Revert "注册登录,用户等级,社交,动态,新手任务"

This reverts commit 1c359108ca33d46271920ee0cd57dddcb7012937.

Reason for revert: <冲突>

Change-Id: Ie586267169acac99130b1fadf4a5f433441c4b8c
diff --git a/src/main/java/com/example/myproject/entity/VerificationToken.java b/src/main/java/com/example/myproject/entity/VerificationToken.java
new file mode 100644
index 0000000..231fd95
--- /dev/null
+++ b/src/main/java/com/example/myproject/entity/VerificationToken.java
@@ -0,0 +1,58 @@
+package com.example.myproject.entity;
+
+import com.baomidou.mybatisplus.annotation.*;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.AllArgsConstructor;
+
+import java.time.Instant;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@TableName("verification_token")
+@ApiModel("验证令牌实体类")
+public class VerificationToken {
+
+    @TableId(type = IdType.AUTO)
+    @ApiModelProperty(value = "令牌ID")
+    private Long id;
+
+    @ApiModelProperty(value = "令牌字符串")
+    @TableField("token")
+    private String token;
+
+    @ApiModelProperty(value = "令牌过期日期")
+    @TableField("expiry_date")
+    private Instant expiryDate;
+
+    @ApiModelProperty(value = "用户名")
+    @TableField("username")
+    private String username;
+
+    @ApiModelProperty(value = "电子邮件地址")
+    @TableField("email")
+    private String email;
+
+    @ApiModelProperty(value = "加密后的密码")
+    @TableField("password")
+    private String password;
+
+    public VerificationToken(String token, String username, String email, String password, Instant expiryDate) {
+        this.token = token;
+        this.username = username;
+        this.email = email;
+        this.password = password;
+        this.expiryDate = expiryDate;
+    }
+
+    /**
+     * 检查令牌是否过期
+     * @return true 如果令牌已过期
+     */
+    public boolean isExpired() {
+        return expiryDate.isBefore(Instant.now());
+    }
+}