pdf文件预览接口

system/system-biz/src/main/java/org/jeecg/modules/system/controller/CommonController.java

@@ -22,7 +22,6 @@ import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.multipart.MultipartHttpServletRequest;
 import org.springframework.web.servlet.HandlerMapping;
-import org.springframework.web.servlet.ModelAndView;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -222,14 +221,42 @@ public class CommonController {
     }
 
     /**
-     * @param modelAndView
-     * @return
-     * @功能：pdf预览Iframe
+     * @功能：pdf预览
      */
-    @RequestMapping("/pdf/pdfPreviewIframe")
-    public ModelAndView pdfPreviewIframe(ModelAndView modelAndView) {
-        modelAndView.setViewName("pdfPreviewIframe");
-        return modelAndView;
+    @RequestMapping("/pdf/preview/**")
+    public void pdfPreviewIframe(HttpServletRequest request, HttpServletResponse response) {
+        String imgPath = extractPathFromPattern(request);
+        // 其余处理略
+        InputStream inputStream = null;
+        OutputStream outputStream = null;
+        try {
+            inputStream = MinioUtil.getMinioFile(imgPath);
+            outputStream = response.getOutputStream();
+            byte[] buf = new byte[1024];
+            int len;
+            while ((len = inputStream.read(buf)) > 0) {
+                outputStream.write(buf, 0, len);
+            }
+            response.flushBuffer();
+        } catch (Exception e) {
+            log.error("预览文件失败" + e.getMessage());
+        } finally {
+            if (inputStream != null) {
+                try {
+                    inputStream.close();
+                } catch (IOException e) {
+                    log.error(e.getMessage(), e);
+                }
+            }
+            if (outputStream != null) {
+                try {
+                    outputStream.close();
+                } catch (IOException e) {
+                    log.info("imgPath：{}", imgPath);
+                    log.error(e.getMessage(), e);
+                }
+            }
+        }
     }
 
     /**