHead类:存放Excel表的表头信息,导入时要完全匹配表头信息才可导入

public class ExcelHead {
    //读取表头
    private String head;
    //节点 这里要导入的Excel的表头必须和这儿完全匹配
    private String point = "节点编号*,节点名称*,节点描述,节点类别,仓库编号*,仓库名称*,是否自动接收*,备注";
    public String getHead() {
        return head;
    }

    public void setHead(String head) {
        if (StringUtil.isEmpty(this.head)) {
            this.head = head.trim();
        } else {
            this.head = String.format("%s,%s", this.head, head.trim());
        }
    }

    public String getPoint() {
        return point;
    }

    public void setPoint(String point) {
        this.point = point;
    }

}

point-body.xml文件.这里存放的是表体信息

<?xml version="1.0" encoding="UTF-8"?>
<workbook>
    <worksheet idx="0">
        <!-- 表头开始至结束行 -->
        <section startRow="0" endRow="0"/>
        <!-- 开始循环读取文件数据，配置开始行，items映射的list var映射的bean varType 类路径
            startRow：开始循环的行数
            endRow-startRow：循环体的大小，0代表一行，依次论推
            每循环一次，判断是否结束，不结束继续循环，直至结束
        -->
        <loop startRow="1" endRow="1" items="pointList" var="sku"
              varType="com.eglsc.ams.domain.vo.PointVo">
            <!-- 循环开始行 -->
            <section startRow="1" endRow="1">
                <!-- 节点编号 -->
                <mapping row="1" col="0" nullAllowed="true">
                    sku.pointNo
                </mapping>
                <!-- 节点名称 -->
                <mapping row="1" col="1" nullAllowed="true">
                    sku.pointName
                </mapping>
                <!-- 节点描述 -->
                <mapping row="1" col="2" nullAllowed="true">
                    sku.pointDescription
                </mapping>
                <!-- 节点类别 -->
                <mapping row="1" col="3" nullAllowed="true">
                    sku.pointCategory
                </mapping>
                <!-- 仓库编号 -->
                <mapping row="1" col="4" nullAllowed="true">
                    sku.siteNo
                </mapping>
                <!-- 仓库名称 -->
                <mapping row="1" col="5" nullAllowed="true">
                    sku.siteName
                </mapping>
                <!-- 是否自动接收 -->
                <mapping row="1" col="6" nullAllowed="true">
                    sku.automaticFlag
                </mapping>
                <!-- 备注 -->
                <mapping row="1" col="7" nullAllowed="true">
                    sku.remark
                </mapping>
            </section>
            <!-- 结束条件配置 -->
            <loopbreakcondition>
                <rowcheck offset="0">
                    <!-- 空白结束不填 -->
                    <cellcheck offset="0"></cellcheck>
                </rowcheck>
            </loopbreakcondition>
        </loop>
    </worksheet>
</workbook>

point-head.xml文件.这里配置的是表头信息

<?xml version="1.0" encoding="UTF-8"?>
<workbook>
    <worksheet idx="0">
        <!-- 表头开始至结束行 -->
        <section startRow="0" endRow="0">
            <!-- 节点编号 -->
            <mapping row="0" col="0" nullAllowed="true">
                excelHead.head
            </mapping>
            <!-- 节点名称 -->
            <mapping row="0" col="1" nullAllowed="true">
                excelHead.head
            </mapping>
            <!-- 节点描述 -->
            <mapping row="0" col="2" nullAllowed="true">
                excelHead.head
            </mapping>
            <!-- 节点类别 -->
            <mapping row="0" col="3" nullAllowed="true">
                excelHead.head
            </mapping>
            <!-- 仓库编号 -->
            <mapping row="0" col="4" nullAllowed="true">
                excelHead.head
            </mapping>
            <!-- 仓库名称 -->
            <mapping row="0" col="5" nullAllowed="true">
                excelHead.head
            </mapping>
            <!-- 是否自动接收 -->
            <mapping row="0" col="6" nullAllowed="true">
                excelHead.head
            </mapping>
            <!--备注-->
            <mapping row="0" col="7" nullAllowed="true">
                excelHead.head
            </mapping>
        </section>
    </worksheet>
</workbook>

导入代码:

    @RequestMapping(value = "/import", method = RequestMethod.POST)
　　　　@Response
    @Transactional
    public Response importExcel(@RequestParam(required = true) MultipartFile file, HttpServletRequest request) {
        String fileName = file.getOriginalFilename().toLowerCase();
        if(!fileName.endsWith(".xls") && !fileName.endsWith(".xlsx")){
            throw new ApplicationException("请上传Excel文件");
        }
        //获取文件
        CommonsMultipartFile commonsMultipartFile = (CommonsMultipartFile)file;
        //获取xml文件头配置(我的xml文件是放在/template/import/point目录下的)
        String xmlConfigPath = String.format("%s%s", request.getServletContext().getRealPath("/"), "/template/import/point/");
        String xmlConfigName = String.format("%s%s", xmlConfigPath, "point-head.xml");
        Map<String,Object> beans = new HashMap<>();
        ExcelHead excelHead = new ExcelHead();
        beans.put("excelHead",excelHead);
        //解析文件头
        this.parseExcelService.parseExcel(xmlConfigName,commonsMultipartFile,beans);
        if(!excelHead.getPoint().equals(excelHead.getHead())){
            throw new RuntimeException("模板错误");
        }
      　//获取文件体信息
        xmlConfigName = String.format("%s%s", xmlConfigPath, "point-body.xml");
        List<PointVo> pointVoList = new ArrayList<>();
        beans.clear();
        beans.put("pointList",pointVoList);
        //解析文件体
        parseExcelService.parseExcel(xmlConfigName,commonsMultipartFile,beans);
        this.pointService.importExcel(pointVoList);
        return Response.success("导入成功");
    }

Response类携带着操作结束后的信息,供前端人员调用

执行到this.pointService.importExcel(pointVoList)这段代码意味着要导入的Excel中的数据已经放到pointList中了,执行pointService中的方法把数据批量导入进数据库中就完成了.

解析Excel工具类:ParseExcelService

public class ParseExcelService {

    /**
     * 解析Excel
     *
     * @param xmlConfigName        xml配置（字段和Excel单元格的映射）
     * @param commonsMultipartFile 上传的文件
     * @param beans                解析后的数据
     */
    public void parseExcel(String xmlConfigName, CommonsMultipartFile commonsMultipartFile, Map<String, Object> beans) {
        InputStream inputStream = null;
        FileInputStream xmlConfig = null;
        InputStream inputXML = null;
        InputStream inputXLS = null;
        try {
            //上传的文件流
            inputStream = commonsMultipartFile.getInputStream();
            //xml配置的文件流
            xmlConfig = new FileInputStream(xmlConfigName);
            //执行解析
            inputXML = new BufferedInputStream(xmlConfig);
            XLSReader mainReader = ReaderBuilder.buildFromXML(inputXML);
            inputXLS = new BufferedInputStream(inputStream);
            mainReader.read(inputXLS, beans);
        } catch (XLSDataReadException e) {
            logger.error("数据转换异常:", e);
            throw new ApplicationException("数据转换异常");
        } catch (InvalidFormatException e) {
            logger.error("无效格式异常:", e);
            throw new ApplicationException("无效格式异常");
        } catch (FileNotFoundException e) {
            logger.error("文件未找到:", e);
            throw new ApplicationException("文件未找到");
        } catch (SAXException e) {
            logger.error("SAX解析异常:", e);
            throw new ApplicationException("SAX解析异常");
        } catch (IOException e) {
            logger.error("IO流异常:", e);
            throw new ApplicationException("IO流异常");
        } finally {
            try {
                if (inputXLS != null)
                    inputXLS.close();
                if (inputXML != null)
                    inputXML.close();
                if (xmlConfig != null)
                    xmlConfig.close();
                if (inputStream != null)
                    inputStream.close();
            } catch (IOException e) {
                logger.error("parse excel error", e);
            }
        }
    }

}