批量导入（单文件的文件上传 + 解析上传的csv文件 ，导入至数据库 ，反馈信息）

freemaker 部分
<form action="${base}/lot/save" method="post" enctype="multipart/form-data" > 
<input type="file" name="file" class="button input-file" id="file" /> 
<div class="form-button"><br/>
<button id="submit_edit2" class="button bg-main">批量导入</button>
</div>
</form> 
<br/>
<h1>导入信息反馈 :</h1>
<br/>
<#list mess! as x>

${x!}
<br/>
</#list>

 

    @RequestMapping(value = { "/leadin/lot/save" })
    public String lotSave(@RequestParam(value = "file", required = false) MultipartFile file, RedirectAttributesModelMap model,
            HttpSession httpsession, HttpServletRequest request) {
        List<String> list = new ArrayList<String>();
        YellowpagesitemDO yellowpagesitemDO = null;
        String path = request.getSession().getServletContext().getRealPath("upload");
        // String fileName = file.getOriginalFilename();
        String fileName = new Date().getTime() + ".csv";
        File targetFile = new File(path, fileName);
        if (!targetFile.exists()) {
            targetFile.mkdirs();
        }

        try {
            file.transferTo(targetFile);
        } catch (Exception e) {
            e.printStackTrace();
        }
        // 解析上传的 xlsx 文件 并导入 mysql 数据库中
        // 解析 csv 格式文件并保存到mysql 数据库
        String filePath = path + "\\" + fileName;
        System.out.println(filePath);
        BufferedReader bufferedReader = null;
        try {
            
            bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(filePath)));
            String line = null;
            int j=0;
            try {
                while ((line = bufferedReader.readLine()) != null) {
                    j=j+1;
                    String[] columns = line.split(",");
                    String t="";
                    if(columns.length<6){
                        for(int i=0;i<columns.length;i++){
                              t= t+columns[i]+",";
                       
                        }
                        list.add(t + " 格式不对或不能含有换行符，导入失败！");
                    }else{
                        String shen = columns[0]; //获取 shen 
                   
                   
                    yellowpagesitemDO = new YellowpagesitemDO();
                    yellowpagesitemDO.setShen(shen);
                   
                    YellowpagesitemDO yCourt = yellowPage01Service.getCourt(yellowpagesitemDO);
                    if (yCourt == null) {
                        // 法院不存在 查区域id

                        YellowpagesitemDO yAreaId = yellowPage01Service.getAreaId(yellowpagesitemDO);
                        String areaId = yAreaId.getAreaId();
                        yellowpagesitemDO.setAreaId(areaId);
                        System.out.println("+++"+areaId);
                        // 根据区域id 插入法院
                        OperatorDO opDo = (OperatorDO) httpsession.getAttribute(Constant.SESSION_USER_KEY);// 获取当前用户
                        yellowpagesitemDO.setUpdUser(opDo.getName());// 获取并且设置当前用户name
                        yellowPage01Service.insertCourt(yellowpagesitemDO);
                        System.out.println(yellowpagesitemDO.getCourt() + "   法院插入成功");
                        // 再查法院 获取 它的 id 为 courtId
                        yCourt = yellowPage01Service.getCourt(yellowpagesitemDO);
                    }
                    int courtId = yCourt.getCourtId();
                    System.out.println("法院id已找到, 准备插入 项目名称 和值" + courtId);
                    yellowpagesitemDO.setCourtId(courtId);
                    OperatorDO opDo = (OperatorDO) httpsession.getAttribute(Constant.SESSION_USER_KEY);// 获取当前用户
                    yellowpagesitemDO.setUserId(Integer.parseInt(opDo.getRoleId()));// 获取并且设置当前用户id
                    yellowPage01Service.insertItem(yellowpagesitemDO);
                    System.out.println(shen + "," + shi + "," + qu + "," + court + "," + name + "," + value + "导入成功");
                    list.add(shen + "," + shi + "," + qu + "," + court + "," + name + "," + value + "  导入成功");
                }}
            } catch (IOException e) {
            }

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            try {
                bufferedReader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        model.addFlashAttribute("mess", list);
        model.addFlashAttribute(Constant.MESSAGE, " 操作成功。");
        return "redirect:";

    }