• 使用 jxl 实现复杂的excel 表格导出 java代码


    1. 使用 jxl 插件 jxl.jar

    2. 导出excel 表格

    3. java

    4.myeclipse

    5.mysql

    6.ssm

    7. 导出的效果

    图中红色部分为从数据库中获取的动态数据。

    8. 这是我们公司的项目,所以后台代码中我只粘贴出 excel 代码。如果不懂得可以联系我。

    QQ:905352007

    9. excel 代码段

    public void exportCourseContent(HttpServletRequest request,HttpServletResponse response, List<Outline> list,
    			String course_name) {
    		WritableWorkbook wwb = null;
            OutputStream os = null;
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
            try {
                os = response.getOutputStream();// 取得输出流
                response.reset();// 清空输出流
                // excel 文件的 MIME 类型
                response.setContentType("application/msexcel");
                //在导出前对名称根据浏览器做下处理
                String agent = request.getHeader("USER-AGENT").toLowerCase();
                response.setContentType("application/vnd.ms-excel");
                //***************很重要
                String fileName = course_name;//文件名中文乱码
                String codedFileName = java.net.URLEncoder.encode(fileName, "UTF-8");
                if (agent.contains("firefox")) {
                    response.setCharacterEncoding("utf-8");
                    response.setHeader("content-disposition", "attachment;filename=" + new String(fileName.getBytes(), "ISO8859-1") + ".xls");
                } else {
                    response.setHeader("content-disposition", "attachment;filename=" + codedFileName + ".xls");
                }
    
                wwb = jxl.Workbook.createWorkbook(os);
                WritableSheet ws = wwb.createSheet("课程统计", 10); // 创建一个工作表
    
                // 设置标题单元格的文字格式
                WritableFont titleFont = new WritableFont(WritableFont.createFont("宋体"), 12,
                		WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat titleFontFormat = new WritableCellFormat(titleFont);
                titleFontFormat.setVerticalAlignment(VerticalAlignment.CENTRE);
                titleFontFormat.setAlignment(Alignment.CENTRE);
                titleFontFormat.setBackground(Colour.LIGHT_TURQUOISE);
                
    
                // 设置内容数据单元格的文字格式
                WritableFont cellFont = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat cellFontFormat = new WritableCellFormat(cellFont);
                cellFontFormat.setVerticalAlignment(VerticalAlignment.CENTRE);//垂直居中
                cellFontFormat.setAlignment(Alignment.LEFT);//文字对齐方式
                
                // 设置内容数据单元格的文字格式
                WritableFont cellFont1 = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat cellFontFormat1 = new WritableCellFormat(cellFont1);
                cellFontFormat1.setVerticalAlignment(VerticalAlignment.CENTRE);//垂直居中
                cellFontFormat1.setAlignment(Alignment.CENTRE);//文字对齐方式
    
                ws.getSettings().setDefaultColumnWidth(18);
                ws.getSettings().setDefaultRowHeight(300);
                
                CellView cellView = new CellView();  
                cellView.setAutosize(true); //设置自动大小  
                /*======= 设置列宽 =====*/ 
                ws.setColumnView(0, 30);//根据内容自动设置列宽 
                ws.setColumnView(1, 30);
                ws.setColumnView(2, 30);
                ws.setColumnView(3, 24);
                ws.setColumnView(4, 24);
                ws.setColumnView(5, 24);
               
                //ws.mergeCells(0, 0, 3, 0);//合并单元格 第一个参数从哪个列开始合并,第二个参数为第几行,第三个参数为到那一列结束,第四个参数为合并几行
                /*======= 填充标题 =====*/ 
                ws.addCell(new Label(0, 0, "章名", titleFontFormat));  // 第一个参数为: 第几列,第二个参数为: 第几行
                ws.addCell(new Label(1, 0, "节名", titleFontFormat));
                ws.addCell(new Label(2, 0, "单元名", titleFontFormat));
                ws.addCell(new Label(3, 0, "单元序号", titleFontFormat));
                ws.addCell(new Label(4, 0, "单元类型", titleFontFormat));
                ws.addCell(new Label(5, 0, "视频时长", titleFontFormat));
                
                /*======= 填充内容 =====*/ 
                /** 循环章 */
                Outline outline = null;
                Outline childoutline = null;
                CourseContent content = null;
                List<Outline> childlist = null;
                List<CourseContent> contentlist = null;
                String dan="";
                int oc_count = 0;
                int occ_count = 0;
                int content_count = 0;
                int outline_content_count = 0;
                dan="--";
                //循环章
                for (int i = 0; i < list.size(); i++) {
                	outline = list.get(i);
                	childlist = outline.getChild();
                	oc_count = content_count+1;
                	ws.addCell(new Label(0, content_count+1, "" + outline.getTitle(),cellFontFormat));// 章的内容
                    //循环节
                    for(int j = 0; j < childlist.size(); j++){
                    	childoutline = childlist.get(j);
                    	contentlist = childoutline.getContent();
                    	occ_count = outline_content_count+1;
                    	ws.addCell(new Label(1, outline_content_count+1, "" + childoutline.getTitle(),cellFontFormat));
                    	//循环单元
                    	if(contentlist==null||contentlist.size()<=0){
                    		ws.addCell(new Label(2, outline_content_count+1,dan,cellFontFormat));
                    		ws.addCell(new Label(3, outline_content_count+1,dan,cellFontFormat1));
                    		ws.addCell(new Label(4, outline_content_count+1,dan,cellFontFormat1));
                    		ws.addCell(new Label(5, outline_content_count+1,dan,cellFontFormat1));
                    		content_count++;
                    		outline_content_count++;
                    	}else{
                    		for(int k = 0; k < contentlist.size(); k++){
                    			content = contentlist.get(k);
                        		ws.addCell(new Label(2, content_count+1,content.getTitle(),cellFontFormat));
                        		ws.addCell(new Label(3, content_count+1,content.getSort()+"",cellFontFormat1));
                        		if(content.getType()!=null){
                        			if(content.getType()==1){
                        				ws.addCell(new Label(4, content_count+1,"视频",cellFontFormat1));
                        			}else if(content.getType()==2){
                        				ws.addCell(new Label(4, content_count+1,"文档",cellFontFormat1));
                        			}else{
                        				ws.addCell(new Label(4, content_count+1,"其他",cellFontFormat1));
                        			}
                        		}else{
                        			ws.addCell(new Label(4, content_count+1,"暂无",cellFontFormat1));
                        		}
                        		if(content.getVideo_time()!=null){
                        			ws.addCell(new Label(5, content_count+1,content.getVideo_time()+"",cellFontFormat1));
                        		}else{
                        			ws.addCell(new Label(5, content_count+1,0+"",cellFontFormat1));
                        		}
                        		
                        		content_count++;
                        		outline_content_count++;
                        	}
                    	}
                    	//合并节单元格
                    	ws.mergeCells(1, occ_count, 1, outline_content_count);
                    }
                    //合并章单元格
                    ws.mergeCells(0, oc_count, 0, content_count);
                }
                ws.toString();
                wwb.write();
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    if (wwb != null) {
                        wwb.close();
                    }
                    if (os != null) {
                        os.close();
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
    	}
    

      10. 当然了,这只是我想到的一种方法,如果有哪个大神有更简单的方法,欢迎在下方留言!

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  • 原文地址:https://www.cnblogs.com/bb1008/p/9232346.html
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