ADD file via upload

SystemResourceController.java

@@ -0,0 +1,67 @@
+package com.qsd.orange.controller;
+
+import cn.hutool.core.io.IoUtil;
+import cn.hutool.core.io.file.FileWriter;
+import cn.hutool.system.SystemUtil;
+import com.qsd.orange.global.R;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.*;
+
+@RestController
+@RequestMapping("system/resource/image")
+public class SystemResourceController {
+
+    public static final String IMAGE_PATH = SystemUtil.get("user.dir");
+
+    @PostMapping
+    public R updateImage(MultipartFile file){
+        String temp = file.getName();
+        System.out.println(temp);
+        temp = "png";
+        String name = System.currentTimeMillis() + "." + temp;
+        BufferedOutputStream outputStream = null;
+        try(InputStream inputStream = file.getInputStream();) {
+            File f = new File(IMAGE_PATH, name);
+            if (!f.exists()){
+                f.createNewFile();
+            }
+            FileWriter fileWriter = new FileWriter(f);
+            outputStream = fileWriter.getOutputStream();
+            IoUtil.copy(inputStream, outputStream);
+        } catch (IOException e) {
+            e.printStackTrace();
+            return R.error();
+        }finally {
+            try {
+                outputStream.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+        return R.success().data("image", name);
+    }
+
+    @GetMapping("{name}")
+    public void show(@PathVariable("name") String name, HttpServletResponse response) {
+        FileInputStream inputStream = null;
+        try {
+            inputStream = new FileInputStream(new File(IMAGE_PATH, name));
+            response.setContentType("image/png");
+            IoUtil.copy(inputStream, response.getOutputStream());
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                inputStream.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+}