View in image from database

Question

hi will i be able to view image from my database using this class, am using jdeveloper 11g release 2
package TaskFlowView;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
public class ImageServlet extends HttpServlet {
    private static final String CONTENT_TYPE =
        "image/jpg; charset=utf-8";
     * @param config
     * @throws ServletException
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
    public void doGet(HttpServletRequest request,
                      HttpServletResponse response) throws ServletException,
                                                           IOException {
        response.setContentType(CONTENT_TYPE);
        response.setContentType(CONTENT_TYPE);
        String detailDocumentId = request.getParameter("detail");
        String thumbnailDocumentId = request.getParameter("thumbnail");
        boolean thumbnail = true;
        String DocumentId = null;
        OutputStream os = response.getOutputStream();
        Connection conn = null;
        try {
            Context ctx = new InitialContext();
            DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/SMSDEV");
            conn = ds.getConnection();
            PreparedStatement statement = conn.prepareStatement(
              "SELECT file_name, " +
              "dlin.id, " +
              "FROM  sms_document_links dlin " +
              "sms_document_references dref" +
              "WHERE dref.id = ?" +
              "dref.dlin_id = dlin.id");
            if (detailDocumentId != null) {
                DocumentId = detailDocumentId;
                thumbnail = false;
            } else {
                DocumentId = thumbnailDocumentId;
            statement.setString(1,(thumbnail ? "Y" : "N"));           
            statement.setInt(2, new Integer(DocumentId));
            ResultSet rs = statement.executeQuery();
            if (rs.next()) {
                Blob blob = rs.getBlob("IMAGE");
                BufferedInputStream in = new BufferedInputStream(blob.getBinaryStream());
                int b; byte[] buffer = new byte[10240];
                while ((b = in.read(buffer, 0, 10240)) != -1) { os.write(buffer, 0, b); }
                os.close();
        } catch (Exception e){
            System.out.println(e);
        } finally {
            try{
                if (conn != null){
                     conn.close();
             } catch (SQLException sqle){
                 System.out.println("SQLException error");
    }Edited by: Tshifhiwa on 2012/05/29 1:52 PM
Edited by: Tshifhiwa on 2012/05/29 1:56 PM

Answer 1

hi this what i have done, am still having error with my iterator line= DCIteratorBinding lBinding = lBindingContainer.findIteratorBinding(sms4200ModuleDataControlIter),the error say type or variable sms4200ModuleDataControlIter not found but thats the name in my page defination,and is this the class i must write this method
import com.sun.rowset.internal.Row;
import com.sun.xml.internal.messaging.saaj.packaging.mime.internet.ContentType;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.sql.SQLException;
import oracle.jbo.domain.BlobDomain;
import oracle.jbo.domain.Timestamp;
import oracle.jbo.server.AttributeDefImpl;
import oracle.jbo.server.EntityImpl;
import oracle.jbo.server.ViewRowImpl;
import javax.faces.event.ValueChangeEvent;
import org.apache.myfaces.trinidad.model.UploadedFile;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import javax.faces.event.ValueChangeEvent;
import oracle.adf.model.binding.DCBindingContainer;
import oracle.adf.model.binding.DCIteratorBinding;
import oracle.adf.model.BindingContext;
import oracle.adf.model.binding.DCIteratorBindingDef;
import sms4200.common.SmsDocumentLinksViewRow;
import sun.misc.IOUtils;
// ---    File generated by Oracle ADF Business Components Design Time.
// ---    Wed May 30 13:12:49 CAT 2012
// ---    Custom code may be added to this class.
// ---    Warning: Do not modify method signatures of generated methods.
public class SmsDocumentLinksViewRowImpl extends ViewRowImpl implements SmsDocumentLinksViewRow {
    public static final int ENTITY_SMSDOCUMENTLINKS = 0;
    private static final String CONTENT_TYPE =
        "image/jpg; charset=utf-8";
        DocumentImage {
            public Object get(SmsDocumentLinksViewRowImpl obj) {
                return obj.getDocumentImage();
            public void put(SmsDocumentLinksViewRowImpl obj, Object value) {
                obj.setDocumentImage((BlobDomain)value);
  public static final int DOCUMENTIMAGE = AttributesEnum.DocumentImage.index();
    public BlobDomain getDocumentImage() {
        return (BlobDomain) getAttributeInternal(DOCUMENTIMAGE);
     * Sets <code>value</code> as attribute value for DOCUMENT_IMAGE using the alias name DocumentImage.
     * @param value value to set the DOCUMENT_IMAGE
    public void setDocumentImage(BlobDomain value) {
        setAttributeInternal(DOCUMENTIMAGE, value);
    private BlobDomain createBlobDomain(UploadedFile file)
        // init the internal variables
        InputStream in = null;
        BlobDomain blobDomain = null;
        OutputStream out = null;
        try
            // Get the input stream representing the data from the client
            in = file.getInputStream();
            // create the BlobDomain datatype to store the data in the db
            blobDomain = new BlobDomain();
            // get the outputStream for hte BlobDomain
            out = blobDomain.getBinaryOutputStream();
            // copy the input stream into the output stream
    39               * IOUtils is a class from the Apache Commons IO Package (http://www.apache.org/)
    40               * Here version 2.0.1 is used
    41               * please download it directly from http://projects.apache.org/projects/commons_io.html
    42               */
            IOUtils.copy(in, out);
        catch (IOException e)
            e.printStackTrace();
        catch (SQLException e)
            e.fillInStackTrace();
        // return the filled BlobDomain
        return blobDomain;
    public void uploadFileValueChangeEvent(ValueChangeEvent valueChangeEvent){
                // The event give access to an Uploade dFile which contains data about the file and its content
                // Get the original file name
                UploadedFile file = (UploadedFile) valueChangeEvent.getNewValue();
                // Get the original file name
                String fileName = file.getFilename();
                String contentType = CONTENT_TYPE.valueOf(fileName);
                    //get(fileName);
                // get the current roew from the ImagesView2Iterator via the binding
                DCBindingContainer lBindingContainer =
                    (DCBindingContainer) BindingContext.getCurrent().getCurrentBindingsEntry();
               // DCIteratorBinding lBinding = lBindingContainer.findIteratorBinding(&quot;sms4200ModuleDataControlIter&quot;);
                  DCIteratorBinding lBinding = lBindingContainer.findIteratorBinding(sms4200ModuleDataControlIter);
                Row newRow = (Row)lBinding.getCurrentRow();
                // set the file name
                //newRow.setAttribute(&quot;DOCUMENTIMAGE&quot; fileName);
                newRow.setColumnObject(DOCUMENTIMAGE, fileName);
                // create the BlobDomain and set it into the row
               // newRow.setAttribute(DOCUMENTIMAGE, createBlobDomain(file));
                newRow.setColumnObject(DOCUMENTIMAGE, createBlobDomain(file));
                // set the mime type
                //newRow.setAttribute(&quot;ContentType&quot;, contentType);
                newRow.setColumnObject(DOCUMENTIMAGE,contentType);                                                       
my PageDef file is
<?xml version="1.0" encoding="UTF-8" ?>
<pageDefinition xmlns="http://xmlns.oracle.com/adfm/uimodel" version="11.1.2.60.81" id="sms4200PageDef"
                Package="SmsFrontUI.pageDefs">
  <parameters/>
  <executables>
    <variableIterator id="variables"/>
    <iterator Binds="ViewObj1" RangeSize="25" DataControl="TaskFlowAppModuleDataControl" id="ViewObj1Iterator"/>
    <iterator Binds="sms4200_1" RangeSize="25" DataControl="TaskFlowAppModuleDataControl" id="sms4200_1Iterator"/>
    <iterator id="sms4200ModuleDataControlIter" DataControl="sms4200ModuleDataControl" RangeSize="25"
              Binds="SmsDocumentLinksView1"/>
  </executables>
  <bindings>
    <attributeValues IterBinding="ViewObj1Iterator" id="IntegrationTypeName">
      <AttrNames>
        <Item Value="IntegrationTypeName"/>
      </AttrNames>
    </attributeValues>
    <attributeValues IterBinding="ViewObj1Iterator" id="Name">
      <AttrNames>
        <Item Value="Name"/>
      </AttrNames>
    </attributeValues>
    <attributeValues IterBinding="ViewObj1Iterator" id="LocalUpDirectory">
      <AttrNames>
        <Item Value="LocalUpDirectory"/>
      </AttrNames>
    </attributeValues>
    <attributeValues IterBinding="sms4200_1Iterator" id="IntegrationTypeName1">
      <AttrNames>
        <Item Value="IntegrationTypeName"/>
      </AttrNames>
    </attributeValues>
    <attributeValues IterBinding="sms4200_1Iterator" id="Name1">
      <AttrNames>
        <Item Value="Name"/>
      </AttrNames>
    </attributeValues>
    <attributeValues IterBinding="sms4200_1Iterator" id="LocalUpDirectory1">
      <AttrNames>
        <Item Value="LocalUpDirectory"/>
      </AttrNames>
    </attributeValues>
  </bindings>
</pageDefinition>and my view is
<?xml version="1.0" encoding="windows-1252" ?>
<!DOCTYPE ViewObject SYSTEM "jbo_03_01.dtd">
<!---->
<ViewObject
  xmlns="http://xmlns.oracle.com/bc4j"
  Name="SmsDocumentLinksView"
  Version="11.1.2.60.81"
  SelectList="SmsDocumentLinks.ID,
       SmsDocumentLinks.EDRMS_ID,
       SmsDocumentLinks.FILE_PLAN_NO,
       SmsDocumentLinks.DOCUMENT_NAME,
       SmsDocumentLinks.SCAN_DT,
       SmsDocumentLinks.DATE_CREATED,
       SmsDocumentLinks.DATE_MODIFIED,
       SmsDocumentLinks.MODIFIED_BY,
       SmsDocumentLinks.CREATED_BY,
       SmsDocumentLinks.DOCUMENT_IMAGE,
       SmsDocumentLinks.DITYP_ID,
       SmsDocumentLinks.DWSTA_CODE,
       SmsDocumentLinks.SOURCE_FILE_NAME"
  FromList="SMS_DOCUMENT_LINKS SmsDocumentLinks"
  BindingStyle="OracleName"
  CustomQuery="false"
  PageIterMode="Full"
  UseGlueCode="false"
  RowClass="sms4200.SmsDocumentLinksViewRowImpl"
  ComponentClass="sms4200.SmsDocumentLinksViewImpl"
  RowInterface="sms4200.common.SmsDocumentLinksViewRow"
  ClientRowProxyName="sms4200.client.SmsDocumentLinksViewRowClient">
  <DesignTime>
    <Attr Name="_codeGenFlag2" Value="Access|Coll|Prog|VarAccess"/>
    <Attr Name="_isCodegen" Value="true"/>
  </DesignTime>
  <EntityUsage
    Name="SmsDocumentLinks"
    Entity="sms4200.SmsDocumentLinks"/>
  <ViewAttribute
    Name="Id"
    IsNotNull="true"
    PrecisionRule="true"
    EntityAttrName="Id"
    EntityUsage="SmsDocumentLinks"
    AliasName="ID">
    <TransientExpression><![CDATA[(new oracle.jbo.server.SequenceImpl("SMS_CAT_SEQ",adf.object.getDBTransaction())).getSequenceNumber()]]></TransientExpression>
  </ViewAttribute>
  <ViewAttribute
    Name="EdrmsId"
    PrecisionRule="true"
    EntityAttrName="EdrmsId"
    EntityUsage="SmsDocumentLinks"
    AliasName="EDRMS_ID"/>
  <ViewAttribute
    Name="FilePlanNo"
    PrecisionRule="true"
    EntityAttrName="FilePlanNo"
    EntityUsage="SmsDocumentLinks"
    AliasName="FILE_PLAN_NO"/>
  <ViewAttribute
    Name="DocumentName"
    PrecisionRule="true"
    EntityAttrName="DocumentName"
    EntityUsage="SmsDocumentLinks"
    AliasName="DOCUMENT_NAME"/>
  <ViewAttribute
    Name="ScanDt"
    PrecisionRule="true"
    EntityAttrName="ScanDt"
    EntityUsage="SmsDocumentLinks"
    AliasName="SCAN_DT"/>
  <ViewAttribute
    Name="DateCreated"
    PrecisionRule="true"
    EntityAttrName="DateCreated"
    EntityUsage="SmsDocumentLinks"
    AliasName="DATE_CREATED"/>
  <ViewAttribute
    Name="DateModified"
    PrecisionRule="true"
    EntityAttrName="DateModified"
    EntityUsage="SmsDocumentLinks"
    AliasName="DATE_MODIFIED"/>
  <ViewAttribute
    Name="ModifiedBy"
    PrecisionRule="true"
    EntityAttrName="ModifiedBy"
    EntityUsage="SmsDocumentLinks"
    AliasName="MODIFIED_BY"/>
  <ViewAttribute
    Name="CreatedBy"
    PrecisionRule="true"
    EntityAttrName="CreatedBy"
    EntityUsage="SmsDocumentLinks"
    AliasName="CREATED_BY"/>
  <ViewAttribute
    Name="DocumentImage"
    IsQueriable="false"
    PrecisionRule="true"
    EntityAttrName="DocumentImage"
    EntityUsage="SmsDocumentLinks"
    AliasName="DOCUMENT_IMAGE"/>
  <ViewAttribute
    Name="DitypId"
    PrecisionRule="true"
    EntityAttrName="DitypId"
    EntityUsage="SmsDocumentLinks"
    AliasName="DITYP_ID"/>
  <ViewAttribute
    Name="DwstaCode"
    PrecisionRule="true"
    EntityAttrName="DwstaCode"
    EntityUsage="SmsDocumentLinks"
    AliasName="DWSTA_CODE"/>
  <ViewAttribute
    Name="SourceFileName"
    PrecisionRule="true"
    EntityAttrName="SourceFileName"
    EntityUsage="SmsDocumentLinks"
    AliasName="SOURCE_FILE_NAME"/>
</ViewObject>Edited by: Tshifhiwa on 2012/05/30 8:57 PM