FastDFS的简单使用

准备:一台虚拟机,已经安装了fastDFS,此虚拟机将tracker_server和storage_server安装在了一起。ip为192.168.25.133

第一部分 按照步骤一步一步实现

第一步、导入fastDFS的坐标

        <dependency>
            <groupId>org.csource.fastdfs</groupId>
            <artifactId>fastdfs</artifactId>
            <version>1.2</version>
        </dependency>
    <!--文件上传组件-->
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.1</version>
        </dependency> 

第二步、编写配置文件

fastDFS的配置文件fast_client.conf全文如下(resources/properties/fdfs_client.conf)

#把此文件放入工程中所需的模块的resources/config目录下,通过FastDFSClient工具类的构造方法加载即可,一般只需修改tracker_server
#使用举例,controller
#//获取从properties文件中定义的的tracker server的值
# @Value("${FILE_SERVER_URL}")
#    private String FILE_SERVER_URL;
#
#   @RequestMapping("/uploadFile")
#    public Result uploadFile(MultipartFile file) {
#        try {
#            String originalFilename = file.getOriginalFilename();
#            String extName = originalFilename.substring(originalFilename.indexOf(".") + 1);
#
#            FastDFSClient fastDFSClient = new FastDFSClient("classpath:/config/fdfs_client.conf");
#            String s = fastDFSClient.uploadFile(file.getBytes(), extName);
#            return new Result(true, FILE_SERVER_URL + s);
#        } catch (Exception e) {
#            return new Result(false, "upload failed!");
#        }
#    }
# connect timeout in seconds
# default value is 30s
connect_timeout=30

# network timeout in seconds
# default value is 30s
network_timeout=60

# the base path to store log files
base_path=/home/fastdfs

# tracker_server can ocur more than once, and tracker_server format is
#  "host:port", host can be hostname or ip address
tracker_server=192.168.25.133:22122

#standard log level as syslog, case insensitive, value list:
### emerg for emergency
### alert
### crit for critical
### error
### warn for warning
### notice
### info
### debug
log_level=info

# if use connection pool
# default value is false
# since V4.05
use_connection_pool = false

# connections whose the idle time exceeds this time will be closed
# unit: second
# default value is 3600
# since V4.05
connection_pool_max_idle_time = 3600

# if load FastDFS parameters from tracker server
# since V4.05
# default value is false
load_fdfs_parameters_from_tracker=false

# if use storage ID instead of IP address
# same as tracker.conf
# valid only when load_fdfs_parameters_from_tracker is false
# default value is false
# since V4.05
use_storage_id = false

# specify storage ids filename, can use relative or absolute path
# same as tracker.conf
# valid only when load_fdfs_parameters_from_tracker is false
# since V4.05
storage_ids_filename = storage_ids.conf


#HTTP settings
http.tracker_server_port=80

#use "#include" directive to include HTTP other settiongs
##include http.conf

 

将上方的tracker_server的属性更改为自己的主机ip【我的是192.168.25.133:22122】

# tracker_server can ocur more than once, and tracker_server format is
# "host:port", host can be hostname or ip address,修改成自己tracker_server的ip地址和端口号,默认22122
tracker_server=192.168.25.133:22122

第三步、代码测试(原生代码,没有使用自定义工具类FastDFSClient

将本地目录的F:\\image\\01.jpg文件上传至服务器

public class fastDFSDemo {
    public static void main(String[] args) throws Exception {
        // 1、 加载配置文件, 配置文件中的内容就是 tracker 服务的地址。
        ClientGlobal.init("F:\\coding\\helloFastDFS\\src\\main\\resources\\fdfs_client.conf");
        // 2、 创建一个 TrackerClient 对象。 直接 new 一个。
        TrackerClient trackerClient=new TrackerClient();
        // 3、 使用 TrackerClient 对象创建连接, 获得一个 TrackerServer 对象。
        TrackerServer trackerServer = trackerClient.getConnection();
        // 4、 创建一个 StorageServer 的引用, 值为 null
        StorageServer storageServer=null;
        // 5、 创建一个 StorageClient 对象, 需要两个参数 TrackerServer 对象、 StorageServer的引用
        StorageClient1 storageClient1=new StorageClient1(trackerServer,storageServer);
        // 6、 使用 StorageClient 对象上传图片。
        String[] strings = storageClient1.upload_appender_file("F:\\image\\01.jpg","jpg", null);
        // 7、 返回数组。 包含组名和图片的路径。
        for (String string : strings) {
            System.out.println(string);
        }
    }
}

运行结果

group1
M00/00/00/wKgZhV0p3meEboMrAAAAAOo7as0657.jpg

第四步、访问该图片,测试结果

图片的加载是依赖于negix加载的,默认端口号80,访问路径如下
http://192.168.25.133/group1/M00/00/00/wKgZhV0p3AqESvEmAAAAAOo7as0348.jpg

第二部分 抽取出工具类,并通过spring在网页端上传实现

第一步、导入坐标

第二步、在springMVC中配置该框架的多部件解析器

不配置的话会在文件上传的时候抛出无法解析的异常。

    <!--文件上传的多媒体解析器  主要配置:限制文件大小  配置字符集编码-->
    <bean id="multipartResolver"
          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="defaultEncoding" value="UTF-8"></property>
        <!-- 设定文件上传的最大值 5MB, 5*1024*1024 -->
        <property name="maxUploadSize" value="5242880"></property>
    </bean>

第三步、将第一部分中的通用代码封装成fastDFS文件上传的工具类

import org.csource.common.NameValuePair;
import org.csource.fastdfs.ClientGlobal;
import org.csource.fastdfs.StorageClient1;
import org.csource.fastdfs.StorageServer;
import org.csource.fastdfs.TrackerClient;
import org.csource.fastdfs.TrackerServer;

public class FastDFSClient {

    private TrackerClient trackerClient = null;
    private TrackerServer trackerServer = null;
    private StorageServer storageServer = null;
    private StorageClient1 storageClient = null;
    
    public FastDFSClient(String conf) throws Exception {
        if (conf.contains("classpath:")) {
            conf = conf.replace("classpath:", this.getClass().getResource("/").getPath());
        }
        ClientGlobal.init(conf);
        trackerClient = new TrackerClient();
        trackerServer = trackerClient.getConnection();
        storageServer = null;
        storageClient = new StorageClient1(trackerServer, storageServer);
    }
    
    /**
     * 上传文件方法
     * <p>Title: uploadFile</p>
     * <p>Description: </p>
     * @param fileName 文件全路径
     * @param extName 文件扩展名,不包含(.)
     * @param metas 文件扩展信息
     * @return
     * @throws Exception
     */
    public String uploadFile(String fileName, String extName, NameValuePair[] metas) throws Exception {
        String result = storageClient.upload_file1(fileName, extName, metas);
        return result;
    }
    
    public String uploadFile(String fileName) throws Exception {
        return uploadFile(fileName, null, null);
    }
    
    public String uploadFile(String fileName, String extName) throws Exception {
        return uploadFile(fileName, extName, null);
    }
    
    /**
     * 上传文件方法
     * <p>Title: uploadFile</p>
     * <p>Description: </p>
     * @param fileContent 文件的内容,字节数组
     * @param extName 文件扩展名
     * @param metas 文件扩展信息
     * @return
     * @throws Exception
     */
    public String uploadFile(byte[] fileContent, String extName, NameValuePair[] metas) throws Exception {
        
        String result = storageClient.upload_file1(fileContent, extName, metas);
        return result;
    }
    
    public String uploadFile(byte[] fileContent) throws Exception {
        return uploadFile(fileContent, null, null);
    }
    
    public String uploadFile(byte[] fileContent, String extName) throws Exception {
        return uploadFile(fileContent, extName, null);
    }
}

第四步、编写SpringMVC的文件上传Controller,用于接收从网页发送的文件上传请求,我们起名为UpLoadController,返回的Result是一个自定义的工具类

@RestController
@RequestMapping("/upload")
public class UploadController {

    @Value("${FILE_SERVER_URL}")
    private String FILE_SERVER_URL;

    @RequestMapping("/uploadFile")
    public Result uploadFile(MultipartFile file) {
        try {

            String originalFilename = file.getOriginalFilename();
            String extName = originalFilename.substring(originalFilename.indexOf(".") + 1);

            FastDFSClient fastDFSClient = new FastDFSClient("classpath:/config/fdfs_client.conf");
            String s = fastDFSClient.uploadFile(file.getBytes(), extName);
            return new Result(true, FILE_SERVER_URL + s);
        } catch (Exception e) {
            return new Result(false, "upload failed!");
        }
    }
}

第五步、在配置SpringMVC中的配置文件,加载一个文件

<context:property-placeholder location="classpath:config/application.properties"/>

    <mvc:annotation-driven>
        <mvc:message-converters register-defaults="true">
            <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
                <property name="supportedMediaTypes" value="application/json"/>
                <property name="features">
                    <array>
                        <value>WriteMapNullValue</value>
                        <value>WriteDateUseDateFormat</value>
                    </array>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

第六步、编写上方加载的文件,该文件为tracker_server的主机信息文件application.properties

FILE_SERVER_URL=http://192.168.25.133/

第七步、编写前端界面,要求前端界面的请求表单form的方式method必须为post,加密类型enctype必须为multipart/data-form,必须有个buttom的type为file

 以angularJS为例实现前端文件上传的代码

前端页面

<input type="file" id="file" /><br/>
<
button ng-click="uploadFile()" class="btn btn-primary" type="button" >上传</button><br/>
<
img src="{{entity.pic}}" width="200px" height="100px">

controller中被调用的方法

    $scope.entity = {};

    $scope.uploadFile = function () {
        uploadService.uploadFile().success(
            function (response) {
                    $scope.entity.pic = response.message;
            }
        )
    }

uploadService中的方法

//服务层
app.service('uploadService',function($http){
            
    //文件上传
    this.uploadFile=function(){
        //基于angularjs结合html5(FormData)完成文件上传 <form>
        var formData = new FormData();
        //要基于定义的表单数据对象,获取页面选择的文件对象
        //参数一:与后台java代码接收文件对象的参数名一致
        //参数二:获取页面的文件对象  file.files[0]  file与<input type="file" id="file" />中的id保存一致
        formData.append("file",file.files[0]);

        return $http({
            url: "../upload/uploadFile.do",
            method:"post",
            data:formData,
            headers : {'Content-Type' : undefined}, //上传文件必须是这个类型,默认text/plain,相当于配置了enctype="multipart/form-data"
            transformRequest : angular.identity  //对整个表单进行二进制序列化
        });
    }
});

第八步、测试。

 

posted @ 2019-07-13 19:17  手握钢叉的猹  阅读(1662)  评论(0编辑  收藏  举报