增加单文件上传，根据md5获取文件信息

hsweb-system/hsweb-system-file/hsweb-system-file-controller/src/main/java/org/hswebframework/web/controller/file/FileController.java

@@ -4,6 +4,7 @@ import com.alibaba.fastjson.JSON;
 import org.hswebframework.expands.compress.Compress;
 import org.hswebframework.expands.compress.zip.ZIPWriter;
 import org.hswebframework.utils.StringUtils;
+import org.hswebframework.web.BusinessException;
 import org.hswebframework.web.NotFoundException;
 import org.hswebframework.web.authorization.Authentication;
 import org.hswebframework.web.authorization.annotation.Authorize;
@@ -30,11 +31,15 @@ import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 /**
- * TODO 完成注释
+ * 文件操作控制器，提供文件上传下载等操作
  *
  * @author zhouhao
+ * @see FileService
+ * @since 3.0
  */
 @RestController
 @RequestMapping("${hsweb.web.mappings.file:file}")
@@ -203,30 +208,48 @@ public class FileController {
      * 上传文件,支持多文件上传.获取到文件流后,调用{@link org.hswebframework.web.service.file.FileService#saveFile(InputStream, String, String, String)}进行文件保存
      * 上传成功后,将返回资源信息如:[{"id":"fileId","name":"fileName","md5":"md5"}]
      *
-     * @param files 文件列表
+     * @param files 上传的文件
      * @return 文件上传结果.
-     * @throws IOException 保存文件错误
+     */
+    @PostMapping(value = "/upload-multi")
+    @AccessLogger("上传多个文件")
+    @Authorize(action = "upload")
+    public ResponseMessage<List<FileInfoEntity>> upload(@RequestParam("files") MultipartFile[] files) {
+        return ResponseMessage.ok(Stream.of(files)
+                .map(this::upload)
+                .map(ResponseMessage::getResult)
+                .collect(Collectors.toList()))
+                .include(FileInfoEntity.class, FileInfoEntity.id, FileInfoEntity.name, FileInfoEntity.md5);
+    }
+
+    /**
+     * 上传单个文件
+     *
+     * @param file 上传文件
+     * @return 上传结果
      */
     @PostMapping(value = "/upload")
     @AccessLogger("上传文件")
     @Authorize(action = "upload")
-    public ResponseMessage<List<FileInfoEntity>> upload(MultipartFile[] files) throws IOException {
-        if (logger.isInfoEnabled())
-            logger.info(String.format("start upload , file number:%s", files.length));
-        List<FileInfoEntity> resourcesList = new LinkedList<>();
-        Authentication authentication = Authentication.current().orElseThrow(null);
+    public ResponseMessage<FileInfoEntity> upload(@RequestParam("file") MultipartFile file) {
+        List<FileInfoEntity> fileInfoList = new LinkedList<>();
+        Authentication authentication = Authentication.current().orElse(null);
         String creator = authentication == null ? null : authentication.getUser().getId();
-        for (MultipartFile file : files) {
-            if (!file.isEmpty()) {
-                if (logger.isInfoEnabled())
-                    logger.info("start write file:{}", file.getOriginalFilename());
-                String fileName = file.getOriginalFilename();
-                FileInfoEntity resources = fileService.saveFile(file.getInputStream(), fileName, file.getContentType(), creator);
-                resourcesList.add(resources);
-            }
-        }//响应上传成功的资源信息
-        return ResponseMessage.ok(resourcesList)
-                .include(FileInfoEntity.class, FileInfoEntity.id, FileInfoEntity.name, FileInfoEntity.id);
+        if (file.isEmpty()) {
+            return ResponseMessage.ok();
+        }
+        if (logger.isInfoEnabled())
+            logger.info("start write file:{}", file.getOriginalFilename());
+        String fileName = file.getOriginalFilename();
+        FileInfoEntity fileInfo;
+        try {
+            fileInfo = fileService.saveFile(file.getInputStream(), fileName, file.getContentType(), creator);
+        } catch (IOException e) {
+            throw new BusinessException("save file error", e);
+        }
+        fileInfoList.add(fileInfo);
+        return ResponseMessage.ok(fileInfo)
+                .include(FileInfoEntity.class, FileInfoEntity.id, FileInfoEntity.name, FileInfoEntity.md5);
     }
 
     @PostMapping(value = "/upload-static")
@@ -236,4 +259,11 @@ public class FileController {
         if (file.isEmpty()) return ResponseMessage.ok();
         return ResponseMessage.ok(fileService.saveStaticFile(file.getInputStream(), file.getOriginalFilename()));
     }
+
+    @GetMapping(value = "/md5/{md5}")
+    @AccessLogger("根据MD5获取文件信息")
+    public ResponseMessage<FileInfoEntity> uploadStatic(@PathVariable String md5) throws IOException {
+        return ResponseMessage
+                .ok(fileInfoService.selectByMd5(md5));
+    }
 }