fix: web search 插件读取pdf文件

src/main/java/cn/com/poc/thirdparty/resource/demand/ai/function/web_seach/WebSearchFunction.java

@@ -28,6 +28,8 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Component;
 
+import java.io.File;
+import java.io.IOException;
 import java.util.List;
 import java.util.concurrent.*;
 
@@ -115,7 +117,17 @@ public class WebSearchFunction extends AbstractLargeModelFunction {
             for (Result item : items) {
                 threadPoolExecutor.submit(() -> {
                     String link = item.getLink();
-                    String htmlContent = DocumentLoad.htmlToMarkdown(link);
+                    String htmlContent = StringUtils.EMPTY;
+                    if (link.endsWith("pdf")) {
+                        try {
+                            File file = DocumentLoad.downloadURLDocument(link);
+                            htmlContent = DocumentLoad.loadPDF(file);
+                        } catch (IOException e) {
+                            throw new RuntimeException(e);
+                        }
+                    } else {
+                        htmlContent = DocumentLoad.htmlToMarkdown(link);
+                    }
                     if (StringUtils.isNotBlank(htmlContent)) {
                         htmlContent = htmlContent.replaceAll(StringUtils.SPACE, StringUtils.EMPTY);
                         if (htmlContent.length() > 1500) {