easyexcel导入进行通用校验

easyexcel导入进行通用校验

  • 构建基础校验工具类
    • 使用自定义校验注解
    • 创建excel导入工具类
    • 使用例子

构建基础校验工具类

import cn.hutool.core.bean.BeanUtil;
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.exception.ExcelDataConvertException;
import com.alibaba.excel.metadata.data.ReadCellData;
import com.alibaba.excel.read.listener.ReadListener;
import com.alibaba.excel.read.metadata.holder.ReadSheetHolder;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.StringUtils;

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * @author: Gang_Wang
 * @description
 * @Date: 2022/11/29 下午4:16
 */
@Slf4j
public class BaseListener<T> implements ReadListener<T> {

    private Class<?> headClazz;


    //读取数据map形式
    private final List<Map<String, Object>> mapData = new ArrayList<>();

    //读取数据实体类泛型形式
    private final List<T> data = new ArrayList<>();

    /**非空校验map*/
    private final Map<String, Boolean> nullAbleFieldMap = new HashMap<>();

    //格式校验map
    private final Map<String, String> checkFormatFieldMap = new HashMap<>();

    //长度校验map
    private final Map<String, Integer> checkLengthFieldMap = new HashMap<>();

    //枚举值校验map
    private final Map<String, String[]> checkEnumFieldMap = new HashMap<>();

    //校验的字典数据失败集合
    private final Map<String, String> checkDictFieldMap = new HashMap<>();

    //校验的字典数据
    private Map<String, Map<String,Object>> dictMap = new HashMap<>();

    //数据校验错误信息map key:错误的行号  value:错误信息描述
    private final Map<Integer, String> errorMessageMap = new HashMap<>();


    /**
     * 获得错误信息
     * @return
     */
    public String getErrorMessageStr() {
        StringBuilder stringBuilder = new StringBuilder();
        if(getErrorMessageMap().size()>0){
            getErrorMessageMap().forEach((k,v) -> {
                stringBuilder.append("第").append(k).append("行:").append(v);
            });
        }
        return stringBuilder.toString();
    }



    public List<Map<String, Object>> getMapData() {
        return mapData;
    }

    public List<T> getData() {
        return data;
    }

    public Map<Integer, String> getErrorMessageMap() {
        return errorMessageMap;
    }

    public BaseListener() {
    }

    /**
     * @param headClazz excel model 类对象
     */
    public BaseListener(Class<?> headClazz) {
        this.headClazz = headClazz;
    }

    public BaseListener(Class<?> headClazz,Map<String, Map<String,Object>> dictMap ) {
        this.headClazz = headClazz;
        this.dictMap = dictMap;
    }

    /**
     * 读取发生异常时的方法
     *
     * @param exception
     * @param context
     * @throws Exception
     */
    @Override
    public void onException(Exception exception, AnalysisContext context) {
        // 如果是某一个单元格的转换异常 能获取到具体行号
        // 如果要获取头的信息 配合invokeHeadMap使用
        if (exception instanceof ExcelDataConvertException) {
            ExcelDataConvertException excelDataConvertException = (ExcelDataConvertException)exception;
            log.error("第{}行,第{}列解析异常,数据为:{}", excelDataConvertException.getRowIndex() + 1,
                    excelDataConvertException.getColumnIndex(), excelDataConvertException.getCellData());
            errorMessageMap.put(excelDataConvertException.getRowIndex()+1, "第"+ (excelDataConvertException.getColumnIndex()+1) +"列解析异常");
        }
    }


    /**
     * 读取头信息
     *
     * @param headMap
     * @param context
     */
    @Override
    public void invokeHead(Map<Integer, ReadCellData<?>> headMap, AnalysisContext context) {
        ExcelPropertyCheck clazzHeadAnno = this.headClazz.getAnnotation(ExcelPropertyCheck.class);
        Field[] declaredFields = headClazz.getDeclaredFields();
        if (clazzHeadAnno != null && clazzHeadAnno.required()) {
            for (Field declaredField : declaredFields) {
                nullAbleFieldMap.put(declaredField.getName(), true);
            }
        }

        for (Field declaredField : declaredFields) {
            ExcelPropertyCheck annotation = declaredField.getAnnotation(ExcelPropertyCheck.class);
            if (annotation != null) {
                if (annotation.checkFormat()) {
                    checkFormatFieldMap.put(declaredField.getName(), annotation.type() + "");
                }
                if(annotation.checkDict()){
                    checkDictFieldMap.put(declaredField.getName(), "");
                }
                if (annotation.required()) {
                    nullAbleFieldMap.put(declaredField.getName(), true);
                } else {
                    nullAbleFieldMap.remove(declaredField.getName());
                }
                if (annotation.required() && annotation.length() != -1) {
                    checkLengthFieldMap.put(declaredField.getName(), annotation.length());
                }
                /*if (annotation.required() && annotation.value().length != 0) {
                    checkEnumFieldMap.put(declaredField.getName(), annotation.value());
                }*/
            }
        }
    }


    @Override
    public void invoke(T t, AnalysisContext analysisContext) {
        int rowIndex = ((ReadSheetHolder) analysisContext.currentReadHolder()).getRowIndex() + 1;
        try {
            if(checkFieldAllNull(t)){
                return ;
            }
        } catch (IllegalAccessException e) {
            log.error("判断导入为空报错");
        }
        StringBuilder error = new StringBuilder();
        Field[] declaredFields = t.getClass().getDeclaredFields();
        //必填校验和格式校验
        for (Field declaredField : declaredFields) {
            try {
                declaredField.setAccessible(true);
                if (nullAbleFieldMap.get(declaredField.getName()) != null) {
                    if (nullAbleFieldMap.get(declaredField.getName())) {
                        Object o = declaredField.get(t);
                        if (!Objects.nonNull(o)) {
                            error.append(declaredField.getAnnotation(ExcelProperty.class).value()[0]).append("为空;");
                        } else {
                            //字段不为空进行长度校验
                            if (checkLengthFieldMap.get(declaredField.getName()) != null) {
                                if (String.valueOf(o).length() > checkLengthFieldMap.get(declaredField.getName())) {
                                    error.append(declaredField.getAnnotation(ExcelProperty.class).value()[0]).append("长度错误;");
                                }
                            }
                            if (checkEnumFieldMap.get(declaredField.getName()) != null) {
                                if (Integer.parseInt(String.valueOf(o)) == -1) {
                                    error.append(declaredField.getAnnotation(ExcelProperty.class).value()[0]).append("枚举值错误;");
                                }
                            }
                        }
                    }
                }
                //是否需要进行格式校验
                if (checkFormatFieldMap.get(declaredField.getName()) != null) {
                    String res = check(String.valueOf(declaredField.get(t)), Integer.valueOf(checkFormatFieldMap.get(declaredField.getName())));
                    if (StringUtils.hasText(res)) {
                        error.append(res);
                    }
                }
                if(true ==declaredField.getAnnotation(ExcelPropertyCheck.class).checkDict()
                        && org.apache.commons.lang.StringUtils.isNotEmpty(declaredField.getAnnotation(ExcelPropertyCheck.class).dictName())){
                    Object checkValue = checkDict(declaredField.getAnnotation(ExcelPropertyCheck.class).dictName(), (String) declaredField.get(t));
                    if(Objects.isNull(checkValue)){
                        error.append(declaredField.getAnnotation(ExcelProperty.class).value()[0]).append("没有对应字典项;");
                    }
                }
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
        if (StringUtils.hasText(error.toString())) {
            errorMessageMap.put(rowIndex, error.toString());
        }
        mapData.add(BeanUtil.beanToMap(t));
        data.add(t);
    }

    @Override
    public void doAfterAllAnalysed(AnalysisContext context) {
        log.info("excel解析完毕,共解析{}条数据,错误数据{}条,错误详情{}", data.size(), errorMessageMap.size(), errorMessageMap);
    }


    private String check(String str, Integer checkType) {
        if(org.apache.commons.lang.StringUtils.isEmpty(str) || "null".equals(str)){
            return "";
        }
        switch (checkType) {
            case 0:
                return isValidDate(str,"yyyy-MM-dd") ? "" : "日期格式错误;";
            case 1:
                return isValidDate(str,"HH:mm") ? "" : "日期格式错误;";
            default:
                return "";
        }
    }

    /**
     * 获得对应的字典值
     * @param dictType 字典类型
     * @param dictName 字典文字
     * @return
     */
    public Object checkDict(String dictType,String dictName){

        Map<String,Object> dictInfoMap = dictMap.get(dictType);
        if(null == dictInfoMap){
            return null;
        }
        Object dictValue = dictInfoMap.get(dictName);
        return dictValue;
    }

    /**
     * 检测一个字符串是否是时间格式
     * @param str
     * @return
     */
    public static boolean isValidDate(String str, String pattern) {
        boolean convertSuccess = true;
        // 指定日期格式为四位年/两位月份/两位日期,注意yyyy/MM/dd区分大小写;设置lenient为false. 否则SimpleDateFormat会比较宽松地验证日期,比如2007/02/29会被接受,并转换成2007/03/01
        SimpleDateFormat format = new SimpleDateFormat(pattern);
        //SimpleDateFormat format = new SimpleDateFormat("HH:mm");
        try {
            format.setLenient(false);
            format.parse(str);
        } catch (Exception e) {
            convertSuccess = false;
        }
        return convertSuccess;
    }


    public static boolean checkFieldAllNull(Object object) throws IllegalAccessException {
        for (Field f : object.getClass().getDeclaredFields()) {
            f.setAccessible(true);
            if (Modifier.isFinal(f.getModifiers()) && Modifier.isStatic(f.getModifiers())) {
                continue;
            }
            if (!isEmpty(f.get(object))) {
                return false;
            }
            f.setAccessible(false);
        }
        //父类public属性
        for (Field f : object.getClass().getFields()) {
            f.setAccessible(true);
            if (Modifier.isFinal(f.getModifiers()) && Modifier.isStatic(f.getModifiers())) {
                continue;
            }
            if (!isEmpty(f.get(object))) {
                return false;
            }
            f.setAccessible(false);
        }
        return true;
    }

    private static boolean isEmpty(Object object) {
        if (object == null) {
            return true;
        }
        if (object instanceof String && ("").equals(object.toString())) {
            return true;
        }
        if (object instanceof Collection && ((Collection) object).isEmpty()) {
            return true;
        }
        if (object instanceof Map && ((Map) object).isEmpty()) {
            return true;
        }
        if (object instanceof Object[] && ((Object[]) object).length == 0) {
            return true;
        }
        return false;
    }



}

使用自定义校验注解

@Target({ElementType.FIELD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Inherited
@Documented
public @interface ExcelPropertyCheck {
    boolean required() default true; //是否为空,默认不为空。

    boolean checkFormat() default false; //是否进行格式检验,默认不进行。

    int type() default -1; //格式检验类型,int 已经支持的类型有 0->ip、1->端口、2->时间日期格式、

    int length() default -1; //长度校验, int 字符串的长度,-1不进行校验

    boolean checkDict() default false; //是否进行格式检验,默认不进行。

    String dictName() default  "";   //字典名称,用于查询关联字典数据


}

创建excel导入工具类


import com.alibaba.excel.EasyExcel;
import org.springframework.beans.BeanUtils;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * 导入导出工具类
 *
 * @author: Gang_Wang
 * @description
 * @Date: 2022/11/29 下午4:15
 */
public class EasyExcelUtils {

    /**
     * 读取excel 文件
     *
     * @param file     文件
     * @param cl       类对象
     * @param listener 参数校验监听器
     */
    public static <T> Map importExcel(MultipartFile file, Class<T> cl, BaseListener<T> listener) {
        try {
            EasyExcel.read(file.getInputStream(), cl, listener).sheet().doRead();
            return listener.getErrorMessageMap();
        } catch (IOException e) {
            return null;
        }
    }

    /**
     * excleDto 转为对应model实体类
     *
     * @param data
     * @param t
     * @param 
     * @return
     */
    public static <T> List<T> dto2model(Collection<?> data, T t) {
        return data.stream().map(e -> {
            T t1 = null;
            try {
                t1 = (T) t.getClass().newInstance();
            } catch (Exception exception) {
                exception.printStackTrace();
            }
            BeanUtils.copyProperties(e, t1);
            return t1;
        }).collect(Collectors.toList());
    }


}

使用例子

  public R<String> handleImport(MultipartFile excelFile) {
        Map<String, Map<String,Object>> dictMap = Maps.newHashMap();
        Map<String,Object> projectMap = Maps.newHashMap();
        Map<String,Object> postBackTypeMap = Maps.newHashMap();
        List<BaseProjectDictVo>  baseProjectDictVo = baseProjectUserService.getPersonalProjects();
        if(CollectionUtils.isNotEmpty(baseProjectDictVo)){
            baseProjectDictVo.forEach(t->{
                projectMap.put(t.getProjectName(),t.getProjectNo());
            });
        }
        List<BaseSysConfigVO> baseSysConfigVOs = baseSysConfigService.getPostbackTypeDict(GeneralConstants.BaseSysConfigConfigClass.POSTBACK_TYPE);
        baseSysConfigVOs.forEach(t->{
            postBackTypeMap.put(t.getConfigFieldName(),t.getConfigFieldValue());
        });
        dictMap.put("projectNo", projectMap);
        //获得最新项目的备件数据
        List<AssetFittingEntity> assetFittingEntityList = getAssetFittingEntityListByInProjectNoList(
                baseProjectDictVo.stream().map(BaseProjectDictVo::getProjectNo).collect(Collectors.toList()));
        //获得三级的字典接口数据
        List<AssetFittingClassDictVO> assetFittingClassDictVO = assetDeviceService.getAssetFittingClassDict();
        // 导入类别有三级,判断最小的 (电-电-电)
        AssetFittingDataListener listener = new AssetFittingDataListener(AssetFittingImportVO.class, dictMap);
        listener.setAssetFittingClassDictVOS(assetFittingClassDictVO);
        listener.setAssetFittingEntityList(assetFittingEntityList);
        Map errorMap = EasyExcelUtils.importExcel(excelFile, AssetFittingImportVO.class, listener);
        if(errorMap.size() != 0){
            return Result.fail(ErrorCode.ERROR_CE0308, listener.getErrorMessageStr());
        }
        //进行保存操作
        saveAssetFittingClassDictVOList(listener.getData());
        return  Result.ok("success");
    }

其中AssetFittingDataListener.java 是继承了BaseListener.java类的具体实现,目前是专门做业务校验,BaseListener.java里面是专门做通用校验;

下面是AssetFittingImportVO.java 代码如下:

@Getter
@Setter
@ExcelPropertyCheck
@ApiModel(value = "AssetFittingImportVO", description = "备件信息导入VO")
public class AssetFittingImportVO {

    @ExcelPropertyCheck(required = false)
    private Integer id;

    @ExcelProperty(value = "备件名称(必填)", index = 0)
    @ExcelPropertyCheck(required = true)
    private String fittingName;

    /**
     * 项目唯一标识
     */
    @ExcelPropertyCheck(required = false)
    private String projectNo;

    @ExcelProperty(value = "所属项目(必填)", index = 1)
    @ExcelPropertyCheck(required = true, checkDict = true, dictName = "projectNo")
    private String projectName;

    /**
     * 备件类别标识
     */
    @ExcelPropertyCheck(required = false)
    private String fittingClassNo;


    @ExcelProperty(value = "类别一级(必填)", index = 2)
    @ExcelPropertyCheck(required = true)
    private String categoryI;

    @ExcelProperty(value = "类别二级(必填)", index = 3)
    @ExcelPropertyCheck(required = true)
    private String categoryII;

    @ExcelProperty(value = "类别三级(必填)", index = 4)
    @ExcelPropertyCheck(required = true)
    private String categoryIII;

    @ExcelProperty(value = "规格参数(必填)", index = 5)
    @ExcelPropertyCheck(required = true)
    private String fittingPerform;

    /**
     * 备件数量
     */
    @ExcelProperty(value = "数量(必填)", index = 6)
    @ExcelPropertyCheck(required = true)
    private BigDecimal fittingCount;

    /**
     * 备件单位
     */
    @ExcelProperty(value = "单位(必填)", index = 7)
    @ExcelPropertyCheck(required = true)
    private String fittingUnit;

    @ExcelProperty(value = "质保到期时间", index = 8, converter = LocalDateConverter.class)
    @ExcelPropertyCheck(required = false, checkFormat = true, type = ExcelPropertyType.DATE)
    private LocalDate warrantyPeriod;

    @ExcelProperty(value = "备注", index = 9)
    @ExcelPropertyCheck(required = false)
    private String note;
@Component
public class LocalDateConverter implements Converter<LocalDate> {

    @Override
    public Class<LocalDate> supportJavaTypeKey() {
        return LocalDate.class;
    }

    @Override
    public CellDataTypeEnum supportExcelTypeKey() {
        return CellDataTypeEnum.STRING;
    }

    @Override
    public LocalDate convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty,
                                GlobalConfiguration globalConfiguration) throws Exception {
        return LocalDate.parse(cellData.getStringValue(), DateTimeFormatter.ofPattern("yyyy-MM-dd"));
    }

    @Override
    public WriteCellData<String> convertToExcelData(LocalDate value, ExcelContentProperty contentProperty,
                                                GlobalConfiguration globalConfiguration) throws Exception {
        return new WriteCellData<>(value.format(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
    }

}

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