crystal report 2008 使用的问题

[Former Member]

刚刚接触crystal report，在2008试用版上测试开发的时候，在sap社区下的例子：

<%@ page import="com.crystaldecisions.report.web.viewer.CrystalReportViewer,

com.crystaldecisions.sdk.occa.report.application.OpenReportOptions,

com.crystaldecisions.sdk.occa.report.application.ReportClientDocument"

%><%

String reportPath;

Object reportSource;

ReportClientDocument reportClientDocument;

reportPath = request.getParameter("report_path");

reportClientDocument = new ReportClientDocument();

reportClientDocument.setReportAppServer(ReportClientDocument.inprocConnectionString);

reportClientDocument.open(reportPath, OpenReportOptions._openAsReadOnly);

reportSource = reportClientDocument.getReportSource();

session.setAttribute("ReportSource", reportSource);

reportClientDocument.close();

response.sendRedirect("viewer_frame.html");

%>

但是在本地编译的时候，老是报错

org.apache.jasper.JasperException: Unable to compile class for JSP

An error occurred at line: 4 in the jsp file: /Java_CRJ12_Web_View/java_crj12_web_view.jsp

Generated servlet error:

D:\Tomcat 5.0\org\apache\jsp\Java_005fCRJ12_005fWeb_005fView\java_005fcrj12_005fweb_005fview_jsp.java:71: cannot resolve symbol

symbol : variable inprocConnectionString

location: class com.crystaldecisions.sdk.occa.report.application.ReportClientDocument

reportClientDocument.setReportAppServer(ReportClientDocument.inprocConnectionString);

^

1 error

类com.crystaldecisions.sdk.occa.report.application.ReportClientDocument所在的jar包rasapp.jar已经引入

[sunny_zhang]

gytest,你有用到RAS服务器吗？

如果没用到，可以直接调用CR Java SDK,不用RAS SDK。

String report = "/reports/sample.rpt";

ReportClientDocument reportClientDoc = new ReportClientDocument();

reportClientDoc.open(report, 0);

Object reportSource = reportClientDoc.getReportSource();

session.setAttribute("reportSource", reportSource);

我没有在API里找到ReportClientDocument.inprocConnectionString 这个String，你的程序报编译错误有可能确实在SDK包里找不到这个这个参数。

如果用到了RAS服务器，且你的report是unmanaged report的话，就调用unmanaged RAS SDK,如下：

// Modify this path to the location of the report on your system.用
代替下面path中的\

String path = "C:\Program Files\Business Objects\BusinessObjects Enterprise 12.0\Samples\en\Reports\DemonstrationWorld Sales Report.rpt";

// Create a new Report Application Session.

ReportAppSession ra = new ReportAppSession();

// Create a RAS service.

ra.createService("com.crystaldecisions.sdk.occa.report.application.ReportClientDocument");

// Set the RAS server to be used for the service.

ra.setReportAppServer("localhost");

// Initialize RAS.

ra.initialize();

// Create the ReportClientDocument object.

ReportClientDocument clientDoc = new ReportClientDocument();

// Set the RAS server to be used.

clientDoc.setReportAppServer(ra.getReportAppServer() );

// Open the report, and set the open type to Read Only.

clientDoc.open(path, OpenReportOptions._openAsReadOnly);

另外，RAS SDK的话，至少需要引入这些包：

rasapp.jar

rascore.jar

serialization.jar

//log4j.jar

//logging.jar