diff --git a/src/main/java/entity/TransportId.java b/src/main/java/entity/TransportId.java
new file mode 100644
index 0000000..f79962f
--- /dev/null
+++ b/src/main/java/entity/TransportId.java
@@ -0,0 +1,38 @@
+package entity;
+
+import java.io.Serializable;
+import java.util.Objects;
+
+public class TransportId implements Serializable {
+    private String taskid;
+    private String uploaduserid;
+    private String downloaduserid;
+
+    public TransportId() {}
+
+    public TransportId(String taskid, String uploaduserid, String downloaduserid) {
+        this.taskid = taskid;
+        this.uploaduserid = uploaduserid;
+        this.downloaduserid = downloaduserid;
+    }
+
+    public String getTaskid() { return taskid; }
+    public void setTaskid(String taskid) { this.taskid = taskid; }
+    public String getUploaduserid() { return uploaduserid; }
+    public void setUploaduserid(String uploaduserid) { this.uploaduserid = uploaduserid; }
+    public String getDownloaduserid() { return downloaduserid; }
+    public void setDownloaduserid(String downloaduserid) { this.downloaduserid = downloaduserid; }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        TransportId that = (TransportId) o;
+        return Objects.equals(taskid, that.taskid) && Objects.equals(uploaduserid, that.uploaduserid) && Objects.equals(downloaduserid, that.downloaduserid);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(taskid, uploaduserid, downloaduserid);
+    }
+}
\ No newline at end of file