.Net Core 图片上传FormData和Base64

 1 //上传图片
 2 
 3 afterRead(file) {
 4   // 此时可以自行将文件上传至服务器
 5   let obj={};
 6   var imgurl=file.content
 7    //需要将文件的地址 需要去掉base64头部标签 这里简单用replace替换
 8   imgurl =  imgurl.replace("data:image/jpeg;base64,", "");
 9     //获取图片的格式
10   var Img=file.file.name.split(‘.‘)[1]
11   
12     //创建formdata对象 传递参数
13   var formdata=new FormData();
14   formdata.append("fileBase64",imgurl);//添加一条数据
15   formdata.append("fileExt",Img);//添加一条数据
16  
17   //ajax调用接口，ajax的参数配置
18   this.$ajax({
19     method: ‘post‘,
20     dataType:‘json‘,
21     url: "http://*****/FileUpload/UploadBase64",
22     contentType : false,// 告诉jQuery不要去设置Content-Type请求头
23     processData: false,// 告诉jQuery不要去处理发送的数据,
24     beforeSend : function(req) {
25       req.setRequestHeader(‘Content-Type‘, ‘application/json‘);  ///加这一行解决问题
26     },
27      data: formdata
28   }).then(res=>{
29     //图片上传成功后 执行的操作
30      var msg=res.data.msg
31       
32   }).catch(error =>{
33     console.log(error)
34   })
35 },

 1  [HttpPost]
 2        
 3         public string  UploadBase64(string fileBase64,string fileExt)
 4         {
 5             TableData data = new TableData();
 6             byte[] bytes = ToBytes_FromBase64Str(fileBase64);
 7             //var fileExtension = Path.GetExtension(fileName);
 8           
 9             string webRootPath = _hostingEnvironment.WebRootPath;
10             string newFileName = System.Guid.NewGuid().ToString() + "." + fileExt; //随机生成新的文件名
11             
12             var filePath = webRootPath + "/upload";
13             var RetfilePath =  "upload/" + newFileName;
14             if (!Directory.Exists(filePath))
15             {
16                 Directory.CreateDirectory(filePath);
17             }
18             filePath = webRootPath + "/upload/" + newFileName;
19             try
20             {
21                 data.code = 200;
22                 FileStream fs = new FileStream(filePath, FileMode.CreateNew);
23                 fs.Write(bytes, 0, bytes.Length);
24                 fs.Close();
25                 data.msg = RetfilePath;
26             }
27             catch (Exception ex)
28             {
29                 data.code = 500;
30                 data.msg = "newFileName:"+ newFileName+"Error:"+ex.Message;
31             }
32             return JsonHelper.Instance.Serialize(data);
33         }

 1  public static class FileHelper
 2     {
 3        
 4         /// <summary>
 5         /// 拷贝文件
 6         /// </summary>
 7         /// <param name="orignFile">原始文件</param>
 8         /// <param name="newFile">新文件路径</param>
 9         public static void FileCoppy(string orignFile, string newFile)
10         {
11             if (string.IsNullOrEmpty(orignFile))
12             {
13                 throw new ArgumentException(orignFile);
14             }
15             if (string.IsNullOrEmpty(newFile))
16             {
17                 throw new ArgumentException(newFile);
18             }
19             System.IO.File.Copy(orignFile, newFile, true);
20         }
21         /// <summary>
22         /// 删除文件
23         /// </summary>
24         /// <param name="path">路径</param>
25         public static void FileDel(string path)
26         {
27             if (string.IsNullOrEmpty(path))
28             {
29                 throw new ArgumentException(path);
30             }
31             System.IO.File.Delete(path);
32         }
33         /// <summary>
34         /// 移动文件
35         /// </summary>
36         /// <param name="orignFile">原始路径</param>
37         /// <param name="newFile">新路径</param>
38         public static void FileMove(string orignFile, string newFile)
39         {
40             if (string.IsNullOrEmpty(orignFile))
41             {
42                 throw new ArgumentException(orignFile);
43             }
44             if (string.IsNullOrEmpty(newFile))
45             {
46                 throw new ArgumentException(newFile);
47             }
48             System.IO.File.Move(orignFile, newFile);
49         }
50         //创建路径
51         public static void CreatePath(string FilePath)
52         {
53             if (!Directory.Exists(FilePath))
54             {
55                 Directory.CreateDirectory(FilePath);
56             }
57         }
58         //创建文件
59         public static void CreateFile(string FilePath)
60         {
61             if (!File.Exists(FilePath))
62             {
63                 FileStream fs = File.Create(FilePath);
64                 fs.Close();
65             }
66         }
67     }

 1    public class TableData
 2     {
 3         /// <summary>
 4         /// 状态码
 5         /// </summary>
 6         public int code;
 7         /// <summary>
 8         /// 操作消息
 9         /// </summary>
10         public string msg;
11         /// <summary>
12         /// 总记录条数
13         /// </summary>
14         public int count;
15         
16         /// <summary>
17         /// 数据内容
18         /// </summary>
19         public dynamic data;
20         public TableData()
21         {
22             code = 200;
23             msg = "加载成功";
24             
25         }
26     }