Java 文件上传 三种方式
一:配置springBoot上传文件限制
spring:
servlet:
multipart:
max-file-size: 100MB #单个文件大小
max-request-size: 1024MB #总文件大小
二:代码
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.support.StandardMultipartHttpServletRequest;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Base64;
import java.util.Locale;
import java.util.UUID;
@RestController
@RequestMapping("upload")
public class UploadController {
/**
* 上传方式一,从请求体中获取文件信息
* @param request
* @return
* @throws IOException
*/
@PostMapping("method1")
public String upload1(HttpServletRequest request) throws IOException {
MultipartFile file = ((StandardMultipartHttpServletRequest) request).getFile("file");
String fileName = file.getOriginalFilename();
String newName=UUID.randomUUID().toString() fileName.substring(fileName.indexOf("."));
// 获取当前操作系统
String osName = System.getProperties().get("os.name").toString().toLowerCase(Locale.ROOT);
String path="";
if(osName.startsWith("win")){
path="D:\\Test\\";
}else{
path="/mnt/test";
}
File saveFile=new File(path newName);
if(!saveFile.getParentFile().exists()){
saveFile.getParentFile().mkdirs();
}
// 设置文件权限时需先创建文件
// saveFile.createNewFile();
file.transferTo(saveFile);
// 文件权限
// fileAuth(saveFile.toPath());
return saveFile.getPath();
}
/**
* 上传方式2 MultipartFile 上传
* @param file
* @return
* @throws IOException
*/
@PostMapping("method2")
public String upload2(@RequestParam("file") MultipartFile file) throws IOException {
String fileName = file.getOriginalFilename();
String newName=UUID.randomUUID().toString() fileName.substring(fileName.indexOf("."));
// 获取当前操作系统
String osName = System.getProperties().get("os.name").toString().toLowerCase(Locale.ROOT);
String path="";
if(osName.startsWith("win")){
path="D:\\Test\\";
}else{
path="/mnt/test";
}
File saveFile=new File(path newName);
if(!saveFile.getParentFile().exists()){
saveFile.getParentFile().mkdirs();
}
file.transferTo(saveFile);
return saveFile.getPath();
}
/**
* base64 图片上传
* @param base64
* @return
*/
@PostMapping("method3")
public String upload3(@RequestParam("base64")String base64){
String base64Data = base64.split(",")[1];
Base64.Decoder decoder = Base64.getDecoder();
byte[] bytes = decoder.decode(base64Data);
// 获取当前操作系统
String osName = System.getProperties().get("os.name").toString().toLowerCase(Locale.ROOT);
String path="";
if(osName.startsWith("win")){
path="D:\\Test\\";
}else{
path="/mnt/test";
}
String newName=UUID.randomUUID().toString() ".png";
File saveFile=new File(path newName);
if(!saveFile.getParentFile().exists()){
saveFile.getParentFile().mkdirs();
}
FileOutputStream fos = null;
try {
fos = new FileOutputStream(saveFile);
fos.write(bytes);
} catch (IOException e) {
e.printStackTrace();
} finally {
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return saveFile.getPath();
}
/**
* 文件上传到linux权限处理
* @throws Exception
*/
private static void fileAuth(Path path) throws Exception {
Set perms = Files.readAttributes(path, PosixFileAttributes.class).permissions();
// 当前用户权限
/*perms.add(PosixFilePermission.OWNER_WRITE);
perms.add(PosixFilePermission.OWNER_READ);
perms.add(PosixFilePermission.OWNER_EXECUTE);
// 组权限
perms.add(PosixFilePermission.GROUP_WRITE);
perms.add(PosixFilePermission.GROUP_READ);
perms.add(PosixFilePermission.GROUP_EXECUTE);*/
// 其它权限
perms.add(PosixFilePermission.OTHERS_WRITE);
perms.add(PosixFilePermission.OTHERS_READ);
perms.add(PosixFilePermission.OTHERS_EXECUTE);
Files.setPosixFilePermissions(path, perms);
}
public static void main(String[] args) {
String data = "data:image/png;base64,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 ZAAAAABJRU5ErkJggg==";
}
}
这篇好文章是转载于:学新通技术网
- 版权申明: 本站部分内容来自互联网,仅供学习及演示用,请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系,请提供相关证据及您的身份证明,我们将在收到邮件后48小时内删除。
- 本站站名: 学新通技术网
- 本文地址: /boutique/detail/tanhgakbkg
系列文章
更多
同类精品
更多
-
photoshop保存的图片太大微信发不了怎么办
PHP中文网 06-15 -
Android 11 保存文件到外部存储,并分享文件
Luke 10-12 -
word里面弄一个表格后上面的标题会跑到下面怎么办
PHP中文网 06-20 -
《学习通》视频自动暂停处理方法
HelloWorld317 07-05 -
photoshop扩展功能面板显示灰色怎么办
PHP中文网 06-14 -
微信公众号没有声音提示怎么办
PHP中文网 03-31 -
excel下划线不显示怎么办
PHP中文网 06-23 -
怎样阻止微信小程序自动打开
PHP中文网 06-13 -
excel打印预览压线压字怎么办
PHP中文网 06-22 -
TikTok加速器哪个好免费的TK加速器推荐
TK小达人 10-01