springboot实现图片上传和删除

package com.hnucm.medicinestage.service; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.hnucm.medicinestage.dao.FileMapper; import com.hnucm.medicinestage.pojo.fileInformation; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.util.ResourceUtils; import org.springframework.web.multipart.MultipartFile; import java.io.File; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; @Service public class FileServiceImpl implements FileService{ private static final Logger LOGGER= LoggerFactory.getLogger(FileService.class); @Autowired FileMapper fileMapper; @Override public String uploadFile( MultipartFile image, String title) throws Exception { // String os = System.getProperty("os.name");//判断系统 File imagePath; //封面图片存放地址 //File fileRealPath ; //文件存放地址 //String path = System.getProperty("user.dir"); //获取项目相对路径 //fileRealPath = new File(path+"/src//main/resources/file"); //imagePath = new File(path+"/src//main/resources/static/images"); imagePath=new File("E:\\medicineOfCH\\stageImage"); /* if (os.toLowerCase().startsWith("win")) { //windows系统 String path = System.getProperty("user.dir"); //获取项目相对路径 fileRealPath = new File(path+"/src//main/resources/file"); imagePath = new File(path+"/src//main/resources/static/images"); }else{//linux系统 //获取根目录 //如果是在本地windows环境下，目录为项目的target\classes下 //如果是linux环境下，目录为jar包同级目录 File rootPath = new File(ResourceUtils.getURL("classpath:").getPath()); if(!rootPath.exists()){ rootPath = new File(""); } fileRealPath = new File(rootPath.getAbsolutePath()+"/file/"); imagePath = new File(rootPath.getAbsolutePath()+"/images"); }*/ //判断文件夹是否存在 /* if(!fileRealPath.exists()){ //不存在，创建 fileRealPath.mkdirs(); }*/ if(!imagePath.exists()){ //不存在，创建 imagePath.mkdirs(); } //获取文件名称 //String fileName = file.getOriginalFilename(); String imageName = image.getOriginalFilename(); //创建文件存放地址 /* File resultPath = new File(fileRealPath+"/"+fileName); if (resultPath.exists()){ LOGGER.warn("文件已经存在！"); return "false！"; }*/ //创建图片存放地址 File imageResultPath = new File(imagePath+"/"+imageName); if(imageResultPath.exists()){ LOGGER.warn("图片已经存在"); return "false！"; } SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); //file.transferTo(resultPath); image.transferTo(imageResultPath); fileMapper.insert(title, sdf.format(new Date()), imageName); // System.out.println("absolutePath:"+fileRealPath.getCanonicalPath()); // System.out.println("resultPath:"+resultPath.getCanonicalPath()); System.out.println("imageResultPath:"+imageResultPath.getCanonicalPath()); return "true！"; } @Override public List<fileInformation> getAllFile() { return fileMapper.findAllFile(); } @Override public int deleteById(Integer id) { return fileMapper.deleteById(id); } }