demo-form-export-processor/src/main/java/com/tptj/demo/hg/form/export/processor/Demo.java

package com.tptj.demo.hg.form.export.processor;

import com.fanruan.api.log.LogKit;
import com.fanruan.api.web.FlushKit;
import com.fr.form.main.Form;
import com.fr.form.stable.fun.AbstractFormExportProcessor;
import com.fr.form.ui.BaseChartEditor;
import com.fr.form.ui.ElementCaseEditorProvider;
import com.fr.form.ui.container.WLayout;
import com.fr.intelli.record.Focus;
import com.fr.json.JSONObject;
import com.fr.record.analyzer.EnableMetrics;
import com.fr.report.worksheet.FormElementCase;
import com.fr.stable.EncodeConstants;
import com.fr.web.core.FormSessionIDInfor;
import com.fr.web.core.SessionPoolManager;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.URLEncoder;
import java.util.Map;

/**
 * @author 秃破天际
 * @version 10.0
 * Created by 秃破天际 on 2021-04-08
 **/
@EnableMetrics
public class Demo extends AbstractFormExportProcessor {
    @Override
    @Focus(id = "com.tptj.demo.hg.form.export.processor.v10",text = "form export processor")
    public void dealWithExport(HttpServletRequest req, HttpServletResponse res, String sessionID) {
        PrintWriter writer =null;
        try{
            FormSessionIDInfor info = SessionPoolManager.getSessionIDInfor(sessionID, FormSessionIDInfor.class);
            //决策报表的标题，常用于作为导出的文件名
            String title = info.getWebTitle();
            res.setContentType("application/json");
            res.setHeader("Content-Disposition", "attachment; filename=\""
                    + URLEncoder.encode(title, EncodeConstants.ENCODING_UTF_8)+".json\"");
            //决策报表计算使用的所有参数，常用于处理文件名
            Map<String, Object> parameters = info.getParameterMap4Execute();
            //决策报表的结果，也是导出数据的主体内容
            Form form = info.getForm2Show();
            //要导出的图表
            BaseChartEditor[] charts = form.getAllCharts();
            //整个决策报表的布局,所有的控件/图表/报表块之类的全部在里面
            WLayout container = form.getContainer();
            //要导出的所有报表块
            ElementCaseEditorProvider[] elements = form.getElementCases();
            for( ElementCaseEditorProvider element : elements ){
                //报表块的内容
                FormElementCase elementCase = (FormElementCase) element.getElementCase();
            }
            writer = new PrintWriter(new OutputStreamWriter(res.getOutputStream()));
            writer.print(JSONObject.create()
                    .put("format",parameters.get("format"))
                    .put("sessionID",sessionID)
            );
        }catch(Exception e){
            LogKit.error(e.getMessage(),e);
        }finally {
            if( null != writer ){
                writer.close();
            }
        }
    }
}