spring boot 整合 FastDFS_Client问题

Springboot工程引入淘宝开源插件FastDFS_client启动报错：

org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [FdfsConnectionPool [maxTotal=50, blockWhenExhausted=true, maxWaitMillis=100, lifo=true, fairness=false, testOnCreate=false, testOnBorrow=false, testOnReturn=false, testWhileIdle=true, timeBetweenEvictionRunsMillis=60000, numTestsPerEvictionRun=-1, minEvictableIdleTimeMillis=180000, softMinEvictableIdleTimeMillis=-1, evictionPolicy=org.apache.commons.pool2.impl.DefaultEvictionPolicy@1a05ff8e, closeLock=java.lang.Object@251e2f4a, closed=false, evictionLock=java.lang.Object@1abea1ed, evictor=org.apache.commons.pool2.impl.BaseGenericObjectPool$Evictor@6f5288c5, evictionIterator=null, factoryClassLoader=java.lang.ref.WeakReference@5a9ef32e, oname=org.apache.commons.pool2:type=GenericKeyedObjectPool,name=pool, creationStackTrace=java.lang.Exception
	at org.apache.commons.pool2.impl.BaseGenericObjectPool.<init>(BaseGenericObjectPool.java:142)
	at org.apache.commons.pool2.impl.GenericKeyedObjectPool.<init>(GenericKeyedObjectPool.java:105)
	at com.github.tobato.fastdfs.conn.FdfsConnectionPool.<init>(FdfsConnectionPool.java:33)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:142)

解决这个问题需要在启动类上加一个注解 @EnableMBeanExport(registration = RegistrationPolicy.IGNORE_EXISTING)：

@SpringBootApplication
@EnableSwagger2
@EnableMBeanExport(registration = RegistrationPolicy.IGNORE_EXISTING)
@ComponentScan("com")
public class LearningApplication {

	public static void main(String[] args) {
		SpringApplication.run(LearningApplication.class, args);
	}
}

@EnableMBeanExport解决JMX重复注册问题,不要再配置 spring.jmx.enabled=false，以免影响SpringBoot默认的JMX监控。

application.yml参数配置：

# ===================================================================
# 分布式文件系统FDFS配置
# ===================================================================
fdfs:
  so-timeout: 1501
  connect-timeout: 601 
  thumb-image:             #缩略图生成参数
    width: 150
    height: 150
  tracker-list:            #TrackerList参数,支持多个
    - 192.168.1.1:22122

上传下载：

import cn.hutool.core.io.FileUtil;
import com.github.tobato.fastdfs.domain.StorePath;
import com.github.tobato.fastdfs.proto.storage.DownloadByteArray;
import com.github.tobato.fastdfs.service.FastFileStorageClient;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

@RestController
@RequestMapping("/file")
public class FileController {

    @Resource
    private FastFileStorageClient fastFileStorageClient;

    @PostMapping("/upload")
    public String save(MultipartFile multipartFile) throws IOException {
        byte[] bytes = multipartFile.getBytes();
        InputStream inputStream = new ByteArrayInputStream(bytes);
        String extName = FileUtil.extName(multipartFile.getOriginalFilename());
        StorePath storePath = fastFileStorageClient.uploadFile(inputStream, bytes.length, extName, null);
        return storePath.getFullPath();
    }

    @PostMapping("/del")
    public String del(@RequestParam String uri) {
        StorePath storePath = fromUri(uri);
        fastFileStorageClient.deleteFile(storePath.getGroup(), storePath.getPath());
        return "删除成功";
    }

    /**
     * 从uri生成StorePath对象.
     */
    private StorePath fromUri(String uri) {
        String group = uri.replaceFirst("/.*$", "");
        String path = uri.replaceFirst("^.*?/", "");
        return new StorePath(group, path);
    }

    //下载
    public byte[] getBin(String fullPath) {
        try {
            StorePath storePath = fromUri(fullPath);
            String group = storePath.getGroup();
            String path = storePath.getPath();
            return fastFileStorageClient.downloadFile(group, path, new DownloadByteArray());
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}