1 #region 配合前端的多张图片上传
2 #region 上传图片方法
3 /// <summary>
4 /// 接口方法
5 /// </summary>
6 /// <param name="img">带 data:image/jpeg;base64,的base64的图片</param>
7 /// <returns>图片路径</returns>
8 [HttpPost]
9 public ActionResult GETaddimg2(String img)
10 {
11 if (img == null)
12 {
13 return Json("空");
14 }
15 else
16 {
17 return Json(PDUploadImage(img), JsonRequestBehavior.AllowGet);
18 }
19 }
20 #endregion
21 #region 图片转化
22 /// <summary>
23 /// base64 的字符串
24 /// </summary>
25 /// <param name="img"></param>
26 /// <returns>图片转成32的名字</returns>
27 public JsonResult PDUploadImage(string img)
28 {
29 string error = "";
30 return Json(SaveImage("/Upload/Article", img, ref error), JsonRequestBehavior.AllowGet);
31 }
32 #endregion
33 #region 截取data:image/jpeg;base64,提取图片，并保存图片
34 /// <summary>
35 /// 截取data:image/jpeg;base64,提取图片，并保存图片
36 /// </summary>
37 /// <param name="file_name"></param>
38 /// <param name="img_string">base64的字符串</param>
39 /// <param name="error">错误的图片格式</param>
40 /// <returns>路径 + 图片的名称</returns>
41 private string SaveImage(string file_name, string img_string, ref string error)
42 {
43 //try
44 //{
45 string[] img_array = img_string.Split(',');
46 byte[] arr = Convert.FromBase64String(img_array[1]);
47 using (MemoryStream ms = new MemoryStream(arr))
48 {
49 Bitmap bmp = new Bitmap(ms);
50 if (img_array[0].ToLower() == "data:image/jpeg;base64")
51 {
52 bmp.Save(file_name + ".jpg");
53 return SetImg(Guid.NewGuid().ToString().Replace('-', 'p').Substring(4), "jpg", arr);
54 }
55 else if (img_array[0].ToLower() == "data:image/png;base64")
56 {
57 bmp.Save(file_name + ".png");
58 return SetImg(Guid.NewGuid().ToString().Replace('-', 'p').Substring(4), "png", arr);
59 }
60 else if (img_array[0].ToLower() == "data:image/gif;base64")
61 {
62 bmp.Save(file_name + ".gif");
63 return SetImg(Guid.NewGuid().ToString().Replace('-', 'p').Substring(4), "gif", arr);
64 }
65 else
66 {
67 error = "不支持该文件格式。";
68 return "错";
69 }
70 }
71 //}
72 //catch (Exception ex)
73 //{
74 // error = "生成图片发生错误。" + ex.ToString();
75 // return "错";
76 //}
77 }
78 #endregion
79 #region 保存图片路径及设置名称
80 /// <summary>
81 /// 保存到文件路径
82 /// </summary>
83 /// <param name="ImgName">保存的文件名称</param>
84 /// <param name="suffix">后缀名</param>
85 /// <param name="arr">base64</param>
86 /// <returns>图片的路径</returns>
87 public string SetImg(string ImgName, string suffix, byte[] arr)
88 {
89 string str3 = System.AppDomain.CurrentDomain.BaseDirectory;//找到相对路径
90 string str4 = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase;//找到相对路径
91 System.IO.File.WriteAllBytes(str3 + "/Upload/Article/" + ImgName + "." + suffix + "", arr);
92 return "/Upload/Article/" + ImgName + "." + suffix + "";
93 }
94 #endregion
95 #endregion
