first commit

src/main/java/lingtao/net/service/MyFileService.java

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+package lingtao.net.service;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.List;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.web.multipart.MultipartFile;
+
+import lingtao.net.bean.Msg;
+import lingtao.net.bean.MyFile;
+import lingtao.net.bean.MyFileExample;
+import lingtao.net.bean.MyFileExample.Criteria;
+import lingtao.net.dao.MyFileMapper;
+
+@Service
+public class MyFileService {
+
+	@Autowired
+	MyFileMapper fileMapper;
+
+	// 文件上传
+	public Msg fileUpload(MultipartFile file, HttpServletRequest request) {
+		try {
+			// 获取存放路径
+			String path = request.getSession().getServletContext().getRealPath("/deptFile");
+			// 判断路径是否存在
+			File upfile = new File(path);
+			if (!upfile.exists()) {
+				upfile.mkdirs();
+			}
+			// 获得文件名
+			String filename = file.getOriginalFilename();
+			upfile = new File(path + "/" + filename);
+			MyFile myFile = new MyFile();
+			// 将文件移动到指定路径中
+			file.transferTo(upfile);
+			myFile.setFileName(filename);
+			myFile.setFilePath(path);
+			myFile.setCreateBy("admin");
+			fileMapper.insertSelective(myFile);
+			return Msg.success();
+		} catch (IOException e) {
+			return Msg.fail();
+		}
+	}
+
+	// 获取所有的文件信息
+	public List<MyFile> getFileList(MyFile myFile, HttpSession session) {
+		return fileMapper.getFileList(myFile);
+	}
+
+	// 根据ID删除文件
+	public Msg deleteFile(Integer fileId) {
+		try {
+			fileMapper.deleteByPrimaryKey(fileId);
+			return Msg.success();
+		} catch (Exception e) {
+			return Msg.fail("删除失败");
+		}
+	}
+
+	// 批量删除文件
+	public Msg deleteBatch(List<Integer> del_ids) {
+		MyFileExample example = new MyFileExample();
+		Criteria criteria = example.createCriteria();
+		criteria.andFileIdIn(del_ids);
+		try {
+			fileMapper.deleteByExample(example);
+			return Msg.success();
+		} catch (Exception e) {
+			return Msg.fail();
+		}
+	}
+
+	// 同时删除服务器中的文件
+	public boolean deleteFile(String delFileName) {
+		boolean flag = false;
+		File file = new File(delFileName);
+		// 判断目录或文件是否存在
+		if (!file.exists()) { // 不存在返回 false
+			return flag;
+		} else {
+			flag = true;
+			file.delete();
+		}
+		return flag;
+	}
+}