高效快速导入EXCEL数据

　　private File file; //上传的文件
　　private String fileFileName; //文件名称
    
　　public File getImage() {
        return image;
　　}
　　public void setImage(File image) {
        this.image = image;
　　}
    
　　public String getImageFileName() {
        return imageFileName;
　　}

　　public void setImageFileName(String imageFileName) {
        this.imageFileName = imageFileName;
　　}
    
    public String importExcel() throws Exception {
        HttpServletRequest request = ServletActionContext.getRequest();
        String realpath = ServletActionContext.getServletContext().getRealPath("/");
        if (file != null) {
            File savefile = new File(new File(realpath), fileFileName);
            if (!savefile.getParentFile().exists()){
                savefile.getParentFile().mkdirs();
            }
            FileUtils.copyFile(file, savefile);
            String newName = savefile.getName();

            //执行操作
            dao.addAll(realpath+newName);
        }
        return SUCCESS;
    }

public void addAll(String url){
    
        //生成一个备用码
        String guid=RandomUtils.myGetNo(9);
        
        //将excel数据转为集合并以100条每次的节奏插入临时表中
        Workbook rwb = null;
        try {
            //InputStream is = new FileInputStream("F:/龙里县贫困户.xls");
            InputStream is = new FileInputStream(url);
            rwb = Workbook.getWorkbook(is);
        } catch (Exception ex) {
             ex.printStackTrace();
        }

        //获取第一张Sheet表
        Sheet rs = (Sheet) rwb.getSheet(0);
        //总行数
        int rsRows = rs.getRows();
        //总列数
        int rsColumns = rs.getColumns();
        Cell c1,c2 = null;
        String strTmp1,strTmp2="";
       
        int no=Integer.parseInt(findMaxId())+10;
        System.out.println("总行数"+rsRows+"总列数"+rsColumns+" "+no);
        try {
            openConn();
            //设置为不自动提交，等凑足100条的时候再批量提交一次
            conn.setAutoCommit(false);
            stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);
        } catch (SQLException e1) {
            e1.printStackTrace();
        }

        for(int i=2;i<rsRows;i++){      
            c1 = ((jxl.Sheet) rs).getCell(0, i);
            strTmp1 = c1.getContents();
            c2 = ((jxl.Sheet) rs).getCell(1, i);
            strTmp2 = c2.getContents();

            no++;
            
            if(!strTmp1.equals("") && !strTmp3.equals("")){
                StringBuilder strSql = new StringBuilder();
                strSql.append(" INSERT INTO CUST_OBJECT_TEMP ");//CUST_OBJECT_TEMP
                strSql.append(" (CUST_ID,CREDENTIALS,COUNZHENG,GUID) ");
                strSql.append("    VALUES ");
                strSql.append(" (‘"+no+"‘,‘"+strTmp1+"‘,‘"+strTmp2+"‘,‘"+guid+"‘) ");
                
                try {
                    stmt.execute(strSql.toString());
                    //100条数据提交一次
                    if(i%100==0||i==(rsRows-1)){
                        conn.commit();
                    }
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
        try {
            closeAll();
        }catch (Exception e) {
            e.printStackTrace();
        }
        
        //至此所有的excel数据都已经插入到了临时表CUST_OBEJCT_YEMP中了
        //注意：临时表除了有正是表的所有字段，还额外新增了两个字段
        1、IF_INSERT 建表的时候默认为0 表示该数据还没有插入正式表 ，当插入正是表之后，会变为1.
        2、GUID 标识了数据的批次，String guid=RandomUtils.myGetNo(9); 每一次excel导入的数据都同属于一个批次。
        
        
        //调用存储过程
        excelAlladd(guid);
    }

public String excelAlladd(String guid){

        String result = "1";
        
        openConn();
        try{
            CallableStatement c=(CallableStatement) conn.prepareCall("{call PRO_CUST_TABLE(?,?)}");
            c.setString(1,guid);//传入批次号guid
            c.registerOutParameter(2, Types.INTEGER);//设置返回值类型为INT
            c.execute();
            
            result = c.getString(2);  //获取返回值
            
            if("0".equals(result)){
                System.out.println("存储过程调用成功"); 
            }else{
                System.out.println("存储过程调用失败"); 
            }
        }catch (Exception e) {
            System.out.println("调用存储过程"+e);
        }
        closeAll();
        
        return result;
    }

CREATE OR REPLACE PROCEDURE PRO_CUST_TABLE(V_GUID VARCHAR2,V_RETURN OUT integer)
IS

  V_CNT_1 NUMBER;//定义变量V_CNT_1
  V_RETCODE VARCHAR2(20);//定义结果代码
  V_RETINFO VARCHAR2(20);//定义结果提示
  
  //开始执行存储过程
  BEGIN   
    //取得满足A.IF_INSERT = 0 AND A.GUID = V_GUID（未插入正式表且是同一个批次号）的数据条数 作为 V_CNT_1变量的值
    SELECT COUNT(*) INTO V_CNT_1 FROM CUST_OBJECT_TEMP A WHERE A.IF_INSERT = 0 AND A.GUID = V_GUID;
  
  V_RETURN := 1;//定义返回值为1
  
  //如果有符合插入条件的数据则执行以下操作
  IF V_CNT_1 > 0 THEN
  
    //1）  将满足条件的数据插入到正式表中
    INSERT INTO CUST_OBJECT(
        cust_id,
        CREDENTIALS,
        COUNZHENG
    )
    SELECT  
        CUST_ID,
        CREDENTIALS,
        COUNZHENG
    FROM CUST_OBJECT_TEMP A1
    WHERE IF_INSERT = 0
    AND A1.GUID = V_GUID
    AND NOT EXISTS (
        SELECT 1 FROM CUST_OBJECT A2 WHERE TRIM(A1.CREDENTIALS) = TRIM(A2.CREDENTIALS) 
    );
    COMMIT;
    
    //2） 将满足条件的数据的插入状态更新为已插入IF_INSERT = 1
    UPDATE CUST_OBJECT_TEMP A SET IF_INSERT = 1 WHERE IF_INSERT = 0 AND A.GUID = V_GUID;
    COMMIT;
    
    //3） 将临时表已插入状态的数据插入历史记录表 HIS_CUST_OBJECT 作为追溯的证据
    INSERT INTO HIS_CUST_OBJECT(
        CUST_ID,
        CREDENTIALS,
        COUNZHENG,
        IF_INSERT
    )
    SELECT 
        CUST_ID,
        CREDENTIALS,
        COUNZHENG,
        IF_INSERT
    FROM CUST_OBJECT_TEMP A
    WHERE IF_INSERT = 1 AND A.GUID = V_GUID;
    COMMIT;
    
    //4） 删除临时表的数据
    DELETE FROM CUST_OBJECT_TEMP A WHERE IF_INSERT = 1 AND A.GUID = V_GUID;
    COMMIT;
    
    //如果这些都通过了，设置返回值为0
    V_RETURN := 0;
END IF;

//捕捉异常
EXCEPTION
  WHEN OTHERS THEN
    ROLLBACK;
    V_RETCODE := ‘FAIL‘;
    V_RETINFO := SQLERRM;
end;