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springboot-easypoi
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‎springboot-easypoi/.gitignore

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HELP.md
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/target/
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!.mvn/wrapper/maven-wrapper.jar
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### STS ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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.sts4-cache
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### IntelliJ IDEA ###
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.idea
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*.iws
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*.iml
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*.ipr
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### NetBeans ###
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/nbproject/private/
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/nbbuild/
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/dist/
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/nbdist/
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/.nb-gradle/
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/build/
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### VS Code ###
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.vscode/

‎springboot-easypoi/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>2.1.3.RELEASE</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<groupId>cn.tellsea</groupId>
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<artifactId>springboot-easypoi</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>springboot-easypoi</name>
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<description>Demo project for Spring Boot</description>
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<properties>
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<java.version>1.8</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.mybatis.spring.boot</groupId>
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<artifactId>mybatis-spring-boot-starter</artifactId>
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<version>2.0.1</version>
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</dependency>
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<dependency>
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<groupId>mysql</groupId>
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<artifactId>mysql-connector-java</artifactId>
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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<optional>true</optional>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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<!-- easypoi -->
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<dependency>
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<groupId>cn.afterturn</groupId>
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<artifactId>easypoi-base</artifactId>
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<version>3.2.0</version>
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</dependency>
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<dependency>
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<groupId>cn.afterturn</groupId>
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<artifactId>easypoi-web</artifactId>
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<version>3.2.0</version>
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</dependency>
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<dependency>
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<groupId>cn.afterturn</groupId>
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<artifactId>easypoi-annotation</artifactId>
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<version>3.2.0</version>
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</dependency>
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<!--<dependency> 这个相当于上面三个，用这个会启动报错，貌似是jar包冲突
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<groupId>cn.afterturn</groupId>
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<artifactId>easypoi-spring-boot-starter</artifactId>
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<version>3.2.0</version>
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</dependency>-->
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<!-- 通用Mapper启动器 -->
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<dependency>
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<groupId>tk.mybatis</groupId>
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<artifactId>mapper-spring-boot-starter</artifactId>
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<version>2.1.0</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-thymeleaf</artifactId>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎springboot-easypoi/src/main/java/cn/tellsea/SpringbootEasypoiApplication.java

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package cn.tellsea;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import tk.mybatis.spring.annotation.MapperScan;
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@SpringBootApplication
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@MapperScan("cn.tellsea.mapper")
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public class SpringbootEasypoiApplication {
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public static void main(String[] args) {
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SpringApplication.run(SpringbootEasypoiApplication.class, args);
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}
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}

‎springboot-easypoi/src/main/java/cn/tellsea/bean/User.java

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package cn.tellsea.bean;
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import cn.afterturn.easypoi.excel.annotation.Excel;
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import lombok.Data;
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import javax.persistence.Table;
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import javax.validation.constraints.NotBlank;
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import java.io.Serializable;
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import java.util.Date;
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@Data
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@Table(name = "tb_user")
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public class User implements Serializable {
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@Excel(name = "id", width = 15)
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@NotBlank(message = "该字段不能为空")
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private Integer id;
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@Excel(name = "姓名", orderNum = "0", width = 30)
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private String name;
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@Excel(name = "性别", replace = {"男_1", "女_2"}, orderNum = "1", width = 30)
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private String sex;
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@Excel(name = "生日", exportFormat = "yyyy-MM-dd HH:mm:ss", importFormat = "yyyy-MM-dd HH:mm:ss", orderNum = "2", width = 30)
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private Date birthday;
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}

‎springboot-easypoi/src/main/java/cn/tellsea/mapper/UserMapper.java

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package cn.tellsea.mapper;
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import cn.tellsea.bean.User;
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import tk.mybatis.mapper.common.Mapper;
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import tk.mybatis.mapper.common.MySqlMapper;
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public interface UserMapper extends Mapper<User>, MySqlMapper<User> {
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}

‎springboot-easypoi/src/main/java/cn/tellsea/service/UserService.java

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package cn.tellsea.service;
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import cn.tellsea.bean.User;
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import java.util.List;
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public interface UserService {
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List<User> selectAll();
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void insertList(List<User> list);
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}

‎springboot-easypoi/src/main/java/cn/tellsea/service/impl/UserServiceImpl.java

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package cn.tellsea.service.impl;
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import cn.tellsea.bean.User;
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import cn.tellsea.mapper.UserMapper;
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import cn.tellsea.service.UserService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import java.util.List;
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@Service
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public class UserServiceImpl implements UserService {
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@Autowired
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private UserMapper userMapper;
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@Override
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public List<User> selectAll() {
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return userMapper.selectAll();
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}
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@Override
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public void insertList(List<User> list) {
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userMapper.insertList(list);
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}
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}

‎springboot-easypoi/src/main/java/cn/tellsea/utils/ExcelUtils.java

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package cn.tellsea.utils;
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import cn.afterturn.easypoi.excel.ExcelExportUtil;
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import cn.afterturn.easypoi.excel.ExcelImportUtil;
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import cn.afterturn.easypoi.excel.entity.ExportParams;
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import cn.afterturn.easypoi.excel.entity.ImportParams;
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import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.poi.ss.usermodel.Workbook;
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import org.springframework.web.multipart.MultipartFile;
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import javax.servlet.http.HttpServletResponse;
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import java.io.File;
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import java.io.IOException;
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import java.net.URLEncoder;
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import java.util.List;
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import java.util.Map;
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import java.util.NoSuchElementException;
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//Excel导入导出工具类
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public class ExcelUtils {
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public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName,
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boolean isCreateHeader, HttpServletResponse response) {
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ExportParams exportParams = new ExportParams(title, sheetName);
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exportParams.setCreateHeadRows(isCreateHeader);
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defaultExport(list, pojoClass, fileName, response, exportParams);
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}
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public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName,
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HttpServletResponse response) {
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defaultExport(list, pojoClass, fileName, response, new ExportParams(title, sheetName));
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}
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public static void exportExcel(List<Map<String, Object>> list, String fileName, HttpServletResponse response) {
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defaultExport(list, fileName, response);
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}
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private static void defaultExport(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response,
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ExportParams exportParams) {
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Workbook workbook = ExcelExportUtil.exportExcel(exportParams, pojoClass, list);
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if (workbook != null)
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;
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downLoadExcel(fileName, response, workbook);
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}
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private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) {
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try {
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response.setCharacterEncoding("UTF-8");
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response.setHeader("content-Type", "application/vnd.ms-excel");
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response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
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workbook.write(response.getOutputStream());
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} catch (IOException e) {
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// throw new NormalException(e.getMessage());
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}
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}
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private static void defaultExport(List<Map<String, Object>> list, String fileName, HttpServletResponse response) {
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Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);
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if (workbook != null)
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;
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downLoadExcel(fileName, response, workbook);
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}
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public static <T> List<T> importExcel(String filePath, Integer titleRows, Integer headerRows, Class<T> pojoClass) {
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if (StringUtils.isBlank(filePath)) {
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return null;
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}
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ImportParams params = new ImportParams();
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params.setTitleRows(titleRows);
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params.setHeadRows(headerRows);
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List<T> list = null;
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try {
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list = ExcelImportUtil.importExcel(new File(filePath), pojoClass, params);
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} catch (NoSuchElementException e) {
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// throw new NormalException("模板不能为空");
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} catch (Exception e) {
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e.printStackTrace();
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// throw new NormalException(e.getMessage());
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}
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return list;
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}
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public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows,
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Class<T> pojoClass) {
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if (file == null) {
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return null;
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}
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ImportParams params = new ImportParams();
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params.setTitleRows(titleRows);
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params.setHeadRows(headerRows);
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List<T> list = null;
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try {
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list = ExcelImportUtil.importExcel(file.getInputStream(), pojoClass, params);
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} catch (NoSuchElementException e) {
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// throw new NormalException("excel文件不能为空");
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} catch (Exception e) {
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// throw new NormalException(e.getMessage());
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System.out.println(e.getMessage());
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}
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return list;
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}
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}

‎springboot-easypoi/src/main/java/cn/tellsea/web/ExcelController.java

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package cn.tellsea.web;
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import cn.afterturn.easypoi.excel.ExcelImportUtil;
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import cn.afterturn.easypoi.excel.entity.ImportParams;
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import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult;
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import cn.tellsea.bean.User;
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import cn.tellsea.service.UserService;
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import cn.tellsea.utils.ExcelUtils;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.*;
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import org.springframework.web.multipart.MultipartFile;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.util.List;
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/**
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* 数据导出导入功能
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* easypoi官方文档：http://easypoi.mydoc.io/
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* 修改自定义样式：https://blog.csdn.net/qq_37598011/article/details/80918565
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*/
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@Slf4j
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@RestController
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public class ExcelController {
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@Autowired
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private UserService userService;
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/**
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* 导出Excel
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*
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* @param response
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*/
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@GetMapping("/exportExcel")
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public void exportExcel(HttpServletResponse response) {
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List<User> personList = userService.selectAll();
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// 导出操作
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ExcelUtils.exportExcel(personList, "easypoi导出功能", "导出sheet1", User.class, "测试user.xls", response);
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}
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/**
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* 导入Excel
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*
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* @param file
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* @return
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*/
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@PostMapping("/importExcel")
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public String importExcel(@RequestParam("file") MultipartFile file) {
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ImportParams importParams = new ImportParams();
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// 数据处理
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importParams.setHeadRows(1);
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importParams.setTitleRows(1);
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// 需要验证
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importParams.setNeedVerfiy(false);
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try {
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ExcelImportResult<User> result = ExcelImportUtil.importExcelMore(file.getInputStream(), User.class, importParams);
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List<User> userList = result.getList();
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userService.insertList(userList);
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log.info("从Excel导入数据一共 {} 行 ", userList.size());
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return "导入成功";
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} catch (IOException e) {
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log.error("导入失败：{}", e.getMessage());
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return "导入失败";
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} catch (Exception e1) {
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log.error("导入失败：{}", e1.getMessage());
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return "导入失败";
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}
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}
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}

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