与Java Web应用程序的Birt集成

0
投票

web.xml中

<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <display-name>BirtDemo</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>loadReport</servlet-name> <servlet-class>BirtIntegration.Controller.BirtReportController</servlet-class> </servlet> <servlet-mapping> <servlet-name>loadReport</servlet-name> <url-pattern>/loadReport</url-pattern> </servlet-mapping> </web-app>
BirtIntegration.BirtViewer
package BirtIntegration.BirtViewer; import java.math.BigDecimal; import java.text.ParseException; import java.util.Date; import java.util.Locale; import org.eclipse.birt.core.format.DateFormatter; import org.eclipse.birt.core.format.NumberFormatter; import org.eclipse.birt.core.format.StringFormatter; import org.eclipse.birt.report.engine.api.IScalarParameterDefn; import com.ibm.icu.util.TimeZone; import com.ibm.icu.util.ULocale; /** * Utilites class to convert report parameter value between object and string. */ public class ReportParameterConverter { private String format = null; private ULocale uLocale = null; private TimeZone timeZone = TimeZone.getDefault( ); private StringFormatter sf = null; private DateFormatter df = null; private NumberFormatter nf = null; /** * @param format format to format report parameter, or recover parameter value as object * given a string as report parameter value * @param locale the locale to format/parse the parameter value */ public ReportParameterConverter( String format, Locale locale ) { this( format, ULocale.forLocale( locale ) ); } /** * Constructor. * * @param format * @param uLocale */ public ReportParameterConverter( String format, ULocale uLocale ) { this( format, uLocale, null ); } /** * Constructor. * * @param format * @param uLocale * @param timeZone */ public ReportParameterConverter( String format, ULocale uLocale, TimeZone timeZone ) { this.format = format; this.uLocale = uLocale; if ( timeZone != null ) { this.timeZone = timeZone; } } /** * Get string formatter. * * @return StringFormatter object */ private StringFormatter getStringFormatter( ) { if ( sf == null && uLocale != null ) { sf = new StringFormatter( uLocale ); if ( format != null ) { sf.applyPattern( format ); } } return sf; } /** * Get number formatter. * * @return NumberFormatter object */ private NumberFormatter getNumberFormatter( ) { if ( nf == null && uLocale != null ) { nf = new NumberFormatter( uLocale ); if ( format != null ) { nf.applyPattern( format ); } } return nf; } /** * Get date formatter. * * @return DateFormatter object */ private DateFormatter getDateFormatter( ) { if ( df == null && uLocale != null ) { df = new DateFormatter( uLocale, timeZone ); if ( format != null ) { df.applyPattern( format ); } } return df; } /** * Convert report parameter value object into string. * * @param reportParameterObj report parameter value object. * @return parameter value in string. */ public String format( Object reportParameterObj ) { String reportParameterValue = null; if ( reportParameterObj != null && uLocale != null ) { if ( reportParameterObj instanceof String ) { StringFormatter sf = getStringFormatter( ); if ( sf != null ) { reportParameterValue = sf.format( ( String ) reportParameterObj ); } else { reportParameterValue = reportParameterObj.toString( ); } } else if ( reportParameterObj instanceof Date ) { DateFormatter df = getDateFormatter( ); if ( df != null ) { reportParameterValue = df.format( ( Date ) reportParameterObj ); } else { reportParameterValue = reportParameterObj.toString( ); } } else if ( reportParameterObj instanceof Double ) { NumberFormatter nf = getNumberFormatter( ); if ( nf != null ) { reportParameterValue = nf .format( ( (Double) reportParameterObj ) .doubleValue( ) ); } else { reportParameterValue = reportParameterObj.toString( ); } } else if ( reportParameterObj instanceof BigDecimal ) { NumberFormatter nf = getNumberFormatter( ); if ( nf != null ) { reportParameterValue = nf .format( (BigDecimal) reportParameterObj ); } else { reportParameterValue = reportParameterObj.toString( ); } } else if ( reportParameterObj instanceof Boolean ) { reportParameterValue = ( ( Boolean ) reportParameterObj ).toString( ); } else if ( reportParameterObj instanceof Number ) { NumberFormatter nf = getNumberFormatter( ); if ( nf != null ) { reportParameterValue = nf.format( ( ( Number ) reportParameterObj ) ); } else { reportParameterValue = reportParameterObj.toString( ); } } else { reportParameterValue = ( reportParameterObj.toString( ) ); } } return reportParameterValue; } /** * Convert report parameter from string into object. Need to be pointed out * is it return a Double object when the value type is Float. * * @param reportParameterValue * report parameter value in string. * @param parameterValueType * report parameter type. * @return parameter value object. */ public Object parse( String reportParameterValue, int parameterValueType ) { Object parameterValueObj = null; if ( reportParameterValue != null && uLocale != null ) { switch ( parameterValueType ) { case IScalarParameterDefn.TYPE_STRING: { StringFormatter sf = getStringFormatter( ); if ( sf == null ) { parameterValueObj = null; break; } try { parameterValueObj = sf.parser( reportParameterValue ); } catch ( ParseException e ) { parameterValueObj = reportParameterValue; } break; } case IScalarParameterDefn.TYPE_DATE_TIME: { parameterValueObj = parseDateTime( reportParameterValue ); break; } case IScalarParameterDefn.TYPE_FLOAT: { NumberFormatter nf = getNumberFormatter( ); if ( nf == null ) { parameterValueObj = null; break; } try { Number num = nf.parse( reportParameterValue ); if ( num != null ) { parameterValueObj = new Double( num.toString( ) ); } } catch ( ParseException e ) { nf.applyPattern( "General Number" ); try { Number num = nf.parse( reportParameterValue ); if ( num != null ) { parameterValueObj = new Double( num.toString( ) ); } } catch ( ParseException ex ) { parameterValueObj = null; } } break; } case IScalarParameterDefn.TYPE_DECIMAL: { NumberFormatter nf = getNumberFormatter( ); if ( nf == null ) { parameterValueObj = null; break; } try { Number num = nf.parse( reportParameterValue ); if ( num != null ) { parameterValueObj = new BigDecimal( num.toString( ) ); } } catch ( ParseException e ) { nf.applyPattern( "General Number" ); try { Number num = nf.parse( reportParameterValue ); if ( num != null ) { parameterValueObj = new BigDecimal( num.toString( ) ); } } catch ( ParseException ex ) { parameterValueObj = null; } } break; } case IScalarParameterDefn.TYPE_BOOLEAN: { parameterValueObj = Boolean.valueOf( reportParameterValue ); break; } case IScalarParameterDefn.TYPE_DATE: { try { parameterValueObj = java.sql.Date .valueOf( reportParameterValue ); } catch ( IllegalArgumentException ie ) { parameterValueObj = parseDateTime( reportParameterValue ); if ( parameterValueObj != null ) { parameterValueObj = new java.sql.Date( ( (Date) parameterValueObj ).getTime( ) ); } } break; } case IScalarParameterDefn.TYPE_TIME: { try { parameterValueObj = java.sql.Time .valueOf( reportParameterValue ); } catch ( IllegalArgumentException ie ) { parameterValueObj = parseDateTime( reportParameterValue ); if ( parameterValueObj != null ) { parameterValueObj = new java.sql.Time( ( (Date) parameterValueObj ).getTime( ) ); } } break; } //can use class DataTypeUtil to convert case IScalarParameterDefn.TYPE_INTEGER: { NumberFormatter nf = getNumberFormatter( ); if ( nf == null ) { parameterValueObj = null; break; } try { Number num = nf.parse( reportParameterValue ); if ( num != null ) { parameterValueObj = Integer.valueOf( num.intValue( ) ); } } catch( ParseException ex ) { nf.applyPattern( "General Number" ); try { Number num = nf.parse( reportParameterValue ); if ( num != null ) { parameterValueObj = Integer.valueOf( num.intValue( ) ); } } catch( ParseException pex ) { try { parameterValueObj = Integer.valueOf( reportParameterValue ); } catch( NumberFormatException nfe ) { parameterValueObj = null; } } } } } } return parameterValueObj; } /** * Parse the input string to an object. * * @param reportParameterValue * input string to parse * @return an object */ protected Object parseDateTime( String reportParameterValue ) { DateFormatter df = getDateFormatter( ); if ( df == null ) { return null; } try { return df.parse( reportParameterValue ); } catch ( ParseException e ) { df = new DateFormatter( "Short Date", uLocale ); try { return df.parse( reportParameterValue ); } catch ( ParseException ex ) { df = new DateFormatter( "Medium Time", uLocale ); try { return df.parse( reportParameterValue ); } catch ( ParseException exx ) { return null; } } } } }

0
投票

package BirtIntegration.BirtViewer;

import java.io.File;
import java.util.logging.Level;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import BirtIntegration.factory.BirtEngineFactory;

/**
 * This class is responsible for initlizing birt engine configuring birt engine,and processing and rendering reports.
 *
 */
public class ReportProcessor {

    private BirtEngineFactory birtEngineFactory; 
    private ReportRenderer reportRenderer;
    private static ReportProcessor reportProcessor =null; 

    //private constructor for single tone object. 
    private ReportProcessor(){

    }

    public boolean initilizeBirtEngine(){
        boolean isInitialized =true;
        reportRenderer = new ReportRenderer();
        reportRenderer.setBirtEngine( this.getBitEngineFactory().getEngine() );

        System.out.println("Bit Engine Successfully Started.");

        return isInitialized;
    }

    /**
     * Annotated with @ bean and will create BirtEngineFactory bean.
     * @return
     */
    private BirtEngineFactory getBitEngineFactory(){

        birtEngineFactory = BirtEngineFactory.getBirtEngineFactory() ;
        //uncomment to use logging
        //birtEngineFactory.setLogLevel( Level.FINEST);
        //birt engine logs will be created under this directory.
        //currently this line is commented
        //birtEngineFactory.setLogDirectory( new File("E:/WorkSpaces/PracticeWorkspace/BirtIntegration/birtlogs"));

      return birtEngineFactory; 
    }


    public void shutDownBirtEngine(){
        birtEngineFactory.destroy();

    }

    public void processReport(HttpServletRequest request,
        HttpServletResponse response) {
        reportRenderer.processReportDesignDocAndRenderReport(request, response);
    }

    public static ReportProcessor getReportProcessor() {
        if(reportProcessor !=null){
            return reportProcessor;
        }
        reportProcessor = new ReportProcessor();
        return reportProcessor;
    }

}

0
投票

package BirtIntegration.BirtViewer;

import java.io.UnsupportedEncodingException;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.eclipse.birt.report.engine.api.EXCELRenderOption;
import org.eclipse.birt.report.engine.api.EngineConstants;
import org.eclipse.birt.report.engine.api.HTMLRenderOption;
import org.eclipse.birt.report.engine.api.HTMLServerImageHandler;
import org.eclipse.birt.report.engine.api.IGetParameterDefinitionTask;
import org.eclipse.birt.report.engine.api.IPDFRenderOption;
import org.eclipse.birt.report.engine.api.IParameterDefnBase;
import org.eclipse.birt.report.engine.api.IRenderOption;
import org.eclipse.birt.report.engine.api.IRenderTask;
import org.eclipse.birt.report.engine.api.IReportDocument;
import org.eclipse.birt.report.engine.api.IReportEngine;
import org.eclipse.birt.report.engine.api.IReportRunnable;
import org.eclipse.birt.report.engine.api.IRunTask;
import org.eclipse.birt.report.engine.api.IScalarParameterDefn;
import org.eclipse.birt.report.engine.api.PDFRenderOption;
import org.eclipse.birt.report.engine.api.RenderOption;
/**
 * This class is responsible for processing the reports and rendering or downloading the reports.
 * It handles the request for rendering the report.
 * The method processReportDesignDocAndRenderReport writes the content in response output stream.
 * 
 */
public class ReportRenderer  {


    public static final String PARAM_ISNULL = "__isnull";
    public static final String UTF_8_ENCODE = "UTF-8"; 

    private IReportEngine birtEngine;
    private String reportNameRequestParameter = "ReportName" ; 
    private String reportFormatRequestParameter = "ReportFormat"; 
    private IRenderOption renderOptions ;

    //private static final Logger logger = Logger.getLogger(BirtView.class);

    public void setRenderOptions(IRenderOption ro) { 
        this.renderOptions = ro;
    } 


    /**
     * This is overridden method which responsible for processing report  i.e .rptdesign document.and also rendering the report.
     * <br>It also handles downloading the report.
     * 
     */

    protected void processReportDesignDocAndRenderReport(HttpServletRequest request,
            HttpServletResponse response) {

        try{

        //get report name from request object. 
        String reportName = request.getParameter( this.reportNameRequestParameter );

        //logger.info("Processing report:"+reportName);

        //get format in which we are going to render report i.e:html,pdf,excel
        String format = request.getParameter( this.reportFormatRequestParameter );

        //pagination handling 
        String pageNumber = request.getParameter("pageNumber");
        int currentPageNumber=0;
        if(pageNumber!=null&&!pageNumber.equals(""))
        {
            currentPageNumber = Integer.valueOf(pageNumber);

        }

        //give the download report Name here.
        String downloadFileName = "MyReport";

        //Base URL
        String baseUrl = request.getScheme() + "://"  + request.getServerName() + ":"  + request.getServerPort()+request.getContextPath();

        ServletContext sc = request.getSession().getServletContext();
        if( format == null ){
            format="html";//default format
        }


        IReportRunnable runnable = null;

        //opend design document
        runnable = birtEngine.openReportDesign( sc.getRealPath("/Reports")+"/"+reportName );

        //first process the report using Iruntask which will create the temp.rptdocument 
        IRunTask iRunTask = birtEngine.createRunTask(runnable);

        iRunTask.getAppContext().put( EngineConstants.APPCONTEXT_BIRT_VIEWER_HTTPSERVET_REQUEST, request );

        //put the parameter values from request to the report parameter
        iRunTask.setParameterValues(discoverAndSetParameters( runnable, request ));

        //create temp rpddocument
        iRunTask.run(sc.getRealPath("/Reports")+"/temp.rptdocument");
        iRunTask.close();


        //now do the rendering operation
        IReportDocument reportDoc = birtEngine.openReportDocument( sc.getRealPath("/Reports")+"/temp.rptdocument" );
        IRenderTask iRenderTask= birtEngine.createRenderTask(reportDoc);

        //set the format 
        response.setContentType( birtEngine.getMIMEType( format ));
        IRenderOption options =  null == this.renderOptions ? new RenderOption() : this.renderOptions;

        //if html set html related options 
        if( format.equalsIgnoreCase("html")){

            HTMLRenderOption htmlOptions = new HTMLRenderOption( options);
            htmlOptions.setOutputFormat("html");
            htmlOptions.setOutputStream(response.getOutputStream());
            htmlOptions.setImageHandler(new HTMLServerImageHandler());
            htmlOptions.setHtmlPagination(true);
            htmlOptions.setBaseImageURL(baseUrl+"/images");//TODO:Change from local host to actual path
            htmlOptions.setImageDirectory(sc.getRealPath("/images"));
            htmlOptions.setSupportedImageFormats("PNG");
            htmlOptions.setEmbeddable(true);


            iRenderTask.setRenderOption(htmlOptions);


            //if pdf set pdf related downloading options 
        }else if( format.equalsIgnoreCase("pdf") ){

            PDFRenderOption pdfOptions = new PDFRenderOption( options );
            pdfOptions.setSupportedImageFormats("PNG;GIF;JPG;BMP");

            pdfOptions.setOutputFormat("pdf");
            pdfOptions.setImageHandler(new HTMLServerImageHandler());
            pdfOptions.setBaseURL(baseUrl);
            //pdfOptions.setOutputFileName("my.pdf");
            pdfOptions.setOption(IPDFRenderOption.PAGE_OVERFLOW, IPDFRenderOption.FIT_TO_PAGE_SIZE);
            response.setHeader( "Content-Disposition", "attachment; filename="+downloadFileName );
            pdfOptions.setOutputStream(response.getOutputStream());

            iRenderTask.setRenderOption(pdfOptions);


        //if XLS set XLS related downloading options 
        }else if(format.equalsIgnoreCase("xls")){

              EXCELRenderOption xlsOptions = new EXCELRenderOption(options); 
              xlsOptions.setOutputFormat("xls");
              response.setHeader(   "Content-Disposition", "attachment; filename="+downloadFileName);
              xlsOptions.setImageHandler(new HTMLServerImageHandler());
              xlsOptions.setOutputStream(response.getOutputStream());
              //xlsOptions.setOption(IRenderOption.EMITTER_ID, "org.uguess.birt.report.engine.emitter.xls");
              xlsOptions.setOption(IRenderOption.EMITTER_ID, "org.eclipse.birt.report.engine.emitter.prototype.excel");
              iRenderTask.setRenderOption(xlsOptions);

        }else{

            response.setHeader( "Content-Disposition", "attachment; filename=\"" + downloadFileName + "\"" );
            options.setOutputStream(response.getOutputStream());
            options.setOutputFormat(format);
            iRenderTask.setRenderOption(options);

        }

        /*
         * This is used for pagination and setting the page number we want to display 
         */
        long pageCount = iRenderTask.getTotalPage();
        if(currentPageNumber!=0)
        {
            if(pageCount >=currentPageNumber){
                iRenderTask.setPageNumber(currentPageNumber);
            }
        }
        //save the page count in session to use for pagination. 
        //using this page count we can implement pagination.
        request.getSession().setAttribute("pageCount", pageCount);


        //render report
        iRenderTask.render();
        //close task and doc
        iRenderTask.close();
        reportDoc.close();

        //logger.info("Processing report completed successfully:"+reportName);

        }catch (Exception e) {

            //logger.error("Exception while proceessing report ",e);
            e.printStackTrace();
        }
    }

    /**
     * Set parameters from request to the report parameter.
     * 
     * @param report
     * @param request
     * @return
     * @throws Exception
     */
    protected HashMap discoverAndSetParameters( IReportRunnable report, HttpServletRequest request ) throws Exception{

        HashMap<String, Object> parms = new HashMap<String, Object>();  
        IGetParameterDefinitionTask task = birtEngine.createGetParameterDefinitionTask( report );

        @SuppressWarnings("unchecked")
        Collection<IParameterDefnBase> params = task.getParameterDefns( true );
        Iterator<IParameterDefnBase> iter = params.iterator( );
        while ( iter.hasNext( ) )
        {
            IParameterDefnBase param = (IParameterDefnBase) iter.next( );

            IScalarParameterDefn scalar = (IScalarParameterDefn) param;
            if( request.getParameter(param.getName()) != null && !request.getParameter(param.getName()).trim().equals("")){
                parms.put( param.getName(), getParamValueObject( request, scalar));
            }
        }
        task.close();
        return parms;
    }
    /**
     * Get parameter value
     * @param request
     * @param parameterObj
     * @return
     * @throws Exception
     */
    protected Object getParamValueObject( HttpServletRequest request,
            IScalarParameterDefn parameterObj ) throws Exception
            {
        String paramName = parameterObj.getName( );
        String format = parameterObj.getDisplayFormat( );
        if ( doesReportParameterExist( request, paramName ) )
        {
            ReportParameterConverter converter = new ReportParameterConverter(format, request.getLocale( ) );
            // Get value from http request
            String paramValue = getReportParameter( request,
                    paramName, null );
            return converter.parse( paramValue, parameterObj.getDataType( ) );
        }
        return null;
            }

    public static String getReportParameter( HttpServletRequest request,
            String name, String defaultValue )
    {
        assert request != null && name != null;

        String value = getParameter( request, name );
        if ( value == null || value.length( ) <= 0 ) // Treat
            // it as blank value.
        {
            value = ""; //$NON-NLS-1$
        }

        Map paramMap = request.getParameterMap( );
        if ( paramMap == null || !paramMap.containsKey( name ) )
        {
            value = defaultValue;
        }

        Set nullParams = getParameterValues( request, PARAM_ISNULL );

        if ( nullParams != null && nullParams.contains( name ) )
        {
            value = null;
        }

        return value;
    }

    /**
     * Check if report parameter exist
     * @param request
     * @param name
     * @return
     */
    public static boolean doesReportParameterExist( HttpServletRequest request,
            String name )
    {
        assert request != null && name != null;

        boolean isExist = false;

        Map paramMap = request.getParameterMap( );
        if ( paramMap != null )
        {
            isExist = ( paramMap.containsKey( name ) );
        }
        Set nullParams = getParameterValues( request, PARAM_ISNULL );
        if ( nullParams != null && nullParams.contains( name ) )
        {
            isExist = true;
        }

        return isExist;
    }
    /**
     * Get paramter value from request object
     * @param request
     * @param parameterName
     * @return
     */
    public static String getParameter( HttpServletRequest request,
            String parameterName )
    {

        if ( request.getCharacterEncoding( ) == null )
        {
            try
            {
                request.setCharacterEncoding( UTF_8_ENCODE );
            }
            catch ( UnsupportedEncodingException e )
            {
            }
        }
        return request.getParameter( parameterName );
    }

    //allows setting parameter values to null using __isnull
    public static Set getParameterValues( HttpServletRequest request,
            String parameterName )
    {
        Set<String> parameterValues = null;
        String[] parameterValuesArray = request.getParameterValues( parameterName );

        if ( parameterValuesArray != null )
        {
            parameterValues = new LinkedHashSet<String>( );

            for ( int i = 0; i < parameterValuesArray.length; i++ )
            {
                parameterValues.add( parameterValuesArray[i] );
            }
        }

        return parameterValues;
    }

    /**
     * Setter for birtEngine
     * @param birtEngine
     */
    public void setBirtEngine(IReportEngine birtEngine) {
        this.birtEngine = birtEngine;
    }
}

0
投票

BirtIntegration.Controller

package BirtIntegration.Controller; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import BirtIntegration.BirtViewer.ReportProcessor; public class BirtReportController extends HttpServlet { //this is the single tone class. private ReportProcessor processor ; @Override public void init(){ processor = ReportProcessor.getReportProcessor(); processor.initilizeBirtEngine(); System.out.println("Engine Initilized!!"); } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("processing report complete"); processor.processReport(request, response); } @Override public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } @Override public void destroy(){ processor.shutDownBirtEngine(); } }
BirtIntegration.factory
package BirtIntegration.factory; import java.io.File; import org.eclipse.birt.core.exception.BirtException; import org.eclipse.birt.core.framework.Platform; import org.eclipse.birt.report.engine.api.EngineConfig; import org.eclipse.birt.report.engine.api.IReportEngine; import org.eclipse.birt.report.engine.api.IReportEngineFactory; /** * *Factory class for the instance of the {@link IReportEngine report engine}. *Responsible for creating IReportEngine and also destroying the engine. * */ public class BirtEngineFactory { public boolean isSingleton(){ return true ; } private IReportEngine birtEngine ; private File _resolvedDirectory ; private java.util.logging.Level logLevel ; private static BirtEngineFactory birtEngineFactory; private BirtEngineFactory(){ } public static BirtEngineFactory getBirtEngineFactory(){ if(birtEngineFactory == null){ birtEngineFactory = new BirtEngineFactory(); } return birtEngineFactory; } /** * Destroy birt engine. * and shut down platform * * call this method while destroying your application context. */ public void destroy() { try{ birtEngine.destroy(); Platform.shutdown() ; System.out.println("Engine successfully destroyed and platform is shutdown!!"); }catch (Exception e) { e.printStackTrace(); } } /** * Set log level * @param ll */ public void setLogLevel( java.util.logging.Level ll){ this.logLevel = ll ; } /** * Setting log file. * if log directory is not present.It will be created * @param f */ public void setLogDirectory ( java.io.File f ){ //TODO: if puts wrong path please validate that here. if(!f.exists()){ f.mkdirs(); } this._resolvedDirectory = f; } /** * Factory method for birt engine. */ public IReportEngine getEngine(){ if(birtEngine !=null){ } EngineConfig config = getEngineConfig(); try { Platform.startup( config ); } catch ( BirtException e ) { e.printStackTrace(); } IReportEngineFactory factory = (IReportEngineFactory) Platform.createFactoryObject( IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY ); IReportEngine be = factory.createReportEngine( config ); this.birtEngine = be ; return be ; } /** * Set engine configuration like logs and other things as per the need * @return */ public EngineConfig getEngineConfig(){ EngineConfig config = new EngineConfig(); //This line injects the Spring Context into the BIRT Context //Put what ever you want to put in Birt Context which will be avail thought out the life cycle of birt engine context //config.getAppContext().put("struts", springContext ); //config.setLogConfig( null != this._resolvedDirectory ? this._resolvedDirectory.getAbsolutePath() : null , this.logLevel); //please take care of how many log files are created and with how much size //below code some how not taking of it.Check javaDoc of EngineConfig //config.setLogMaxBackupIndex(5); //config.setLogRollingSize(5242880); //5mb return config; } public Class<?> getObjectType() { return IReportEngine.class; } }

0
投票

JSP / reports.jsp

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd"> <HTML> <HEAD> <TITLE>Reports</TITLE> <script type="text/javascript" src="/BirtDemo/js/jquery-1.7.1.js"></script> <script type="text/javascript" src="/BirtDemo/js/report.js"> </script> </HEAD> <BODY style="background-color: #F0F0F0;"> <div> <h3 align="center" style="color:#84A9CF">Birt Integration With Web Application Using Ajax</h3> <div style="float: left;width: 25%;"> <fieldset style="background-color: white;"> <legend > <b style="color:#84A9CF">Select Reports</b> </legend> <ul> <li> <a href="#" onclick="generateReport('First_Report.rptdesign')" >Hello World Report</a></li> <li> <a href="#" onclick="generateReport('books_report.rptdesign')">Books Details Report</a></li> </ul> </fieldset> </div> <fieldset style="background-color: white;"> <legend> <b style="color:#84A9CF">Report Details:</b> </legend> <div id="downloadOptions" align="right"> <div id="paginationDiv"></div> Dwonload Report as: <a href="#" onclick="downloadReport('pdf')" >pdf</a>, <a href="#" onclick="downloadReport('xls')" >xls</a>, <a href="#" onclick="downloadReport('doc')" >doc</a>, </div> <button onclick="getPageCount()">Page count</button> <div id="reportData" style="height: auto; background-color: white;float: left;min-width: 70%;text-align: center;" align="center"> <br> Reports will be loaded here when user selects report from left navigation. </div> </fieldset> </div> </BODY> </HTML>
JS / report.js
/** * This js contains two method * 1)generateReport(reportName) : Requesting to load the report content in div. * 2)downloadReport(format): Downloading the current report in given format. */ //this will hold the currently loaded report name. currentReportName=""; currentPageNumber =1; paginationFlag=false; /** * This method is responsible for loading the reports in the report div. * @param localReportName */ function generateReport(reportName) { // here relative url is given if relative url is not working try giving full url var reporturl ="/BirtDemo/loadReport?ReportName="+reportName+"&ReportFormat=html"+"&pageNumber="+currentPageNumber; $("#reportData").html("Loading...<br><img src='/BirtDemo/images/loading.gif' align='middle' >"); $('#reportData').load(reporturl ,function(response, status, xhr) { if (status == "error") { var msg = "Sorry but there was an error getting details ! "; $("#reportData").html(msg + xhr.status + " " + xhr.statusText); } }); currentReportName=reportName; //once you set pagination skip pagination next time if(currentReportName =="books_report.rptdesign" && paginationFlag==false){ setPagePagination(); paginationFlag=true; } } /** * Download report function * * @param format */ function downloadReport(format){ if(currentReportName==""){ alert("Please Select the report."); return; } //here relative url is given if relative url is not working try giving full url var reporturl ="/BirtDemo/loadReport?ReportName="+currentReportName+"&ReportFormat="+format; window.location.href = reporturl; } function setPagePagination(){ var reporturl ="/BirtDemo/getPageCount"; $.ajax({ type : 'GET',//GET Or POST url : reporturl, cache: false, //get fresh copy of details.html instead of cahced one success: function(response, textStatus, jqXHR){ alert("Total number pagination pages are :"+response); var pageCount = response; var paginationHtml=""; //create pagincation html for(var i=1;i<=pageCount;i++){ paginationHtml = paginationHtml +" <b><a href='#' >"+i+"</a></b>" +" |"; } $("#paginationDiv").html("pagination -->"+paginationHtml); $("#paginationDiv a").click(function(){ alert("---"+$(this).text()+"---"); currentPageNumber =$(this).text(); generateReport(currentReportName); }); } }); }
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