南京信息工程大学-嵌入式大作业-上机实验与报告内含源码和说明书.zip

package com.fht.common.util; import java.io.*; import java.net.URL; import java.util.Map;import io.netty.util.internal.StringUtil; import org.apache.tomcat.util.codec.binary.Base64; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import freemarker.template.Configuration; import freemarker.template.Template; import org.springframework.util.ResourceUtils;import javax.servlet.http.HttpServletResponse;import static freemarker.template.Configuration.VERSION_2_3_24;public class FileUtil { public static Logger logger = LoggerFactory.getLogger(FileUtil.class); /** * 生成word文件(全局可用) * @param dataMap word中需要展示的动态数据，用map集合来保存 * @param templateName word模板名称，例如：test.ftl * @param fileFullPath 要生成的文件全路径 */ @SuppressWarnings("unchecked") public static void create(Map dataMap, String templateName, String fileFullPath) { logger.info("【createWord】：==>方法进入"); logger.info("【fileFullPath】：==>" + fileFullPath); logger.info("【templateName】：==>" + templateName); try { // 创建配置实例 Configuration configuration = new Configuration(VERSION_2_3_24); logger.info("【创建配置实例】：==>"); // 设置编码 configuration.setDefaultEncoding("UTF-8"); logger.info("【设置编码】：==>"); // 设置处理空值 configuration.setClassicCompatible(true); // 设置错误控制器 configuration.setClassForTemplateLoading(FileUtil.class,"/ftl"); //创建文件 File file = new File(fileFullPath); // 如果输出目标文件夹不存在，则创建 if (!file.getParentFile().exists()) { file.getParentFile().mkdirs(); } // 将模板和数据模型合并生成文件 Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), "UTF-8")); // 获取模板 Template template = configuration.getTemplate(templateName); // 生成文件 template.process(dataMap, out); // 清空缓存 out.flush(); // 关闭流 out.close(); } catch (Exception e) { logger.info("【生成word文件出错】：==>" + e.getMessage()); e.printStackTrace(); } } /** * 下载生成的文件(全局可用) * @param fullPath 全路径 * @param response */ public static void downLoadFile(String fullPath, HttpServletResponse response) { logger.info("【downLoadFile:fullPath】：==>" + fullPath); InputStream inputStream = null; OutputStream outputStream = null; try { //创建文件 File file = new File(fullPath); String fileName = file.getName(); //读文件流 inputStream = new BufferedInputStream(new FileInputStream(file)); byte[] buffer = new byte[inputStream.available()]; inputStream.read(buffer); //清空响应 response.reset(); response.setCharacterEncoding("UTF-8"); // response.setContentType("application/octet-stream; charset=utf-8"); // response.setContentType("application/vnd.ms-excel"); // response.setContentType("application/msword"); response.setHeader("Content-Disposition","attachment; filename=" + new String(fileName.getBytes(), "ISO8859-1")); response.setHeader("Content-Length", "" + file.length()); //写文件流 outputStream = new BufferedOutputStream(response.getOutputStream()); outputStream.write(buffer); outputStream.flush(); } catch (Exception e) { e.printStackTrace(); } finally { try { if (outputStream != null) { outputStream.close(); } } catch (Exception e) { e.printStackTrace(); } try { if (inputStream != null) { inputStream.close(); } } catch (Exception e) { e.printStackTrace(); } } } /** * 下载生成的文件(全局可用) * @param response */ public static void downLoadFile(String filename,InputStream inputStream, HttpServletResponse response) { OutputStream outputStream = null; try { //读文件流 int filesize = inputStream.available(); byte[] buffer = new byte[filesize]; inputStream = new BufferedInputStream(inputStream); inputStream.read(buffer); //清空响应 response.reset(); response.setCharacterEncoding("UTF-8"); // response.setContentType("application/octet-stream; charset=utf-8"); // response.setContentType("application/vnd.ms-excel"); // response.setContentType("application/msword"); response.setHeader("Content-Disposition","attachment; filename=" + new String(filename.getBytes(), "ISO8859-1")); response.setHeader("Content-Length", "" + String.valueOf(filesize)); //写文件流 outputStream = new BufferedOutputStream(response.getOutputStream()); outputStream.write(buffer); outputStream.flush(); } catch (Exception e) { e.printStackTrace(); } finally { try { if (outputStream != null) { outputStream.close(); } } catch (Exception e) { e.printStackTrace(); } try { if (inputStream != null) { inputStream.close(); } } catch (Exception e) { e.printStackTrace(); } } } /** * 下载网络文件到本地(主要用于下载简历附件) * @param urlAddress 网络url地址,为空时直接返回 * @param fileFullPath 文件全路径 */ public static void createFromUrl(String urlAddress,String fileFullPath) { logger.info("【service:开始下载网络文件】:==> 网上文件地址：" + urlAddress + "文件保存路径:" + fileFullPath); if(StringUtil.isNullOrEmpty(urlAddress)) { return ; } DataInputStream dataInputStream = null; FileOutputStream fileOutputStream =null; try { URL url = new URL(urlAddress); dataInputStream = new DataInputStream(url.openStream());//打开网络输入流 //创建文件 File file = new File(fileFullPath); // 如果输出目标文件夹不存在，则创建 if (!file.getParentFile().exists()) { file.getParentFile().mkdirs(); } fileOutputStream = new FileOutputStream(file);//建立一个新的文件 byte[] buffer = new byte[1024]; int length; while((length = dataInputStream.read(buffer))>0){//开始填充数据 fileOutputStream.write(buffer,0,length); } fileOutputStream.flush(); } catch (Exception e) { e.printStackTrace(); } finally { try { if(dataInputStream!=null) { dataInputStream.close(); } } catch (IOException e) { e.printStackTrace(); } try { if(fileOutputStream!=null) { fileOutputStream.close();