feat(security): 重构安全配置并添加用户认证功能

refactor: 将ResponseMessage移动到config包并增强功能
feat: 添加用户管理相关功能及密码加密配置
fix: 修复HelpController中README文件路径问题
docs: 更新application.properties配置注释
style: 清理无用导入和日志文件

src/main/java/com/qf/myafterprojecy/pojo/dto/MarkdownDto.java

@@ -0,0 +1,20 @@
+package com.qf.myafterprojecy.pojo.dto;
+
+import lombok.Data;
+
+import javax.validation.constraints.NotBlank;
+
+@Data
+public class MarkdownDto {
+    @NotBlank(message = "Markdown内容不能为空")
+    private String markdownscontent;
+
+    public String getMarkdownscontent() {
+        return markdownscontent;
+    }
+
+    public void setMarkdownscontent(String markdownscontent) {
+        this.markdownscontent = markdownscontent;
+    }
+
+}

src/main/java/com/qf/myafterprojecy/pojo/dto/UserDto.java

@@ -0,0 +1,61 @@
+package com.qf.myafterprojecy.pojo.dto;
+
+import javax.validation.constraints.NotBlank;
+
+public class UserDto {
+    @NotBlank(message = "用户名不能为空")
+    private String username;
+    
+    @NotBlank(message = "密码不能为空")
+    private String password;
+    
+    @NotBlank(message = "邮箱不能为空")
+    private String email;
+    
+    @NotBlank(message = "手机号不能为空")
+    private String phone;
+    
+    @NotBlank(message = "角色不能为空")
+    private int role;
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    public int getRole() {
+        return role;
+    }
+
+    public void setRole(int role) {
+        this.role = role;
+    }
+
+}