JSP page
<Body>
<S: fielderror> </s: fielderror>
<S: form action = "uploadUploadAction" enctype = "multipart/form-data"
Theme = "simple">
UserName: <s: textfield name = "userName"/>
<Br/>
Password: <s: textfield name = "userPwd"/>
<Br/>
<Input type = "file" name = "file"/>
<Br/>
<S: submit value = "submit"> </s: submit>
</S: form>
<Br/>
Download <a href = "DownLoadAction"> .gif </a>
</Body>
UploadAction
Package com. hyl. action;
Import java. io. File;
Import java. io. FileInputStream;
Import java. io. FileOutputStream;
Import java. io. IOException;
Import java. io. InputStream;
Import java. io. OutputStream;
Import org. apache. struts2.ServletActionContext;
Import com. hyl. util. DateUtil;
Import com. opensymphony. xwork2.ActionSupport;
Public class UploadAction extends ActionSupport {
Private File file;
Private String fileFileName;
Private String fileContentType;
Private String userName;
Private String userPwd;
Public String upload () throws IOException {
String path = ServletActionContext. getRequest (). getRealPath ("/upload ");
// System. out. println (path );
InputStream is = new FileInputStream (file );
String date = DateUtil. mailDate (new java. util. Date ());
// Intercept the file extension
String fileExtenName = fileFileName
. Substring (fileFileName. indexOf ('.'));
// System. out. println ("intercepted file extension" + fileName );
File serverFile = new File (path, date + fileExtenName );
OutputStream OS = new FileOutputStream (serverFile );
Byte [] B = new byte [1024];
Int length = 0;
While (length = is. read (B)> 0 ){
OS. write (B );
}
OS. close ();
Is. close ();
Return SUCCESS;
}
Public File getFile (){
Return file;
}
Public void setFile (File file ){
This. file = file;
}
Public String getFileFileName (){
Return fileFileName;
}
Public void setFileFileName (String fileFileName ){
This. fileFileName = fileFileName;
}
Public String getFileContentType (){
Return fileContentType;
}
Public void setFileContentType (String fileContentType ){
This. fileContentType = fileContentType;
}
Public String getUserName (){
Return userName;
}
Public void setUserName (String userName ){
This. userName = userName;
}
Public String getUserPwd (){
Return userPwd;
}
Public void setUserPwd (String userPwd ){
This. userPwd = userPwd;
}
}
DownLoadAction
Package com. hyl. action;
Import java. io. InputStream;
Import java. io. UnsupportedEncodingException;
Import org. apache. struts2.ServletActionContext;
Import com. opensymphony. xwork2.ActionSupport;
Public class DownLoadAction extends ActionSupport {
// The following example uses a Chinese file name
// Here, the file name is input by the user. This is also the process of dynamically passing parameters.
Private String picName = "..gif ";
Public InputStream getDownLoad () throws UnsupportedEncodingException {
// Make an intermediate variable here. After re-encoding, the Chinese name cannot be recognized.
String rourseName = picName;
// Recode the Chinese name of the source file. The target value can be identified in the Struts configuration file and displayed to the user.
PicName = new String (picName. getBytes (), "iso-8859-1 ");
System. out. println ("/upload/" + rourseName );
Return ServletActionContext. getServletContext (). getResourceAsStream (
"/Upload/" + rourseName );
}
Public String execute () throws Exception {
Return super.exe cute ();
}
Public String getPicName (){
Return picName;
}
Public void setPicName (String picName ){
This. picName = picName;
}
}
DateUtil
Package com. hyl. util;
Import java. text. SimpleDateFormat;
Import java. util. Calendar;
Import java. util. Date;
Import java. util. GregorianCalendar;
Public class DateUtil {
Public static String dateTimeChange (Date source ){
SimpleDateFormat format = new SimpleDateFormat ("yyyy-MM-dd HH: mm: ss ");
String changeTime = format. format (source );
Return changeTime;
}
Public static String updated Date (Date aDate ){
SimpleDateFormat formatter = new SimpleDateFormat ("MM/dd/yyyy ");
Return formatter. format (aDate );
}
Public static String nowDate (){
String iDate = "";
SimpleDateFormat formatter = new SimpleDateFormat ("yyyy-MM-dd ");
String str = formatter. format (new Date ());
String [] date = str. split ("-");
If (date. length> = 3 ){
IDate = date [0] + "/" + date [1] + "/" + date [2] + "";
} Else {
IDate = str;
}
Return iDate;
}
Public static String mailDate (Date aDate ){
SimpleDateFormat formatter = new SimpleDateFormat ("yyyyMMddHHmmssSSS ");
Return formatter. format (aDate );
}
Public static String dateParser (Date aDate ){
SimpleDateFormat formatter = new SimpleDateFormat ("yyyy-MM-dd ");
Return formatter. format (aDate );
}
Public static Date parser (String strDate ){
;
StrDate = strDate. replace ("/","-");
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd ");
Try {
Return sdf. parse (strDate );
} Catch (Exception e ){
Return null;
}
}
Public static Date parser (String strDate, String formatter ){
SimpleDateFormat sdf = new SimpleDateFormat (formatter );
Try {
Return sdf. parse (strDate );
} Catch (Exception e ){
Return null;
}
}
Public static String parser (Date date, String formatter ){
SimpleDateFormat sdf = new SimpleDateFormat (formatter );
Try {
Return sdf. format (date );
} Catch (Exception e ){
Return null;
}
}
Public static Date addMonth (Date myDate, int amount ){
GregorianCalendar cal = new GregorianCalendar ();
Cal. setTime (myDate );
Boolean isEndDayOfMonth_old = cal
. GetActualMaximum (GregorianCalendar. DAY_OF_MONTH) = cal
. Get (GregorianCalendar. DAY_OF_MONTH );
Cal. add (GregorianCalendar. MONTH, amount );
Boolean isEndDayOfMonth_new = cal
. GetActualMaximum (GregorianCalendar. DAY_OF_MONTH) = cal
. Get (GregorianCalendar. DAY_OF_MONTH );
If (isEndDayOfMonth_old &&! IsEndDayOfMonth_new ){
Cal. set (GregorianCalendar. DATE, cal
. GetActualMaximum (GregorianCalendar. DAY_OF_MONTH ));
}
Return cal. getTime ();
}
Public static Date addDay (Date myDate, int amount ){
Calendar cal = Calendar. getInstance ();
Cal. setTime (myDate );
Cal. add (Calendar. DAY_OF_MONTH, amount );
Return cal. getTime ();
}
Public static Date addMinute (Date myDate, int amount ){
Calendar cal = Calendar. getInstance ();
Cal. setTime (myDate );
Int minute = 0;
Amount =-(amount );
If (amount> 60 ){
Int hour = (int) amount/60;
If (hour * 60> amount ){
Minute = hour * 60-amount;
Cal. add (Calendar. HOUR_OF_DAY,-hour );
Cal. add (Calendar. MINUTE, minute );
} Else if (hour * 60 <amount ){
Minute = amount-hour * 60;
Cal. add (Calendar. HOUR_OF_DAY,-hour );
Cal. add (Calendar. MINUTE,-minute );
} Else {
Cal. add (Calendar. HOUR_OF_DAY,-hour );
}
} Else {
Cal. add (Calendar. MINUTE,-amount );
}
Return cal. getTime ();
}
Public static Date addYear (Date myDate, int amount ){
GregorianCalendar cal = new GregorianCalendar ();
Cal. setTime (myDate );
Boolean isEndDayOfMonth_old = cal
. GetActualMaximum (GregorianCalendar. DAY_OF_MONTH) = cal
. Get (GregorianCalendar. DAY_OF_MONTH );
Cal. add (GregorianCalendar. YEAR, amount );
Boolean isEndDayOfMonth_new = cal
. GetActualMaximum (GregorianCalendar. DAY_OF_MONTH) = cal
. Get (GregorianCalendar. DAY_OF_MONTH );
If (isEndDayOfMonth_old &&! IsEndDayOfMonth_new ){
Cal. set (GregorianCalendar. DATE, cal
. GetActualMaximum (GregorianCalendar. DAY_OF_MONTH ));
}
Return cal. getTime ();
}
Public static int getWeekDay (Date myDate ){
GregorianCalendar cal = new GregorianCalendar ();
Cal. setTime (myDate );
Return cal. get (GregorianCalendar. DAY_OF_WEEK );
}
Public static int getConvertWeekDay (Date myDate ){
Int day = getWeekDay (myDate );
Int result = day-1;
If (result = 0)
Result = 7;
Return result;
}
Public static int getTimeFromDate (Date myDate ){
SimpleDateFormat sdf = new SimpleDateFormat ("hhmmss ");
Int result = Integer. parseInt (sdf. format (myDate ));
Return result;
}
Public static long getDaysBetweenDate (Date startDate, Date endDate ){
Calendar cal = Calendar. getInstance ();
Cal. setTime (startDate );
Cal. set (Calendar. HOUR, 0 );
Cal. set (Calendar. MINUTE, 0 );
Cal. set (Calendar. SECOND, 0 );
Cal. set (Calendar. MILLISECOND, 0 );
StartDate = cal. getTime ();
Cal. setTime (endDate );
Cal. set (Calendar. HOUR, 0 );
Cal. set (Calendar. MINUTE, 0 );
Cal. set (Calendar. SECOND, 0 );
Cal. set (Calendar. MILLISECOND, 0 );
Return (cal. getTime (). getTime ()-startDate. getTime ()/86400000;
}
Public static String strDateTime (String str ){
String idate = "";
If (str! = Null ){
String [] date = str. split ("-");
If (date. length> = 3 ){
Idate = date [0] + "." + date [1] + "." + date [2];
} Else {
Idate = str;
}
}
Return idate;
}
Public static String strDotDateTime (String str ){
String idate = "";
If (str! = Null ){
String data0 = null;
String [] date = str. split ("-");
If (date. length> = 3 ){
If (date [0]! = Null ){
Data0 = date [0]. substring (2, 4 );
}
Idate = data0 + "." + date [1] + "." + date [2];
} Else {
Idate = str;
}
}
Return idate;
}
Public static String bakDateTime (String str ){
String idate = "";
If (str! = Null ){
Int l1 = str. indexOf (".");
String d1 = str. substring (0, l1 );
String s1 = str. substring (l1 + 1 );
Int l2 = s1.indexOf (".");
String d2 = s1.substring (0, l2 );
String d3 = s1.substring (l2 + 1 );
Idate = d1 + "-" + d2 + "-" + d3;
}
Return idate;
}
Public static String strShortDateTime (String str ){
String idate = "";
If (str! = Null ){
String [] date = str. split ("-");
If (date. length> = 3 ){
Idate = date [0] + "." + date [1] + "." + date [2];
} Else {
Idate = str;
}
If (idate! = Null & idate. length ()> 9 ){
Idate = idate. substring (0, 10 );
}
}
Return idate;
}
Public static int getBetweenDayNumber (String dateA, String dateB ){
Long dayNumber = 0;
Long DAY = 24L * 60L * 60L * 1000L;
SimpleDateFormat df = new SimpleDateFormat ("yyyy-MM-dd ");
Try {
Java. util. Date d1 = df. parse (dateA );
Java. util. Date d2 = df. parse (dateB );
DayNumber = (d2.getTime ()-d1.getTime ()/DAY;
} Catch (Exception e ){
E. printStackTrace ();
}
Return (int) dayNumber;
}
Public static void main (String [] args ){
System. out. println (nowDate ());
}
}
MessageFile. properties
Struts. messages. error. file. too. large = \ u6587 \ u4EF6 \ u8FC7 \ u5927
Struts. messages. error. content. type. not. allowed = \ u6587 \ u4EF6 \ u7C7B \ u578B \ u4E0D \ u4E00 \ u81F4
Struts. xml
<? Xml version = "1.0" encoding = "UTF-8"?>
<! DOCTYPE struts PUBLIC "-// Apache Software Foundation // DTD Struts Configuration 2.1 // EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<Struts>
<! -- Specify the file name of messageFile. properties in the value of the message resource file that loads Struts. Do not write the extension name -->
<Constant name = "struts. custom. i18n. resources" value = "messageFile"> </constant>
<Package name = "hyl" extends = "struts-default">
<! -- Upload Action -->
<Action name = "* UploadAction" class = "com. hyl. action. UploadAction"
Method = "{1}">
<Result name = "success">/OK. jsp </result>
<Result name = "input">/index. jsp </result>
<Interceptor-ref name = "fileUpload">
<Param name = "allowedTypes"> image/jpeg </param>
<Param name = "maximumSize"> 102400 </param>
</Interceptor-ref>
<! -- The default interceptor must be placed under the custom interceptor; otherwise, the custom interceptor cannot be called. -->
<Interceptor-ref name = "defaultStack"> </interceptor-ref>
</Action>
<! -- Downloaded Action -->
<Action name = "DownLoadAction" class = "com. hyl. action. DownLoadAction">
<Result name = "success" type = "stream">
<! -- The specified return type is displayed here. For example, the type that can be recognized by the browser is directly displayed,
If it is another type, it will appear as a download,
If this label is removed, the default text/plain
-->
<Param name = "contentType"> image/jpeg </param>
<! -- The method here is the getDownLoad method in Action, -->
<Param name = "inputName"> downLoad </param>
<Param name = "contentDisposition"> filename = "$ {picName}" </param>
<Param name = "bufferSize"> 1024 </param>
</Result>
</Action>
</Package>
</Struts>
Author: hyljava
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
