diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b33e75b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,64 @@
+# 此为注释– 将被Git 忽略
+# /结尾表示是目录，忽略目录和目录下的所有件
+# /开头表示根目录，否则是.gitignore的相对目录
+# !开头表示反选
+**/.idea/
+**/target/
+*.iml
+*.ipr
+*.iws
+*.log
+.svn/
+.project
+rebel.xml
+.rebel-remote.xml.*
+**/target/
+pom.xml.tag
+pom.xml.releaseBackup
+pom.xml.versionsBackup
+pom.xml.next
+release.properties
+dependency-reduced-pom.xml
+buildNumber.properties
+.mvn/timing.properties
+# https://github.com/takari/maven-wrapper#usage-without-binary-jar
+.mvn/wrapper/maven-wrapper.jar
+
+.DS_Store
+HELP.md
+## target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+**/node_modules/
+**/logs/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+/supervise-uniapp/.hbuilderx/
+/supervise-uniapp/unpackage/
diff --git a/demo-system/demo-system-biz/pom.xml b/demo-system/demo-system-biz/pom.xml
index cac6dd0..4e4930e 100644
--- a/demo-system/demo-system-biz/pom.xml
+++ b/demo-system/demo-system-biz/pom.xml
@@ -33,16 +33,25 @@
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
         </dependency>
-        <dependency>
-            <groupId>com.yxt.demo</groupId>
-            <artifactId>demo-common-core</artifactId>
-            <version>0.0.1</version>
-            <scope>compile</scope>
-        </dependency>
+<!--        <dependency>-->
+<!--            <groupId>com.yxt.demo</groupId>-->
+<!--            <artifactId>demo-common-core</artifactId>-->
+<!--            <version>0.0.1</version>-->
+<!--            <scope>compile</scope>-->
+<!--        </dependency>-->
         <dependency>
             <groupId>com.baomidou</groupId>
             <artifactId>mybatis-plus-boot-starter</artifactId>
             <version>3.5.1</version>
+        </dependency><dependency>
+        <groupId>cn.hutool</groupId>
+        <artifactId>hutool-all</artifactId>
+        <version>5.8.16</version>
+    </dependency>
+        <dependency>
+            <groupId>com.github.xiaoymin</groupId>
+            <artifactId>knife4j-spring-boot-starter</artifactId>
+            <version>2.0.5</version>
         </dependency>
         <!-- mysql驱动 -->
         <dependency>
diff --git a/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/dto/Dto.java b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/dto/Dto.java
new file mode 100644
index 0000000..902dad8
--- /dev/null
+++ b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/dto/Dto.java
@@ -0,0 +1,8 @@
+package com.yxt.demo.common.core.dto;
+
+
+import com.yxt.demo.common.core.vo.Vo;
+
+public interface Dto extends Vo {
+    
+}
diff --git a/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/query/PagerQuery.java b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/query/PagerQuery.java
new file mode 100644
index 0000000..b48993d
--- /dev/null
+++ b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/query/PagerQuery.java
@@ -0,0 +1,77 @@
+package com.yxt.demo.common.core.query;
+
+import io.swagger.annotations.ApiModelProperty;
+
+import java.io.Serializable;
+
+/**
+ * @author dimengzhe
+ * @date 2021/9/3 16:41
+ * @description
+ */
+
+public class PagerQuery<T extends Query> implements Serializable {
+
+    @ApiModelProperty(value = "当前页号", example = "1")
+    private long current = 1L;
+
+    @ApiModelProperty(value = "每页记录数", example = "10")
+    private long size = 10L;
+
+    @ApiModelProperty(value = "标识符")
+    private Integer identifier;
+
+    @ApiModelProperty("查询条件的项")
+    private T params;
+
+    public PagerQuery() {
+    }
+
+    public PagerQuery(long current) {
+        this.current = current;
+    }
+
+    public PagerQuery(long current, long size) {
+        this.size = size;
+        this.current = current;
+    }
+
+    public long getSize() {
+        return size;
+    }
+
+    public PagerQuery setSize(long size) {
+        this.size = size;
+        return this;
+    }
+
+    public long getCurrent() {
+        return current;
+    }
+
+    public PagerQuery setCurrent(long current) {
+        this.current = current;
+        return this;
+    }
+
+    public T getParams() {
+        return params;
+    }
+
+    public PagerQuery setParams(T params) {
+        this.params = params;
+        return this;
+    }
+
+    public Integer getIdentifier() {
+        return identifier;
+    }
+
+    public void setIdentifier(Integer identifier) {
+        this.identifier = identifier;
+    }
+
+    public void fromPagerQuery(PagerQuery s_query) {
+        this.setCurrent(s_query.getCurrent()).setSize(s_query.getSize()).setParams(params.fromMap(s_query.getParams().toMap()));
+    }
+}
diff --git a/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/query/Query.java b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/query/Query.java
new file mode 100644
index 0000000..b193e23
--- /dev/null
+++ b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/query/Query.java
@@ -0,0 +1,13 @@
+package com.yxt.demo.common.core.query;
+
+import com.yxt.demo.common.core.vo.Vo;
+
+/**
+ * @author dimengzhe
+ * @date 2021/9/3 16:41
+ * @description
+ */
+
+public interface Query extends Vo {
+
+}
diff --git a/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/vo/PagerVo.java b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/vo/PagerVo.java
new file mode 100644
index 0000000..f770b3d
--- /dev/null
+++ b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/vo/PagerVo.java
@@ -0,0 +1,100 @@
+package com.yxt.demo.common.core.vo;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+
+import java.io.Serializable;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * @author dimengzhe
+ * @date 2021/9/3 16:24
+ * @description
+ */
+@ApiModel(description = "返回的分页结果")
+public class PagerVo<T> implements Serializable {
+
+    @ApiModelProperty("总页数")
+    private long pages = 1L;
+    @ApiModelProperty("总记录数")
+    private long total = 0L;
+    @ApiModelProperty("每页记录数")
+    private long size = 15L;
+    @ApiModelProperty("当前页号")
+    private long current = 1L;
+    @ApiModelProperty(value = "标识符")
+    private Integer identifier;
+
+    @ApiModelProperty("当前页的数据")
+    private List<T> records = Collections.emptyList();
+
+    public PagerVo() {
+        this.pages = 1L;
+        this.total = 0L;
+        this.size = 10L;
+        this.current = 1L;
+        this.records = Collections.emptyList();
+    }
+
+    public PagerVo(long current) {
+        this.pages = 1L;
+        this.total = 0L;
+        this.size = 10L;
+        this.current = current;
+        this.records = Collections.emptyList();
+    }
+
+    public long getPages() {
+        return pages;
+    }
+
+    public PagerVo<T> setPages(long pages) {
+        this.pages = pages;
+        return this;
+    }
+
+    public long getTotal() {
+        return total;
+    }
+
+    public PagerVo<T> setTotal(long total) {
+        this.total = total;
+        return this;
+    }
+
+    public long getSize() {
+        return size;
+    }
+
+    public PagerVo<T> setSize(long size) {
+        this.size = size;
+        return this;
+    }
+
+    public long getCurrent() {
+        return current;
+    }
+
+    public PagerVo<T> setCurrent(long current) {
+        this.current = current;
+        return this;
+    }
+
+    public List<T> getRecords() {
+        return records;
+    }
+
+    public PagerVo<T> setRecords(List<T> records) {
+        this.records = records;
+        return this;
+    }
+
+    public Integer getIdentifier() {
+        return identifier;
+    }
+
+    public void setIdentifier(Integer identifier) {
+        this.identifier = identifier;
+    }
+}
diff --git a/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/vo/Vo.java b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/vo/Vo.java
new file mode 100644
index 0000000..70b9673
--- /dev/null
+++ b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/common/core/vo/Vo.java
@@ -0,0 +1,28 @@
+package com.yxt.demo.common.core.vo;
+
+import cn.hutool.core.bean.BeanUtil;
+
+import javax.swing.text.html.parser.Entity;
+import java.io.Serializable;
+import java.util.Map;
+
+/**
+ * @author dimengzhe
+ * @date 2021/9/3 16:21
+ * @description
+ */
+
+public interface Vo extends Serializable {
+
+    default Map<String, Object> toMap() {
+        return BeanUtil.beanToMap(this);
+    }
+
+    default <V extends Vo> V fromMap(Map<String, Object> map) {
+        return (V) BeanUtil.fillBeanWithMap(map, this, false);
+    }
+
+    default <E extends Entity> void fromEntity(E e) {
+        BeanUtil.copyProperties(e, this);
+    }
+}
diff --git a/demo-system/demo-system-biz/src/main/java/com/yxt/demo/system/biz/sys_user/SysUserService.java b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/system/biz/sys_user/SysUserService.java
index fe6d861..1a98ab4 100644
--- a/demo-system/demo-system-biz/src/main/java/com/yxt/demo/system/biz/sys_user/SysUserService.java
+++ b/demo-system/demo-system-biz/src/main/java/com/yxt/demo/system/biz/sys_user/SysUserService.java
@@ -9,7 +9,6 @@ import com.yxt.demo.system.api.sys_user.SysUser;
 import com.yxt.demo.system.api.sys_user.SysUserDto;
 import com.yxt.demo.system.api.sys_user.SysUserLoginQuery;
 import com.yxt.demo.system.biz.sys_info.SysInfoService;
-import jdk.nashorn.internal.ir.IfNode;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;