fix 修复Oracle代码生成器空值更新报错问题

ruoyi-generator/src/main/java/com/ruoyi/generator/domain/GenTableColumn.java

@@ -8,7 +8,6 @@ import com.ruoyi.common.core.domain.BaseEntity;
 import com.ruoyi.common.utils.StringUtils;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
-import lombok.experimental.Accessors;
 import org.apache.ibatis.type.JdbcType;
 
 import javax.validation.constraints.NotBlank;
@@ -43,7 +42,7 @@ public class GenTableColumn extends BaseEntity {
     /**
      * 列描述
      */
-    @TableField(updateStrategy = FieldStrategy.IGNORED)
+    @TableField(updateStrategy = FieldStrategy.IGNORED, jdbcType = JdbcType.VARCHAR)
     private String columnComment;
 
     /**
@@ -65,13 +64,13 @@ public class GenTableColumn extends BaseEntity {
     /**
      * 是否主键（1是）
      */
-    @TableField(updateStrategy = FieldStrategy.IGNORED)
+    @TableField(updateStrategy = FieldStrategy.IGNORED, jdbcType = JdbcType.VARCHAR)
     private String isPk;
 
     /**
      * 是否自增（1是）
      */
-    @TableField(updateStrategy = FieldStrategy.IGNORED)
+    @TableField(updateStrategy = FieldStrategy.IGNORED, jdbcType = JdbcType.VARCHAR)
     private String isIncrement;
 
     /**