EasyExcel listener无法通过Autowired注入xxMapper
easyexcel listener无法通过Autowired注入xxMapper
文章目录
- easyexcel listener无法通过Autowired注入xxMapper
-
- bug记录：
- 解决方案：
- easyexcel 使用例子
-
- controller
- ServiceImpl
- listener
bug记录：
productMapper注入一直为null,而procureDetailMapper却正常注入？
@Slf4j
@Component
public class ProductInfoExcelListener<T> extends AnalysisEventListener<T> {
/**
* 缓存的数据
*/
private List<ProductEntity> cachedDataList = ListUtils.newArrayList();
/**
* 存临时表的数据
*/
// private List tempDataList = ListUtils.newArrayList();
private final StringBuilder errMsg = new StringBuilder();
private boolean hasException = false;
private boolean hasNext = true;
private IProcureDetailMapper procureDetailMapper;
@Autowired
private IProductMapper productMapper;
public ProductInfoExcelListener(IProcureDetailMapper procureDetailMapper) {
this.procureDetailMapper = procureDetailMapper;
}
// 每解析一行数据就会调用一次该方法 todo
@Override
public void invoke(T t, AnalysisContext analysisContext) {
// 获取行号
int index = analysisContext.readRowHolder().getRowIndex() + 1;
ProductExcelVo data = (ProductExcelVo) t;
String productId = data.getProductId();
String productNum = data.getProductNum();
String categoryName = data.getCategoryName();
String specName = data.getSpecName();
if (!StringUtils.hasText(productId)) {
hasException = true;
setErrMsg(index, ":商品条码不能为空");
return;
}
if (!StringUtils.hasText(productNum)) {
hasException = true;
setErrMsg(index, ":商品数量不能为空");
return;
}
if (StringUtils.hasText(productNum)) {
int productNumInteger = Integer.parseInt(productNum);
if (productNumInteger <= 0) {
hasException = true;
setErrMsg(index, ":商品数量不能小于0");
return;
}
}
if (!StringUtils.hasText(categoryName)) {
hasException = true;
setErrMsg(index, ":分类名称不能为空");
return;
}
//根据商品条码查询对应的分类信息
ProductEntity productBaseDByProductId = productMapper.findProductBaseDByProductId(productId);
if (productBaseDByProductId == null) {
hasException = true;
setErrMsg(index, ":该商品不存在");
return;
}
if (!productBaseDByProductId.getCategoryName().equals(categoryName)) {
hasException = true;
setErrMsg(index, ":该商品的分类名称有误");
return;
}
cachedDataList.add(productBaseDByProductId);
log.info("invoke" + index);
}
@Override
public void doAfterAllAnalysed(AnalysisContext analysisContext) {
// excel解析完毕以后需要执行的代码
// saveData()
log.info("doAfterAllAnalysed ");
}
public List getCachedDataList() {
return cachedDataList;
}
private void setErrMsg(int index, String msg) {
this.hasNext = false;
this.hasException = true;
errMsg.append("第").append(index).append(msg);
log.error("row {} org data verify failure:{};", index, msg);
}
public StringBuilder getErrMsg() {
return errMsg;
}
public boolean isHasException() {
return hasException;
}
}
@Slf4j
@Service
@RequiredArgsConstructor(onConstructor_ = {@Autowired})
public class ProcureDetailServiceImpl implements IProcureDetailService {
private final IProcureDetailMapper procureDetailMapper;
@Override
public ProductInfo uploadAndParseExcel(MultipartFile file) throws IOException, CustomException {
ProductInfoExcelListener<ProductExcelVo> listener = new ProductInfoExcelListener<>(procureDetailMapper);
EasyExcel.read(file.getInputStream(),
ProductExcelVo.class,
listener).sheet().doRead();
System.out.println("*******************");
System.out.println(listener.getCachedDataList().size() == 0);
System.out.println("1111111111111111111");
List<ProductEntity> cachedDataList = listener.getCachedDataList();
log.info("isHasException:{}", listener.getErrMsg());
if(listener.isHasException()){
throw new CustomException(CommonConstant.ErrorConstants.EXCEL_UNKNOWN_ERROR.getCode(), listener.getErrMsg().toString());
}
for (ProductEntity p: cachedDataList){
System.out.println(p.toString());
}
return null;
}
}
springboot在listener和filter中注入mapper会为null?
解决方案：
- https://codeleading.com/article/13375080759/
- 构造器注入
easyexcel 使用例子
<dependency>
<groupId>com.alibabagroupId>
<artifactId>easyexcelartifactId>
<version>3.1.0version>
dependency>
controller
@Slf4j
@RestController
@RequestMapping("/api-procure/procureController")
@RequiredArgsConstructor(onConstructor_ = {@Autowired})
public class ProcureController extends BaseController {
private final IProcureDetailService procureDetailService;
/**
* 上传excel并且校验解析 procure
*
* @param file excel
* @param loginUser 登录用户
* @return
* @throws Exception
*/
@PostMapping("/uploadExcel/procure")
public Result<ProductInfo> uploadExcelP(@RequestBody MultipartFile file, @LoginUser LoginUserBean loginUser) throws Exception {
log.info("upload excel file:{}", file.getName());
ProductInfo data = procureDetailService.uploadAndParseExcel(file, loginUser, CommonConstant.Type.PROCURE.getCode());
return Result.succeed(data, "上传成功");
}
}
ServiceImpl
@Slf4j
@Service
@RequiredArgsConstructor(onConstructor_ = {@Autowired})
public class ProcureDetailServiceImpl implements IProcureDetailService {
private final IProcureDetailMapper procureDetailMapper;
@Override
public ProductInfo uploadAndParseExcel(MultipartFile file, LoginUserBean loginUser, String type) throws IOException, CustomException {
ProductInfoExcelListener<ProductExcelVo> listener = new ProductInfoExcelListener<>(procureDetailMapper, productMapper);
EasyExcel.read(file.getInputStream(),
ProductExcelVo.class,
listener).sheet().doRead();
if (listener.getCachedDataList().size() == 0) {
throw new CustomException(CommonConstant.ErrorConstants.EXCEL_UNKNOWN_ERROR.getCode(), "没有有效数据");
}
List<ProcureDetailEntity> cachedDataList = listener.getCachedDataList();
log.info("isHasException:{}", listener.getErrMsg());
if (listener.isHasException()) {
throw new CustomException(CommonConstant.ErrorConstants.EXCEL_UNKNOWN_ERROR.getCode(), listener.getErrMsg().toString());
}
// for (ProductEntity p : cachedDataList) {
// System.out.println(p.toString());
// }
if (cachedDataList == null || cachedDataList.size() == 0) {
throw new CustomException(CommonConstant.ErrorConstants.EXCEL_UNKNOWN_ERROR.getCode(), "未检测到有效数据");
}
String userId = loginUser.getUserId();
Date date = new Date();
//申请标号采购申请单ID 订单
//“P”+YYYYMMDDHHMMSS+6位随机数 “PO”+YYYYMMDDHHMMSS+6位随机数
String pattern = "YYYYMMDDHHMMSS";
SimpleDateFormat dateFormat = new SimpleDateFormat(pattern);
String format = dateFormat.format(date);
int i = (int) ((Math.random() * 9 + 1) * 100000);
String procureId;
if (type.equals(CommonConstant.Type.PROCURE.getCode())) {
procureId = "P" + format + i;
} else if (type.equals(CommonConstant.Type.ORDER.getCode())) {
procureId = "PO" + format + i;
} else {
procureId = null;
log.info("这一步执行到就完蛋了");
}
//存入t_procure_detail_tmp表
procureDetailMapper.batchInsertProcureDetailTempList(procureId, userId, date, cachedDataList);
//返回响应实体列表
ProductInfo productInfo = new ProductInfo();
List<ProcureDetailEntity> list = cachedDataList.stream().map(e -> {
e.setProcureId(procureId);
return e;
}).collect(Collectors.toList());
productInfo.setProductList(list);
return productInfo;
}
}
listener
/**
* @description <采购申请解析返回的excel信息监听器>
*
*
* 解析模板导入的数据，对商品条码、分类名称、规格名称校验其有效性是否存在，对数量校验大于0.其数据保存在采购单商品临时表.
* @author: zhouchaoyu
* @Date: 2023-11-14
*/
@Slf4j
@Component
public class ProductInfoExcelListener<T> extends AnalysisEventListener<T> {
/**
* 缓存的数据
*/
private List<ProcureDetailEntity> cachedDataList = ListUtils.newArrayList();
/**
* 存临时表的数据
*/
// private List tempDataList = ListUtils.newArrayList();
private final StringBuilder errMsg = new StringBuilder();
private boolean hasException = false;
private boolean hasNext = true;
private IProcureDetailMapper procureDetailMapper;
private IProductMapper productMapper;
public ProductInfoExcelListener(IProcureDetailMapper procureDetailMapper, IProductMapper productMapper) {
this.procureDetailMapper = procureDetailMapper;
this.productMapper = productMapper;
}
// 每解析一行数据就会调用一次该方法 todo
@Override
public void invoke(T t, AnalysisContext analysisContext) {
// 获取行号
int index = analysisContext.readRowHolder().getRowIndex() + 1;
ProductExcelVo data = (ProductExcelVo) t;
String productId = data.getProductId();
String productNum = data.getProductNum();
String categoryName = data.getCategoryName();
String specName = data.getSpecName();
if (!StringUtils.hasText(productId)) {
hasException = true;
setErrMsg(index, ":商品条码不能为空");
return;
}
if (!StringUtils.hasText(productNum)) {
hasException = true;
setErrMsg(index, ":商品数量不能为空");
return;
}
if (StringUtils.hasText(productNum)) {
int productNumInteger = Integer.parseInt(productNum);
if (productNumInteger <= 0) {
hasException = true;
setErrMsg(index, ":商品数量不能小于0");
return;
}
}
if (!StringUtils.hasText(categoryName)) {
hasException = true;
setErrMsg(index, ":分类名称不能为空");
return;
}
//根据商品条码查询对应的分类信息
ProductEntity productBaseDByProductId = productMapper.findProductBaseDByProductId(productId);
if (productBaseDByProductId == null) {
hasException = true;
setErrMsg(index, ":该商品不存在");
return;
}
if (!productBaseDByProductId.getCategoryName().equals(categoryName)) {
hasException = true;
setErrMsg(index, ":该商品的分类名称有误");
return;
}
String uid = IdGenerator.getIdStr() ;
ProcureDetailEntity procureDetailEntity = new ProcureDetailEntity();
procureDetailEntity.setId(uid);
procureDetailEntity.setProductId(productBaseDByProductId.getProductId());
procureDetailEntity.setProductNum(Integer.parseInt(productNum));
procureDetailEntity.setCategoryId(productBaseDByProductId.getCategoryId());
procureDetailEntity.setSpecId(specName);
procureDetailEntity.setRowStatus("1");
procureDetailEntity.setProductName(productBaseDByProductId.getProductName());
procureDetailEntity.setCategoryName(productBaseDByProductId.getCategoryName());
procureDetailEntity.setInventoryCount(productBaseDByProductId.getInventoryCount());
BigDecimal costPrice = productBaseDByProductId.getCostPrice();
BigDecimal totalPrice = costPrice.multiply(new BigDecimal(productNum)).setScale(2, RoundingMode.HALF_UP);
procureDetailEntity.setTotalPrice(totalPrice);
cachedDataList.add(procureDetailEntity);
log.info("invoke" + index);
}
@Override
public void doAfterAllAnalysed(AnalysisContext analysisContext) {
// excel解析完毕以后需要执行的代码
// saveData()
log.info("doAfterAllAnalysed ");
}
public List<ProcureDetailEntity> getCachedDataList() {
return cachedDataList;
}
private void setErrMsg(int index, String msg) {
this.hasNext = false;
this.hasException = true;
errMsg.append("第").append(index).append(msg);
log.error("row {} org data verify failure:{};", index, msg);
}
public StringBuilder getErrMsg() {
return errMsg;
}
public boolean isHasException() {
return hasException;
}
}