使用Java POI解析EXcel表中大量數據，要求將解析數據存放到臨時表............................

初入社會，剛剛工作，代碼寫得很low，請多多包涵。

一：

public interface ProjectInfoMapper extends Mapper<ProjectInfo> {
    //讀取Excel數據保存到臨時表
    void save(ProjectInfo projectInfo);
    //創建臨時表
    void  createTable(@Param("tableName") String tableName);
    //查詢所有臨時表數據
    List<ProjectInfo> findAll();
    //臨時表數據導入到真實表
    void export(ProjectInfo projectInfo);

}

二:

<mapper namespace="com.zhunda.dao.ProjectInfoMapper">

    <insert id="save" parameterType="com.zhunda.pojo.ProjectInfo">
        insert  into  tmp_table2(id,totalMoney,works,realityDate,remitMoney,office,auditDate,projectGroup)
         values (#{id},#{totalMoney},#{works},#{realityDate},#{remitMoney},#{office},#{auditDate},#{projectGroup})
    </insert>

    <select id="findAll" resultType="com.zhunda.pojo.ProjectInfo">
        select  * from tmp_table2;
    </select>

    <insert id="createTable" parameterType="String">
        CREATE TEMPORARY TABLE ${tableName}(
      id VARCHAR(25) NOT NULL,
      totalMoney VARCHAR(25)  NOT NULL,
      works VARCHAR(25) NOT NULL,
      realityDate VARCHAR(25)  NOT NULL,
      remitMoney VARCHAR(25) NOT NULL,
      office VARCHAR(25)  NOT NULL,
      auditDate VARCHAR(25)  NOT NULL,
      projectgroup VARCHAR(25) NOT NULL
        )
    </insert>

    <insert id="export" parameterType="com.zhunda.pojo.ProjectInfo">
        insert  into  projectinfo(id,total_Money,works,reality_Date,remit_Money,office,audit_Date,project_Group)
         values (#{id},#{totalMoney},#{works},#{realityDate},#{remitMoney},#{office},#{auditDate},#{projectGroup})
    </insert>

<mapper>

三：

/**
     * 
     * @param s 桌面上Excel文件名,只能是後綴.xlsx
     * @throws IOException
     */
        public  void OneSheetCheck(String s) throws IOException{
            // 獲取桌面路徑
            FileSystemView fsv = FileSystemView.getFileSystemView();
            String desktop = fsv.getHomeDirectory().getPath();
            String filePath = desktop +"\\"+s;
            System.out.println(filePath);
            
            FileInputStream fileInputStream = new FileInputStream(filePath);
            BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInputStream);

            int count=1;
            Map<String,List> map=new HashMap<String,List>();

            XSSFWorkbook workbook =new XSSFWorkbook(bufferedInputStream);
            //XSSFSheet sheet = workbook.getSheet("Test");
            XSSFSheet sheet = workbook.getSheetAt(0);
            //int numberOfSheets = workbook.getNumberOfSheets();
            int lastRowIndex = sheet.getLastRowNum();
            System.out.println("總共多少行:"+lastRowIndex);

            //可遍歷一張表中所有工作簿
      /*  for (int a=0;a<numberOfSheets;a++) {
            XSSFSheet sheet = workbook.getSheetAt(a);
            int lastRowIndex = sheet.getLastRowNum();
            System.out.println("總共多少行:"+lastRowIndex);
        }*/
            //創建臨時表
            System.out.println("===========創建臨時表================");
           projectInfoMapper.createTable("tmp_table2");

            //分析Excel表
            analyzerExcel(lastRowIndex, sheet, map);
            //存入臨時表
            getProjectData(map);
            //存入真實表
            saveProjectExcel(count);

            bufferedInputStream.close();
            fileInputStream.close();
        }

四：

 /**
     * 分析Excel表並將所有數據存入map中
     * @param lastRowIndex
     * @param sheet
     * @param map
     */
        public void analyzerExcel(int lastRowIndex, XSSFSheet sheet, Map<String,List> map){
            for (int i = 1; i <= lastRowIndex; i++) {
                XSSFRow row = sheet.getRow(i);
                short lastCellNum = row.getLastCellNum();
                String s = String.valueOf(i).trim();
                List<Object>  strings= new ArrayList<>();
                for(int j=0;j<lastCellNum;j++){
                    //調用getCellStringValue類處理格式問題
                    String cellStringValue = getCellStringValue(row.getCell(j));
                    strings.add(cellStringValue);
                }
                map.put(s,strings);
            }
        }

五： 

  /**
     * 遍歷Excel取得數據存放到臨時表
     * @param map
     */
    public void  getProjectData(Map<String,List> map){
        for(List m:map.values()){//遍歷map的值
            // System.out.println("值value ："+m);
            ProjectInfo projectInfo = new ProjectInfo();
            projectInfo.setId(m.get(0).toString());
            projectInfo.setTotalMoney(m.get(1).toString());
            projectInfo.setWorks(m.get(2).toString());
            projectInfo.setRealityDate(m.get(3).toString());
            projectInfo.setRemitMoney(m.get(4).toString());
            projectInfo.setOffice(m.get(5).toString());
            projectInfo.setAuditDate(m.get(6).toString());
            projectInfo.setProjectGroup(m.get(7).toString());
            projectInfoMapper.save(projectInfo);
        }
    }

 六：

/**
     * 獲取臨時表數據並存入真實表
     * @param count
     */
    public  void saveProjectExcel(int count){
        List<ProjectInfo> all = projectInfoMapper.findAll();
        for (ProjectInfo n:all){
            projectInfoMapper.export(n);
            System.out.println("第"+count+"次:"+n);
            count++;
        }
    }