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Subject: RE: Displaying an image in JSP in struts+tiles project
Date: Tue, 5 Jan 2010 11:07:53 -0500
Message-ID: <2CDB225E3067C043A2FF13D8844F5D180383A5EA@USCTMX1140.merck.com>
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Thread-Topic: Displaying an image in JSP in struts+tiles project
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References: <27020146.post@talk.nabble.com>
From: "Kawczynski, David" <david_kawczynski@merck.com>
To: "Struts Users Mailing List" <user@struts.apache.org>
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Being a fan of the KISS policy... I played around with=20
this but didn't have the time to figure it out, so I=20
made the URL spat out by struts2 points to a servlet=20
instead of struts2. =20

(Note that my web.xml has struts2 configured to listen=20
for *.action rather then slash-star)

Good luck & please let me know what your solution is.

Thanks!
-dave


> -----Original Message-----
> From: Aruna Ponaka [mailto:aruna.hcu@gmail.com]=20
> Sent: Monday, January 04, 2010 5:09 PM
> To: user@struts.apache.org
> Subject: Displaying an image in JSP in struts+tiles project
>=20
>=20
> Hi,
>=20
> Am building an application in struts2 and tiles. My requirement is to
> retrieve an image blob from mysql database and display the=20
> image in a jsp
> using img tag as below..
>=20
> img src=3D"<s:url action=3D"myAction"/>"=20
>=20
> Part of my struts.xml is as below:
>=20
>  <package name=3D"default" extends=3D"struts-default">
>         <result-types>
>             <result-type name=3D"tiles"
> class=3D"org.apache.struts2.views.tiles.TilesResult" />
>             <result-type name=3D"myBytesResult"
> class=3D"com.icensa.action.MyBytesResult" ></result-type><br>
>         </result-types>
>          <action name=3D"myAction" class=3D"com.icensa.action.MyAction">
>                <result name=3D"myImageResult" type=3D"myBytesResult" />=20
>          </action>
> </package>
> My MyBytesResult class is:
>=20
> public class MyBytesResult implements Result {
>=20
> 	private static final long serialVersionUID =3D 1L;
> =09
>=20
> 	public void execute(ActionInvocation invocation) throws=20
> Exception {
> 	=09
> 		MyAction action =3D (MyAction) invocation.getAction();
> 		HttpServletResponse response =3D=20
> ServletActionContext.getResponse();
>=20
>         response.setContentType("image/jpeg");
> 	=09
> //response.setContentLength(action.getMyContentLength());
>=20
> 	=09
> response.getOutputStream().write(action.getMyImageInBytes());
> 		response.getOutputStream().flush();
> 	}
>=20
> }
>=20
> And MyAction class is:
>=20
> public class MyAction extends ActionSupport {
> =09
> 	private static final long serialVersionUID =3D 1L;
> 	Blob image =3D null;
>     Connection con =3D null;
>     Statement stmt =3D null;
>     ResultSet rs =3D null;
>     byte[] imgData =3D null;
>     OutputStream o =3D null;
>     HttpServletResponse response =3D ServletActionContext.getResponse();
> 	public String doDefault() {
> 		System.out.println("doDefault()");
> 		try {
> 		      Class.forName("com.mysql.jdbc.Driver");
> 		      con =3D
> DriverManager.getConnection("jdbc:mysql://localhost:3306/proje
> ct","root","pass");
> 		      stmt =3D con.createStatement();
> 		      rs =3D stmt.executeQuery("select * from=20
> books_tb where
> category=3D'General' order by publish_date desc");
> 		      while (rs.next()) {
> 			        image =3D rs.getBlob(11);
> 			        imgData =3D=20
> image.getBytes(1,(int)image.length());		        =20
> 			 }=20
> 		   }
> 		catch (Exception e) {
> 		          System.out.println(e.getMessage());=09
>         =20
> 		    }=20
> 	    return "myImageResult";
> 	  }
>=20
> 	  public byte[] getMyImageInBytes() {=20
> 		  System.out.println("getMyImageInBytes()");
> 		  try{
> 		 =20
> 		  }
> 		  catch (Exception e) {
> 	          System.out.println(e.getMessage());
> 	        =20
> 	     }=20
> 		  return imgData;
> 	  }
>=20
> 	//  public String getMyContentType() { }
> 	//  public String getMyContentDisposition() {}
> 	//  public int getMyContentLength() { }
> 	//  public int getMyBufferSize() { }
>=20
> 	}
>=20
> when i run the code the image is not displayed and I get an=20
> error saying
> No result defined for action com.action.MyAction and result success
>=20
> In struts.xml is I provide reslut name=3D"success" and the jsp,=20
> it does not
> throw an error but not displaying the image. However in any=20
> case it is not
> going to MyAction.java. What could i do to rectify this?
> Could provide you with required code if necessary..
>=20
> Thanks,
> Aruna=20
>=20
> --=20
> View this message in context:=20
> http://old.nabble.com/Displaying-an-image-in-JSP-in-struts%2Bt
iles-project-tp27020146p27020146.html
> Sent from the Struts - User mailing list archive at Nabble.com.
>=20
>=20
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> For additional commands, e-mail: user-help@struts.apache.org
>=20
>=20
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