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所屬分類：百科知識
在Spring Boot中，實現(xiàn)Excel表格導(dǎo)出的方式有很多種，以下是幾種常見的方法：
- 使用Apache POI：Apache POI是一個開源的Java API，用于處理Microsoft Office文檔格式，包括Excel電子表格。在Spring Boot中，可以使用Apache POI創(chuàng)建Excel文檔，并將其寫入HTTP響應(yīng)中，以實現(xiàn)Excel表格的導(dǎo)出。
- 使用EasyPOI：EasyPOI是一個開源的Java API，用于處理Excel電子表格。它基于Apache POI和Jxls開發(fā)，提供了更加簡單易用的API，可以幫助我們快速實現(xiàn)Excel表格的導(dǎo)出。
- 使用Jxls：Jxls是一個用于生成Excel報表的Java庫。在Spring Boot中，可以使用Jxls創(chuàng)建Excel文檔，并將其寫入HTTP響應(yīng)中，以實現(xiàn)Excel表格的導(dǎo)出。
- 使用第三方庫：還有其他一些第三方的Java庫可以用于生成Excel電子表格，例如Aspose.Cells、JExcelApi等，它們也可以在Spring Boot中使用，實現(xiàn)Excel表格的導(dǎo)出。
需要注意的是，無論使用哪種方法，都需要將Excel文檔寫入HTTP響應(yīng)中，并設(shè)置正確的Content-Type和Content-Disposition頭信息，以確保瀏覽器能夠正確地識別Excel文檔并下載它。
一、Apache POI
- maven依賴坐標
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<dependency>??<groupId>org.apache.poi</groupId>??<artifactId>poi</artifactId>??<version>4.1.2</version></dependency><dependency>??<groupId>org.apache.poi</groupId>??<artifactId>poi-ooxml</artifactId>??<version>4.1.2</version></dependency> |
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@RestControllerpublic class ExcelController {??@GetMapping("/export")??public void exportExcel(HttpServletResponse response) throws Exception {????// 創(chuàng)建Excel文檔????XSSFWorkbook workbook = new XSSFWorkbook();????XSSFSheet sheet = workbook.createSheet("Sheet1");????// 創(chuàng)建表頭????XSSFRow header = sheet.createRow(0);????header.createCell(0).setCellValue("姓名");????header.createCell(1).setCellValue("年齡");????header.createCell(2).setCellValue("性別");????// 填充數(shù)據(jù)????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());????}????// 設(shè)置響應(yīng)頭信息????response.setContentType("application/vnd.ms-excel");????response.setHeader("Content-Disposition", "attachment; filename=users.xlsx");????// 將Excel文檔寫入響應(yīng)流中????ServletOutputStream outputStream = response.getOutputStream();????workbook.write(outputStream);????outputStream.flush();????outputStream.close();??}??// 模擬獲取用戶數(shù)據(jù)??private List<User> getUserList() {????List<User> users = new ArrayList<>();????users.add(new User("張三", 25, "男"));????users.add(new User("李四", 30, "女"));????users.add(new User("王五", 28, "男"));????return users;??}??// 用戶實體類??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依賴坐標
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<dependency>??<groupId>cn.afterturn</groupId>??<artifactId>easypoi-base</artifactId>??<version>4.2.0</version></dependency><dependency>??<groupId>cn.afterturn</groupId>??<artifactId>easypoi-web</artifactId>??<version>4.2.0</version></dependency> |
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@RestControllerpublic class ExcelController {??@GetMapping("/export")??public void exportExcel(HttpServletResponse response) throws Exception {????// 創(chuàng)建Excel文檔????Workbook workbook = ExcelExportUtil.exportExcel(new ExportParams("用戶列表", "用戶信息"), User.class, getUserList());????// 設(shè)置響應(yīng)頭信息????response.setContentType("application/vnd.ms-excel");????response.setHeader("Content-Disposition", "attachment; filename=users.xlsx");????// 將Excel文檔寫入響應(yīng)流中????ServletOutputStream outputStream = response.getOutputStream();????workbook.write(outputStream);????outputStream.flush();????outputStream.close();??}??// 模擬獲取用戶數(shù)據(jù)??private List<User> getUserList() {????List<User> users = new ArrayList<>();????users.add(new User("張三", 25, "男"));????users.add(new User("李四", 30, "女"));????users.add(new User("王五", 28, "男"));????return users;??}??// 用戶實體類??private static class User {????@Excel(name = "姓名", orderNum = "0")????private String name;????@Excel(name = "年齡", orderNum = "1")????private int age;????@Excel(name = "性別", 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依賴坐標
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<dependency>??<groupId>org.jxls</groupId>??<artifactId>jxls</artifactId>??<version>2.14.0</version></dependency><dependency>??<groupId>org.jxls</groupId>??<artifactId>jxls-poi</artifactId>??<version>2.14.0</version></dependency> |
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@RestControllerpublic class ExcelController {??@GetMapping("/export")??public void exportExcel(HttpServletResponse response) throws Exception {????// 加載Excel模板????InputStream inputStream = getClass().getResourceAsStream("/templates/user_template.xlsx");????Workbook workbook = WorkbookFactory.create(inputStream);????// 填充數(shù)據(jù)????List<User> users = getUserList();????Map<String, Object> model = new HashMap<>();????model.put("users", users);????JxlsHelper.getInstance().processTemplate(model, workbook.getSheetAt(0));????// 設(shè)置響應(yīng)頭信息????response.setContentType("application/vnd.ms-excel");????response.setHeader("Content-Disposition", "attachment; filename=users.xlsx");????// 將Excel文檔寫入響應(yīng)流中????ServletOutputStream outputStream = response.getOutputStream();????workbook.write(outputStream);????outputStream.flush();????outputStream.close();??}??// 模擬獲取用戶數(shù)據(jù)??private List<User> getUserList() {????List<User> users = new ArrayList<>();????users.add(new User("張三", 25, "男"));????users.add(new User("李四", 30, "女"));????users.add(new User("王五", 28, "男"));????return users;??}??// 用戶實體類??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;????}??}} |
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