导入导出2.2

.idea/compiler.xml

@@ -2,6 +2,7 @@
 <project version="4">
   <component name="CompilerConfiguration">
     <annotationProcessing>
+      <profile default="true" name="Default" enabled="true" />
       <profile name="Annotation profile for springboot" enabled="true">
         <sourceOutputDir name="target/generated-sources/annotations" />
         <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />

.vscode/settings.json

@@ -1,3 +1,4 @@
 {
-    "java.compile.nullAnalysis.mode": "automatic"
+    "java.compile.nullAnalysis.mode": "automatic",
+    "java.configuration.updateBuildConfiguration": "interactive"
 }

vuetest/springboot/pom.xml

@@ -76,6 +76,23 @@
 			<version>2.3</version>
 		</dependency>
 
+		<!-- 引入hutool -->
+		<dependency>
+			<groupId>cn.hutool</groupId>
+			<artifactId>hutool-all</artifactId>
+			<version>5.8.18</version>
+		</dependency>
+
+		<!-- 引入poi -->
+		<dependency>
+			<groupId>org.apache.poi</groupId>
+			<artifactId>poi-ooxml</artifactId>
+			<version>5.2.3</version>
+		</dependency>
+
+
+
+
 		<!-- 添加 freemarker 模板引擎依赖 -->
 		<dependency>
 			<groupId>org.freemarker</groupId>

vuetest/springboot/src/main/java/com/example/springboot/controller/UserController.java

@@ -10,11 +10,22 @@ import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.example.springboot.service.IUserService;
 import com.example.springboot.entity.User;
 
-import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.web.multipart.MultipartFile;
+import java.io.IOException;
+import java.io.InputStream;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.servlet.ServletOutputStream;
+import java.net.URLEncoder;
+import cn.hutool.poi.excel.ExcelReader;
+import cn.hutool.poi.excel.ExcelWriter;
+import cn.hutool.poi.excel.ExcelUtil;
+import org.springframework.beans.factory.annotation.Value;
+import java.util.LinkedHashMap;
+import java.time.LocalDateTime;
 
 /**
  * <p>
@@ -32,6 +43,9 @@ public class UserController {
     @Resource
     private IUserService userService;
 
+    @Value("${files.upload.path}")  // 从配置文件中读取上传路径
+    private String fileUploadPath;
+
     // 新增或者更新
     @PostMapping
     public boolean save(@RequestBody User user) {
@@ -79,6 +93,98 @@ public class UserController {
         queryWrapper.orderByDesc("id");
         return userService.page(new Page<>(pageNum, pageSize), queryWrapper);
     }
+
+
+    //导入接口
+    @CrossOrigin  // 添加跨域注解
+    @PostMapping("/import")
+    public boolean imp(@RequestParam("file") MultipartFile file) throws IOException {
+        if (file.isEmpty()) {
+            return false;
+        }
+        
+        try {
+            InputStream inputStream = file.getInputStream();
+            ExcelReader reader = ExcelUtil.getReader(inputStream);
+            
+            // 设置列名映射
+            reader.addHeaderAlias("用户名", "username");
+            reader.addHeaderAlias("密码", "password");
+            reader.addHeaderAlias("昵称", "nickname");
+            reader.addHeaderAlias("邮箱", "email");
+            reader.addHeaderAlias("电话", "phone");
+            reader.addHeaderAlias("地址", "address");
+            
+            // 读取数据
+            List<User> list = reader.readAll(User.class);
+            
+            // 设置创建时间
+            for (User user : list) {
+                user.setCreateTime(LocalDateTime.now());
+            }
+            
+            // 保存到数据库
+            return userService.saveBatch(list);
+            
+        } catch (Exception e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+
+    //导出接口
+    @GetMapping("/export")
+    public void export(HttpServletResponse response) throws IOException {
+        try {
+            // 查询所有数据
+            List<User> list = userService.list();
+            
+            // 创建一个工作簿
+            ExcelWriter writer = ExcelUtil.getWriter(true);
+            
+            // 清除默认标题别名
+            writer.clearHeaderAlias();
+            
+            // 按照指定顺序设置标题别名
+            LinkedHashMap<String, String> headerAliasMap = new LinkedHashMap<>();
+            headerAliasMap.put("username", "用户名");
+            headerAliasMap.put("password", "密码");
+            headerAliasMap.put("nickname", "昵称");
+            headerAliasMap.put("email", "邮箱");
+            headerAliasMap.put("phone", "电话");
+            headerAliasMap.put("address", "地址");
+            
+            // 设置标题别名
+            writer.setHeaderAlias(headerAliasMap);
+            
+            // 只导出设置了别名的字段
+            writer.setOnlyAlias(true);
+            
+            // 写入数据
+            writer.write(list, true);
+            
+            // 设置响应头
+            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8");
+            String fileName = URLEncoder.encode("用户信息.xlsx", "UTF-8");
+            response.setHeader("Content-Disposition", "attachment;filename=" + fileName);
+            
+            // 输出
+            ServletOutputStream out = response.getOutputStream();
+            writer.flush(out, true);
+            
+            // 关闭流
+            writer.close();
+            out.close();
+            
+        } catch (Exception e) {
+            e.printStackTrace();
+            response.reset();
+            response.setContentType("application/json");
+            response.setCharacterEncoding("utf-8");
+            response.getWriter().println("导出失败：" + e.getMessage());
+        }
+    }
 }
 
 

vuetest/springboot/src/main/java/com/example/springboot/entity/User.java

@@ -3,9 +3,12 @@ package com.example.springboot.entity;
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.FieldFill;
 import java.io.Serializable;
 import java.time.LocalDateTime;
 import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
 
 /**
  * <p>
@@ -15,6 +18,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
  * @author hzk
  * @since 2025-02-10
  */
+@Data
 @TableName("sys_user")
 @Schema(description = "User对象")
 public class User implements Serializable {
@@ -26,26 +30,32 @@ public class User implements Serializable {
     private Integer id;
 
     @Schema(description = "用户名")
-    private String username;
+    private String username = "";
 
     @Schema(description = "密码")
-    private String password;
+    private String password = "";
 
     @Schema(description = "邮箱")
-    private String email;
+    private String email = "";
 
     @Schema(description = "电话")
-    private String phone;
+    private String phone = "";
 
     @Schema(description = "地址")
-    private String address;
+    private String address = "";
 
     @Schema(description = "昵称")
-    private String nickname;
+    private String nickname = "";
 
+    @TableField(fill = FieldFill.INSERT)
     @Schema(description = "创建时间")
     private LocalDateTime createTime;
 
+    // 构造函数
+    public User() {
+        this.createTime = LocalDateTime.now();
+    }
+
     public Integer getId() {
         return id;
     }

vuetest/springboot/src/main/resources/application.yml

@@ -9,6 +9,11 @@ spring:
   jackson:
     serialization:
       fail-on-empty-beans: false
+  servlet:
+    multipart:
+      max-file-size: 10MB
+      max-request-size: 10MB
+      enabled: true
 
 server:
   port: 9090
@@ -23,4 +28,9 @@ springdoc:
     enabled: true
   swagger-ui:
     path: /swagger-ui.html
-    enabled: true
+    enabled: true
+
+files:
+  upload:
+    path: D:/temp/  # Windows系统
+    # path: /tmp/   # Linux/Mac系统