巴巴运动网学习笔记(46-50)
实现文件上传模块
1.完成文件上传模块的实体bean和业务bean()
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1 package cnblogs.xiaoqiu.bean.upload; 2 3 import java.io.Serializable; 4 import java.util.Date; 5 6 import javax.persistence.Column; 7 import javax.persistence.Entity; 8 import javax.persistence.GeneratedValue; 9 import javax.persistence.Id; 10 import javax.persistence.Temporal; 11 import javax.persistence.TemporalType; 12 @Entity 13 public class UploadFile implements Serializable{ 14 private static final long serialVersionUID = 3595994055420990951L; 15 private int id; 16 //上传文件的存放路径 17 private String filePath; 18 //文件的上传时间 19 private Date uploadTime = new Date(); 20 @Id @GeneratedValue 21 public int getId() { 22 return id; 23 } 24 public void setId(int id) { 25 this.id = id; 26 } 27 @Column(nullable=false,length=80) 28 public String getFilePath() { 29 return filePath; 30 } 31 public void setFilePath(String filePath) { 32 this.filePath = filePath; 33 } 34 @Temporal(TemporalType.TIMESTAMP) 35 public Date getUploadTime() { 36 return uploadTime; 37 } 38 public void setUploadTime(Date uploadTime) { 39 this.uploadTime = uploadTime; 40 } 41 @Override 42 public int hashCode() { 43 final int prime = 31; 44 int result = 1; 45 result = prime * result + id; 46 return result; 47 } 48 @Override 49 public boolean equals(Object obj) { 50 if (this == obj) 51 return true; 52 if (obj == null) 53 return false; 54 if (getClass() != obj.getClass()) 55 return false; 56 UploadFile other = (UploadFile) obj; 57 if (id != other.id) 58 return false; 59 return true; 60 } 61 }
2.完成文件上传模块的action和jsp和formbean
a.新建UploadManagerAction,实现文件上传功能
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1 package cnblogs.xiaoqiu.web.action.upload; 2 3 import java.io.File; 4 import java.io.FileOutputStream; 5 import java.text.SimpleDateFormat; 6 import java.util.Date; 7 import java.util.UUID; 8 9 import javax.annotation.Resource; 10 import javax.servlet.http.HttpServletRequest; 11 import javax.servlet.http.HttpServletResponse; 12 13 import org.apache.struts.action.ActionForm; 14 import org.apache.struts.action.ActionForward; 15 import org.apache.struts.action.ActionMapping; 16 import org.apache.struts.actions.DispatchAction; 17 import org.springframework.stereotype.Controller; 18 import cnblogs.xiaoqiu.bean.upload.UploadFile; 19 import cnblogs.xiaoqiu.service.upload.UploadService; 20 import cnblogs.xiaoqiu.web.action.formbean.UploadForm; 21 @Controller("/control/upload/manager") 22 public class UploadManagerAction extends DispatchAction{ 23 @Resource(name="uploadServiceImpl") 24 private UploadService uploadService; 25 /** 26 * 提供上传界面 27 * @param mapping 28 * @param form 29 * @param request 30 * @param response 31 * @return 32 * @throws Exception 33 */ 34 public ActionForward uploadUI(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) 35 throws Exception { 36 return mapping.findForward("upload"); 37 } 38 39 /** 40 * 实现上传功能 41 * @param mapping 42 * @param form 43 * @param request 44 * @param response 45 * @return 46 * @throws Exception 47 */ 48 public ActionForward upload(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) 49 throws Exception { 50 UploadForm uploadForm = (UploadForm)form; 51 UploadFile uploadFile = new UploadFile(); 52 String message="文件上传成功"; 53 if(uploadForm.getUploadFile()!=null&&uploadForm.getUploadFile().getFileSize()>0){ 54 if(uploadForm.isFileTypeValidate(uploadForm.getUploadFile())){ 55 StringBuffer fileDir = new StringBuffer("/file/upload/"); 56 SimpleDateFormat dateFormat = new SimpleDateFormat("yy/MM/dd/HH/"); 57 fileDir.append(dateFormat.format(new Date())); 58 String imageRealDir = request.getSession().getServletContext().getRealPath(fileDir.toString()); 59 File dir = new File(imageRealDir); 60 if(!dir.exists()) dir.mkdirs(); 61 StringBuffer imageName = new StringBuffer(UUID.randomUUID().toString()); 62 String fileExt = uploadForm.getUploadFile().getFileName().substring(uploadForm.getUploadFile().getFileName().lastIndexOf('.')); 63 imageName.append(fileExt); 64 FileOutputStream outputStream = new FileOutputStream(new File(imageRealDir,imageName.toString())); 65 outputStream.write(uploadForm.getUploadFile().getFileData()); 66 outputStream.close(); 67 uploadFile.setFilePath(fileDir.append(imageName).toString()); 68 uploadService.save(uploadFile); 69 }else{ 70 message = "文件类型不合法"; 71 } 72 }else { 73 message = "文件上传失败"; 74 } 75 request.setAttribute("message", message); 76 return mapping.findForward("uploadFinish"); 77 } 78 79 }
b.新建upload.jsp,添加对文件类型的客户端验证
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1 <%@ page contentType="text/html;charset=UTF-8" %> 2 <%@ include file="/WEB-INF/page/share/taglib.jsp" %> 3 <html> 4 <head> 5 <title>添加品牌</title> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <link rel="stylesheet" href="/css/vip.css" type="text/css"> 8 <SCRIPT language=JavaScript src="/js/FoshanRen.js"></SCRIPT> 9 <script language="JavaScript"> 10 function checkfm(form){ 11 var fileName = trim(form.uploadFile.value); 12 if(fileName!=""){ 13 var extName = fileName.substring(fileName.lastIndexOf('.')+1,fileName.split('').length); 14 var validateType = ["bmp","png","gif","jpg","txt","pdf","doc","xls","ppt"]; 15 for(var i=0;i<validateType.length;i++){ 16 if(extName==validateType[i]) 17 return true; 18 } 19 alert("文件格式不合法"); 20 return false; 21 }else{ 22 alert("文件不能为空"); 23 return false; 24 } 25 return true; 26 } 27 </script> 28 </head> 29 <body bgcolor="#FFFFFF" text="#000000" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0"> 30 <html:form action="/control/upload/manager" method="post" enctype="multipart/form-data" onsubmit="return checkfm(this)"> 31 <input type="hidden" name="method" value="upload"> 32 <br> 33 <table width="90%" border="0" cellspacing="2" cellpadding="3" align="center"> 34 <tr bgcolor="6f8ac4"><td colspan="2" > <font color="#FFFFFF">文件上传：</font></td> 35 </tr> 36 <tr bgcolor="f5f5f5"> 37 <td width="22%" > <div align="right">文件：</div></td> 38 <td width="78%"> <input type="file" name="uploadFile"/> 39 </td> 40 </tr> 41 <tr bgcolor="f5f5f5"> 42 <td colspan="2"> <div align="center"> 43 <input type="submit" name="SYS_SET" value=" 确 定 " class="frm_btn"> 44 </div></td> 45 </tr> 46 </table> 47 </html:form> 48 <br> 49 </body> 50 </html>
c.formbean
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1 package cnblogs.xiaoqiu.web.action.formbean; 2 3 import org.apache.struts.upload.FormFile; 4 5 public class UploadForm extends BaseForm { 6 private static final long serialVersionUID = 1724297881513682925L; 7 8 private FormFile uploadFile; 9 10 public FormFile getUploadFile() { 11 return uploadFile; 12 } 13 14 public void setUploadFile(FormFile uploadFile) { 15 this.uploadFile = uploadFile; 16 } 17 18 }
3.完善文件类型验证的服务器端代码(txt,pdf,doc,xls,ppt)
4.使用配置文件来管理合法文件类型
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1 private static Properties pro = new Properties(); 2 static{ 3 try { 4 pro.load(BaseForm.class.getClassLoader().getResourceAsStream("validateType.properties")); 5 } catch (IOException e) { 6 e.printStackTrace(); 7 } 8 } 9 /** 10 * 验证文件格式是否合法 11 * @param image 12 * @return 13 */ 14 public boolean isFileTypeValidate(FormFile file){ 15 if(file!=null&&file.getFileSize()>0){ 16 String ext = file.getFileName().substring(file.getFileName().lastIndexOf('.')+1); 17 List<String> allowType = new ArrayList<String>(); 18 for(Object key : pro.keySet()){ 19 String value = (String)pro.get(key); 20 String[] valueArr = value.split(","); 21 for(int i=0;i<valueArr.length;i++){ 22 allowType.add(valueArr[i]); 23 } 24 } 25 return allowType.contains(file.getContentType())&&pro.keySet().contains(ext); 26 } 27 return false; 28 }
5.修改文件上传成功之后的消息页面(文件上传成功之后采用跳转的方式跳转到其他页面)
