工具调用

pom.xml

@@ -60,6 +60,11 @@
             <artifactId>langchain4j-spring-boot-starter</artifactId>
             <version>1.1.0-beta7</version>
         </dependency>
+        <dependency>
+            <groupId>org.jsoup</groupId>
+            <artifactId>jsoup</artifactId>
+            <version>1.20.1</version>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/com/huangge1199/ai/config/LangChainConfig.java

@@ -1,6 +1,7 @@
 package com.huangge1199.ai.config;
 
 import com.huangge1199.ai.service.LangChainService;
+import com.huangge1199.ai.tool.InterviewQuestionTool;
 import dev.langchain4j.memory.ChatMemory;
 import dev.langchain4j.memory.chat.MessageWindowChatMemory;
 import dev.langchain4j.model.chat.ChatModel;
@@ -33,6 +34,7 @@ public class LangChainConfig {
                 .chatMemory(chatMemory)
                 .chatMemoryProvider(memoryId->MessageWindowChatMemory.withMaxMessages(10))
                 .contentRetriever(contentRetriever)
+                .tools(new InterviewQuestionTool())
                 .build();
     }
 }

src/main/java/com/huangge1199/ai/tool/InterviewQuestionTool.java

@@ -0,0 +1,59 @@
+package com.huangge1199.ai.tool;
+
+import dev.langchain4j.agent.tool.P;
+import dev.langchain4j.agent.tool.Tool;
+import lombok.extern.slf4j.Slf4j;
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+import org.jsoup.select.Elements;
+
+import java.io.IOException;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * InterviewQuestionTool
+ *
+ * @author huangge1199
+ * @since 2025/7/12 13:15:28
+ */
+@Slf4j
+public class InterviewQuestionTool {
+
+    /**
+     * 从面试鸭网站获取关键词相关的面试题列表
+     *
+     * @param keyword 搜索关键词（如"redis"、"java多线程"）
+     * @return 面试题列表，若失败则返回错误信息
+     */
+    @Tool(name = "interviewQuestionSearch", value = """
+            Retrieves relevant interview questions from mianshiya.com based on a keyword.
+            Use this tool when the user asks for interview questions about specific technologies,
+            programming concepts, or job-related topics. The input should be a clear search term.
+            """
+    )
+    public String searchInterviewQuestions(@P(value = "the keyword to search") String keyword) {
+        List<String> questions = new ArrayList<>();
+        // 构建搜索URL（编码关键词以支持中文）
+        String encodedKeyword = URLEncoder.encode(keyword, StandardCharsets.UTF_8);
+        String url = "https://www.mianshiya.com/search/all?searchText=" + encodedKeyword;
+        // 发送请求并解析页面
+        Document doc;
+        try {
+            doc = Jsoup.connect(url)
+                    .userAgent("Mozilla/5.0")
+                    .timeout(5000)
+                    .get();
+        } catch (IOException e) {
+            log.error("get web error", e);
+            return e.getMessage();
+        }
+        // 提取面试题
+        Elements questionElements = doc.select(".ant-table-cell > a");
+        questionElements.forEach(el -> questions.add(el.text().trim()));
+        return String.join("\n", questions);
+    }
+}