I want to reduse size of BLOB and display in jsp
Please help me ,and if is possible than send me code for resize and display BLOB image injsp page
Resizing: check the Java2D API. Tutorial.
Displaying: create a servlet which writes the InputStream from the ResultSet to the OutputStream of the HttpServletResponse. Then call that servlet along an unique parameter in the <img> tag. Example.
Resizing is a fairly expensive task, have you considered resizing it before saving in database? Then you need to do it only once.
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Hi All,
I am new to xml. I am storing my xml file into BLOB in database. Now in my jsp page I want to retrieve this xml file from BLOB and display in HTML/CSS/XSLT form...
Pl. guide me.. any docs..?? Logic...??
Thanks in Advance.
Sandeep OzaHello Sandeep!
I'm not familiar with jsp but logic should be as follows:
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-load specified BLOB into parser
Now you may traverse the XML tree or you might load XSL file and use transform method to transform XML according to XSL file.
I have an example where I'm selecting XML straight from relational database and then transform it using XSL into appropriate HTML output, but it's written in PSP.
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hi,
i am trying to retrieve data from SQL server 2000 and display in JSP Page. I have already place the codes of the retrieve in the bean file. I wanna ask is that how to display in the JSP page. If possible, can provide example codings for mi to reference?
Thanks
Regards,
shixuanHI Tan ,
I pressume that you wanted to make use of PDK, the code can go like this .
<b><u>1) JAVA file</u></b>
import com.sapportals.htmlb.DropdownListBox;
import com.sapportals.htmlb.InputField;
import com.sapportals.htmlb.event.Event;
import com.sapportals.htmlb.page.DynPage;
import com.sapportals.htmlb.page.PageException;
import com.sapportals.portal.htmlb.page.JSPDynPage;
import com.sapportals.portal.htmlb.page.PageProcessorComponent;
import com.sapportals.portal.prt.component.IPortalComponentRequest;
import com.sapportals.portal.prt.component.IPortalComponentSession;
import com.sapportals.portal.prt.component.IPortalComponentContext;
import java.sql.*;
public class P_SAP_B_User extends PageProcessorComponent
* Method : getPage()
* Description :
* Input Parameters : None
* Returns : Object of Class DynPage
public DynPage getPage()
return new P_SAP_B_UserDynPage();
} // end of dynPage()
public static class P_SAP_B_UserDynPage extends JSPDynPage
/* Variable Declaration */
/* Object of bean class P_SAP_B_CreateUser initialised to null */
private P_SAP_B_CreateUser createUserBean = null;
/* Flags for checking the occurance of Event & Error. */
private int iFlag=0;
private int iErrFlag=0;
/* Variables for storing the information
entered by user in each text field */
private String sFname;
private String sSname;
private String sAge;
private String sExp;
private String sSkill;
private String sUnit;
* Method : doInitialization()
* Description :
* Input Parameters : None
* Returns : None
public void doInitialization()
IPortalComponentSession componentSession = ((IPortalComponentRequest)getRequest()).getComponentSession();
Object o = componentSession.getValue("createUserBean");
if(o==null || !(o instanceof P_SAP_B_CreateUser))
createUserBean = new P_SAP_B_CreateUser();
componentSession.putValue("createUserBean",createUserBean);
} // end of if
else
createUserBean = (P_SAP_B_CreateUser) o;
} // end of else
}//end of doInitialisation()
* Method : onUpdate()
* Description :
* Input Parameters : object of Event class
* Returns : None
public void onUpdate(Event e)throws PageException
/* sets flag to 1 when update button is clicked. */
iFlag=1;
* Method : doProcessAfterInput()
* Description :
* Input Parameters : None
* Returns : None
public void doProcessAfterInput() throws PageException
InputField ifFirstName = (InputField) getComponentByName("FirstName");
InputField ifSecondName = (InputField) getComponentByName("SecondName");
InputField ifAge = (InputField) getComponentByName("Age");
InputField ifExp = (InputField) getComponentByName("Exp");
InputField ifSkill = (InputField) getComponentByName("Skill");
DropdownListBox dlbUnit = (DropdownListBox) getComponentByName("Unit");
int iAge,iExp;
IPortalComponentRequest request = (IPortalComponentRequest) this.getRequest();
IPortalComponentContext myContext = request.getComponentContext();
P_SAP_B_CreateUser myNameContainer = (P_SAP_B_CreateUser) myContext.getValue("createUserBean");
if(ifFirstName != null)
this.sFname = ifFirstName.getValueAsDataType().toString() ;
} // end of if
if(ifSecondName!= null)
this.sSname = ifSecondName.getValueAsDataType().toString() ;
} // end of if
if(ifAge!= null)
this.sAge = ifAge.getValueAsDataType().toString() ;
} // end of if
if(ifExp!= null)
this.sExp = ifExp.getValueAsDataType().toString() ;
} // end of if
if(ifSkill != null)
this.sSkill = ifSkill.getValueAsDataType().toString() ;
} // end of if
if(dlbUnit != null)
this.sUnit = dlbUnit.getSelection().toString() ; ;
} // end of if
/* Data Validation */
/* try block for numeric Exception */
try
/* checking for any field left blank by the user */
if(sFname.equals("") || sSname.equals("") || sAge.equals("")|| sExp.equals("") || sSkill.equals(""))
/* set error flag to 1 in case of any field left blank */
iErrFlag=1;
} // end of if
else
/* converting Age and Experience fields (String) to integer */
iAge= Integer.parseInt(sAge);
iExp= Integer.parseInt(sExp);
/* setting the boundaries on the value in Age Field */
if(iAge<0)
/* set error flag to 2 in case of age below 0 */
iErrFlag=2;
}// end of if
/* setting the boundaries on the value in Experience field */
else if(iExp<0 ||(iExp/12)>=iAge)
/* set error flag to 3 in case of experience below 0 or exceeding the age in years */
iErrFlag=3;
}// end of else if
/* In case of no error */
else
/* setting the bean variables */
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection("jdbc:odbc:Test");
String query="insert into UserData values(?,?,?,?,?,?)";
PreparedStatement prestat=con.prepareStatement(query);
/* setting the values to be inserted into the user table */
prestat.setString(1,sFname);
prestat.setString(2,sSname);
prestat.setString(3,sAge);
prestat.setString(4,sExp);
prestat.setString(5,sSkill );
prestat.setString(6,sUnit);
prestat.executeUpdate() ;
prestat.close();
con.close();
myNameContainer.setSFname(sFname);
myNameContainer.setSLname(sSname);
myNameContainer.setSAge(sAge);
myNameContainer.setSExp(sExp);
myNameContainer.setSSkill(sSkill);
myNameContainer.setSUnit(sUnit);
} // end of inner try block
catch(Exception sqle)
myNameContainer.setErrMessage("Update failed ! Please try again." );
} // end of catch corresponding to inner try
} // end of inner else
} //end of outer else
} //end of outer try block
catch(Exception e)
/* setting flag to 4 in case of non-numeric age/experience values */
iErrFlag = 4;
/* Displaying error message corresponding to the value of error flag */
switch(iErrFlag)
/* Empty Field */
case 1:myNameContainer.setErrMessage( "Please Fill all the fields");
break;
/* Invalid Value in the age field */
case 2:myNameContainer.setErrMessage( "Enter a valid value in Age field.(Hint : Have you entered Age<0 ?");
break;
/* Invalid Value in the experience field */
case 3:myNameContainer.setErrMessage( "Enter a valid value in Experience field.(Hint : Experince should not be negative or greater than your age in months)");
break;
/* Non-numeric value in the Age/ experience fields */
case 4:myNameContainer.setErrMessage( "Please Enter Numeric Value for Age and Experience");
break;
} // end of switch-case block
} //end of doProcessAfterInput()
* Method : doProcessBeforeOutput()
* Description :
* Input Parameters : None
* Returns : None
public void doProcessBeforeOutput() throws PageException
/* Displays Form for new user creation by default */
this.setJspName("P_SAP_B_UserCreationForm.jsp");
/* In case of an error display an error message page */
if(iErrFlag!=0)
setJspName("ErrorPage.jsp");
} //end of if
/* Displays the user's information as entered in the SQL
database after its been uploaded by the user */
else if(iFlag==1)
setJspName("hello.jsp");
} // end of else if
} // end of doProcessBeforeOutput()
} // end of P_SAP_B_UserDynPage Class
} // end of P_SAP_B_User class
* End of File P_SAP_B_User.java
2) Bean
package com.sap.usercreation;
import java.io.Serializable;
public class P_SAP_B_CreateUser implements Serializable
private String sFname;
private String sLname;
private String sUnit;
private String sSkill;
private String sExp;
private String sAge;
private String errMessage;
* @return
public String getSFname() {
return sFname;
* @return
public String getSLname() {
return sLname;
* @param i
* @param string
public void setSFname(String string) {
sFname = string;
* @param string
public void setSLname(String string) {
sLname = string;
* @return
public String getSUnit() {
return sUnit;
* @param string
public void setSUnit(String string) {
sUnit = string;
* @return
public String getSSkill() {
return sSkill;
public void setSSkill(String string) {
sSkill = string;
* @return
public String getSAge() {
return sAge;
* @return
public String getSExp() {
return sExp;
* @param string
public void setSAge(String string) {
sAge = string;
* @param string
public void setSExp(String string) {
sExp = string;
* @return
public String getErrMessage() {
return errMessage;
* @param string
public void setErrMessage(String string) {
errMessage = string;
3) The Jsp file i have already posted.
See if you copy this code and paste it wont work as i have not given you full code ,But yes this gives you an overview of how things can be done .
Thanx
Pankaj -
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This should have been trivial, but isn't. Well, it isn't that difficult either. Here's the trick:
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How to pass arraylist of object from action class to jsp and display in jsp
I need to do the following using struts
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( need jsp code)
Can I do like this:
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Assuming the java object has two properties, can I do the following
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example:
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When I get the data from the database and create user object and then stored it in a vector and put it in session.
In the JSP,
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*%C3%A0%C2%A4%C2%95%C3%A0%C2%A5%C2%88%C3%A0%C2%A4%C2%B8%C3%A0%C2%A5%C2%87+%C3%A0%C2%A4%C2%B9%C3%A0%C2%A5%C2%8B*
and
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à¤à¥à¤¸à¥ हà¥
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observe the below code..
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StringTokenizer unicodeArray = new StringTokenizer(call, "\\\\u");
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String output = "";
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char i = ' ';
i = (char) Integer.parseInt(unicode.trim(), 16);
output = String.valueOf(i);
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} catch (Exception e) {
System.out.println("Exception In Unicode to Chinese::\n" + e);
return output;
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But the value is not displaying in the textbox while the jsp is loading.
There is a record for the sql query.
Anybody please help me out
It is very urgent
Thank You
ParvathyNow in the following code, why are u creating a new form?
Why dont you use the form which is input to the Action Class's execute methof?
if(rs.next()){
EditForm e=new EditForm();
e.setEmpname(rs.getString(1));
}Thanks and regards,
Pazhanikanthan. P
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