springboot模板文件下载
时间: 2023-11-15 19:02:04 浏览: 49
SpringBoot模板文件下载需要进行以下几个步骤:
1. 将Excel模板文件放在resources目录下的static/generic/templates/文件夹中。
2. 配置maven插件,使其在打包项目时将Excel模板文件一起打包。
3. 编写文件下载工具类,实现文件下载功能。
4. 进行测试,确保文件下载功能正常。
需要注意的是,在配置maven插件时,需要注意默认会压缩resources目录下的文件,因此需要在服务器读取文件流时解压缩文件,否则浏览器无法正确解析文件。
相关问题
springboot EasyExcel excel 模板文件下载
好的,这里提供使用Spring Boot和EasyExcel实现excel模板文件下载的示例代码:
```java
@RestController
public class ExcelController {
@GetMapping("/downloadExcelTemplate")
public void downloadExcelTemplate(HttpServletResponse response) throws IOException {
String fileName = "excel_template.xlsx";
String sheetName = "Sheet1";
List<List<String>> head = new ArrayList<>();
head.add(Arrays.asList("姓名", "年龄", "性别"));
ExcelWriter excelWriter = EasyExcel.write(response.getOutputStream()).withTemplate(new ClassPathResource("templates/" + fileName).getInputStream()).build();
WriteSheet writeSheet = EasyExcel.writerSheet(sheetName).build();
excelWriter.fill(head, writeSheet);
excelWriter.finish();
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
response.flushBuffer();
}
}
```
在上述代码中,我们使用了`@RestController`注解来声明一个控制器,然后定义了`downloadExcelTemplate`方法来实现excel模板文件下载功能。在该方法中,我们通过`EasyExcel.write()`方法创建了一个ExcelWriter对象,并通过`withTemplate()`方法指定了模板文件的路径。
接下来,我们创建了一个WriteSheet对象,并通过`EasyExcel.writerSheet()`方法设置了sheet的名称。然后,我们通过`excelWriter.fill()`方法将表头数据写入Excel文件中。最后,我们设置响应头并关闭流,即可实现excel模板文件下载功能。
需要注意的是,上述代码中的模板文件必须放在resources/templates目录下。如果您的模板文件不在该目录下,请修改文件路径。
springboot中文件上传下载
以下是SpringBoot中文件上传和下载的步骤:
1. 创建SpringBoot项目并导入相关依赖:
```xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
```
2. 在application.properties文件中配置文件保存路径:
```properties
filePath=E:/springboot_save_file/
```
3. 创建文件上传的Controller:
```java
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
import java.io.File;
import java.io.IOException;
@Controller
public class FileUploadController {
@Value("${filePath}")
private String filePath;
@PostMapping("/upload")
public String uploadFile(@RequestParam("file") MultipartFile file, RedirectAttributes redirectAttributes) {
if (file.isEmpty()) {
redirectAttributes.addFlashAttribute("message", "Please select a file to upload");
return "redirect:/";
}
try {
String fileName = StringUtils.cleanPath(file.getOriginalFilename());
File destFile = new File(filePath + fileName);
file.transferTo(destFile);
redirectAttributes.addFlashAttribute("message", "File uploaded successfully");
} catch (IOException e) {
e.printStackTrace();
redirectAttributes.addFlashAttribute("message", "Failed to upload file");
}
return "redirect:/";
}
}
```
4. 创建文件下载的Controller:
```java
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.Resource;
import org.springframework.core.io.UrlResource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
@Controller
public class FileDownloadController {
@Value("${filePath}")
private String filePath;
@GetMapping("/download/{fileName:.+}")
public ResponseEntity<Resource> downloadFile(@PathVariable String fileName) {
Path file = Paths.get(filePath + fileName);
Resource resource;
try {
resource = new UrlResource(file.toUri());
} catch (IOException e) {
e.printStackTrace();
return ResponseEntity.notFound().build();
}
return ResponseEntity.ok()
.header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + resource.getFilename() + "\"")
.body(resource);
}
}
```
5. 创建Thymeleaf模板文件index.html:
```html
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Spring Boot File Upload/Download</title>
</head>
<body>
<h1>File Upload/Download</h1>
<form method="post" action="/upload" enctype="multipart/form-data">
<input type="file" name="file" />
<input type="submit" value="Upload" />
</form>
<p th:text="${message}"></p>
<hr/>
<h2>Download Files:</h2>
<ul>
<li th:each="file : ${files}">
<a th:href="@{/download/{fileName}(fileName=${file})}" th:text="${file}"></a>
</li>
</ul>
</body>
</html>
```
6. 运行SpringBoot应用,并访问http://localhost:8080/,即可进行文件上传和下载操作。