Spring Boot集成Hadoop的方法是通過在Spring Boot應用程序中使用HDFS客戶端來訪問和操作Hadoop集群。以下是一些步驟：

1. 在Spring Boot應用程序的pom.xml文件中添加Hadoop依賴項：

<dependency>
    <groupId>org.apache.hadoop</groupId>
    <artifactId>hadoop-client</artifactId>
    <version>${hadoop.version}</version>
</dependency>

2. 配置Hadoop集群的連接信息，可以在application.properties文件中添加以下配置：

hadoop.fs.defaultFS=hdfs://<Hadoop Master節點IP>:<Hadoop Master節點端口>
hadoop.user.name=<Hadoop用戶名>

3. 創建一個HadoopService類來封裝Hadoop操作，例如讀取或寫入文件操作等：

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

@Service
public class HadoopService {

    @Value("${hadoop.fs.defaultFS}")
    private String defaultFS;

    @Value("${hadoop.user.name}")
    private String userName;

    public FileSystem getFileSystem() throws Exception {
        Configuration conf = new Configuration();
        conf.set("fs.defaultFS", defaultFS);
        System.setProperty("HADOOP_USER_NAME", userName);
        return FileSystem.get(conf);
    }

    public void uploadFile(String localFilePath, String hdfsFilePath) throws Exception {
        FileSystem fs = getFileSystem();
        fs.copyFromLocalFile(new Path(localFilePath), new Path(hdfsFilePath));
    }

    public void downloadFile(String hdfsFilePath, String localFilePath) throws Exception {
        FileSystem fs = getFileSystem();
        fs.copyToLocalFile(new Path(hdfsFilePath), new Path(localFilePath));
    }
}

4. 在Spring Boot應用程序中使用HadoopService來操作Hadoop文件系統。例如，可以在Controller中注入HadoopService并調用其方法：

@RestController
public class HadoopController {

    @Autowired
    private HadoopService hadoopService;

    @GetMapping("/uploadFile")
    public String uploadFile() {
        try {
            hadoopService.uploadFile("localFilePath", "hdfsFilePath");
            return "File uploaded to Hadoop successfully";
        } catch (Exception e) {
            return "Error uploading file to Hadoop";
        }
    }

    @GetMapping("/downloadFile")
    public String downloadFile() {
        try {
            hadoopService.downloadFile("hdfsFilePath", "localFilePath");
            return "File downloaded from Hadoop successfully";
        } catch (Exception e) {
            return "Error downloading file from Hadoop";
        }
    }
}

通過以上步驟，您可以在Spring Boot應用程序中集成Hadoop并實現對Hadoop集群的文件操作。