5.0 SpringBoot普通上传功能 > 我的程序猿之路：第四十章

SpringBoot 2.0

1.upLoad.html

 1 <!DOCTYPE html>
 2 <html lang="en" xmlns:th="http://www.thymeleaf.org">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Upload Page</title>
 6 </head>
 7 
 8 <body>
 9 <form action="/index.do/upload" method="post" enctype="multipart/form-data">
10     <table>
11         <tr>
12             <td><input type="file" id="fileNameEmg" name="fileNameEmg"></td><h2 th:text="${emg}"/>
13             <td th:if="${emg=='上传成功!'}"><img th:src="@{'/img/'+${image}}" alt="picture" width="100px" height="100px" /></td>
14         </tr>
15         <tr>
16             <td><input type="button" value="submit" onclick="aa(this)"></td>
17         </tr>
18     </table>
19 
20 </form>
21 <script>
22 
23     function aa(obj){
24         var fiel = document.getElementById("fileNameEmg");
25         var a = fiel.value;
26         if(a.indexOf(".png")!=-1||a.indexOf(".jpg")!=-1){
27 
28             obj.form.submit()
29         }else{
30             alert("请选择图片文件")
31         }
32     }
33     </script>
34 </body>
35 </html>

2.uploadController.java

 1 @Controller
 2 @RequestMapping("index.do")
 3 public class userController {
 4 
 5 @RequestMapping("/uploadEng")
 6 public String up(@RequestParam("fileNameEmg") MultipartFile file,Model model) throws Exception{
 7 
 8        if (file.isEmpty()){
 9            System.out.println("--=========");
10            model.addAttribute("emg","请选择要上传的文件！");
11 
12         }
13         if(!file.isEmpty()){
14            15            
16             System.out.println("--");
17            byte[] bytes = file.getBytes();
18            Path path = Paths.get("C://tool//Project//demo3//src//main//resources//static//img//" + file.getOriginalFilename());
19          Files.write(path, bytes);
20          String str = "上传成功!";
21           model.addAttribute("emg",str);
22           model.addAttribute("image",file.getOriginalFilename());
23           System.out.println(path);
24       }
25        return "uploadPage";
26     }
27 }

3.application.properties

#spring.servlet.multipart.enabled=false 
spring.servlet.multipart.enabled=true

注意：Spring Boot默认实例化了一个MultipartResolver（StandardServletMultipartResolver）；

application.properties中的“spring.servlet.multipart.enabled”默认（不写）为true。设置false在这里会报错。

下一篇SpringBoot断点续传功能必须设置 spring.servlet.multipart.enabled=false ，默认的话报错，有解决upload.parseRequest(request)返回null的大神留言指点下，谢谢

5.0 SpringBoot普通上传功能 > 我的程序猿之路：第四十章

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