新增

src/main/java/com/steerinfo/dil/controller/UniversalController.java

@@ -27,9 +27,13 @@ import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.multipart.MultipartRequest;
 
 
+import javax.servlet.http.HttpServletResponse;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 import java.math.BigDecimal;
+import java.net.URLEncoder;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -1186,6 +1190,37 @@ public class UniversalController extends BaseRESTfulController {
         }
     }
 
+    @ApiOperation("获取图片通用方法")
+    @GetMapping("/getFile")
+    public RESTfulResult getFile(@RequestParam("path") String path, HttpServletResponse response) throws Exception {
+            try {
+                File file = new File(path);
+                if(file.isDirectory()){
+                    return failed("该路径是文件夹而非文件！");
+                }
+                FileInputStream inputStream = new FileInputStream(path);
+                byte[] data = new byte[inputStream.available()];
+                inputStream.read(data);
+                response.setCharacterEncoding("UTF-8");
+                response.setContentType("application/octet-stream;charset=UTF-8");
+                String diskfilename = URLEncoder.encode(file.getName(),"UTF-8") ;
+                response.setHeader("Content-Disposition", "attachment; filename=\"" + diskfilename + "\"");
+                response.setContentLength(data.length);
+                response.setHeader("Content-Range", "" + Integer.valueOf(data.length - 1));
+                response.setHeader("Accept-Ranges", "bytes");
+                OutputStream os = response.getOutputStream();
+                os.write(data);
+                //先声明的流后关掉！
+                os.flush();
+                os.close();
+                inputStream.close();
+            } catch (Exception e) {
+                e.printStackTrace();
+                return failed("未知异常！",e.getMessage());
+            }
+            return success("成功！");
+    }
+
     @ApiOperation("上传图片通用方法,返回成功后的url")
     @PostMapping("/uploadPic")
     public String getPicture(MultipartRequest request) throws Exception {