The integration and use of the JXLS framework in the Spring Boot project
The integration and use of the JXLS framework in the Spring Boot project
In the Spring Boot project, integrated JXLS framework can easily handle the import and export operation of Excel files.JXLS is an open source framework based on the Apache Poi library. It provides a simple and easy -to -use API that can easily read and write the Excel file.
To integrate the JXLS framework in the Spring Boot project, you need to follow the steps below:
1. Add JXLS dependencies to Maven or Gradle configuration files.Add the following dependencies to the pom.xml file:
<dependency>
<groupId>org.jxls</groupId>
<artifactId>jxls-core</artifactId>
<version>2.6.0</version>
</dependency>
<dependency>
<groupId>org.jxls</groupId>
<artifactId>jxls-reader</artifactId>
<version>2.0.6</version>
</dependency>
2. Create an Excel file containing the JXLS template.You can define the layout and format of the data in the Excel file, and the data marks that need to be filled.The extension of the template file can be .xls or .xlsx.
3. Create a Controller class in the Spring Boot project to handle the HTTP request for importing and exporting Excel files.In this class, you need to use the JXLS framework API to read and write to the excel file.
Below is an example of importing and exporting Excel files using the JXLS framework in the Spring Boot project:
@RestController
public class ExcelController {
@PostMapping("/import")
public String importExcel(@RequestParam("file") MultipartFile file) {
try {
InputStream is = file.getInputStream();
// Read the excel file
List<User> userList = ExcelUtil.readExcel(is);
// Process imported data
// ...
Return "Excel file is successfully imported!";
} catch (IOException e) {
e.printStackTrace();
Return "Import the Excel file failed!";
}
}
@GetMapping("/export")
public void exportExcel(HttpServletResponse response) {
try {
// Prepare data to be exported
List<User> userList = getUserList();
// Use the JXLS framework to fill the data into the Excel template
InputStream is = getClass().getResourceAsStream("/templates/user_template.xls");
ByteArrayOutputStream os = new ByteArrayOutputStream();
Context context = new Context();
context.putVar("users", userList);
JxlsHelper.getInstance().processTemplate(is, os, context);
// Set the response header
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition", "attachment;filename=user_data.xls");
// Write the excel file to the response output stream
OutputStream out = response.getOutputStream();
os.writeTo(out);
out.flush();
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
In the above example, the `ImportExcel` method is used to process the request to import the Excel file, and the` Exportexcel` method is used to process the request to export the Excel file.In the `ImportExcel` method, read the data from the excel file uploaded through the` Excelutil.Readexcel` method.In the `Exportexcel` method, the` jxlshelper` class of the JXLS framework fills the data into the Excel template, and then writes the generated excel file into the response output stream, and returns to the client to download.
This is a simple example that you can make appropriate adjustments and expansion according to your business needs.By integrating the JXLS framework, you can easily implement the Excel file introduction and export function in the Spring Boot project.
