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文件上传或者点击确定后
文件接收到请求和请求一块过来的参数
1 public class UplocadAo extends BaseAo implements ModelDriven<QuestionVo>{ 2 3 QuestionVo questionVo = new QuestionVo(); 4 public void uploadFile(){ 5 UploadFileBo ufb = new UploadFileBo(); 6 String resultstr = "{status:1,imgName:"; 7 try{ 8 // UploadFileBo bo = (UploadFileBo)SpringFactory.getInstance().getBean("uploadFileBo"); 9 resultstr = ufb.doUploadFile(request, response,questionVo.getDomainCode(),questionVo.getQuestionBankId(),questionVo.getOperatorUserAccount()); 10 String xmlUrl = Configer.getInstance().getProperty("save_xlsUrl"); 11 Logger.getLogger().debug("返回给前台的路径************************************************"+resultstr); 12 //resultstr = "{\"status\":1,\"xmlUrl\":\""+resultstr+"\"}"; 13 System.out.println(resultstr); 14 }catch(Exception ex){ 15 resultstr = "{\"status\":0,\"xmlUrl\":}"; 16 ex.printStackTrace(); 17 } 18 19 this.outString(resultstr, "text/html; charset=utf-8"); 20 21 }
上一篇中 返回的参数类型的json 所以这个Ao也要输出一个json格式的数据 resultstr resultstr = "{\"status\":0,\"xmlUrl\":}"; \这个是反转意的意思 让字符串编程json
1 public String doUploadFile(HttpServletRequest request,HttpServletResponse response,String domainCode,Long questionBankId,String operatorUserAccount ) { 2 String resutlstr = ""; 3 QuestionBo qb = new QuestionBo(); 4 try { 5 request.setCharacterEncoding("utf-8"); 6 } catch (UnsupportedEncodingException e1) { 7 // TODO Auto-generated catch block 8 e1.printStackTrace(); 9 } 10 11 12 //System.out.println(request.getContentLength()); 文件的大小 13 //判断提交过来的表单是否为文件上传菜单 14 boolean isMultipart= ServletFileUpload.isMultipartContent(request); 15 if(isMultipart){ 16 //构造一个文件上传处理对象 17 FileItemFactory factory = new DiskFileItemFactory(); 18 ServletFileUpload upload = new ServletFileUpload(factory); 19 20 Iterator items; 21 try{ 22 //解析表单中提交的所有文件内容 23 items = upload.parseRequest(request).iterator(); 24 while(items.hasNext()){ 25 FileItem item = (FileItem) items.next(); 26 if(!item.isFormField()){ 27 //取出上传文件的文件名称 28 String name = item.getName(); //photo:image/jpeg excle: 29 Logger.getLogger().debug("文件的名称*********************************"+name); 30 long fileSize = item.getSize(); 31 //去除上传文件的类型 32 String type = item.getContentType(); 33 //取得上传文件以后的存储路径 34 String fileName = name.substring(name.lastIndexOf(‘\\‘) + 1, name.length()); 35 Logger.getLogger().debug("filename"+fileName); 36 fileName = fileName.substring(fileName.lastIndexOf("."), fileName.length()); 37 fileName = Tools.getUUID()+fileName; 38 //上传文件以后的存储路径 39 Logger.getLogger().debug("*****image/pjpeg image/x-png*******************************########"+type); 40 String saveDir = ""; 41 if("image/jpeg".equals(type) ||"image/pjpeg".equals(type)||"image/x-png".equals(type)|| 42 "image/png".equals(type) || "image/bmp".equals(type) ){ 43 saveDir = Configer.getInstance().getProperty("save_imgUrl"); 44 }else if("application/vnd.ms-excel".equals(type)){ 45 saveDir = Configer.getInstance().getProperty("save_xlsUrl"); 46 }else if( fileSize > ( 1024*400)) { 47 resutlstr= "largesize"; 48 }else{ 49 resutlstr= "patternerror"; 50 } 51 52 53 if(StringUtils.isNotBlank(saveDir)) { 54 //这个创建文件夹会出错 55 if (!(new File(saveDir).isDirectory())){ 56 new File(saveDir).mkdir(); 57 Logger.getLogger().debug("目录不存在创建目录"); 58 } 59 String path= saveDir + File.separatorChar + fileName; 60 Logger.getLogger().debug("文件上传到的路径"+path); 61 //上传文件 62 File uploaderFile = new File(path); 63 item.write(uploaderFile); 64 resutlstr = fileName; 65 } 66 67 } 68 } 69 }catch(Exception e){ 70 e.printStackTrace(); 71 response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); 72 } 73 // response.setStatus(HttpServletResponse.SC_OK); 74 // response.getWriter().append("Success Upload"); 75 } 76 return qb.doImport(resutlstr, questionBankId, domainCode, operatorUserAccount); 77 }
这个是放在服务层的bo（就是方法的实现）把客户端的 文件上传到服务器端 这里要着重说一下iE和火狐读到的图片格式 是不一样的 （如何要限制文件或者图片格式的话）
代码不会再服务器端创建文件夹或者路径 那一块代码 有问题 这个方法中的resutlstr只是加密后的文件的名字 在qb.doImport() 方法的实现中有用到
private QuestionVo questionVo = new QuestionVo(); static IQuestionService questionService; static IQuestionBankService questionBankService; static { try { questionService = (IQuestionService) ServiceFactory.getService( IQuestionService.class, "questionService"); questionBankService = (IQuestionBankService)ServiceFactory.getService( IQuestionBankService.class,"questionBankService"); } catch (MalformedURLException e) { e.printStackTrace(); } } public String doImport(String fileName, Long questionBankId,String domainCode,String operatorUserAccount) { CodeMessage cm = new CodeMessage(); byte[] bytes =null; Logger.getLogger().debug(fileName); String downLoadUrl = Configer.getInstance().getProperty("save_xlsUrl"); if(StringUtils.isBlank(fileName)) { cm.setCode(400); cm.setMessage("文件为空，不能导入"); } else { String filepath = downLoadUrl+fileName; File file = new File(filepath); Logger.getLogger().debug("*********************************************************cun******"+file.exists()); if(null == file) { cm.setCode(400); cm.setMessage("无导入文件，请检查后再操作"); } else { try { bytes = FileConvertor.getByte(file); } catch (Exception e) { e.printStackTrace(); } /* Long questionBankId = questionVo.getQuestionBankId(); String domainCode = questionVo.getDomainCode(); String operatorUserAccount = questionVo.getOperatorUserAccount(); */ cm = questionService.doImport(bytes, questionBankId, domainCode, operatorUserAccount); } } String jsonResult = JSONConvertor.bean2Json(cm); return jsonResult; } }
这个也是在服务层的文件的一些属性的做的处理
public static byte[] getByte(File file) throws Exception { byte[] bytes = null; try { InputStream is = new FileInputStream(file); ByteArrayOutputStream bos = new ByteArrayOutputStream(); byte[] b = new byte[1024]; int n; while ((n = is.read(b)) != -1) { bos.write(b, 0, n); } is.close(); bos.close(); bytes = bos.toByteArray(); }catch(FileNotFoundException e){ e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return bytes; }
把流文件转化为bytes文件
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原文地址：http://www.cnblogs.com/w1136060202/p/4546204.html
