前端页面
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>上传!</title>
</head>
<body>
<form method="POST" enctype="multipart/form-data" action="/upload">
<p>
文件：<input type="file" name="file1" />
</p>
<p>
<input type="submit" value="上传" />
</p>
</form>
<form method="POST" enctype="multipart/form-data" action="/uploadBatch">
<p>
文件1：<input type="file" name="file" />
</p>
<p>
文件2：<input type="file" name="file" />
</p>
<p>
<input type="submit" value="上传" />
</p>
</form>
</body>
</html>
上传配置UploadConfig.java
package com.zns.config;
import javax.servlet.MultipartConfigElement;
import org.springframework.boot.web.servlet.MultipartConfigFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class UploadConfig {
@Bean
public MultipartConfigElement multipartConfigElement() {
MultipartConfigFactory factory = new MultipartConfigFactory();
// 设置文件大小限制 ,超了，页面会抛出异常信息，这时候就需要进行异常信息的处理了;
factory.setMaxFileSize("1024KB"); // KB,MB
// 设置总上传数据总大小
factory.setMaxRequestSize("1024KB");
// Sets the directory location where files will be stored.
// factory.setLocation("路径地址");
return factory.createMultipartConfig();
}
}
UploadController.java
package com.zns.controller;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
@Controller
public class UploadController {
// 单文件上传
@RequestMapping(value = "/upload", method = RequestMethod.POST)
@ResponseBody
public String upload(@RequestParam("file1") MultipartFile file) {
if (!file.isEmpty()) {
try {
// 此处是上传到了根目录
BufferedOutputStream out = new BufferedOutputStream(
new FileOutputStream(new File(file.getOriginalFilename())));
out.write(file.getBytes());
out.flush();
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
return "上传失败," + e.getMessage();
} catch (IOException e) {
e.printStackTrace();
return "上传失败," + e.getMessage();
}
return "上传成功";
} else {
return "上传失败，因为文件是空的.";
}
}
// 多文件上传
@RequestMapping(value = "/uploadBatch", method = RequestMethod.POST)
@ResponseBody
public String uploadBatch(HttpServletRequest request) {
List<MultipartFile> files = ((MultipartHttpServletRequest) request).getFiles("file");
MultipartFile file = null;
BufferedOutputStream stream = null;
for (int i = 0; i < files.size(); ++i) {
file = files.get(i);
if (!file.isEmpty()) {
try {
byte[] bytes = file.getBytes();
stream = new BufferedOutputStream(new FileOutputStream(new File(file.getOriginalFilename())));
stream.write(bytes);
stream.close();
} catch (Exception e) {
stream = null;
return "第" + i + "个文件上传失败：" + e.getMessage();
}
} else {
return "上传失败,第" + i + "个文件为空！";
}
}
return "上传成功";
}
}
原文地址：https://www.cnblogs.com/zengnansheng/p/10389798.html
时间： 2024-08-30 09:52:55