feat: 集成 Spring AI 框架，实现基础的 AI 写作功能

src/main/java/io/github/xxyopen/novel/controller/author/AuthorAiController.java

@@ -0,0 +1,83 @@
+package io.github.xxyopen.novel.controller.author;
+
+import io.github.xxyopen.novel.core.common.resp.RestResp;
+import io.github.xxyopen.novel.core.constant.ApiRouterConsts;
+import io.github.xxyopen.novel.core.constant.SystemConfigConsts;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+import org.springframework.ai.chat.client.ChatClient;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * 作家后台-AI模块API控制器
+ *
+ * @author xiongxiaoyang
+ * @date 2025/2/19
+ */
+@Tag(name = "AiController", description = "作家后台-AI模块")
+@SecurityRequirement(name = SystemConfigConsts.HTTP_AUTH_HEADER_NAME)
+@RestController
+@RequestMapping(ApiRouterConsts.API_AUTHOR_AI_URL_PREFIX)
+@RequiredArgsConstructor
+public class AuthorAiController {
+
+    private final ChatClient chatClient;
+
+    /**
+     * AI扩写
+     */
+    @Operation(summary = "AI扩写接口")
+    @PostMapping("/expand")
+    public RestResp<String> expandText(@RequestParam("text") String text, @RequestParam("ratio") Double ratio) {
+        String prompt = "请将以下文本扩写为原长度的" + ratio/100 + "倍：" + text;
+        return RestResp.ok(chatClient.prompt()
+            .user(prompt)
+            .call()
+            .content());
+    }
+
+    /**
+     * AI缩写
+     */
+    @Operation(summary = "AI缩写接口")
+    @PostMapping("/condense")
+    public RestResp<String> condenseText(@RequestParam("text") String text, @RequestParam("ratio") Integer ratio) {
+        String prompt = "请将以下文本缩写为原长度的" + 100/ratio + "分之一：" + text;
+        return RestResp.ok(chatClient.prompt()
+            .user(prompt)
+            .call()
+            .content());
+    }
+
+    /**
+     * AI续写
+     */
+    @Operation(summary = "AI续写接口")
+    @PostMapping("/continue")
+    public RestResp<String> continueText(@RequestParam("text") String text, @RequestParam("length") Integer length) {
+        String prompt = "请续写以下文本，续写长度约为" + length + "字：" + text;
+        return RestResp.ok(chatClient.prompt()
+            .user(prompt)
+            .call()
+            .content());
+    }
+
+    /**
+     * AI润色
+     */
+    @Operation(summary = "AI润色接口")
+    @PostMapping("/polish")
+    public RestResp<String> polishText(@RequestParam("text") String text) {
+        String prompt = "请润色优化以下文本，保持原意：" + text;
+        return RestResp.ok(chatClient.prompt()
+            .user(prompt)
+            .call()
+            .content());
+    }
+
+}

src/main/java/io/github/xxyopen/novel/core/config/AiConfig.java

@@ -0,0 +1,47 @@
+package io.github.xxyopen.novel.core.config;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.ai.chat.client.ChatClient;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.client.SimpleClientHttpRequestFactory;
+import org.springframework.web.client.RestClient;
+
+/**
+ * Ai 相关配置
+ *
+ * @author xiongxiaoyang
+ * @date 2025/2/19
+ */
+@Configuration
+@Slf4j
+public class AiConfig {
+
+    /**
+     * 目的：配置自定义的 RestClientBuilder 对象
+     * <p>
+     * 原因：Spring AI 框架的 ChatClient 内部通过 RestClient（Spring Framework 6 和 Spring Boot 3 中引入） 发起 HTTP REST 请求与远程的大模型服务进行通信，
+     * 如果项目中没有配置自定义的 RestClientBuilder 对象， 那么在 RestClient 的自动配置类 org.springframework.boot.autoconfigure.web.client.RestClientAutoConfiguration
+     * 中配置的 RestClientBuilder 对象会使用 Spring 容器中提供的 HttpMessageConverters， 由于本项目中配置了 spring.jackson.generator.write-numbers-as-strings
+     * = true， 所以 Spring 容器中的 HttpMessageConverters 在 RestClient 发起 HTTP REST 请求转换 Java 对象为 JSON 字符串时会自动将 Number 类型的
+     * Java 对象属性转换为字符串而导致请求参数错误
+     * <p>
+     * 示例："temperature": 0.7 =》"temperature": "0.7"
+     * {"code":20015,"message":"The parameter is invalid. Please check again.","data":null}
+     */
+    @Bean
+    public RestClient.Builder restClientBuilder() {
+        SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
+        // 连接超时时间
+        factory.setConnectTimeout(5000);
+        // 读取超时时间
+        factory.setReadTimeout(60000);
+        return RestClient.builder().requestFactory(factory);
+    }
+
+    @Bean
+    public ChatClient chatClient(ChatClient.Builder chatClientBuilder) {
+        return chatClientBuilder.build();
+    }
+
+}

src/main/java/io/github/xxyopen/novel/core/constant/ApiRouterConsts.java

@@ -62,6 +62,11 @@ public class ApiRouterConsts {
      */
     public static final String SEARCH_URL_PREFIX = "/search";
 
+    /**
+     * AI模块请求路径前缀
+     */
+    public static final String AI_URL_PREFIX = "/ai";
+
     /**
      * 前台门户首页API请求路径前缀
      */
@@ -94,4 +99,10 @@ public class ApiRouterConsts {
     public static final String API_FRONT_SEARCH_URL_PREFIX =
         API_FRONT_URL_PREFIX + SEARCH_URL_PREFIX;
 
+    /**
+     * 作家后台AI相关API请求路径前缀
+     */
+    public static final String API_AUTHOR_AI_URL_PREFIX = API_AUTHOR_URL_PREFIX + AI_URL_PREFIX;
+
+
 }

src/main/resources/application.yml

@@ -34,6 +34,18 @@ server:
   # 端口号
   port: 8888
 
+--- #--------------------- Spring AI 配置----------------------
+spring:
+  ai:
+    openai:
+      api-key:
+      base-url: https://api.siliconflow.cn
+      chat:
+        options:
+          model: deepseek-ai/DeepSeek-R1-Distill-Llama-8B
+
+
+
 --- #---------------------数据库配置---------------------------
 spring:
   datasource: