简单调整，并去除 lombok。

pom.xml

@@ -12,18 +12,11 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <lombok.version>1.18.24</lombok.version>
         <jackson.version>2.13.4</jackson.version>
-        <google-jsr305.version>3.0.2</google-jsr305.version>
         <guava.version>31.1-jre</guava.version>
     </properties>
 
     <dependencies>
-        <dependency>
-            <groupId>com.google.code.findbugs</groupId>
-            <artifactId>jsr305</artifactId>
-            <version>${google-jsr305.version}</version>
-        </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
@@ -34,12 +27,6 @@
             <artifactId>jackson-annotations</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
-            <optional>true</optional>
-        </dependency>
 
         <dependency>
             <groupId>org.junit.jupiter</groupId>

src/main/java/xyz/zhouxy/plusone/commons/util/PageDTO.java

@@ -18,9 +18,6 @@ package xyz.zhouxy.plusone.commons.util;
 
 import java.util.List;
 
-import lombok.Setter;
-import lombok.ToString;
-
 /**
  * 返回分页查询的结果
  *
@@ -29,8 +26,6 @@ import lombok.ToString;
  * @author <a href="https://gitee.com/zhouxy108">ZhouXY</a>
  * @see PagingAndSortingQueryParams
  */
-@ToString
-@Setter
 public class PageDTO<T> {
 
     private Long total;
@@ -53,4 +48,20 @@ public class PageDTO<T> {
         return content;
     }
 
+    // Setters
+
+    public void setTotal(Long total) {
+        this.total = total;
+    }
+
+    public void setContent(List<T> content) {
+        this.content = content;
+    }
+
+    // Setters end
+
+    @Override
+    public String toString() {
+        return "PageDTO [total=" + total + ", content=" + content + "]";
+    }
 }

src/main/java/xyz/zhouxy/plusone/commons/util/PagingAndSortingQueryParams.java

@@ -20,8 +20,6 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 
-import lombok.Setter;
-
 /**
  * 分页排序查询参数
  *
@@ -33,7 +31,6 @@ import lombok.Setter;
  * @author <a href="https://gitee.com/zhouxy108">ZhouXY</a>
  * @see PageDTO
  */
-@Setter
 public class PagingAndSortingQueryParams {
 
     protected String orderBy;
@@ -66,4 +63,19 @@ public class PagingAndSortingQueryParams {
         return (getPageNum() - 1) * getSize();
     }
 
+    // Setters
+
+    public void setOrderBy(String orderBy) {
+        this.orderBy = orderBy;
+    }
+
+    public void setSize(Integer size) {
+        this.size = size;
+    }
+
+    public void setPageNum(Long pageNum) {
+        this.pageNum = pageNum;
+    }
+
+    // Setters end
 }

src/main/java/xyz/zhouxy/plusone/commons/util/RestfulResult.java

@@ -21,20 +21,12 @@ import java.util.function.Supplier;
 
 import com.fasterxml.jackson.annotation.JsonInclude;
 
-import lombok.AccessLevel;
-import lombok.AllArgsConstructor;
-import lombok.Getter;
-import lombok.ToString;
-
 /**
  * 对返回给前端的数据进行封装
  *
  * @author <a href="https://gitee.com/zhouxy108">ZhouXY</a>
  */
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@ToString
-@Getter
-@AllArgsConstructor(access = AccessLevel.PRIVATE)
 public class RestfulResult {
 
     public static final int SUCCESS_STATUS = 2000000;
@@ -90,6 +82,37 @@ public class RestfulResult {
         return isSuccess.getAsBoolean() ? success.get() : error.get();
     }
 
+    // Constructors
+
+    private RestfulResult(Object status, String message, Object data) {
+        this.status = status;
+        this.message = message;
+        this.data = data;
+    }
+
+    // Constructors end
+
+    // Getters
+
+    public Object getStatus() {
+        return status;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public Object getData() {
+        return data;
+    }
+
+    // Getters end
+
+    @Override
+    public String toString() {
+        return "RestfulResult [status=" + status + ", message=" + message + ", data=" + data + "]";
+    }
+
     // Builder
     public static Builder successIf(final boolean condition) {
         return successIf(() -> condition);