I am writing a JSF page to get user input, and pass that input to Crystal Report (Crystal Report for Eclipse 2.0). I don't know why the parameterFields cannot load my parameter. Please help me!!!
My First page (rptDemo.xhtml):
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core"> <h:head> <title>Crystal Report Demo</title> </h:head> <h:body> <h1>Crystal Report for Eclipse 2.0 Demo</h1> <h2>Using JSF 2.0 and JSF 1.2 to generate report</h2> <h3>This input/select page use JSF 2.0, result page use JSF 1.2 </h3> <f:view> <h:form> <table border="1"> <tr> <td>No parameter passing to report</td> <td colspan="2"><h:commandButton value="Show report 1" action="#{reportBean.show1}"/> can show report normally</td> </tr> <tr> <td>Passing parameter to report<br/>(cannot pass parameter)</td> <td><h:inputText value="#{reportBean.inputText}"/></td> <td><h:commandButton value="Show report 2" action="#{reportBean.show2}"/></td> </tr> </table> </h:form> </f:view> </h:body> </html> My second page (result page) for "Show Report 1 (rpt1.jsp)", this can run successfully:
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %> <%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %> <%@ taglib uri="http://www.businessobjects.com/jsf/crystalreportsviewers" prefix="bocrv" %> <head><title>View Report 1</title> </head> <body> <f:view> <h:form> <bocrv:reportPageViewer reportSource="#{reportBean.reportSource1}" /> </h:form> </f:view> <body> </html>
My third page (result page) for "Show Report 2 (rpt2.jsp)", this has error, parameterFields seem cannot load parameter:
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %> <%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %> <%@ taglib uri="http://www.businessobjects.com/jsf/crystalreportsviewers" prefix="bocrv" %> <head><title>View Report 2</title> </head> <body> <f:view> <h:form> <bocrv:reportPageViewer reportSource="#{reportBean.reportSource2}" allowParameterPrompting="false" parameterFields="#{reportBean.parameterFields}" /> </h:form> </f:view> <body> </html>
My report bean is:
package crDemo;
import javax.faces.bean.ManagedBean;
import com.crystaldecisions.reports.reportengineinterface.JPEReportSourceFactory;
import com.crystaldecisions.sdk.occa.report.data.Fields;
import com.crystaldecisions.sdk.occa.report.data.ParameterField;
import com.crystaldecisions.sdk.occa.report.data.ParameterFieldDiscreteValue;
import com.crystaldecisions.sdk.occa.report.data.Values;
import com.crystaldecisions.sdk.occa.report.lib.ReportSDKException;
import com.crystaldecisions.sdk.occa.report.reportsource.IReportSourceFactory2;
@ManagedBean
public class ReportBean { private Object reportSource1 = null; private Object reportSource2 = null; private String inputText = ""; private Fields<ParameterField> parameterFields = new Fields<ParameterField>(); public Object getReportSource1() { return reportSource1; } public void setReportSource1(Object reportSource1) { this.reportSource1 = reportSource1; } public Object getReportSource2() { return reportSource2; } public void setReportSource2(Object reportSource2) { this.reportSource2 = reportSource2; } public String getInputText() { return inputText; } public void setInputText(String inputText) { this.inputText = inputText; } public Fields<ParameterField> getParameterFields() { return parameterFields; } public void setParameterFields(Fields<ParameterField> parameterFields) { this.parameterFields = parameterFields; } public String show1() { try { // Instantiate the report object String reportLocation; reportLocation = "rpt/demo1.rpt"; IReportSourceFactory2 rptSrcFactory = new JPEReportSourceFactory(); reportSource1 = rptSrcFactory.createReportSource(reportLocation, java.util.Locale.getDefault() ); } catch (ReportSDKException e) { // TODO Auto-generated catch block e.printStackTrace(); } return "rpt1"; } public String show2() { try { // Instantiate the report object String reportLocation; reportLocation = "rpt/demo2.rpt"; IReportSourceFactory2 rptSrcFactory = new JPEReportSourceFactory(); reportSource2 = rptSrcFactory.createReportSource(reportLocation, java.util.Locale.getDefault() ); // Clear previous parameter parameterFields.clear(); //Create a ParameterField object for each field that you wish to set. ParameterField paramFieldOne = new ParameterField(); //You must set the report name. Set the report name to an empty string if your report does not contain a subreport; otherwise, the report name will be the name of the subreport paramFieldOne.setReportName(""); //Create a Values object and a ParameterFieldDiscreteValue object for each parameter field you wish to set. //If a ranged value is being set, a ParameterFieldRangeValue object should be used instead of the discrete value object. Values valueOne = new Values(); ParameterFieldDiscreteValue paramFieldDVOne = new ParameterFieldDiscreteValue(); //----------- Initialize the parameter fields ---------- //Set the name and value for each parameter field that is added. //Values for parameter fields are represented by a ParameterFieldDiscreteValue or ParameterFieldRangeValue object. System.out.println("Input parameter = " + inputText); paramFieldOne.setName("paramOne"); // "paramOne" is parameter name in my Crystal Report file (demo2.rpt) paramFieldDVOne.setValue(inputText); //Add the parameter field values to the Values collection object. valueOne.add(paramFieldDVOne); //Set the current Values collection for each parameter field. paramFieldOne.setCurrentValues(valueOne); //Add each parameter field to the Fields collection. //The Fields object is now ready to be used with the viewer. parameterFields.add(paramFieldOne); } catch (ReportSDKException e) { // TODO Auto-generated catch block e.printStackTrace(); } return "rpt2"; }
}
Here is runtime result:
![https://public.bay.livefilestore.com/y1pigYkVz4Js_QEKhde3sLBYPuh4V2iGWCboJG3omrD6w5vwl1gOWhiMpfMcPFMzfENu7tLBpK-m1wwWb0mTYv7sg/run.png?psid=1]()
After enter some value, and click "Show report 2"
![https://public.bay.livefilestore.com/y1pHsxtGjMgSla_sZlihB6Y7xB6kOyhcOMSwND5xgin5qV1sGw85K_SBJUFJUGt_OlOm7F2fwZ1FO_qVA25cxpmFA/Missing.png?psid=1]()
