完成图片上传接口

platform-admin/src/main/java/com/platform/entity/BASE64DecodedMultipartFile.java

+package com.platform.entity;
+
+import cn.hutool.core.codec.Base64;
+import org.springframework.web.multipart.MultipartFile;
+import sun.misc.BASE64Decoder;
+
+import java.io.*;
+
+/**
+ * @Auther: wudepeng
+ * @Date: 2020/03/22
+ * @Description:
+ */
+public class BASE64DecodedMultipartFile implements MultipartFile {
+
+    private final byte[] imgContent;
+    private final String header;
+
+    public BASE64DecodedMultipartFile(byte[] imgContent, String header) {
+        this.imgContent = imgContent;
+        this.header = header.split(";")[0];
+    }
+
+    @Override
+    public String getName() {
+        return System.currentTimeMillis() + Math.random() + "." + header.split("/")[1];
+    }
+
+    @Override
+    public String getOriginalFilename() {
+        return System.currentTimeMillis() + (int) Math.random() * 10000 + "." + header.split("/")[1];
+    }
+
+    @Override
+    public String getContentType() {
+        return header.split(":")[1];
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return imgContent == null || imgContent.length == 0;
+    }
+
+    @Override
+    public long getSize() {
+        return imgContent.length;
+    }
+
+    @Override
+    public byte[] getBytes() throws IOException {
+        return imgContent;
+    }
+
+    @Override
+    public InputStream getInputStream() throws IOException {
+        return new ByteArrayInputStream(imgContent);
+    }
+
+    @Override
+    public void transferTo(File dest) throws IOException, IllegalStateException {
+        new FileOutputStream(dest).write(imgContent);
+    }
+
+    public static MultipartFile base64ToMultipart(String base64) {
+        try {
+            String[] baseStrs = base64.split(",");
+
+            BASE64Decoder decoder = new BASE64Decoder();
+            byte[] b = new byte[0];
+            b = decoder.decodeBuffer(baseStrs[1]);
+
+            for (int i = 0; i < b.length; ++i) {
+                if (b[i] < 0) {
+                    b[i] += 256;
+                }
+            }
+            return new BASE64DecodedMultipartFile(b, baseStrs[0]);
+        } catch (IOException e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    public static File base64ToFile(String base64) {
+        if(base64==null||"".equals(base64)) {
+            return null;
+        }
+        byte[] buff= Base64.decode(base64);
+        File file=null;
+        FileOutputStream fout=null;
+        try {
+            file = File.createTempFile("tmp", null);
+            fout=new FileOutputStream(file);
+            fout.write(buff);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }finally {
+            if(fout!=null) {
+                try {
+                    fout.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+        return file;
+    }
+
+
+}