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354 行
12 KiB
354 行
12 KiB
/*******************************************************************************
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* Copyright 2017 Bstek
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy
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* of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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******************************************************************************/
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package com.bstek.ureport.console.html;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.util.Collection;
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import java.util.Enumeration;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.apache.commons.lang.StringUtils;
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import org.apache.velocity.Template;
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import org.apache.velocity.VelocityContext;
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import org.codehaus.jackson.map.ObjectMapper;
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import com.bstek.ureport.build.Context;
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import com.bstek.ureport.build.ReportBuilder;
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import com.bstek.ureport.build.paging.Page;
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import com.bstek.ureport.cache.CacheUtils;
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import com.bstek.ureport.chart.ChartData;
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import com.bstek.ureport.console.MobileUtils;
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import com.bstek.ureport.console.RenderPageServletAction;
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import com.bstek.ureport.console.cache.TempObjectCache;
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import com.bstek.ureport.console.exception.ReportDesignException;
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import com.bstek.ureport.definition.Paper;
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import com.bstek.ureport.definition.ReportDefinition;
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import com.bstek.ureport.definition.searchform.FormPosition;
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import com.bstek.ureport.exception.ReportComputeException;
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import com.bstek.ureport.export.ExportManager;
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import com.bstek.ureport.export.FullPageData;
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import com.bstek.ureport.export.PageBuilder;
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import com.bstek.ureport.export.ReportRender;
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import com.bstek.ureport.export.SinglePageData;
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import com.bstek.ureport.export.html.HtmlProducer;
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import com.bstek.ureport.export.html.HtmlReport;
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import com.bstek.ureport.export.html.SearchFormData;
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import com.bstek.ureport.model.Report;
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/**
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* @author Jacky.gao
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* @since 2017年2月15日
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*/
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public class HtmlPreviewServletAction extends RenderPageServletAction {
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private ExportManager exportManager;
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private ReportBuilder reportBuilder;
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private ReportRender reportRender;
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private HtmlProducer htmlProducer=new HtmlProducer();
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@Override
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public void execute(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
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String method=retriveMethod(req);
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if(method!=null){
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invokeMethod(method, req, resp);
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}else{
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VelocityContext context = new VelocityContext();
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HtmlReport htmlReport=null;
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String errorMsg=null;
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try{
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htmlReport=loadReport(req);
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}catch(Exception ex){
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if(!(ex instanceof ReportDesignException)){
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ex.printStackTrace();
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}
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errorMsg=buildExceptionMessage(ex);
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}
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if(htmlReport==null){
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context.put("content", "<div style='color:red'><strong>报表计算出错,错误信息如下:</strong><br><div style=\"margin:10px\">"+errorMsg+"</div></div>");
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context.put("error", true);
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context.put("searchFormJs", "");
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context.put("downSearchFormHtml", "");
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context.put("upSearchFormHtml", "");
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}else{
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SearchFormData formData=htmlReport.getSearchFormData();
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if(formData!=null){
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context.put("searchFormJs", formData.getJs());
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if(formData.getFormPosition().equals(FormPosition.up)){
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context.put("upSearchFormHtml", formData.getHtml());
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context.put("downSearchFormHtml", "");
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}else{
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context.put("downSearchFormHtml", formData.getHtml());
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context.put("upSearchFormHtml", "");
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}
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}else{
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context.put("searchFormJs", "");
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context.put("downSearchFormHtml", "");
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context.put("upSearchFormHtml", "");
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}
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context.put("content", htmlReport.getContent());
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context.put("style", htmlReport.getStyle());
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context.put("reportAlign", htmlReport.getReportAlign());
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context.put("totalPage", htmlReport.getTotalPage());
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context.put("pageIndex", htmlReport.getPageIndex());
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context.put("chartDatas", convertJson(htmlReport.getChartDatas()));
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context.put("error", false);
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context.put("file", req.getParameter("_u"));
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context.put("intervalRefreshValue",htmlReport.getHtmlIntervalRefreshValue());
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String customParameters=buildCustomParameters(req);
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context.put("customParameters", customParameters);
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context.put("_t", "");
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Tools tools=null;
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if(MobileUtils.isMobile(req)){
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tools=new Tools(false);
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tools.setShow(false);
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}else{
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String toolsInfo=req.getParameter("_t");
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if(StringUtils.isNotBlank(toolsInfo)){
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tools=new Tools(false);
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if(toolsInfo.equals("0")){
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tools.setShow(false);
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}else{
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String[] infos=toolsInfo.split(",");
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for(String name:infos){
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tools.doInit(name);
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}
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}
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context.put("_t", toolsInfo);
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context.put("hasTools", true);
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}else{
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tools=new Tools(true);
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}
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}
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context.put("tools", tools);
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}
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context.put("contextPath", req.getContextPath());
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resp.setContentType("text/html");
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resp.setCharacterEncoding("utf-8");
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Template template=ve.getTemplate("ureport-html/html-preview.html","utf-8");
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PrintWriter writer=resp.getWriter();
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template.merge(context, writer);
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writer.close();
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}
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}
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private String convertJson(Collection<ChartData> data){
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if(data==null || data.size()==0){
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return "";
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}
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ObjectMapper mapper=new ObjectMapper();
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try {
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String json = mapper.writeValueAsString(data);
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return json;
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} catch (Exception e) {
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throw new ReportComputeException(e);
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}
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}
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public void loadData(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
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HtmlReport htmlReport=loadReport(req);
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writeObjectToJson(resp, htmlReport);
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}
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public void loadPrintPages(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
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String file=req.getParameter("_u");
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file=decode(file);
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if(StringUtils.isBlank(file)){
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throw new ReportComputeException("Report file can not be null.");
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}
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Map<String, Object> parameters = buildParameters(req);
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String fullName=file+parameters.toString();
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Report report=CacheUtils.getReport(fullName);
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if(report==null){
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ReportDefinition reportDefinition=null;
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if(fullName.equals(PREVIEW_KEY)){
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reportDefinition=(ReportDefinition)TempObjectCache.getObject(PREVIEW_KEY);
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if(reportDefinition==null){
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throw new ReportDesignException("Report data has expired,can not do export excel.");
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}
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}else{
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reportDefinition=reportRender.getReportDefinition(file);
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}
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report=reportBuilder.buildReport(reportDefinition, parameters);
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}
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FullPageData pageData=PageBuilder.buildFullPageData(report);
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StringBuilder sb=new StringBuilder();
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List<List<Page>> list=pageData.getPageList();
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Context context=report.getContext();
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if(list.size()>0){
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for(int i=0;i<list.size();i++){
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List<Page> columnPages=list.get(i);
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if(i==0){
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String html=htmlProducer.produce(context,columnPages,pageData.getColumnMargin(),false);
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sb.append(html);
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}else{
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String html=htmlProducer.produce(context,columnPages,pageData.getColumnMargin(),false);
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sb.append(html);
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}
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}
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}else{
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List<Page> pages=report.getPages();
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for(int i=0;i<pages.size();i++){
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Page page=pages.get(i);
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if(i==0){
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String html=htmlProducer.produce(context,page, false);
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sb.append(html);
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}else{
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String html=htmlProducer.produce(context,page, true);
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sb.append(html);
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}
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}
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}
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Map<String,String> map=new HashMap<String,String>();
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map.put("html", sb.toString());
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writeObjectToJson(resp, map);
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}
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public void loadPagePaper(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
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String file=req.getParameter("_u");
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file=decode(file);
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if(StringUtils.isBlank(file)){
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throw new ReportComputeException("Report file can not be null.");
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}
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ReportDefinition report=null;
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if(file.equals(PREVIEW_KEY)){
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report=(ReportDefinition)TempObjectCache.getObject(PREVIEW_KEY);
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if(report==null){
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throw new ReportDesignException("Report data has expired.");
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}
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}else{
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report=reportRender.getReportDefinition(file);
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}
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Paper paper=report.getPaper();
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writeObjectToJson(resp, paper);
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}
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private HtmlReport loadReport(HttpServletRequest req) {
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Map<String, Object> parameters = buildParameters(req);
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HtmlReport htmlReport=null;
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String file=req.getParameter("_u");
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file=decode(file);
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String fullName=file+parameters.toString();
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String pageIndex=req.getParameter("_i");
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String reload=req.getParameter("_r");
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if(StringUtils.isBlank(file)){
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throw new ReportComputeException("Report file can not be null.");
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}
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if(file.equals(PREVIEW_KEY)){
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Report report=null;
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if(StringUtils.isNotBlank(pageIndex) && StringUtils.isBlank(reload)){
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report=CacheUtils.getReport(fullName);
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}
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ReportDefinition reportDefinition=(ReportDefinition)TempObjectCache.getObject(PREVIEW_KEY);
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if(report==null){
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if(reportDefinition==null){
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throw new ReportDesignException("Report data has expired,can not do preview.");
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}
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report=reportBuilder.buildReport(reportDefinition, parameters);
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CacheUtils.storeReport(fullName, report);
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}
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htmlReport=new HtmlReport();
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String html=null;
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if(StringUtils.isNotBlank(pageIndex)){
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Context context=report.getContext();
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int index=Integer.valueOf(pageIndex);
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SinglePageData pageData=PageBuilder.buildSinglePageData(index, report);
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List<Page> pages=pageData.getPages();
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if(pages.size()==1){
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Page page=pages.get(0);
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html=htmlProducer.produce(context,page,false);
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}else{
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html=htmlProducer.produce(context,pages,pageData.getColumnMargin(),false);
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}
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htmlReport.setTotalPage(pageData.getTotalPages());
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htmlReport.setPageIndex(index);
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}else{
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html=htmlProducer.produce(report);
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}
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htmlReport.setChartDatas(report.getContext().getChartDataMap().values());
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htmlReport.setContent(html);
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htmlReport.setTotalPage(report.getPages().size());
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htmlReport.setStyle(reportDefinition.getStyle());
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htmlReport.setSearchFormData(reportDefinition.buildSearchFormData());
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htmlReport.setReportAlign(report.getPaper().getHtmlReportAlign().name());
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htmlReport.setHtmlIntervalRefreshValue(report.getPaper().getHtmlIntervalRefreshValue());
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}else{
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if(StringUtils.isNotBlank(pageIndex)){
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int index=Integer.valueOf(pageIndex);
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htmlReport=exportManager.exportHtml(file,req.getContextPath(),parameters,index);
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}else{
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htmlReport=exportManager.exportHtml(file,req.getContextPath(),parameters);
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}
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}
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return htmlReport;
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}
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private String buildCustomParameters(HttpServletRequest req){
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StringBuilder sb=new StringBuilder();
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Enumeration<?> enumeration=req.getParameterNames();
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while(enumeration.hasMoreElements()){
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Object obj=enumeration.nextElement();
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if(obj==null){
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continue;
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}
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String name=obj.toString();
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String value=req.getParameter(name);
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if(name==null || value==null || (name.startsWith("_") && !name.equals("_n"))){
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continue;
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}
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if(sb.length()>0){
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sb.append("&");
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}
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sb.append(name);
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sb.append("=");
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sb.append(value);
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}
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return sb.toString();
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}
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private String buildExceptionMessage(Throwable throwable){
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Throwable root=buildRootException(throwable);
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StringWriter sw=new StringWriter();
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PrintWriter pw=new PrintWriter(sw);
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root.printStackTrace(pw);
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String trace=sw.getBuffer().toString();
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trace=trace.replaceAll("\n", "<br>");
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pw.close();
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return trace;
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}
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public void setExportManager(ExportManager exportManager) {
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this.exportManager = exportManager;
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}
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public void setReportBuilder(ReportBuilder reportBuilder) {
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this.reportBuilder = reportBuilder;
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}
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public void setReportRender(ReportRender reportRender) {
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this.reportRender = reportRender;
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}
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@Override
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public String url() {
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return "/preview";
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}
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}
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