JdbcTemplate批量插入数据

运行环境：SpringBoot，注入JdbcTemplate

    @Autowired
    private JdbcTemplate jdbcTemplate;

1、单表批量插入数据

    @Test
    public void batchTest() throws IOException {

        InputStream inputStream = new FileInputStream("O:\files\测试.txt");

        List<Object[]> list = new ArrayList<>();

        for (String readLine : IOUtils.readLines(inputStream,"utf-8")){
            String[] s = readLine.split("\|");
            //list.add(new Object[]{s[0],s[1],s[2],s[3],s[4]});
            list.add(new Object[]{s[1],s[0]});
        }

        //遍历List<Object[]>集合中的每一个元素
/*        for (Object[] o : list){
            for (int i = 0; i < o.length; i++) {
                System.out.println("==========="+o[i]);
            }

        }*/

        //执行批量插入操作
        String sql = "INSERT INTO `test`(`name`,`area`) VALUES (?,?)";
        jdbcTemplate.batchUpdate(sql, list);

    }

样本数据：测试.txt

测试数据1|测试数据2|测试数据3
测试数据4|测试数据5|测试数据6
测试数据7|测试数据8|测试数据9

单次循环插入：

    public void insertToTag(String filename) throws IOException {
        InputStream is = new FileInputStream(filename);

        Map<String,String> map = new HashMap<>();
        for (String readLine : IOUtils.readLines(is, "utf-8")) {
            String[] s = readLine.split("\|");
            map.put(s[1],s[0]);
        }

        String sql = "INSERT INTO `test`(`name`,`area`) VALUES (?,?)";
        for (Map.Entry<String, String> stringStringEntry : map.entrySet()) {
            // System.out.println(stringStringEntry.getKey()+"-->"+stringStringEntry.getValue());
            jdbcTemplate.update(sql,stringStringEntry.getKey(),stringStringEntry.getValue());
        }

    }

2、联表插入数据，将字典表中的id插入到另一张表

    public void insertToGuideBatch(String filename) throws IOException {

        InputStream is = new FileInputStream(filename);

        //字段名，id值
        Map<String,Long> map1 = new HashMap<>();

        //该方法类似于set集合
        SqlRowSet s1 =  jdbcTemplate.queryForRowSet("SELECT `id`,`area` FROM g_enforcement_tag");
        while (s1.next()){
            map1.put(s1.getString("area"),s1.getLong("id"));
        }

        for (String readLine : IOUtils.readLines(is, "utf-8")) {
            String[] s = readLine.split("\|");
            Long id = map1.get(s[0]);
            // jdbcTemplate.update("insert into xxx value (?,?)",id,s[4]);
            jdbcTemplate.update("INSERT INTO `g_enforcement_guide`(`prop1`,`prop2`,`prop3`,`prop4`,`prop5`) VALUES (?,?,?,?,?)","test",id,s[2],s[3],s[4]);

        }
    }