优化代码-我的文件图标显示

src/main/java/cn/timer/api/bean/disk/DiskFiles.java

 package cn.timer.api.bean.disk;
 
 import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.extension.activerecord.Model;
 import io.swagger.annotations.ApiModel;
@@ -10,10 +11,7 @@ import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
-import javax.persistence.Entity;
-import javax.persistence.GeneratedValue;
-import javax.persistence.Id;
-import javax.persistence.Table;
+import javax.persistence.*;
 import java.io.Serializable;
 import java.util.Date;
 
@@ -109,4 +107,12 @@ public class DiskFiles extends Model<DiskFiles> {
 	*/
 	@ApiModelProperty(value = "")
 	private Date updateTime;
+
+	/**
+	 * 文件图标
+	 */
+	@Transient
+	@TableField(exist = false)
+	@ApiModelProperty(value = "文件图标")
+	private String url;
 }

src/main/resources/mapping/disk/DiskFilesMapper.xml

@@ -21,8 +21,8 @@
         <result property="updateTime" column="update_time"/>
     </resultMap>
 
-    <select id="selectListByParam" resultMap="BaseResultMap">
-        SELECT f.* FROM `disk_files` f
+    <select id="selectListByParam" resultType="cn.timer.api.bean.disk.DiskFiles">
+        SELECT f.*,(SELECT url FROM disk_file_image WHERE f.file_type=type AND delete_flag = 0 LIMIT 1) url FROM `disk_files` f
         LEFT JOIN disk_catalogue_files cf ON f.id=cf.files_id  AND cf.id > 0
         WHERE f.delete_flag=0 AND cf.delete_flag = 0
         AND cf.catalogue_id=#{param.parentId}