《SpringBoot中实现excel表格导出》

简介

在Spring Boot中，实现Excel表格导出的方式有很多种，以下是几种常见的方法：

1. 使用Apache POI：Apache POI是一个开源的Java api，用于处理Microsoft Office文档格式，包括Excel电子表格。在spring Boot中，可以使用Apache POI创建Excel文档，并将其写入Http响应中，以实现Excel表格的导出。
2. 使用EasyPOI：EasyPOI是一个开源的Java API，用于处理Excel电子表格。它基于Apache POI和Jxls开发，提供了更加简单易用的API，可以帮助我们快速实现Excel表格的导出。
3. 使用Jxls：Jxls是一个用于生成Excel报表的Java库。在Spring Boot中，可以使用Jxls创建Excel文档，并将其写入HTTP响应中，以实现Excel表格的导出。
4. 使用第三方库：还有其他一些第三方的Java库可以用于生成Excel电子表格，例如Aspose.Cells、JExcelApi等，它们也可以在Spring Boot中使用，实现Excel表格的导出。

需要注意的是，无论使用哪种方法，都需要将Excel文档写入HTTP响应中，并设置正确的Content-Type和Content-Disposition头信息，以确保浏览器能够正确地识别Excel文档并下载它。

一、Apache POI

• Maven依赖坐标

<dependency>  <groupId>org.apache.poigroupId>  <artifactId>poiartifactId>  <version>4.1.2version>dependency><dependency>  <groupId>org.apache.poigroupId>  <artifactId>poi-ooxmlartifactId>  <version>4.1.2version>dependency>

@RestControllerpublic class ExcelController {  @GetMapping("/export")  public void exportExcel(httpservletResponse response) throws Exception {    // 创建Excel文档    XSSFWorkbook workbook = new XSSFWorkbook();    XSSFSheet sheet = workbook.createSheet("Sheet1");    // 创建表头    XSSFRow header = sheet.createRow(0);    header.createCell(0).setCellValue("姓名");    header.createCell(1).setCellValue("年龄");    header.createCell(2).setCellValue("性别");    // 填充数据    List<User> users = getUserList();    int rowIndex = 1;    for (User user : users) {      XSSFRow row = sheet.createRow(rowIndex++);      row.createCell(0).setCellValue(user.getName());      row.createCell(1).setCellValue(user.getAge());      row.createCell(2).setCellValue(user.getGender());    }    // 设置响应头信息    response.setContentType("application/vnd.ms-excel");    response.setHeader("Content-Disposition", "attachment; filename=users.xlsx");    // 将Excel文档写入响应流中    ServletOutputStream outputStream = response.getOutputStream();    workbook.write(outputStream);    outputStream.flush();    outputStream.close();  }  // 模拟获取用户数据  private List<User> getUserList() {    List<User> users = new ArrayList<>();    users.add(new User("张三", 25, "男"));    users.add(new User("李四", 30, "女"));    users.add(new User("王五", 28, "男"));    return users;  }  // 用户实体类  private static class User {    private String name;    private int age;    private String gender;    public User(String name, int age, String gender) {      this.name = name;      this.age = age;      this.gender = gender;    }    public String getName() {      return name;    }    public void setName(String name) {      this.name = name;    }    public int getAge() {      return age;    }    public void setAge(int age) {      this.age = age;    }    public String getGender() {      return gender;    }    public void setGender(String gender) {      this.gender = gender;    }  }}

二、Easy POI

• maven依赖坐标

<dependency>  <groupId>cn.afterturngroupId>  <artifactId>easypoi-baseartifactId>  <version>4.2.0version>dependency><dependency>  <groupId>cn.afterturngroupId>  <artifactId>easypoi-WEBartifactId>  <version>4.2.0version>dependency>

@RestControllerpublic class ExcelController {  @GetMapping("/export")  public void exportExcel(HttpServletResponse response) throws Exception {    // 创建Excel文档    Workbook workbook = ExcelExportUtil.exportExcel(new ExportParams("用户列表", "用户信息"), User.class, getUserList());    // 设置响应头信息    response.setContentType("application/vnd.ms-excel");    response.setHeader("Content-Disposition", "attachment; filename=users.xlsx");    // 将Excel文档写入响应流中    ServletOutputStream outputStream = response.getOutputStream();    workbook.write(outputStream);    outputStream.flush();    outputStream.close();  }  // 模拟获取用户数据  private List<User> getUserList() {    List<User> users = new ArrayList<>();    users.add(new User("张三", 25, "男"));    users.add(new User("李四", 30, "女"));    users.add(new User("王五", 28, "男"));    return users;  }  // 用户实体类  private static class User {    @Excel(name = "姓名", orderNum = "0")    private String name;    @Excel(name = "年龄", orderNum = "1")    private int age;    @Excel(name = "性别", orderNum = "2")    private String gender;    public User(String name, int age, String gender) {      this.name = name;      this.age = age;      this.gender = gender;    }    public String getName() {      return name;    }    public void setName(String name) {      this.name = name;    }    public int getAge() {      return age;    }    public void setAge(int age) {      this.age = age;    }    public String getGender() {      return gender;    }    public void setGender(String gender) {      this.gender = gender;    }  }}

三、Jxls

• maven依赖坐标

<dependency>  <groupId>org.jxlsgroupId>  <artifactId>jxlsartifactId>  <version>2.14.0version>dependency><dependency>  <groupId>org.jxlsgroupId>  <artifactId>jxls-poiartifactId>  <version>2.14.0version>dependency>

@RestControllerpublic class ExcelController {  @GetMapping("/export")  public void exportExcel(HttpServletResponse response) throws Exception {    // 加载Excel模板    InputStream inputStream = getClass().getResourceAsStream("/templates/user_template.xlsx");    Workbook workbook = WorkbookFactory.create(inputStream);    // 填充数据    List<User> users = getUserList();    Map<String, Object> model = new HashMap<>();    model.put("users", users);    JxlsHelper.getInstance().processTemplate(model, workbook.getSheetAt(0));    // 设置响应头信息    response.setContentType("application/vnd.ms-excel");    response.setHeader("Content-Disposition", "attachment; filename=users.xlsx");    // 将Excel文档写入响应流中    ServletOutputStream outputStream = response.getOutputStream();    workbook.write(outputStream);    outputStream.flush();    outputStream.close();  }  // 模拟获取用户数据  private List<User> getUserList() {    List<User> users = new ArrayList<>();    users.add(new User("张三", 25, "男"));    users.add(new User("李四", 30, "女"));    users.add(new User("王五", 28, "男"));    return users;  }  // 用户实体类  private static class User {    private String name;    private int age;    private String gender;    public User(String name, int age, String gender) {      this.name = name;      this.age = age;      this.gender = gender;    }    public String getName() {      return name;    }    public void setName(String name) {      this.name = name;    }    public int getAge() {      return age;    }    public void setAge(int age) {      this.age = age;    }    public String getGender() {      return gender;    }    public void setGender(String gender) {      this.gender = gender;    }  }}

来源地址：https://blog.csdn.net/weixin_52236586/article/details/129602624