如何使用business objects java sdk更新crystal report的数据库配置

import com.crystaldecisions.sdk.occa.report.application.ReportClientDocument;
import com.crystaldecisions.sdk.occa.report.data.ConnectionInfo;
import com.crystaldecisions.sdk.occa.report.data.ConnectionInfos;
import com.crystaldecisions.sdk.occa.report.data.Fields;
import com.crystaldecisions.sdk.occa.report.data.IConnectionInfo;
import com.crystaldecisions.sdk.occa.report.data.ITable;
import com.crystaldecisions.sdk.occa.report.data.Tables;
import com.crystaldecisions.sdk.occa.report.lib.ReportSDKException;

public class UpdateCrystalReportDatabaseConfig {
    public static void main(String[] args) {
        try {
            // 创建ReportClientDocument对象
            ReportClientDocument reportClientDoc = new ReportClientDocument();

            // 打开报表文档
            reportClientDoc.open("path_to_report.rpt", 0);

            // 获取数据库连接信息
            ConnectionInfos connectionInfos = reportClientDoc.getDatabaseController().getConnectionInfos();
            IConnectionInfo connectionInfo = connectionInfos.getConnectionInfo(0);

            // 更新数据库配置
            connectionInfo.setUserName("new_username");
            connectionInfo.setPassword("new_password");
            connectionInfo.setServerName("new_server_name");
            connectionInfo.setDatabaseName("new_database_name");

            // 保存并关闭报表文档
            reportClientDoc.save();
            reportClientDoc.close();
        } catch (ReportSDKException e) {
            e.printStackTrace();
        }
    }
}