项目结构：
1、单文件上传
upload.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>upload file</title>
</head>
<body>
<form action="/uploadfile/upload" method="post" enctype="multipart/form-data">
<input type="file" name="file">
<input type="submit" value="上传">
</form>
</body>
</html>
http://localhost:8080/uploadfile/upload
package com.archibladwitwicke.springboot2.chapter03.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import java.io.File;
@Controller
@RequestMapping("/uploadfile")
public class UploadFileController {
@RequestMapping("/upload")
public String upload() {
return "/upload.html";
}
@PostMapping("/upload")
@ResponseBody
public String upload(MultipartFile file) {
if (file.isEmpty()) {
return "file is null";
}
String originFileName = file.getOriginalFilename();
String destFileLocation = "C:\Users\Administrator\Desktop\" + originFileName;
File destFile = new File(destFileLocation);
try {
file.transferTo(destFile);
return "upload ok! upload file location: " + destFileLocation;
} catch (Exception ex) {
return "upload false! reason: " + ex.getMessage();
}
}
@RequestMapping("/uploads")
public String uploads() {
return "/multiupload.html";
}
}
2、多文件上传
multiupload.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>upload file</title>
</head>
<body>
<form action="/uploadfile/uploads" method="post" enctype="multipart/form-data">
<input type="file" name="files"><br/>
<input type="file" name="files"><br/>
<input type="file" name="files"><br/>
<input type="submit" value="上传">
</form>
</body>
</html>
http://localhost:8080/uploadfile/uploads
package com.archibladwitwicke.springboot2.chapter03.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import java.io.File;
@Controller
@RequestMapping("/uploadfile")
public class UploadFileController {
@RequestMapping("/uploads")
public String uploads() {
return "/multiupload.html";
}
@PostMapping("/uploads")
@ResponseBody
public String uploads(MultipartFile[] files) {
String result = null;
if (files.length == 0) {
return "file is null";
}
for (MultipartFile file : files) {
String originFileName = file.getOriginalFilename();
String destFileLocation = "C:\Users\Administrator\Desktop\" + originFileName;
File destFile = new File(destFileLocation);
try {
file.transferTo(destFile);
result += "upload ok! upload file location: " + destFileLocation;
} catch (Exception ex) {
result = "upload false! reason: " + ex.getMessage();
}
}
return result;
}
}
