上传excel文件，读取内容，增加事务写入数据库

package com.inspur.icpmg.itss.asset.dao.impl;

import com.inspur.icpmg.util.DBHelper;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.DefaultTransactionDefinition;

import java.io.*;

/**
 * Create by wjup on 2019/5/31 17:00
 */
public class ImportExcel {
    /**
     * 上传的excel文件和文件名称
     *
     * form表单上传框name为acUpload
     * acUploadFileName：xxFileName格式自动获取上传的文件名
     *
     */
    private File acUpload;
    private String acUploadFileName;

    public String getAcUploadFileName() {
        return acUploadFileName;
    }
    public void setAcUploadFileName(String acUploadFileName) {
        this.acUploadFileName = acUploadFileName;
    }
    public File getAcUpload() {
        return acUpload;
    }
    public void setAcUpload(File acUpload) {
        this.acUpload = acUpload;
    }
    private static JdbcTemplate jdbcTemplate = new JdbcTemplate(DBHelper.getDataSource());// 数据库连接池

    public void file() throws IOException {
        InputStream in = new FileInputStream(acUpload);
        if (acUploadFileName.endsWith("xls") || acUploadFileName.endsWith("xlsx")) {
            Workbook wb = null;
            if (acUploadFileName.endsWith("xls")) {
                //2003
                wb = new HSSFWorkbook(in);
            } else if (acUploadFileName.endsWith("xlsx")) {
                //2007
                wb = new XSSFWorkbook(in);
            }
            // 获取excel表第一张sheet页
            Sheet sheet1 = wb.getSheetAt(0);
            importExcel(sheet1);
        }
    }

    public void importExcel(Sheet sheet) {
        //添加事务
        DefaultTransactionDefinition def = new DefaultTransactionDefinition();
        DataSourceTransactionManager transactionManager = new DataSourceTransactionManager(jdbcTemplate.getDataSource());
        TransactionStatus status = transactionManager.getTransaction(def);
        Boolean Iscommit = false;
        String name = "";

        for (Row row : sheet) {
            if (row.getRowNum() >= 1) {
                boolean flag = false;
                for (int c = row.getFirstCellNum(); c < row.getLastCellNum(); c++) {
                    if (row.getCell(c) != null && row.getCell(c).getCellType() != HSSFCell.CELL_TYPE_BLANK) {
                        flag = true;
                    }
                }
                if (flag) {
                    if (row.getCell(0) != null) {
                        name = row.getCell(0).toString().trim();
                    } else {
                        String msg = "不能为空";
                        Iscommit = true;
                    }
                }
            }
        }

        String sql = "insert into user values("+name+")";

        if (Iscommit) {
            transactionManager.rollback(status);
        } else {
            try {
                // 出现异常回滚事务
                jdbcTemplate.batchUpdate(sql);
            } catch (Exception ex) {
                transactionManager.rollback(status);
            } finally {
                transactionManager.commit(status);
            }
        }
    }

}