docs: public static ExcelConfig getXmlConfig(String xmlPath) {
          ExcelConfig config = XmlUtil.fromXml(new File(xmlPath), ExcelConfig.class);
          try {
              Class clazz = Class.forName(config.getClazz());
              //自动补充没有填写type的列
              for (int i = 0; i < config.getColumns().getColumns().size(); i++) {
                  if (config.getColumn(i).getType() == null || config.getColumn(i).getType().equals("")) {
                      Field field = FieldUtil.getField(clazz, config.getColumn(i).getName());
                      config.getColumn(i).setType(field.getCanonicalName());
                  }
              }
          } catch (ClassNotFoundException e) {
              //ignore
          }
          return config;
      }