需求:
SpringBoot搭建项目实现文件的上传,对文件字段进行校验,将校验后的数据用对象封装,调用dao接口进行批量update *** 作,结果保存到MySQL数据库。对有格式有错误的数据进行统计并反馈到前端页面。
关于实现批量update *** 作,见(https://blog.csdn.net/m0_52850461/article/details/121504680?spm=1001.2014.3001.5501)
思路:
后端使用MultipartFile 接收文件,
使用EasyExcel组件完成Excel文件的处理,
在service目录创建一个监听器来监控字段,并进行校验。
实现:
准备表格:
pom文件:
com.alibaba easyexcel2.1.6
实体类:
@Data @AllArgsConstructor public class CustomNetworkbaseSupplyInfo { @ExcelProperty("DNN") private String dnnName; @ExcelProperty("用户名称") private String cusName; @ExcelProperty("基站IP(多个以英文逗号相隔)") private String basestationIp; }
Controller层:
@PostMapping("importInfo") @ApiOperation(value = "批量导入信息", httpMethod = "POST") public ReturnJson importCustomNetworkInfo(@ApiParam(name = "file", value = "要导入的文件") MultipartFile file,) throws IOException { ExcelimportResult result = customNetworkSupplyInfoService.importCustomNetworkInfo(file); return new ReturnJson(result); }
service层:
@Override public ExcelimportResult importCustomNetworkInfo(MultipartFile file) throws IOException { //保存导出来的信息 Listlists = new ArrayList<>(); //记录错误的信息 StringBuffer errorMessage = new StringBuffer(); //记录 *** 作的结果,初始化为false String result = "false"; //创建监听器 CustomNetworkSupplyListener listener = new CustomNetworkSupplyListener(lists, errorMessage); EasyExcel.read(file.getInputStream(), CustomNetworkbaseSupplyInfo.class, listener).sheet().doRead(); //判断Excel信息是否有错误 if (!StringUtils.isEmpty(errorMessage.toString())) { result = "success"; //调用接口存到数据库 supplyInfoMapper.importCustomNetworkInfo(lists, updateName); } return new ExcelimportResult(result, errorMessage.toString()); }
监听器:
public class CustomNetworkSupplyListener extends AnalysisEventListener{ //保存导出来的信息 private List lists; //记录错误的信息 private StringBuffer errorMessage; public CustomNetworkSupplyListener(List lists, StringBuffer errorMessage) { this.lists = lists; this.errorMessage = errorMessage; } @Override public void invoke(CustomNetworkbaseSupplyInfo customNetworkbaseSupplyInfo, AnalysisContext analysisContext) { //格式检查 StringBuffer errorInfo = validInfo(customNetworkbaseSupplyInfo); //获取当前Excel行号 ReadRowHolder readRowHolder = analysisContext.readRowHolder(); Integer index = readRowHolder.getRowIndex() + 1; //判断当前行号的数据是否有数据错误 if (StringUtils.isNotEmpty(errorInfo)) { errorMessage.append("第" + index + "行填写有误:" + errorInfo + "n"); } else { lists.add(customNetworkbaseSupplyInfo); } } @Override public void doAfterAllAnalysed(AnalysisContext analysisContext) { } public StringBuffer validInfo(CustomNetworkbaseSupplyInfo supplyInfo) { //记录单个error StringBuffer errorInfo = new StringBuffer(); //dnn非空 String dnnName = supplyInfo.getDnnName(); if (StringUtils.isEmpty(dnnName)) { errorInfo.append("DNN的值不能为空;"); } //cusName非空 String cusName = supplyInfo.getCusName(); if (StringUtils.isEmpty(cusName)) { errorInfo.append("用户名称的值不能为空;"); } //多个以英文逗号相隔,格式为:设备名称/设备IP String equipmentB = supplyInfo.getEquipmentB(); if (!checkIp(equipmentB)) { errorInfo.append("B设备格式有误"); } public boolean checkIp(String baseIp) { if (!StringUtils.isEmpty(baseIp)) { String[] baseIps = baseIp.split(","); //大于1 if (baseIps.length >= 1) { for (String ip : baseIps) { String[] lists = ip.split("/"); if (lists.length >= 2 && !"NULL".equals(lists[1])) { //ip为有效值 if (Validator.isIpv4(lists[1]) || Validator.isIpv6(lists[1])) { continue; } else { //不符合Ipv4或者Ipv6即为错误,其他为正确值 return false; } } } } } return true; } }
Mapper层:
Integer importCustomNetworkInfo(@Param("supplyInfos")ListcustomNetworkbaseSupplyInfo);
Mapper.xml文件:
update cus_network_info set when #{supplyInfo.dnnName} then #{supplyInfo.cusName} when #{supplyInfo.dnnName} then #{supplyInfo.basestationIp} where dnn_name in#{supplyInfo.dnnName}
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