文件下载相关代码提交;

linkwe-admin/src/main/java/com/linkwechat/web/controller/common/CommonController.java

@@ -15,6 +15,7 @@ import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -33,9 +34,6 @@ public class CommonController {
     @Autowired
     private ServerConfig serverConfig;
 
-    @Autowired
-    private CosConfig cosConfig;
-
 
     @Autowired
     private FileService fileService;
@@ -122,12 +120,8 @@ public class CommonController {
     @PostMapping("/common/uploadFile2Cos")
     public AjaxResult uploadFile2Cos(MultipartFile file) throws Exception {
         try {
-
             SysFile sysFile
                     = fileService.upload(file);
-
-//            String fileName = FileUploadUtils.upload2Cos(file, cosConfig);
-
             AjaxResult ajax = AjaxResult.success();
             ajax.put("fileName", sysFile.getFileName());
             ajax.put("url", sysFile.getImgUrlPrefix()+sysFile.getFileName());
@@ -138,8 +132,15 @@ public class CommonController {
     }
 
 
-//    public  String url(String fileName){
-//        return "https://link-wechat-1251309172.cos.ap-nanjing.myqcloud.com/"+fileName;
-//    }
+    /**
+     * 本地图片下载
+     */
+    @GetMapping("/findFile")
+    public void findFile(HttpServletResponse response,String fileName){
+            fileService.findFile(fileName,response);
+    }
+
+
+
 
 }

linkwe-framework/src/main/java/com/linkwechat/framework/web/service/FileService.java

@@ -9,8 +9,11 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 import org.springframework.web.multipart.MultipartFile;
 
+import javax.servlet.http.HttpServletResponse;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 
 
 /**
@@ -37,7 +40,7 @@ public class FileService {
      * @return
      * @throws IOException
      */
-    public SysFile upload(MultipartFile file) throws IOException {
+     public SysFile upload(MultipartFile file) throws IOException {
         String fileName="";
         if(ruoYiConfig.getFile().isStartCosUpload()){//开启云上传
              //开启云上传开关则云上传，不然上传本地
@@ -56,4 +59,40 @@ public class FileService {
     }
 
 
+
+    public void findFile(String fileName, HttpServletResponse rp){
+        String fileDownUrl="";
+//        if(ruoYiConfig.getFile().isStartCosUpload()) {//开启云上传
+//            fileDownUrl= ruoYiConfig.getFile().getImgUrlPrefix();
+//        }else{
+            fileDownUrl=OsUtils.isWindows()?WINDOWSFILEPATH+fileName:LINUXFILEPATH+fileName;
+//        }
+        File file=new File(fileDownUrl);
+        if (file.exists()) {
+            FileInputStream fis = null;
+            OutputStream os = null;
+            try {
+                fis = new FileInputStream(file);
+                os = rp.getOutputStream();
+                int count = 0;
+                byte[] buffer = new byte[1024 * 8];
+                while ((count = fis.read(buffer)) != -1) {
+                    os.write(buffer, 0, count);
+                    os.flush();
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+            } finally {
+                try {
+                    fis.close();
+                    os.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+
+    }
+
+
 }