文件上传通用类，主要是前后的分类1，文件上传server，代码 2，工具文件工具类

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我是靠谱客的博主无聊小馒头，这篇文章主要介绍文件上传通用类，主要是前后的分类1，文件上传server，代码 2，工具文件工具类，现在分享给大家，希望可以做个参考。

1，文件上传server，代码

import org.apache.commons.io.FileUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.util.Base64Utils;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;

/**
* Created by sean on 2018/5/2.
*/
@Service
public class UploadFileBiz {

//这个路径是配置在application.yml
@Value("${uploadPath}")
private String uploadPath;
@Autowired
private FileEntityBiz fileEntityBiz;

public ResultBean fileUpload(FileVo fileVo) throws Exception {
String filename = "";
String filePath = "";
MultipartFile file = fileVo.getFiles()[0];
try {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String format = sdf.format(new Date());
String[] split = format.split("-");
String dateDir = "";
for (String str : split) {
dateDir += str + "/";
}
String path = uploadPath + dateDir;
File dir = new File(path);

//上传的位置，如果不存在创建一个文件夹
if (!dir.exists()) {
dir.mkdirs();
}
//上传文件名
String oldName = file.getOriginalFilename();
if (oldName.contains("[") || oldName.contains("]")) {
oldName = oldName.replaceAll("]", "");
oldName = oldName.replaceAll("\[", "");
}
//获取新的名字只按照当前时间毫秒获取。。可加UUID
File serverFile = new File(path + oldName);
if (serverFile.exists()) {
int count = 1;
boolean flag = true;
while (flag) {
filename = oldName.replaceAll(oldName.substring(oldName.lastIndexOf(".")), "") + "(" + count + ")" + oldName.substring(oldName.lastIndexOf("."));
serverFile = new File(path + oldName.replaceAll(oldName.substring(oldName.lastIndexOf(".")), "") + "(" + count + ")" + oldName.substring(oldName.lastIndexOf(".")));
if (!serverFile.exists()) {
System.out.println("不存在");
flag = false;
}
count++;
}
} else {
filename = oldName;
}
//在保存图片位置创建文件
//把内存图片写入磁盘中
file.transferTo(serverFile);
filePath = dateDir + filename;
} catch (IOException e) {
return new ResultBean(e);
}
//持久化到数据库，记录数相对路径
FileEntity fileEntity = new FileEntity();
fileEntity.setEntityId(fileVo.getEntityId());
fileEntity.setFileName(filename);
fileEntity.setEntityType(fileVo.getEntityType());
fileEntity.setFilePath(filePath);
fileEntity.setFileSize(file.getSize());
fileEntity.setFileContentType(file.getContentType());
fileEntityBiz.insert(fileEntity);
return ResultBean.ok();
}

public void downloadFile(HttpServletResponse res, String fileName) throws UnsupportedEncodingException {
File file = new File(uploadPath + fileName);
if (!file.exists()) {
return;
}
res.reset(); // 非常重要
res.setHeader("Access-Control-Allow-Origin", res.getHeader("Origin"));
res.setHeader("Access-Control-Allow-Methods", "GET,POST,PUT,DELETE,OPTIONS");
res.setHeader("Access-Control-Max-Age", "3600");
res.setHeader("Access-Control-Allow-Headers", "content-type,Device,Authorization,Origin,Platform,Cookie,remember-me");
res.setHeader("Access-Control-Allow-Credentials", "true");
res.setHeader("content-type", "application/octet-stream");
res.setHeader("Access-Control-Expose-Headers", "Content-Disposition");
res.setContentType("application/octet-stream");
res.setHeader("content-disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
byte[] buff = new byte[1024];
BufferedInputStream bis = null;
OutputStream os = null;
try {
os = res.getOutputStream();
bis = new BufferedInputStream(new FileInputStream(new File(uploadPath
+ fileName)));
int i = bis.read(buff);
while (i != -1) {
os.write(buff, 0, buff.length);
os.flush();
i = bis.read(buff);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (bis != null) {
try {
bis.close();
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}

public ResultBean fileUploadForBase64(String base64Data, HttpServletRequest request) {
String filename = "";
try {
String dataPrix = "";
String data = "";
if (base64Data == null || "".equals(base64Data)) {
return new ResultBean(new Exception("上传失败，上传图片数据为空"));
} else {
String[] d = base64Data.split("base64,");
if (d != null && d.length == 2) {
dataPrix = d[0];
data = d[1];
} else {
return new ResultBean(new Exception("上传失败，数据不合法"));
}
}
String suffix = "";
if ("data:image/jpeg;".equalsIgnoreCase(dataPrix)) {
//data:image/jpeg;base64,base64编码的jpeg图片数据
suffix = ".jpg";
} else if ("data:image/x-icon;".equalsIgnoreCase(dataPrix)) {
//data:image/x-icon;base64,base64编码的icon图片数据
suffix = ".ico";
} else if ("data:image/gif;".equalsIgnoreCase(dataPrix)) {
//data:image/gif;base64,base64编码的gif图片数据
suffix = ".gif";
} else if ("data:image/png;".equalsIgnoreCase(dataPrix)) {
//data:image/png;base64,base64编码的png图片数据
suffix = ".png";
} else {
return new ResultBean(new Exception("上传图片格式不合法"));
}
String tempFileName = System.currentTimeMillis() + suffix;

//因为BASE64Decoder的jar问题，此处使用spring框架提供的工具包
byte[] bs = Base64Utils.decodeFromString(data);
try {
//使用apache提供的工具类操作流

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String format = sdf.format(new Date());
String dateDir = "";
String[] split = format.split("-");
for (String str : split) {
dateDir += str + "/";
}
String path = uploadPath + dateDir;
File dir = new File(path);
//上传的位置，如果不存在创建一个文件夹
if (!dir.exists()) {
dir.mkdirs();
}
FileUtils.writeByteArrayToFile(new File(path + tempFileName), bs);
filename = dateDir + tempFileName;
} catch (Exception ee) {
return new ResultBean(new Exception("上传失败，写入文件失败，" + ee.getMessage()));
}
} catch (Exception e) {
return new ResultBean(e);
}
return new ResultBean(filename);
}

public ResultBean deleteFile(Integer id) {
FileEntity fileEntity = fileEntityBiz.selectById(id);
if (fileEntity != null) {
File file = new File(uploadPath + fileEntity.getFilePath());
if (file.exists()) {
file.delete();
int falg= fileEntityBiz.deleteByIdFlag(id);
if(falg>0){
return ResultBean.build("删除成功");
}
}
}
return ResultBean.build("文件不存在");
}

public int deleteFile(FileEntity fileEntity) {
File file = new File(uploadPath + fileEntity.getFilePath());
if (file.exists()) {
file.delete();
int flag = fileEntityBiz.deleteByIdFlag(fileEntity.getId());
if (flag > 0) {
return flag;
}
}
return -1;
}

//提交多个文件
public ResultBean fileUploads(FileVo fileVo) throws Exception {
String filename = "";
String filePath = "";
List<Map<String, String>> list;
try {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String format = sdf.format(new Date());
String[] split = format.split("-");
String dateDir = "";
for (String str : split) {
dateDir += str + "/";
}
System.out.println();
String path = uploadPath + dateDir;
File dir = new File(path);

//上传的位置，如果不存在创建一个文件夹
if (!dir.exists()) {
dir.mkdirs();
}
//上传文件名
list = new ArrayList<>();
for (MultipartFile file : fileVo.getFiles()) {
String oldName = file.getOriginalFilename();
if (oldName.contains("[") || oldName.contains("]")) {
oldName = oldName.replaceAll("\[", "");
oldName = oldName.replaceAll("]", "");
}
//获取新的名字只按照当前时间毫秒获取。。可加UUID
File serverFile = new File(path + oldName);
if (serverFile.exists()) {
int count = 1;
boolean flag = true;
while (flag) {
filename = oldName.replaceAll(oldName.substring(oldName.lastIndexOf(".")), "") + "(" + count + ")" + oldName.substring(oldName.lastIndexOf("."));
serverFile = new File(path + oldName.replaceAll(oldName.substring(oldName.lastIndexOf(".")), "") + "(" + count + ")" + oldName.substring(oldName.lastIndexOf(".")));
if (!serverFile.exists()) {
flag = false;
}
count++;
}
} else {
filename = oldName;
}
//在保存图片位置创建文件
//把内存图片写入磁盘中
file.transferTo(serverFile);
filePath = dateDir + filename;
FileEntity fileEntity = new FileEntity();
fileEntity.setEntityId(fileVo.getEntityId());
fileEntity.setFileName(filename);
fileEntity.setEntityType(fileVo.getEntityType());
fileEntity.setFilePath(filePath);
fileEntity.setFileSize(file.getSize());
fileEntityBiz.insert(fileEntity);
}
} catch (IOException e) {
return ResultBean.build(e.getMessage());
}

return ResultBean.ok(list);
}

}

2，工具文件工具类

复制代码

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public class FileVo {
    private MultipartFile[] files;
    private Integer entityId;
    private String entityType;

    public MultipartFile[] getFiles() {
        return files;
    }

    public void setFiles(MultipartFile[] files) {
        this.files = files;
    }

    public Integer getEntityId() {
        return entityId;
    }

    public void setEntityId(Integer entityId) {
        this.entityId = entityId;
    }

    public String getEntityType() {
        return entityType;
    }

    public void setEntityType(String entityType) {
        this.entityType = entityType;
    }
}