weui上传多图片,压缩,base64编码的示例代码

记录一下在做一个报修功能的心路历程，需求功能很简单，一个表单提交，表单包含简单的文字字段以及图片

因为使用的是weui框架，前面的话去找weui的表单和图片上传组件，说实话，weui的组件写的还不错，作为一个不太懂前端的渣渣可以拿来开箱即用

主要是不用调那么多的样式问题，直接上代码：

 
  
   
    
图片上传
    
   
   
    

     
    
    
      uploadbase64Image(@RequestBody Map map) throws ParseException, IOException {
  Map imageMap = new HashMap<>();
  String base64 = map.get("base64").toString();
  MultipartFile file = base64DecodedMultipartFile.base64ToMultipart(base64);
  //获取文件保存路径
  String fileSavePath = globalConfService.getByKey(StaticConfigUtil.FILE_SAVE_PATH).getConfValue();
  String fileServerPath = globalConfService.getByKey(StaticConfigUtil.FILE_SERVER_PATH).getConfValue();
  fileSavePath = fileSavePath + DateUtil.formatDatetime("yyyy-MM-dd");
  fileServerPath = fileServerPath + DateUtil.formatDatetime("yyyy-MM-dd");
  if (!file.isEmpty()) {

   String fileName = file.getOriginalFilename();
   String ext=fileName.substring(fileName.lastIndexOf(".")+1);

   String imgName = "/"+UUID.randomUUID()+ "." +ext;

   InputStream in = null;
   OutputStream out = null;
   try {
    File serverFile = new File(fileSavePath+imgName);
    //判断文件父目录是否存在
    if(!serverFile.getParentFile().exists()){
     serverFile.getParentFile().mkdir();
    }
    if (!serverFile.exists()) {
     serverFile.createNewFile();
    }
    in = file.getInputStream();
    out = new FileOutputStream(serverFile);
    byte[] b = new byte[1024];
    int len = 0;
    while ((len = in.read(b))!=-1) {
     out.write(b, 0, len);
    }
    out.close();
    in.close();
    String serverPath = fileServerPath + imgName;
    return ResultUtil.successJson(serverPath);
   } catch (Exception e) {
    e.printStackTrace();
    return ResultUtil.errorJson(ErrorEnum.E_40001,e.getMessage());
   } finally {
    if (out != null) {
     out.close();
     out = null;
    }
    if (in != null) {
     in.close();
     in = null;
    }
   }
  } else {
   return ResultUtil.errorJson(ErrorEnum.E_90007);
  }
 }

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;
 }
}

总结

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