From affd7e9f1cc591be36102299cac45b35d9536a17 Mon Sep 17 00:00:00 2001
From: huliguo <2023611923@qq.com>
Date: 星期六, 12 七月 2025 15:08:49 +0800
Subject: [PATCH] stream流改for
---
src/main/java/com/linghu/controller/UserController.java | 230 +++++++++++++++++++++++++++++++++++++--------------------
1 files changed, 150 insertions(+), 80 deletions(-)
diff --git a/src/main/java/com/linghu/controller/UserController.java b/src/main/java/com/linghu/controller/UserController.java
index 9c77be3..619e913 100644
--- a/src/main/java/com/linghu/controller/UserController.java
+++ b/src/main/java/com/linghu/controller/UserController.java
@@ -1,17 +1,32 @@
package com.linghu.controller;
import com.alibaba.excel.EasyExcel;
+import com.alibaba.excel.ExcelWriter;
+import com.alibaba.excel.write.handler.SheetWriteHandler;
+import com.alibaba.excel.write.metadata.WriteSheet;
+import com.alibaba.excel.write.metadata.holder.WriteSheetHolder;
+import com.alibaba.excel.write.metadata.holder.WriteWorkbookHolder;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.linghu.listener.PlatformExcelListener;
+import com.linghu.listener.UserExcelListener;
import com.linghu.model.common.ResponseResult;
+import com.linghu.model.entity.Platform;
import com.linghu.model.entity.Sectionalization;
import com.linghu.model.entity.User;
+import com.linghu.model.excel.ExcelDataWithRow;
+import com.linghu.model.excel.PlatformExcel;
import com.linghu.model.excel.UserExcel;
import com.linghu.model.vo.UserPageVO;
import com.linghu.service.SectionalizationService;
import com.linghu.service.UserService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
+import org.apache.poi.ss.usermodel.DataValidation;
+import org.apache.poi.ss.usermodel.DataValidationConstraint;
+import org.apache.poi.ss.usermodel.DataValidationHelper;
+import org.apache.poi.ss.usermodel.Sheet;
+import org.apache.poi.ss.util.CellRangeAddressList;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
@@ -22,9 +37,8 @@
import java.io.ByteArrayOutputStream;
import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
+import java.time.LocalDateTime;
+import java.util.*;
import java.util.stream.Collectors;
@RestController
@@ -104,15 +118,48 @@
@GetMapping("/downloadTemplate")
@ApiOperation("下载模板")
public ResponseEntity<byte[]> downloadTemplate() throws IOException {
- ByteArrayOutputStream out = new ByteArrayOutputStream();
- EasyExcel.write(out, UserExcel.class).sheet("账号模板").doWrite(new ArrayList<>());
+ // 1. 查询所有分组名称
+ List<Sectionalization> sections = sectionalizationService.list(null);
+ List<String> sectionNames = sections.stream()
+ .map(Sectionalization::getSectionalization_name)
+ .filter(Objects::nonNull)
+ .collect(Collectors.toList());
+ // 2. 创建Excel写出器
+ ByteArrayOutputStream out = new ByteArrayOutputStream();
+
+ // 3. 使用自定义的SheetWriteHandler来添加数据验证
+ ExcelWriter excelWriter = EasyExcel.write(out, UserExcel.class)
+ .registerWriteHandler(new SheetWriteHandler() {
+ @Override
+ public void afterSheetCreate(WriteWorkbookHolder writeWorkbookHolder,
+ WriteSheetHolder writeSheetHolder) {
+ Sheet sheet = writeSheetHolder.getSheet();
+
+ // 添加数据验证（下拉框）
+ DataValidationHelper helper = sheet.getDataValidationHelper();
+ CellRangeAddressList rangeList = new CellRangeAddressList(
+ 1, 65535, 3, 3); // D列（第4列）
+
+ DataValidationConstraint constraint = helper.createExplicitListConstraint(
+ sectionNames.toArray(new String[0]));
+ DataValidation validation = helper.createValidation(constraint, rangeList);
+ sheet.addValidationData(validation);
+ }
+ })
+ .build();
+
+ // 4. 写入空数据
+ WriteSheet writeSheet = EasyExcel.writerSheet("账号模板").build();
+ excelWriter.write(new ArrayList<>(), writeSheet);
+ excelWriter.finish();
+
+ // 5. 构建响应
return ResponseEntity.ok()
- .header(HttpHeaders.CONTENT_DISPOSITION, "attachment;filename=keyword_template.xlsx")
+ .header(HttpHeaders.CONTENT_DISPOSITION, "attachment;filename=user_template.xlsx")
.contentType(MediaType.APPLICATION_OCTET_STREAM)
.body(out.toByteArray());
}
-
/**
* 导入文件
@@ -123,97 +170,120 @@
@PostMapping("/importUserExcel")
@ApiOperation("导入用户数据")
public ResponseResult importUserExcel(@RequestParam("file") MultipartFile file) {
- //查找出用户列表
- List<User> userList = userService.list();
- //名称
- Map<String, User> nameMap = userList.stream()
- .collect(Collectors.toMap(
- User::getUser_name, // Key映射
- excel -> excel, // Value映射
- (oldValue, newValue) -> oldValue // 键冲突处理（保留旧值）
- ));
-
- //查找出分组列表
- List<Sectionalization> list = sectionalizationService.list();
- //分组
- Map<String, Sectionalization> sectionalizationMap = list.stream()
- .collect(Collectors.toMap(
- Sectionalization::getSectionalization_name, // Key映射
- excel -> excel, // Value映射
- (oldValue, newValue) -> oldValue // 键冲突处理（保留旧值）
- ));
-
try {
- // 检查文件是否为空
+ // 1. 检查文件是否为空
if (file.isEmpty()) {
return ResponseResult.error("上传文件不能为空");
}
- // 读取Excel数据
- List<UserExcel> excelList = EasyExcel.read(file.getInputStream())
- .head(UserExcel.class)
- .sheet()
- .doReadSync();
+ // 2. 读取数据库中已有的用户和分组，用于重复校验
+ // 2.1 已存在的用户（按用户名和邮箱分组）
+ List<User> userList = userService.list();
+ Map<String, User> userNameMap = userList.stream()
+ .collect(Collectors.toMap(
+ User::getUser_name,
+ user -> user, // 变量名修正为user（原excel变量名不合理）
+ (oldValue, newValue) -> oldValue // 重复用户名保留旧值
+ ));
+ Map<String, User> userEmailMap = userList.stream()
+ .collect(Collectors.toMap(
+ User::getUser_email,
+ user -> user,
+ (oldValue, newValue) -> oldValue // 重复邮箱保留旧值
+ ));
- // 数据转换与验证
+ // 2.2 已存在的分组（按分组名称映射）
+ List<Sectionalization> sectionalizationList = sectionalizationService.list();
+ Map<String, Sectionalization> sectionMap = sectionalizationList.stream()
+ .collect(Collectors.toMap(
+ Sectionalization::getSectionalization_name,
+ section -> section,
+ (oldValue, newValue) -> oldValue
+ ));
+
+ // 3. 读取Excel数据（使用自定义监听器）
+ UserExcelListener listener = new UserExcelListener();
+ EasyExcel.read(file.getInputStream(), UserExcel.class, listener)
+ .sheet() // 读取第一个sheet
+ .doRead(); // 执行读取
+
+ // 4. 校验Excel数据并转换为User对象
+ List<ExcelDataWithRow<UserExcel>> excelDataList = listener.getDataList();
+ List<User> insertUserList = new ArrayList<>();
List<String> errorMessages = new ArrayList<>();
- for (UserExcel excel : excelList) {
- // 检查必要字段
- if (!StringUtils.hasText(excel.getUser_name())) {
- errorMessages.add("账户名不能为空");
- continue;
- }
- if (!StringUtils.hasText(excel.getUser_email())) {
- errorMessages.add("邮箱不能为空");
- continue;
- }
- if (!StringUtils.hasText(String.valueOf(excel.getPassword()))) {
- errorMessages.add("密码不能为空");
- continue;
+ Set<String> emailSet = new HashSet<>(); // 用于校验导入数据中的邮箱重复
+
+ for (ExcelDataWithRow<UserExcel> excelData : excelDataList) {
+ int rowNum = excelData.getRowNumber();
+ UserExcel excelRowData = excelData.getData();
+ List<String> rowErrors = new ArrayList<>();
+
+ // 4.1 校验必填字段
+ if (!StringUtils.hasText(excelRowData.getUser_name())) {
+ rowErrors.add("账户名不能为空");
+ } else if (userNameMap.containsKey(excelRowData.getUser_name())) {
+ rowErrors.add("账户名已存在（数据库中重复）");
}
- if (!StringUtils.hasText(excel.getSectionalization_name())) {
- errorMessages.add("分组不能为空");
- continue;
+ if (!StringUtils.hasText(excelRowData.getUser_email())) {
+ rowErrors.add("邮箱不能为空");
+ } else {
+ if (userEmailMap.containsKey(excelRowData.getUser_email())) {
+ rowErrors.add("邮箱已存在（数据库中重复）");
+ }
+ if (emailSet.contains(excelRowData.getUser_email())) {
+ rowErrors.add("邮箱重复（导入数据中重复）");
+ }
}
- if (nameMap.containsKey(excel.getUser_name())){
- errorMessages.add("用户名称重复");
- continue;
+
+ if (!StringUtils.hasText(excelRowData.getPassword())) {
+ rowErrors.add("密码不能为空");
+ }
+
+ if (!StringUtils.hasText(excelRowData.getSectionalization_name())) {
+ rowErrors.add("账户分组不能为空");
+ } else if (!sectionMap.containsKey(excelRowData.getSectionalization_name())) {
+ rowErrors.add("账户分组不存在（数据库中无此分组）");
+ }
+
+ // 4.2 处理校验结果
+ if (!rowErrors.isEmpty()) {
+ // 记录错误信息
+ errorMessages.add(String.format("第%d行：%s", rowNum, String.join("；", rowErrors)));
+ } else {
+ // 校验通过，转换为User对象
+ User user = new User();
+ user.setUser_name(excelRowData.getUser_name());
+ user.setUser_email(excelRowData.getUser_email());
+ user.setPassword(excelRowData.getPassword()); // 实际场景建议加密存储
+ user.setSectionalization_id(sectionMap.get(excelRowData.getSectionalization_name()).getSectionalization_id());
+ user.setStatus("正常");
+
+ insertUserList.add(user);
+ emailSet.add(excelRowData.getUser_email()); // 记录已添加的邮箱，用于去重
}
}
- // 处理错误
+
+ // 5. 处理错误或执行批量插入
if (!errorMessages.isEmpty()) {
- return ResponseResult.error("数据验证失败: " + String.join("; ", errorMessages));
+ // 组装错误信息
+ StringBuilder errorMsg = new StringBuilder();
+ errorMsg.append("导入失败，共").append(errorMessages.size()).append("条数据有误：\n");
+ errorMessages.forEach(msg -> errorMsg.append(msg).append("\n"));
+ return ResponseResult.error( errorMsg.toString());
+ } else {
+ // 批量插入数据库
+ userService.saveBatch(insertUserList);
+ return ResponseResult.success("导入成功，共新增" + insertUserList.size() + "条用户数据");
}
- // 开始添加
- for (UserExcel excel : excelList) {
- User user = new User();
- if (sectionalizationMap.containsKey(excel.getSectionalization_name())) {
- user.setSectionalization_id(sectionalizationMap.get(excel.getSectionalization_name()).getSectionalization_id());
- }else {
- //新增
- Sectionalization sectionalization = new Sectionalization();
- sectionalization.setSectionalization_name(excel.getSectionalization_name());
- sectionalizationService.save(sectionalization);
- user.setSectionalization_id(sectionalization.getSectionalization_id());
- }
- user.setUser_email(excel.getUser_email());
- user.setUser_name(excel.getUser_name());
- user.setPassword(excel.getPassword());
- user.setStatus("正常");
- userService.save(user);
- }
- // 返回信息
- return ResponseResult.success();
- }
- catch (Exception e) {
- // 记录详细异常信息
-
- return ResponseResult.error("文件解析失败：" + e.getMessage());
+ } catch (Exception e) {
+ // 捕获异常（如文件格式错误、IO异常等）
+ return ResponseResult.error("导入失败：" + e.getMessage());
}
}
+
}
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