package com.fr.report.fun;

import com.fr.io.collection.ExportCollection;
import com.fr.stable.fun.mark.Immutable;
import com.fr.web.core.ReportSessionIDInfor;
import com.fr.web.core.TemplateSessionIDInfo;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 自定义导出接口
 */
public interface ExportExtensionProcessor extends Immutable{

    String MARK_TAG = "ExportExtensionProcessor";

    int CURRENT_LEVEL = 1;


    /**
     * 导出后的文件名
     * @param req HTTP请求
     * @param sessionIDInfor 报表的会话信息
     * @return 文件名
     */
    String fileName(HttpServletRequest req, TemplateSessionIDInfo sessionIDInfor) throws Exception;

    /**
     * 导出所需要的集合
     * @param req HTTP请求
     * @param res HTTP响应
     * @param sessionIDInfor 报表的会话信息
     * @param format 导出格式
     * @param fileName 导出的文件名
     * @param isEmbed 是否是内置导出
     * @return 导出操作集合
     * @throws Exception 如果导出过程中出现异常则抛出此异常
     */
    ExportCollection createCollection(HttpServletRequest req, HttpServletResponse res,
                                      ReportSessionIDInfor sessionIDInfor, String format,
                                      String fileName, boolean isEmbed) throws Exception;
}

package com.fr.web.core.reserve;

import com.fr.data.NetworkHelper;
import com.fr.general.web.ParameterConstants;
import com.fr.io.collection.ExportCollection;
import com.fr.report.fun.impl.AbstractExportExtension;
import com.fr.web.Browser;
import com.fr.web.core.ReportSessionIDInfor;
import com.fr.web.core.TemplateSessionIDInfo;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Created by richie on 15/11/30.
 */
public class DefaultExportExtension extends AbstractExportExtension {

    public String fileName(HttpServletRequest req, TemplateSessionIDInfo sessionIDInfor) throws Exception {
        // carl:允许改名,没有就用报表名
        String fileName = NetworkHelper.getHTTPRequestFileNameParameter(req);

        //barry:op=fs程序报表用到
        if (fileName == null) {
            fileName = (String) sessionIDInfor.getParameterValue(ParameterConstants.__FILENAME__);
        }
        if (fileName == null) {
            //p:需要先获得导出报表的名字.
            fileName = sessionIDInfor.getWebTitle().replaceAll("\\s", "_");
            //shoc 导出文件名不能含有逗号 否则抛错
            fileName = fileName.replaceAll(",", "_");
        }

        Browser browser = Browser.resolve(req);

        fileName = browser.getEncodedFileName4Download(fileName);
        return fileName;
    }

    public ExportCollection createCollection(HttpServletRequest req, HttpServletResponse res,
                                                   ReportSessionIDInfor sessionIDInfor, String format,
                                                   String fileName, boolean isEmbed) throws Exception {
        Operate operate = ExportFactory.getOperate(format.toLowerCase());
        if (operate != null) {
            operate.setContent(req, res, sessionIDInfor, fileName, isEmbed);
            return operate.newExportCollection(req, res, sessionIDInfor, fileName);
        }
        return ExportCollection.create();
    }
}

<extra-report>
        <ExportExtensionProcessor class="your class name"/>
</extra-report>