关于freemark将数据导入Excel步骤

r囧r小猫 2021-09-13 16:48 445阅读 0赞

## 关于freemark将数据导入Excel ##

**1.在Excel中生成你需要的格式，样式，颜色  
如图：然后$\{实体类的缩写.属性名\}**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N1bnJqX25pdQ_size_16_color_FFFFFF_t_70]  
**2.另存为.xml文件**![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N1bnJqX25pdQ_size_16_color_FFFFFF_t_70 1]  
**3.将生成的excel-template.xml文件放到你的项目中**  
resource文件夹下建一个template  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N1bnJqX25pdQ_size_16_color_FFFFFF_t_70 2]  
**4.工具类：**

@RequestMapping("downloadExcel3")
        public void downloadExcel3(HttpServletResponse response)  {
        //获取数据
            List list = clothingService.queryAllListNoPage();
            Map map = new HashMap();
            //把数据存放到Map中，并将所有的信息都存到map中例如：autor等够可以进行显示
            map.put("clothingList", list);
            //map.put("productList", list);
            Configuration configuration = new Configuration();
            //configuration.setDefaultEncoding("utf-8");
            //有两种方式获取你的模板，模板在项目中时用第一个，模板在本地时用第二个。
            //注意：两种方式的路径都只需要写到模板的上一级目录
            configuration.setClassForTemplateLoading(this.getClass(), "/template");
            //  configuration.setDirectoryForTemplateLoading(new File("C:/"));
            //File outFile = new File("D:/outFile/"+Math.random()*10000+".xls");//输出路径
            response.setContentType("application/octet-stream");
            response.setHeader("Content-disposition", "attachment;filename=" + UUID.randomUUID().toString() + ".xlsx");
            Template t = null;
            OutputStream out = null;
            OutputStreamWriter writer = null;
            try {
                t = configuration.getTemplate("excel-template.xml", "utf-8"); //文件名，你生成的excel-template.xml模板的名字，必须一样
                out = response.getOutputStream();
                writer = new OutputStreamWriter(out, "utf-8");
                t.process(map, writer);
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    if (out != null) {
                        out.close();
                    }
                    if (writer != null) {
                        writer.close();
                    }
    
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
    
    
        }

**5.编辑excel-template.xml文件**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N1bnJqX25pdQ_size_16_color_FFFFFF_t_70 3]  
然后就可以了  
执行就可以了

目前对于日期还有空的数据导入还存在问题，后续会补上

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N1bnJqX25pdQ_size_16_color_FFFFFF_t_70]: /images/20210913/a959aa4b70cd4b7ca174a71c82f29332.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N1bnJqX25pdQ_size_16_color_FFFFFF_t_70 1]: /images/20210913/942fa2624c964e3c9efd5d1b6c1b737b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N1bnJqX25pdQ_size_16_color_FFFFFF_t_70 2]: /images/20210913/80576c723faa410c9d239a6e0d4f1871.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N1bnJqX25pdQ_size_16_color_FFFFFF_t_70 3]: /images/20210913/d6855ef39b784fbb939ff05921e7716f.png