1.前言
把项目部署到服务器上之后，文件上传默认会在/tmp路径中。
之前想了各种解决办法，比如如何更改这个上传路径。。。。。。
最后发现不是个好的方法，当然就想到了更好的解决方案。
就是我把上传文件存储到临时路径里，我在通过File类的文件移动方法移动到我想要的路径下，就解决了这个问题。
2.解决方案
package com.xm.zeronews.controller;
import com.xm.zeronews.pojo.User;
import com.xm.zeronews.service.UserService;
import com.xm.zeronews.util.UserUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.system.ApplicationHome;
import org.springframework.util.ClassUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.file.StandardOpenOption;
import java.util.UUID;
/**
* 作者：Xm Guo
* 时间：2018/11/15
**/
@Api(value="FileController",tags="文件上传管理")
@RestController
@CrossOrigin
@RequestMapping("/upload")
public class FileController {
@Autowired
private UserService userService;
private Long MaxSize;
@Value("${fileUpload.path}")
private String path;
@Value("${fileUpload.file}")
private String filepaths;
@ApiOperation(value="上传头像")
@PostMapping("/head")
public String uploadHead(MultipartFile file) {
String filename = file.getOriginalFilename();
return upload(file,false,"head"+filename.substring(filename.lastIndexOf('.')));
}
@ApiOperation(value="上传背景")
@PostMapping("/bg")
public String uploadBg(MultipartFile file) {
String filename = file.getOriginalFilename();
filename = upload(file,false,"bg"+filename.substring(filename.lastIndexOf('.')));
User user = new User();
user.setId(UserUtil.getUserId());
user.setBg(filename);
userService.updateById(user);
return filename;
}
@ApiOperation(value="上传新闻图片")
@PostMapping("/news")
public String uploadNews(MultipartFile file) {
String filename= null;
try{
filename= file.getOriginalFilename();
} catch(Exception e) {
e.printStackTrace();
}
filename = UUID.randomUUID().toString().replace("-", "").toLowerCase() + filename.substring(filename.lastIndexOf('.'));
return upload(file,true,filename);
}
private String upload(MultipartFile file,Boolean isNews,String fileName) {
File tmpfile = new File("/"+fileName);
try {
file.transferTo(tmpfile);
} catch (IOException e) {
e.printStackTrace();
}
String filepath = filepaths;
filepath += UserUtil.getUserId();
File upFile = new File(path+filepath);
if(!upFile.exists()) {
upFile.mkdir();
}
if(isNews) {
filepath += "/news";
upFile = new File(path+filepath);
if(!upFile.exists()) {
upFile.mkdir();
}
}
filepath += "/"+ fileName;
upFile = new File(path,filepath);
System.out.println("文件上传路径："+upFile.getAbsolutePath());
if(tmpfile.renameTo(upFile)){
System.out.println("文件上传成功！");
return filepath;
} else {
System.out.println("文件上传失败！");
}
return null;
/*FileChannel inChannel =null;
FileChannel outChannel = null;
try {
inChannel =FileChannel.open(tmpfile.toPath(), StandardOpenOption.READ);
*//**
* StandardOpenOption.CREATE与StandardOpenOption.CREATE_NEW的区别
* 1.StandardOpenOption.CREATE：无则创建，有则覆盖
* 2.StandardOpenOption.CREATE_NEW：无则创建，有则报错
*//*
outChannel =FileChannel.open(upFile.toPath(), StandardOpenOption.WRITE,StandardOpenOption.CREATE);
//3.定义缓冲区
ByteBuffer buffer = ByteBuffer.allocate(1024);
//4.读取数据到缓冲区,再从缓冲区写入到文件
while(inChannel.read(buffer) != -1) {
//切换到读模式
buffer.flip();
//写操作到管道
outChannel.write(buffer);
//清空buffer
buffer.clear();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
//5.关闭通道和流
if(inChannel != null) {
try {
inChannel.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(outChannel != null) {
try {
outChannel.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return filepath;
}*/
}
}