修改类名，调整包结构。

src/main/java/xyz/zhouxy/plusone/commons/model/ValidatableStringRecord.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package xyz.zhouxy.plusone.commons.model;
+
+import java.io.Serializable;
+import java.util.Objects;
+import java.util.regex.Pattern;
+
+import com.google.common.base.Preconditions;
+
+import xyz.zhouxy.plusone.commons.util.RegexTools;
+
+/**
+ * 带校验的字符串值对象
+ *
+ * @author <a href="http://zhouxy.xyz:3000/ZhouXY108">ZhouXY</a>
+ * @since 0.1.0
+ */
+public abstract class ValidatableStringRecord
+        implements Comparable<ValidatableStringRecord>, Serializable {
+    private final String value;
+
+    protected ValidatableStringRecord(String value, Pattern pattern) {
+        Preconditions.checkNotNull(pattern, "The pattern must not be null.");
+        Preconditions.checkNotNull(value, "The value must not be null.");
+        Preconditions.checkArgument(RegexTools.matches(value, pattern));
+        this.value = value;
+    }
+
+    /**
+     * 值对象的字符串值。
+     * 
+     * @return 字符串（不为空）
+     */
+    public final String value() {
+        return this.value;
+    }
+
+    @Override
+    public int compareTo(ValidatableStringRecord o) {
+        return this.value.compareTo(o.value);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(value);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        ValidatableStringRecord other = (ValidatableStringRecord) obj;
+        return Objects.equals(value, other.value);
+    }
+
+    @Override
+    public String toString() {
+        return this.value();
+    }
+
+    private static final long serialVersionUID = -8365241662025469652L;
+}

src/main/java/xyz/zhouxy/plusone/commons/model/dto/PageResult.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package xyz.zhouxy.plusone.commons.model.dto;
+
+import java.util.List;
+
+import com.google.common.base.Preconditions;
+
+import xyz.zhouxy.plusone.commons.annotation.StaticFactoryMethod;
+
+/**
+ * 返回分页查询的结果
+ *
+ * @param <T> 内容列表的元素类型
+ *
+ * @author <a href="http://zhouxy.xyz:3000/ZhouXY108">ZhouXY</a>
+ * @see PagingAndSortingQueryParams
+ */
+public class PageResult<T> {
+
+    private final long total;
+
+    private final List<T> content;
+
+    private PageResult(List<T> content, long total) {
+        Preconditions.checkNotNull(content, "Content must not be null.");
+        this.content = content;
+        this.total = total;
+    }
+
+    @StaticFactoryMethod(PageResult.class)
+    public static <T> PageResult<T> of(List<T> content, long total) {
+        return new PageResult<>(content, total);
+    }
+
+    public long getTotal() {
+        return total;
+    }
+
+    public List<T> getContent() {
+        return content;
+    }
+
+    @Override
+    public String toString() {
+        return "PageDTO [total=" + total + ", content=" + content + "]";
+    }
+}

src/main/java/xyz/zhouxy/plusone/commons/model/dto/UnifiedResponse.java

@@ -0,0 +1,219 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package xyz.zhouxy.plusone.commons.model.dto;
+
+import java.util.Objects;
+import java.util.function.BooleanSupplier;
+import java.util.function.Supplier;
+
+import javax.annotation.Nullable;
+
+import com.google.common.base.Preconditions;
+
+import xyz.zhouxy.plusone.commons.base.IWithCode;
+
+/**
+ * 统一结果，对返回给前端的数据进行封装。
+ *
+ * @author <a href="http://zhouxy.xyz:3000/ZhouXY108">ZhouXY</a>
+ */
+public abstract class UnifiedResponse {
+
+    private Object status;
+    private String message;
+
+    private @Nullable Object data;
+
+    public static UnifiedResponse success() {
+        return new SuccessResult();
+    }
+
+    public static UnifiedResponse success(@Nullable String message) {
+        return new SuccessResult(message);
+    }
+
+    public static UnifiedResponse success(@Nullable String message, @Nullable Object data) {
+        return new SuccessResult(message, data);
+    }
+
+    public static UnifiedResponse error(@Nullable String message) {
+        return new ErrorResult(message);
+    }
+
+    public static UnifiedResponse error(@Nullable String message, @Nullable Object data) {
+        return new ErrorResult(message, data);
+    }
+
+    public static UnifiedResponse error(Object status, @Nullable String message) {
+        return new ErrorResult(status, message);
+    }
+
+    public static UnifiedResponse error(Object status, @Nullable String message, @Nullable Object data) {
+        return new ErrorResult(status, message, data);
+    }
+
+    public static UnifiedResponse error(Object status, Throwable e) {
+        return new ErrorResult(status, e);
+    }
+
+    public static <E extends Throwable & IWithCode<?>> UnifiedResponse error(E e) {
+        return new ErrorResult(e);
+    }
+
+    public static UnifiedResponse of(Object status, @Nullable String message) {
+        return new CustomResult(status, message);
+    }
+
+    public static UnifiedResponse of(Object status, @Nullable String message, @Nullable Object data) {
+        return new CustomResult(status, message, data);
+    }
+
+    public static UnifiedResponse of(final boolean isSuccess,
+            final Supplier<SuccessResult> successResult, final Supplier<ErrorResult> errorResult) {
+        Preconditions.checkNotNull(successResult, "Success supplier must not be null.");
+        Preconditions.checkNotNull(errorResult, "Error supplier must not be null.");
+        return isSuccess ? successResult.get() : errorResult.get();
+    }
+
+    public static UnifiedResponse of(final BooleanSupplier isSuccess,
+            final Supplier<SuccessResult> successResult, final Supplier<ErrorResult> errorResult) {
+        Preconditions.checkNotNull(isSuccess, "Conditions for success must not be null.");
+        Preconditions.checkNotNull(successResult, "Success supplier must not be null.");
+        Preconditions.checkNotNull(errorResult, "Error supplier must not be null.");
+        return isSuccess.getAsBoolean() ? successResult.get() : errorResult.get();
+    }
+
+    protected UnifiedResponse(Object status, @Nullable String message) {
+        setStatus(status);
+        setMessage(message);
+    }
+
+    protected UnifiedResponse(Object status, @Nullable String message, @Nullable Object data) {
+        setStatus(status);
+        setMessage(message);
+        setData(data);
+    }
+
+    private void setStatus(Object status) {
+        this.status = Objects.requireNonNull(status);
+    }
+
+    private void setMessage(@Nullable String message) {
+        this.message = message == null ? "" : message;
+    }
+
+    private void setData(@Nullable Object data) {
+        this.data = data;
+    }
+
+    // Constructors end
+
+    // Getters
+
+    public Object getStatus() {
+        return status;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    @Nullable
+    public Object getData() {
+        return data;
+    }
+
+    // Getters end
+
+    @Override
+    public String toString() {
+        return String.format("{status: %s, message: \"%s\", data: %s}",
+                transValue(this.status), this.message, transValue(this.data));
+    }
+
+    private static String transValue(Object value) {
+        if (value == null) {
+            return null;
+        }
+        if (value instanceof String) {
+            return "\"" + value + "\"";
+        }
+        return String.valueOf(value);
+    }
+
+    protected static class SuccessResult extends UnifiedResponse {
+        public static final String SUCCESS_STATUS = "2000000";
+
+        private static final String DEFAULT_SUCCESS_MSG = "SUCCESS";
+
+        SuccessResult() {
+            super(SUCCESS_STATUS, DEFAULT_SUCCESS_MSG);
+        }
+
+        SuccessResult(@Nullable String message) {
+            super(SUCCESS_STATUS, message);
+        }
+
+        SuccessResult(@Nullable String message, @Nullable Object data) {
+            super(SUCCESS_STATUS, message, data);
+        }
+    }
+
+    protected static class ErrorResult extends UnifiedResponse {
+        public static final String DEFAULT_ERROR_STATUS = "9999999";
+
+        ErrorResult(@Nullable String message) {
+            super(DEFAULT_ERROR_STATUS, message);
+        }
+
+        ErrorResult(@Nullable String message, @Nullable Object data) {
+            super(DEFAULT_ERROR_STATUS, message, data);
+        }
+
+        ErrorResult(Object status, @Nullable String message) {
+            super(status, message);
+        }
+
+        ErrorResult(Object status, @Nullable String message, @Nullable Object data) {
+            super(status, message, data);
+        }
+
+        ErrorResult(Object status, Throwable e) {
+            super(status, Objects.requireNonNull(e).getMessage());
+        }
+
+        <E extends Throwable & IWithCode<?>> ErrorResult(E e) {
+            super(e.getCode(), e.getMessage());
+        }
+    }
+
+    /**
+     * 自定义结果
+     *
+     * @author zhouxy
+     */
+    protected static class CustomResult extends UnifiedResponse {
+
+        CustomResult(Object status, @Nullable String message) {
+            super(status, message);
+        }
+
+        CustomResult(Object status, @Nullable String message, @Nullable Object data) {
+            super(status, message, data);
+        }
+    }
+}