JG-数据重置（wd）

代码

  /** * 测试类 */
    public void toSql() {
    
        String table = "gzw07";
        String id1 = "43";
        String id2 = "44";
        String format = String.format("select * from %s where id = '%s'", table, id1);
        //集合
        Map<String, Object> map = jdbcTemplate.queryForMap(format);
        String sql = String.format("select * from %s where id = '%s' ", table, id2);
        //数据类->jSON
        User bean = jdbcTemplate.queryForObject(sql, new BeanPropertyRowMapper<>(User.class));
        String string = JSON.toJSONString(bean);
        Map map2 = (Map) JSON.parse(string);
        Set<String> strings = map.keySet();
        Set<String> set = map2.keySet();
        getmap(map, map2);
    }

    /** * 把map2值赋值给map1 * * @param map1 * @param map2 */
    public void getmap(Map map1, Map map2) {
    
        System.out.println(map1);
        Set<String> strings = map1.keySet();
        for (String str : strings) {
    
            //可用可不用（JG-id一样的）
            if (!"id".equals(str)) {
    
                String var = (String) map2.get(str);
                map1.put(str, var);
            }
        }
        System.out.println(map1);
        // String gzw07 = maptosql(map1, "gzw07");
    }

    /** * map1转换成sql * * @param map1 * @param table 表名 * @return */
    public String maptosql(Map map1, String table) {
    
        String sql = "update " + table + " set ";
        Set<String> set = map1.keySet();
        for (String str : set) {
    
            if (!"id".equals(str)) {
    
                sql = sql + str + " = '" + map1.get(str) + "' , ";
            }
        }
        sql = sql.substring(0, sql.lastIndexOf(","));
        sql = sql + " where id = " + "'" + map1.get("id") + "'";
        System.out.println(sql);
        return sql;
/* int update = jdbcTemplate.update(sql); System.out.println(update);*/
    }

    /** * @param table 数据属于那个表 * @param id 数据ID * @param json JSON -》to DB * @return */
    public String zs1(String table, String id, String json) {
    
        //1.基本sql，以他为模板去赋值 map
        String format = String.format("select * from %s where id = '%s'", table, id);
        Map<String, Object> map = jdbcTemplate.queryForMap(format);
        //是需要重置的数据。只能模拟
        Map map2 = (Map) JSON.parse(json);
        //2.将map2赋值给map(id除外，ID一样无所求)
        getmap(map, map2);
        //3.将sql拼接后返回
        String maptosql = maptosql(map, table);
        int update = jdbcTemplate.update(maptosql);
        return String.valueOf(update);
    }

controller

 @RequestMapping(path = "/sql", method = {
    RequestMethod.GET})
    public Result sql(String id) {
    
        //fileService.toSql();
        String js = "{\"cjsj\":\"2022-07-17 18:40:08\",\"id\":44,\"lxfs\":\"44\",\"tzqy\":\"44\",\"userName\":\"tom44\",\"yxds\":\"44\"}";
        String gzw07 = fileService.zs1("gzw07", id, js);
        return Result.init(200, "", gzw07);
    }