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我有一个导出 pdf 文件的 Java Web 应用程序。

我必须使用Crystal Reports 11. 我已经可以导出 pdf，问题是它只能在本地工作，因为该.rpt文件引用了XML我机器中的文件。

所以，当我想导出一个报告并且.rpt文件找不到该文件时，即使我给它一个新的数据集来使用它仍然会抛出一个未找到的异常。我尝试以编程方式更改文件的连接，但它总是抛出与连接相关的异常。

public InputStream export() throws ReportSDKException, IOException, IllegalArgumentException, IllegalAccessException {
        ReportClientDocument reportClientDoc = new ReportClientDocument();
        reportClientDoc.setLocale(Locale.forLanguageTag(localeTag));
        reportClientDoc.open(reportPath, OpenReportOptions._discardSavedData);
        DatabaseController databaseController = reportClientDoc.getDatabaseController();

        IConnectionInfo oldConn = databaseController.getConnectionInfos(null).get(0);
        IConnectionInfo newConn = resolveConnection(reportClientDoc).get(0);

        int replaceParams = DBOptions._ignoreCurrentTableQualifiers | DBOptions._doNotVerifyDB;
        databaseController.replaceConnection(oldConn, newConn, null,replaceParams);

        reportClientDoc.getDatabaseController().setDataSource(this.dataset);
        ParameterFieldController parameterController = reportClientDoc.getDataDefController()
                .getParameterFieldController();
        for (Param<Double> p : doubleParams) {
            parameterController.setCurrentValue(p.subReportName, p.fieldName, p.value);
        }

        for (Param<Object> p : objectParams) {
            parameterController.setCurrentValue(p.subReportName, p.fieldName, p.value);
        }

        return reportClientDoc.getPrintOutputController().export(this.format);
    }

private ConnectionInfos resolveConnection(ReportClientDocument reportClientDoc) throws ReportSDKException {
        IConnectionInfo oldConnection = new ConnectionInfo();
        DatabaseController dbController = reportClientDoc.getDatabaseController();
        oldConnection = dbController.getConnectionInfos(null).getConnectionInfo(0);

        String xsdPath = Paths.get(this.xsdPath).toAbsolutePath().toString();

        final String SERVER_NAME = dummyXmlPath + " " + xsdPath;
        final String DATABASE_DLL = oldConnection.getAttributes().getStringValue("Database DLL");
        final String LOCAL_SCHEMA_FILE = xsdPath;
        final String SERVER_TYPE = "XML";
        final String PREQESERVERNAME = SERVER_NAME;
        final String PREQESERVERTYPE = "XML";
        final String LOCAL_XML_FILE = dummyXmlPath;

        PropertyBag newAttributes = new PropertyBag();
        newAttributes.put("Server Name", SERVER_NAME);
        newAttributes.put("Database DLL", DATABASE_DLL);
        newAttributes.put("Local Schema File", LOCAL_SCHEMA_FILE);
        newAttributes.put("PreQEServerName", PREQESERVERNAME);
        newAttributes.put("PreQEServerType", PREQESERVERTYPE);
        newAttributes.put("Server Type", SERVER_TYPE);
        newAttributes.put("Local XML File", LOCAL_XML_FILE);

        IConnectionInfo newConnection = (IConnectionInfo) oldConnection.clone(true);
        newConnection.setAttributes(newAttributes);
        newConnection.setKind(oldConnection.getKind());

        ConnectionInfos connectionInfos = new ConnectionInfos();
        connectionInfos.add(newConnection);
        return connectionInfos;
    }
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1 回答 1

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我能够通过将子报表数据添加到子报表来解决此问题。

SubreportController subreportController = reportClientDoc.getSubreportController();
for (String string : subreportController.querySubreportNames()) {
    subreportController.setDataSource(string, dataset);
}
于 2019-02-18T17:01:20.730 回答