更新api文档,修改数据表结构,新增object文件

Change-Id: I718db9ed5d4128aa3db1be3f4ba75547872811f8
diff --git a/src/main/java/object/Appeal.java b/src/main/java/object/Appeal.java
index 66c8822..3df37e8 100644
--- a/src/main/java/object/Appeal.java
+++ b/src/main/java/object/Appeal.java
@@ -1,5 +1,9 @@
 package object;
 
 public class Appeal {
-    
+    public String appealid;
+    public String appealuserid;
+    public String content;
+    public String fileURL;
+    public int state; // 0: pending, 1: approved, 2: rejected
 }