修改：

1.居民信息导入：将数据分多批次导入，减少内存占用

epmet-user/epmet-user-server/src/main/java/com/epmet/excel/handler/DynamicEasyExcelListener.java

@@ -2,12 +2,16 @@ package com.epmet.excel.handler;
 
 import com.alibaba.excel.context.AnalysisContext;
 import com.alibaba.excel.event.AnalysisEventListener;
-import com.alibaba.fastjson.JSON;
+import com.epmet.dto.result.FormItemResult;
+import com.epmet.service.impl.IcResiUserImportServiceImpl;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
 
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.stream.Collectors;
 
 /**
  * 创建一个监听器
@@ -15,6 +19,64 @@ import java.util.Map;
 @Slf4j
 public class DynamicEasyExcelListener extends AnalysisEventListener<Map<Integer, String>> {
 
+    /**
+     * 一次性导入的条数
+     */
+    private static final Integer ONCE_BATCH_IMPORT_ITEMS_SIZE = 2000;
+
+    /**
+     * 客户id
+     */
+    private String customerId;
+
+    /**
+     * 当前操作人的AgencyId
+     */
+    private String currUserAgencyId;
+
+    /**
+     * 当前用户ID
+     */
+    private String currentUserId;
+
+    /**
+     * 当前用户agencyId
+     */
+    private String currUserAgencyPids;
+
+    /**
+     * 数据库表名
+     */
+    private String tableName;
+
+    private IcResiUserImportServiceImpl icResiUserImportService;
+
+    /**
+     * item列表
+     */
+    private List<FormItemResult> formItemList;
+
+    /**
+     * 是否是基础信息表
+     */
+    private Boolean isPrimary;
+
+    /**
+     * 有几行是表头
+     */
+    private Integer headRowNumber;
+
+    /**
+     * key:itemId
+     * value:ColumnWrapper 列封装信息，列基础信息和列值
+     */
+    private Map<String, IcResiUserImportServiceImpl.ColumnWrapper> itemIdAndColumnWrapper;
+
+    /**
+     * 被丢弃的header，原因：checkbox的情况下，选项在表格中是多列，但是在item中不存在
+     */
+    private Map<Integer, String> abandonedHeaders;
+
     /**
      * 表头数据（存储所有的表头数据）
      */
@@ -26,6 +88,23 @@ public class DynamicEasyExcelListener extends AnalysisEventListener<Map<Integer,
     private List<Map<Integer, String>> dataList = new ArrayList<>();
 //    Map<Integer, String> dataList = new HashMap<>();
 
+
+    public DynamicEasyExcelListener(IcResiUserImportServiceImpl icResiUserImportService, String customerId,
+                                    String currentUserId, String currUserAgencyId,
+                                    String currUserAgencyPids, Boolean isPrimary, String tableName,
+                                    List<FormItemResult> formItemList, Integer headRowNumber) {
+
+        this.customerId = customerId;
+        this.icResiUserImportService = icResiUserImportService;
+        this.formItemList = formItemList;
+        this.isPrimary = isPrimary;
+        this.currentUserId = currentUserId;
+        this.currUserAgencyId = currUserAgencyId;
+        this.currUserAgencyPids = currUserAgencyPids;
+        this.tableName = tableName;
+        this.headRowNumber = headRowNumber;
+    }
+
     /**
      * 这里会一行行的返回头
      *
@@ -34,9 +113,35 @@ public class DynamicEasyExcelListener extends AnalysisEventListener<Map<Integer,
      */
     @Override
     public void invokeHeadMap(Map<Integer, String> headMap, AnalysisContext context) {
-        //log.info("解析到一条头数据:{}", JSON.toJSONString(headMap));
-        //存储全部表头数据
         headList.add(headMap);
+
+        if (headList.size() < headRowNumber) {
+            return;
+        }
+
+        // 合并多级表头到一个list中，key为列序号
+        Map<Integer, List<String>> headers = icResiUserImportService.mergeMultiLevelHeadLabels(headList);
+
+        // 清洗表头数据,通过items剔除，并且得到options
+        abandonedHeaders = icResiUserImportService.removeAndGetOptionsFromHeaders(headers, formItemList);
+
+        // 交换表头信息，以label连起来的string作为key，列号的列表作为value
+        HashMap<String, List<Integer>> combinedHeaders = icResiUserImportService.exchangeKeyAndValueOfHeaders(headers);
+
+        // 得到客户配置item数据。<"兴趣爱好:兴趣特长", item对象>
+        Map<String, FormItemResult> customizedLabelCompbinedItemsMap = formItemList.stream().collect(
+                Collectors.toMap(formItem -> {
+                    String groupLabel = formItem.getGroupLabel();
+                    String label = formItem.getLabel();
+                    if (StringUtils.isNotBlank(groupLabel)) {
+                        return groupLabel.concat(":").concat(label);
+                    } else {
+                        return label;
+                    }
+                }, formItem -> formItem)
+        );
+
+        itemIdAndColumnWrapper = icResiUserImportService.convertExcelHeaders2DBColumnWrappers(customizedLabelCompbinedItemsMap, combinedHeaders);
     }
 
     /**
@@ -48,26 +153,37 @@ public class DynamicEasyExcelListener extends AnalysisEventListener<Map<Integer,
      */
     @Override
     public void invoke(Map<Integer, String> data, AnalysisContext context) {
-        //log.info("解析到一条数据:{}", JSON.toJSONString(data));
+        // 每2000条数据处理一次
         dataList.add(data);
+
+        // 达到了批量导入的阈值，执行一次持久化
+        if (dataList.size() >= ONCE_BATCH_IMPORT_ITEMS_SIZE) {
+            execPersistant();
+        }
     }
 
     /**
-     * 所有数据解析完成了 都会来调用
+     * 所有数据解析完成了会调用
-     *
+     *  此处也要判断，然后执行持久化，因为最后一部分数据，达不到批量阈值，不能漏掉，在最后结束的时候给他执行进去
      * @param context
      */
     @Override
     public void doAfterAllAnalysed(AnalysisContext context) {
-        // 这里也要保存数据，确保最后遗留的数据也存储到数据库
+        if (dataList.size() != 0) {
-        //log.info("所有数据解析完成！");
+            execPersistant();
         }
-
-    public List<Map<Integer, String>> getHeadList() {
-        return headList;
     }
 
-    public List<Map<Integer, String>> getDataList() {
+    /**
-        return dataList;
+     * 执行持久化
+     */
+    private void execPersistant() {
+        // 持久化
+        if (isPrimary) {
+            icResiUserImportService.persistIcResiBaseInfo(itemIdAndColumnWrapper, dataList, currUserAgencyId, abandonedHeaders, currUserAgencyPids, currentUserId, tableName);
+        } else {
+            icResiUserImportService.persistIcResiExtraInfo(itemIdAndColumnWrapper, dataList, currUserAgencyId, abandonedHeaders, currentUserId, tableName, customerId);
+        }
+        dataList.clear();
     }
 }

epmet-user/epmet-user-server/src/main/java/com/epmet/service/impl/IcResiUserImportServiceImpl.java

@@ -232,7 +232,7 @@ public class IcResiUserImportServiceImpl implements IcResiUserImportService, Res
 
             // 上传主表信息
             importIcResiBaseInfoFromExcel(formItemList,excelPathName, IcResiUserTableEnum.IC_RESI_USER.getSheetNo(), IcResiUserTableEnum.IC_RESI_USER.getHeadRowNo(),
-                    currUserAgencyId, agencyInfo.getPids(), loginUserId, IcResiUserTableEnum.IC_RESI_USER.getTableName());
+                    currUserAgencyId, agencyInfo.getPids(), loginUserId, IcResiUserTableEnum.IC_RESI_USER.getTableName(), customerId);
 
             // 上传附表信息
             for (IcResiUserTableEnum sheet : IcResiUserTableEnum.values()) {
@@ -320,43 +320,12 @@ public class IcResiUserImportServiceImpl implements IcResiUserImportService, Res
      * @param currentUserId
      * @return
      */
-    private Object importIcResiBaseInfoFromExcel(List<FormItemResult> formItemList, String excelPathName, int sheetNo, int headRowNumber, String currUserAgencyId, String currUserAgencyPids, String currentUserId,
+    private void importIcResiBaseInfoFromExcel(List<FormItemResult> formItemList, String excelPathName, int sheetNo, int headRowNumber, String currUserAgencyId, String currUserAgencyPids, String currentUserId,
-                                                 String tableName) {
+                                                 String tableName, String customerId) {
-        DynamicEasyExcelListener readListener = new DynamicEasyExcelListener();
-        //EasyExcelFactory.read(new File(excelPathName)).registerReadListener(readListener).headRowNumber(headRowNumber).sheet(sheetNo).doRead();
-        EasyExcel.read(new File(excelPathName)).registerReadListener(readListener).headRowNumber(headRowNumber).sheet(sheetNo).doRead();
-
-        List<Map<Integer, String>> headList = readListener.getHeadList();
-        List<Map<Integer, String>> dataList = readListener.getDataList();
-
-        // 合并多级表头到一个list中，key为列序号
-        Map<Integer, List<String>> headers = mergeMultiLevelHeadLabels(headList);
-
-        // 清洗表头数据,通过items剔除，并且得到options
-        Map<Integer, String> abandonedHeaders = removeAndGetOptionsFromHeaders(headers, formItemList);
-
-        // 交换表头信息，以label连起来的string作为key，列号的列表作为value
-        HashMap<String, List<Integer>> combinedHeaders = exchangeKeyAndValueOfHeaders(headers);
-
-        // 得到客户配置item数据。<"兴趣爱好:兴趣特长", item对象>
-        Map<String, FormItemResult> customizedLabelCompbinedItemsMap = formItemList.stream().collect(
-                Collectors.toMap(formItem -> {
-                    String groupLabel = formItem.getGroupLabel();
-                    String label = formItem.getLabel();
-                    if (StringUtils.isNotBlank(groupLabel)) {
-                        return groupLabel.concat(":").concat(label);
-                    } else {
-                        return label;
-                    }
-                }, formItem -> formItem)
-        );
-
-        Map<String, ColumnWrapper> itemIdAndColumnWrapper = convertExcelHeaders2DBColumnWrappers(customizedLabelCompbinedItemsMap, combinedHeaders);
-
-        // 持久化
-        persistIcResiBaseInfo(itemIdAndColumnWrapper, dataList, currUserAgencyId, abandonedHeaders, currUserAgencyPids, currentUserId, tableName);
 
-        return headers;
+        DynamicEasyExcelListener readListener = new DynamicEasyExcelListener(this, customerId, currentUserId, currUserAgencyId, currUserAgencyPids,
+                true, tableName, formItemList, headRowNumber);
+        EasyExcel.read(new File(excelPathName)).registerReadListener(readListener).headRowNumber(headRowNumber).sheet(sheetNo).doRead();
     }
 
     /**
@@ -371,34 +340,12 @@ public class IcResiUserImportServiceImpl implements IcResiUserImportService, Res
      * @param targetTableName 要插入哪一个表
      * @return
      */
-    private Object importIcResiExtraInfoFromExcel(List<FormItemResult> formItemList, String excelPathName, int sheetNo, int headRowNumber, String currUserAgencyId, String currentUserId,
+    private void importIcResiExtraInfoFromExcel(List<FormItemResult> formItemList, String excelPathName, int sheetNo, int headRowNumber, String currUserAgencyId, String currentUserId,
                                                   String targetTableName, String customerId) {
-        DynamicEasyExcelListener readListener = new DynamicEasyExcelListener();
-        EasyExcelFactory.read(new File(excelPathName)).registerReadListener(readListener).headRowNumber(headRowNumber).sheet(sheetNo).doRead();
-
-        List<Map<Integer, String>> headList = readListener.getHeadList();
-        List<Map<Integer, String>> dataList = readListener.getDataList();
-
-        Map<Integer, List<String>> headers = mergeMultiLevelHeadLabels(headList);
-
-        Map<Integer, String> abandonedHeaders = removeAndGetOptionsFromHeaders(headers, formItemList);
 
-        HashMap<String, List<Integer>> combinedHeaders = exchangeKeyAndValueOfHeaders(headers);
+        DynamicEasyExcelListener readListener = new DynamicEasyExcelListener(this, customerId, currentUserId, currUserAgencyId, null,
-
+                false, targetTableName, formItemList, headRowNumber);
-        Map<String, FormItemResult> formItemMap = formItemList.stream().collect(
+        EasyExcelFactory.read(new File(excelPathName)).registerReadListener(readListener).headRowNumber(headRowNumber).sheet(sheetNo).doRead();
-                Collectors.toMap(formItem -> {
-                    String groupLabel = formItem.getGroupLabel();
-                    String label = formItem.getLabel();
-                    if (StringUtils.isNotBlank(groupLabel)) {
-                        return groupLabel.concat(":").concat(label);
-                    } else {
-                        return label;
-                    }
-                }, formItem -> formItem)
-        );
-        Map<String, ColumnWrapper> headerColumnWrapper = convertExcelHeaders2DBColumnWrappers(formItemMap, combinedHeaders);
-        persistIcResiExtraInfo(headerColumnWrapper, dataList, currUserAgencyId, abandonedHeaders, currentUserId, targetTableName, customerId);
-        return headerColumnWrapper;
     }
 
     /**
@@ -408,7 +355,7 @@ public class IcResiUserImportServiceImpl implements IcResiUserImportService, Res
      * @param currUserAgencyId 当前用户的组织id
      * @param checkBoxOptionColumnIdxAndLabel 复选框的列号&label中文
      */
-    private void persistIcResiBaseInfo(Map<String, ColumnWrapper> itemIdAndColumnWrapper, List<Map<Integer, String>> dataRows,
+    public void persistIcResiBaseInfo(Map<String, ColumnWrapper> itemIdAndColumnWrapper, List<Map<Integer, String>> dataRows,
                                        String currUserAgencyId, Map<Integer, String> checkBoxOptionColumnIdxAndLabel,
                                        String currUserAgencyPids, String currentUserId, String tableName) {
 
@@ -517,7 +464,7 @@ public class IcResiUserImportServiceImpl implements IcResiUserImportService, Res
      * @param checkBoxOptionColumnIdxAndLabel 复选框的列号&label中文
      * @param targetTableName 要插入到哪一个表
      */
-    private void persistIcResiExtraInfo(Map<String, ColumnWrapper> headerColumnWrapper, List<Map<Integer, String>> dataRows,
+    public void persistIcResiExtraInfo(Map<String, ColumnWrapper> headerColumnWrapper, List<Map<Integer, String>> dataRows,
                                         String currUserAgencyId, Map<Integer, String> checkBoxOptionColumnIdxAndLabel,
                                         String currentUserId, String targetTableName, String customerId) {
 
@@ -709,7 +656,7 @@ public class IcResiUserImportServiceImpl implements IcResiUserImportService, Res
      * @author wxz
      * @date 2021.10.28 21:27:18
      */
-    private HashMap<String, List<Integer>> exchangeKeyAndValueOfHeaders(Map<Integer, List<String>> headers) {
+    public HashMap<String, List<Integer>> exchangeKeyAndValueOfHeaders(Map<Integer, List<String>> headers) {
         HashMap<String, List<Integer>> itemAndColIndexs = new LinkedHashMap<>();
 
         headers.forEach((k, v) -> {
@@ -734,7 +681,7 @@ public class IcResiUserImportServiceImpl implements IcResiUserImportService, Res
      * @author wxz
      * @date 2021.10.28 21:07:12
      */
-    private Map<Integer, String> removeAndGetOptionsFromHeaders(Map<Integer, List<String>> headers, List<FormItemResult> items) {
+    public Map<Integer, String> removeAndGetOptionsFromHeaders(Map<Integer, List<String>> headers, List<FormItemResult> items) {
         List<String> itemLabels = items.stream().map(i -> i.getLabel()).collect(Collectors.toList());
         Map<Integer, String> abandonedOptions = new HashMap<>();
         for (Map.Entry<Integer, List<String>> entry:headers.entrySet()) {
@@ -765,7 +712,7 @@ public class IcResiUserImportServiceImpl implements IcResiUserImportService, Res
      *                        value：列号组成的列表(例如[1,2,3])
      * @return key:itemId；value：columnWrapper
      */
-    private Map<String, ColumnWrapper> convertExcelHeaders2DBColumnWrappers(Map<String, FormItemResult> customizedLabelCompbinedItemsMap, Map<String, List<Integer>> combinedHeaders) {
+    public Map<String, ColumnWrapper> convertExcelHeaders2DBColumnWrappers(Map<String, FormItemResult> customizedLabelCompbinedItemsMap, Map<String, List<Integer>> combinedHeaders) {
 
 //        HashMap<String, List<ColumnWrapper>> tables = new HashMap<>();
         Map<String, ColumnWrapper> columns = new LinkedHashMap<>(combinedHeaders.size());
@@ -835,7 +782,7 @@ public class IcResiUserImportServiceImpl implements IcResiUserImportService, Res
      * @author wxz
      * @date 2021.10.27 16:17:34
      */
-    private Map<Integer, List<String>> mergeMultiLevelHeadLabels(List<Map<Integer, String>> headList) {
+    public Map<Integer, List<String>> mergeMultiLevelHeadLabels(List<Map<Integer, String>> headList) {
 
         Map<Integer, String> lastNotNullHeads = new LinkedHashMap<>();