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()

View Code

 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

View Code

 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

View Code

 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

View Code

 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

View Code

 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)