利用BIRT API生成报表例子1

package cn.net.fone.webbirt; 

import java.io.IOException; 
import java.io.PrintWriter; 
import java.text.DateFormat; 
import java.text.SimpleDateFormat; 
import java.util.ArrayList; 
import java.util.HashMap; 
import java.util.logging.Level; 
import java.util.logging.Logger; 

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

import org.eclipse.birt.report.engine.api.EngineConstants; 
import org.eclipse.birt.report.engine.api.HTMLRenderOption; 
import org.eclipse.birt.report.engine.api.IReportRunnable; 
import org.eclipse.birt.report.engine.api.IRunAndRenderTask; 
import org.eclipse.birt.report.engine.api.IReportEngine; 
import org.eclipse.birt.report.model.api.CellHandle; 
import org.eclipse.birt.report.model.api.DataItemHandle; 
import org.eclipse.birt.report.model.api.ElementFactory; 
import org.eclipse.birt.report.model.api.LabelHandle; 
import org.eclipse.birt.report.model.api.OdaDataSetHandle; 
import org.eclipse.birt.report.model.api.OdaDataSourceHandle; 
import org.eclipse.birt.report.model.api.PropertyHandle; 
import org.eclipse.birt.report.model.api.ReportDesignHandle; 
import org.eclipse.birt.report.model.api.RowHandle; 
import org.eclipse.birt.report.model.api.StructureFactory; 
import org.eclipse.birt.report.model.api.TableHandle; 
import org.eclipse.birt.report.model.api.activity.SemanticException; 
import org.eclipse.birt.report.model.api.elements.structures.ComputedColumn;  
import org.eclipse.birt.report.model.api.olap.CubeHandle; 
import org.eclipse.birt.report.model.api.olap.DimensionHandle; 
import org.eclipse.birt.report.engine.api.HTMLServerImageHandler; 

public class DesignReportServlet extends HttpServlet{ 
    /** 
     *  
     */ 
    private static final long serialVersionUID = 1L; 
    /** 
     * Constructor of the object. 
     */ 
    private IReportEngine birtReportEngine = null; 
    protected static Logger logger = Logger.getLogger( "org.eclipse.birt" ); 

    public DesignReportServlet() { 
        super(); 
    } 

    /** 
     * Destruction of the servlet.  

     */ 
    public void destroy() { 
        super.destroy();  
        BirtEngine.destroyBirtEngine(); 
    } 


    /** 
     * The doGet method of the servlet.  
        select t.count_date,t.cha_user_name,t.type_name,t.city_name from t_yx_pv_count t where t.count_date=to_date('2012-06-26','yyyy-MM-dd'); 
     * 
     */ 
     public void doGet(HttpServletRequest req, HttpServletResponse resp) 
            throws ServletException, IOException { 

        //get report name and launch the engine 
        resp.setContentType("text/html"); 
        //resp.setContentType( "application/pdf" );  
        //resp.setHeader ("Content-Disposition","inline; filename=test.pdf");         
        //String reportName = req.getParameter("__report"); 
        String[] cols = (String[])req.getParameterMap().get("dyna1"); 
        ServletContext sc = req.getSession().getServletContext(); 
        this.birtReportEngine = BirtEngine.getBirtEngine(sc); 

        IReportRunnable design; 
        try 
        { 
            //Open report design 
            design = birtReportEngine.openReportDesign(sc.getRealPath("/Reports")+"/"+"designReport.rpttemplate"); 
             ReportDesignHandle report = (ReportDesignHandle) design.getDesignHandle( );  
            buildReport( cols,  report ); 

            //create task to run and render report 
            IRunAndRenderTask task = birtReportEngine.createRunAndRenderTask( design );     

//            HashMap paramMap1 = new HashMap(); 
//            DateFormat dFormat=new SimpleDateFormat("yyyy-MM-dd"); 
//            Long RP_st = dFormat.parse("2012-06-24").getTime(); 
//            Long RP_et = dFormat.parse("2012-06-25").getTime(); 
//            paramMap1.put("RP_st",new java.sql.Date(RP_st)); 
//            paramMap1.put("RP_et",new java.sql.Date(RP_et)); 
//            paramMap1.put("cid","402880c73726bdb9013759864237000b"); 
//            paramMap1.put("tid", 0); 
//            paramMap1.put("cityids",""); 

            //task.setAppContext( paramMap1 ); 

            //set output options 
                       HTMLRenderOption options = new HTMLRenderOption(); 
                       options.setImageHandler( new HTMLServerImageHandler() ); 
                       options.setImageDirectory( sc.getRealPath("/images")); 
                       options.setBaseImageURL( req.getContextPath() + "/images" ); 
            options.setOutputFormat(HTMLRenderOption.OUTPUT_FORMAT_HTML); 
             //options.setOutputFormat(HTMLRenderOption.OUTPUT_FORMAT_PDF); 
            options.setOutputStream(resp.getOutputStream()); 
            task.setRenderOption(options); 

            //run report 
            task.run(); 
            task.close(); 
        }catch (Exception e){ 

             e.printStackTrace(); 
             throw new ServletException( e ); 
        } 
    } 

    public void buildReport(String[]  cols, ReportDesignHandle designHandle){ 


        try{ 
        ElementFactory designFactory = designHandle.getElementFactory( ); 

        buildDataSource(designFactory, designHandle); 


        //ArrayList cols = new ArrayList(); 
        //cols.add("OFFICECODE"); 
        //cols.add("CITY"); 
        //cols.add("COUNTRY"); 

        buildDataSet(cols, "FROM T_YX_PV_COUNT", designFactory, designHandle); 

        TableHandle table = designFactory.newTableItem( "table", cols.length ); 
        table.setWidth( "100%" ); 
        table.setDataSet( designHandle.findDataSet( "ds" ) ); 

        CubeHandle cubeHandle=designFactory.newOdaCube("cube"); 
        DimensionHandle dimensionHandle = cubeHandle.getDimension("dddd"); 
        //cubeHandle. 
        //dimensionHandle. 

        PropertyHandle computedSet = table.getColumnBindings( );  
        ComputedColumn  cs1 = null; 

        for( int i=0; i < cols.length; i++){ 
             cs1 = StructureFactory.createComputedColumn(); 
            cs1.setName((String)cols); 
            cs1.setExpression("dataSetRow[\"" + (String)cols + "\"]"); 
            computedSet.addItem(cs1); 
        } 


        // table header 
        RowHandle tableheader = (RowHandle) table.getHeader( ).get( 0 ); 


        for( int i=0; i < cols.length; i++){ 
            LabelHandle label1 = designFactory.newLabel( (String)cols );     
            label1.setText((String)cols); 
            CellHandle cell = (CellHandle) tableheader.getCells( ).get( i ); 
            cell.getContent( ).add( label1 ); 
        }                             

        // table detail 
        RowHandle tabledetail = (RowHandle) table.getDetail( ).get( 0 ); 
        for( int i=0; i < cols.length; i++){ 
            CellHandle cell = (CellHandle) tabledetail.getCells( ).get( i ); 
            DataItemHandle data = designFactory.newDataItem( "data_"+(String)cols ); 
            data.setResultSetColumn( (String)cols); 
            cell.getContent( ).add( data ); 
        } 



        designHandle.getBody( ).add( table ); 
        }catch(Exception e){ 
            e.printStackTrace(); 
        } 

    } 

    void buildDataSource( ElementFactory designFactory, ReportDesignHandle designHandle ) throws SemanticException 
    { 

        OdaDataSourceHandle dsHandle = designFactory.newOdaDataSource( 
                "Data Source", "org.eclipse.birt.report.data.oda.jdbc" ); 
        dsHandle.setProperty( "odaDriverClass","oracle.jdbc.driver.OracleDriver" ); 
        dsHandle.setProperty( "odaURL", "" ); 
        dsHandle.setProperty( "odaUser", "" ); 
        dsHandle.setProperty( "odaPassword", "" ); 

        designHandle.getDataSources( ).add( dsHandle ); 

    } 
    /* 
     * select t.count_date,t.cha_user_name,t.type_name,t.city_name from t_yx_pv_count t where t.count_date=to_date('2012-06-26','yyyy-MM-dd'); 
     * */ 
    void buildDataSet(String[] cols, String fromClause, ElementFactory designFactory, ReportDesignHandle designHandle ) throws SemanticException 
    { 

        OdaDataSetHandle dsHandle = designFactory.newOdaDataSet( "ds", 
        "org.eclipse.birt.report.data.oda.jdbc.JdbcSelectDataSet" ); 
        dsHandle.setDataSource( "Data Source" ); 
        String qry = "select "; 
        for( int i=0; i < cols.length; i++){ 
            qry += " " + cols; 
            if( i != (cols.length -1) ){ 
                qry += ","; 
            } 

        } 
        qry += " " + fromClause + " where COUNT_DATE=to_date('2012-06-26','yyyy-MM-dd')"; 

        dsHandle.setQueryText( qry ); 

         designHandle.getDataSets( ).add( dsHandle ); 
    }      
     /** 
      * The doPost method of the servlet.  

      * 
      */ 
     public void doPost(HttpServletRequest request, HttpServletResponse response) 
             throws ServletException, IOException { 

        response.setContentType("text/html"); 
        PrintWriter out = response.getWriter(); 
        out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">"); 
        out.println("<HTML>"); 
        out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>"); 
        out.println("  <BODY>"); 
        out.println(" Post Not Supported"); 
        out.println("  </BODY>"); 
        out.println("</HTML>"); 
        out.flush(); 
        out.close(); 
    } 

    /** 
     * Initialization of the servlet.  

     * 
     * @throws ServletException if an error occure 
     */ 
     public void init() throws ServletException { 
        BirtEngine.initBirtConfig(); 

    } 
}