封装的insert 语句

public void insert(String table, Map fields) {
		String sql = "";

		try {

			Assert.hasText(table, "表名不能为空");
			Assert.notEmpty(fields, "字段不能为空");
			table = quoteCol(table);

			Object[] cols = fields.keySet().toArray();
			Object[] values = new Object[cols.length];
			for (int i = 0; i < cols.length; i++) {
				if (fields.get(cols[i]) == null) {
					values[i] = null;
				} else {
					values[i] = fields.get(cols[i]).toString();
				}
				cols[i] = quoteCol(cols[i].toString());
			}

			sql = "INSERT INTO " + table + " ("
					+ StringUtil.implode(", ", cols) + ") VALUES ("
					+ StringUtil.implodeValue(", ", values) + ")";
			//System.out.println(sql);
//			for(int i=0;i<values.length;i++){
//				System.out.println(values[i]);
//			}
			jdbcTemplate.update(sql, values);
		} catch (Exception e) {
			// e.printStackTrace();
			throw new DBRuntimeException(e, sql);
		}
	}