feat(文件系统): 文件了文件映射目录 网页html文件放到根目录下的htmls文件下的

.gitignore

 HELP.md
 target/
+htmls/
 !.mvn/wrapper/maven-wrapper.jar
 !**/src/main/**/target/
 !**/src/test/**/target/

kt-web/src/main/java/org/matrix/fs/controller/FileSysController.java

+package org.matrix.fs.controller;
+
+import javafx.scene.control.Alert;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.core.io.InputStreamResource;
+import org.springframework.core.io.UrlResource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.util.StringUtils;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.servlet.http.HttpServletRequest;
+import java.io.IOException;
+
+/**
+ * FileSysController.
+ *
+ * @author Matrix <xhyrzldf@gmail.com>
+ * @since 2022/3/17 at 2:49 PM
+ * Suffering is the most powerful teacher of life.
+ */
+@Slf4j
+@RestController
+@RequestMapping
+public class FileSysController {
+
+    @GetMapping("/report/{fileName}")
+    public ResponseEntity downloadAlertWeb(HttpServletRequest request,
+                                           @PathVariable String fileName) {
+        //1.拼接 - > url
+        String fileUrl = "file:" + System.getProperty("user.dir") + "/htmls/" +fileName;
+        try {
+            UrlResource resource = new UrlResource(fileUrl);
+
+            HttpHeaders headers = new HttpHeaders();
+            headers.add("Cache-Control", "no-cache, no-store, must-revalidate");
+            headers.add("Content-Disposition",
+                    "inline;filename=\"" + fileName + "\"");
+            headers.add("Pragma", "no-cache");
+            headers.add("Expires", "0");
+            String contentType = request.getServletContext().getMimeType(resource.getFile().getAbsolutePath());
+            return ResponseEntity.ok().headers(headers).contentLength(resource.contentLength())
+                    .contentType(MediaType.parseMediaType(contentType))
+                    .body(new InputStreamResource(resource.getInputStream()));
+        } catch (IOException e) {
+            log.info("[文件模块] 没有读取到文件名 = {},文件地址 = {} 的文件",fileName,fileUrl);
+            HttpHeaders falseHeaders = new HttpHeaders();
+            falseHeaders.add("Cache-Control", "no-cache, no-store, must-revalidate");
+            falseHeaders.add("Content-Disposition", "inline;filename=\"" + "404.jpg" + "\"");
+            falseHeaders.add("Pragma", "no-cache");
+            falseHeaders.add("Expires", "0");
+            return ResponseEntity.ok().headers(falseHeaders).contentType(MediaType.parseMediaType("image/jpeg"))
+                    .body("没有找到该资源");
+        }
+    }
+}