diff --git a/common/pom.xml b/common/pom.xml
index 58601bd..7e4f0b8 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -17,4 +17,32 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
+    <dependencies>
+        <dependency>
+            <groupId>net.rzdata</groupId>
+            <artifactId>demo-core</artifactId>
+            <version>5.1.0-SNAPSHOT</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-boot-starter</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>cn.dev33</groupId>
+            <artifactId>sa-token-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
 </project>
diff --git a/common/src/main/java/net/rzdata/demo/exception/GlobalExceptionHandler.java b/common/src/main/java/net/rzdata/demo/exception/GlobalExceptionHandler.java
new file mode 100644
index 0000000..40a1ca3
--- /dev/null
+++ b/common/src/main/java/net/rzdata/demo/exception/GlobalExceptionHandler.java
@@ -0,0 +1,164 @@
+package net.rzdata.demo.exception;
+
+import cn.dev33.satoken.exception.NotLoginException;
+import cn.dev33.satoken.exception.NotPermissionException;
+import cn.dev33.satoken.exception.NotRoleException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.validation.ConstraintViolation;
+import jakarta.validation.ConstraintViolationException;
+import lombok.extern.slf4j.Slf4j;
+import net.rzdata.domain.Result;
+import net.rzdata.exception.ClientException;
+import net.rzdata.exception.ServerException;
+import net.rzdata.exception.ThirdPartyException;
+import org.springframework.context.support.DefaultMessageSourceResolvable;
+import org.springframework.http.HttpStatus;
+import org.springframework.validation.BindException;
+import org.springframework.web.HttpRequestMethodNotSupportedException;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+import java.util.stream.Collectors;
+
+/**
+ * 全局异常处理
+ */
+@Slf4j
+public class GlobalExceptionHandler {
+
+    protected final transient String errorMessage = "系统错误，请联系系统管理员";
+
+    /**
+     * 权限码异常
+     */
+    @ExceptionHandler(NotPermissionException.class)
+    @ResponseStatus(HttpStatus.FORBIDDEN)
+    public Result<Void> handleNotPermissionException(NotPermissionException e, HttpServletRequest request) {
+        String requestURI = request.getRequestURI();
+        log.error("请求地址'{}',权限码校验失败'{}'", requestURI, e.getMessage());
+        ClientException ce = new ClientException("没有访问权限，请联系管理员授权", e);
+        return Result.fail(ce);
+    }
+
+    /**
+     * 角色权限异常
+     */
+    @ExceptionHandler(NotRoleException.class)
+    @ResponseStatus(HttpStatus.FORBIDDEN)
+    public Result<Void> handleNotRoleException(NotRoleException e, HttpServletRequest request) {
+        String requestURI = request.getRequestURI();
+        log.error("请求地址'{}',角色权限校验失败'{}'", requestURI, e.getMessage());
+        ClientException ce = new ClientException("没有访问权限，请联系管理员授权", e);
+        return Result.fail(ce);
+    }
+
+    /**
+     * 认证失败
+     */
+    @ExceptionHandler(NotLoginException.class)
+    @ResponseStatus(HttpStatus.UNAUTHORIZED)
+    public Result<Void> handleNotLoginException(NotLoginException e, HttpServletRequest request) {
+        String requestURI = request.getRequestURI();
+        log.error("请求地址'{}',认证失败'{}',无法访问系统资源", requestURI, e.getMessage());
+        ClientException ce = new ClientException("没有访问权限，请联系管理员授权", e);
+        return Result.fail(ce);
+    }
+
+    /**
+     * 请求方式不支持
+     */
+    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
+    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
+    public Result<Void> handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException e, HttpServletRequest request) {
+        String requestURI = request.getRequestURI();
+        log.error("请求地址'{}',不支持'{}'请求", requestURI, e.getMethod());
+        ServerException se = new ServerException("请求方式不支持", e);
+        return Result.fail(se, errorMessage);
+    }
+
+    @ExceptionHandler(ClientException.class)
+    @ResponseStatus(HttpStatus.BAD_REQUEST)
+    public Result<Void> handleClientException(ClientException e) {
+        log.error("客户端异常: {}", e.getMessage(), e);
+        return Result.fail(e);
+    }
+
+    @ExceptionHandler(ServerException.class)
+    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
+    public Result<Void> handleServerException(ServerException e) {
+        log.error("服务端异常: {}", e.getMessage(), e);
+        return Result.fail(e, errorMessage);
+    }
+
+    @ExceptionHandler(ThirdPartyException.class)
+    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
+    public Result<Void> handleThirdPartyException(ThirdPartyException e) {
+        log.error("第三方服务异常: {}", e.getMessage(), e);
+        return Result.fail(e, errorMessage);
+    }
+
+    /**
+     * 拦截未知的运行时异常
+     */
+    @ExceptionHandler(RuntimeException.class)
+    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
+    public Result<String> handleRuntimeException(RuntimeException e, HttpServletRequest request) {
+        String requestURI = request.getRequestURI();
+        log.error("请求地址'{}',发生未知异常.", requestURI, e);
+        ServerException se = new ServerException(errorMessage, e);
+        return Result.fail(se);
+    }
+
+    /**
+     * 系统异常
+     */
+    @ExceptionHandler(Exception.class)
+    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
+    public Result<String> handleException(Exception e, HttpServletRequest request) {
+        String requestURI = request.getRequestURI();
+        log.error("请求地址'{}',发生系统异常.", requestURI, e);
+        ServerException se = new ServerException(errorMessage, e);
+        return Result.fail(se);
+    }
+
+    /**
+     * 自定义验证异常
+     */
+    @ExceptionHandler(BindException.class)
+    @ResponseStatus(HttpStatus.BAD_REQUEST)
+    public Result<Void> handleBindException(BindException e) {
+        log.error(e.getMessage(), e);
+        String message = e.getAllErrors().parallelStream()
+            .map(DefaultMessageSourceResolvable::getDefaultMessage)
+            .collect(Collectors.joining(", "));
+        ClientException ce = new ClientException(message, e);
+        return Result.fail(ce);
+    }
+
+    /**
+     * 自定义验证异常
+     */
+    @ExceptionHandler(ConstraintViolationException.class)
+    @ResponseStatus(HttpStatus.BAD_REQUEST)
+    public Result<Void> constraintViolationException(ConstraintViolationException e) {
+        log.error(e.getMessage(), e);
+        String message = e.getConstraintViolations().parallelStream()
+            .map(ConstraintViolation::getMessage)
+            .collect(Collectors.joining(", "));
+        ClientException ce = new ClientException(message, e);
+        return Result.fail(ce);
+    }
+
+    /**
+     * 自定义验证异常
+     */
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    @ResponseStatus(HttpStatus.BAD_REQUEST)
+    public Result<Void> handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {
+        log.error(e.getMessage(), e);
+        String message = e.getBindingResult().getFieldError().getDefaultMessage();
+        ClientException ce = new ClientException(message, e);
+        return Result.fail(ce);
+    }
+}
diff --git a/common/src/main/java/net/rzdata/demo/trait/BaseRepository.java b/common/src/main/java/net/rzdata/demo/trait/BaseRepository.java
new file mode 100644
index 0000000..6ef7c4b
--- /dev/null
+++ b/common/src/main/java/net/rzdata/demo/trait/BaseRepository.java
@@ -0,0 +1,16 @@
+package net.rzdata.demo.trait;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+
+public abstract class BaseRepository<T, M extends BaseMapper<T>> {
+
+    private final transient M mapper;
+
+    public BaseRepository(M mapper) {
+        this.mapper = mapper;
+    }
+
+    public M get() {
+        return this.mapper;
+    }
+}
diff --git a/common/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports b/common/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports
new file mode 100644
index 0000000..da71b2a
--- /dev/null
+++ b/common/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports
@@ -0,0 +1 @@
+net.rzdata.demo.exception.GlobalExceptionHandler
diff --git a/core/pom.xml b/core/pom.xml
new file mode 100644
index 0000000..474f2ff
--- /dev/null
+++ b/core/pom.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>net.rzdata</groupId>
+        <artifactId>demo</artifactId>
+        <version>5.1.0-SNAPSHOT</version>
+    </parent>
+    <artifactId>demo-core</artifactId>
+    <packaging>jar</packaging>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+</project>
diff --git a/core/src/main/java/net/rzdata/domain/Id.java b/core/src/main/java/net/rzdata/domain/Id.java
new file mode 100644
index 0000000..2c4aa5b
--- /dev/null
+++ b/core/src/main/java/net/rzdata/domain/Id.java
@@ -0,0 +1,8 @@
+package net.rzdata.domain;
+
+public record Id(String id) {
+
+    public static Id of(String id) {
+        return new Id(id);
+    }
+}
diff --git a/core/src/main/java/net/rzdata/domain/Result.java b/core/src/main/java/net/rzdata/domain/Result.java
new file mode 100644
index 0000000..65e4a47
--- /dev/null
+++ b/core/src/main/java/net/rzdata/domain/Result.java
@@ -0,0 +1,42 @@
+package net.rzdata.domain;
+
+import lombok.*;
+import net.rzdata.exception.BaseException;
+
+@Getter
+@ToString
+@NoArgsConstructor
+@AllArgsConstructor(access = AccessLevel.PROTECTED)
+public class Result<T> {
+
+    public static final String SUCCESS_CODE = "00000";
+    public static final String SUCCESS_MESSAGE = "操作成功";
+
+    private String code;
+    private String message;
+    private T data;
+
+    public static <T> Result<T> ok() {
+        return new Result<>(SUCCESS_CODE, SUCCESS_MESSAGE, null);
+    }
+
+    public static <T> Result<T> ok(T data) {
+        return new Result<>(SUCCESS_CODE, SUCCESS_MESSAGE, data);
+    }
+
+    public static <T> Result<T> fail(BaseException e) {
+        return new Result<>(e.getCode(), e.getMessage(), null);
+    }
+
+    public static <T> Result<T> fail(BaseException e, T data) {
+        return new Result<>(e.getCode(), e.getMessage(), data);
+    }
+
+    public static <T> Result<T> fail(BaseException e, String message) {
+        return new Result<>(e.getCode(), message, null);
+    }
+
+    public static <T> Result<T> fail(BaseException e, String message, T data) {
+        return new Result<>(e.getCode(), message, data);
+    }
+}
diff --git a/core/src/main/java/net/rzdata/exception/BaseException.java b/core/src/main/java/net/rzdata/exception/BaseException.java
new file mode 100644
index 0000000..48c21cf
--- /dev/null
+++ b/core/src/main/java/net/rzdata/exception/BaseException.java
@@ -0,0 +1,21 @@
+package net.rzdata.exception;
+
+public abstract sealed class BaseException extends RuntimeException
+    permits ClientException, ServerException, ThirdPartyException {
+
+    private final String code;
+
+    protected BaseException(String code, String message) {
+        super(message);
+        this.code = code;
+    }
+
+    protected BaseException(String code, String message, Throwable cause) {
+        super(message, cause);
+        this.code = code;
+    }
+
+    public String getCode() {
+        return this.code;
+    }
+}
diff --git a/core/src/main/java/net/rzdata/exception/ClientException.java b/core/src/main/java/net/rzdata/exception/ClientException.java
new file mode 100644
index 0000000..0a63d41
--- /dev/null
+++ b/core/src/main/java/net/rzdata/exception/ClientException.java
@@ -0,0 +1,25 @@
+package net.rzdata.exception;
+
+/**
+ * 客户端异常
+ */
+public non-sealed class ClientException extends BaseException {
+
+    public static final String CLIENT_ERROR_CODE = "A0001";
+
+    public ClientException(String message) {
+        super(CLIENT_ERROR_CODE, message);
+    }
+
+    public ClientException(String message, Throwable cause) {
+        super(CLIENT_ERROR_CODE, message, cause);
+    }
+
+    protected ClientException(String code, String message) {
+        super(code, message);
+    }
+
+    protected ClientException(String code, String message, Throwable cause) {
+        super(code, message, cause);
+    }
+}
diff --git a/core/src/main/java/net/rzdata/exception/ServerException.java b/core/src/main/java/net/rzdata/exception/ServerException.java
new file mode 100644
index 0000000..f436288
--- /dev/null
+++ b/core/src/main/java/net/rzdata/exception/ServerException.java
@@ -0,0 +1,25 @@
+package net.rzdata.exception;
+
+/**
+ * 服务端异常
+ */
+public non-sealed class ServerException extends BaseException {
+
+    public static final String SERVER_ERROR_CODE = "B0001";
+
+    public ServerException(String message) {
+        super(SERVER_ERROR_CODE, message);
+    }
+
+    public ServerException(String message, Throwable cause) {
+        super(SERVER_ERROR_CODE, message, cause);
+    }
+
+    protected ServerException(String code, String message) {
+        super(code, message);
+    }
+
+    protected ServerException(String code, String message, Throwable cause) {
+        super(code, message, cause);
+    }
+}
diff --git a/core/src/main/java/net/rzdata/exception/ThirdPartyException.java b/core/src/main/java/net/rzdata/exception/ThirdPartyException.java
new file mode 100644
index 0000000..dc287e3
--- /dev/null
+++ b/core/src/main/java/net/rzdata/exception/ThirdPartyException.java
@@ -0,0 +1,25 @@
+package net.rzdata.exception;
+
+/**
+ * 第三方服务异常
+ */
+public non-sealed class ThirdPartyException extends BaseException {
+
+    public static final String THIRD_PARTY_ERROR_CODE = "C0001";
+
+    public ThirdPartyException(String message) {
+        super(THIRD_PARTY_ERROR_CODE, message);
+    }
+
+    public ThirdPartyException(String message, Throwable cause) {
+        super(THIRD_PARTY_ERROR_CODE, message, cause);
+    }
+
+    protected ThirdPartyException(String code, String message) {
+        super(code, message);
+    }
+
+    protected ThirdPartyException(String code, String message, Throwable cause) {
+        super(code, message, cause);
+    }
+}
diff --git a/core/src/main/java/net/rzdata/trait/IConverter.java b/core/src/main/java/net/rzdata/trait/IConverter.java
new file mode 100644
index 0000000..94679f4
--- /dev/null
+++ b/core/src/main/java/net/rzdata/trait/IConverter.java
@@ -0,0 +1,11 @@
+package net.rzdata.trait;
+
+/**
+ * 实体转换类
+ * @param <S> 源类型
+ * @param <T> 目标类型
+ */
+public interface IConverter<S, T> {
+
+    T convert(S source);
+}
diff --git a/core/src/main/java/net/rzdata/trait/IQuery.java b/core/src/main/java/net/rzdata/trait/IQuery.java
new file mode 100644
index 0000000..b2f891e
--- /dev/null
+++ b/core/src/main/java/net/rzdata/trait/IQuery.java
@@ -0,0 +1,10 @@
+package net.rzdata.trait;
+
+/**
+ * 请求实体类
+ * @param <T> 核心模型类型
+ */
+public interface IQuery<T> {
+
+    T into();
+}
diff --git a/pom.xml b/pom.xml
index d0730f6..2d8acb4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -16,6 +16,7 @@
     <modules>
         <module>service</module>
         <module>common</module>
+        <module>core</module>
     </modules>
 
     <properties>
diff --git a/service/pom.xml b/service/pom.xml
index 5c6f4eb..a85c73b 100644
--- a/service/pom.xml
+++ b/service/pom.xml
@@ -67,10 +67,6 @@
             <groupId>org.mapstruct</groupId>
             <artifactId>mapstruct</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.liquibase</groupId>
-            <artifactId>liquibase-core</artifactId>
-        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>