fastdfs 上传图片完整版

2022-11-28 14:20:43

1、jsp文件

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

    <title>上传图片</title>

    <script type="text/javascript">

        //上传图片

        function uploadPic()

        {

            //异步上传  jquery.form.js插件

            //使用js模拟表单异步上传

            var options = {

                url : "/upload/uploadPic.do",

                type : "POST",

                dataType : "json",

                success : function(data){

                    //data.url

                    if(undefined != data.url && null != data.url)

                    {

                        //将img标签的src属性值设为fastDfs服务器返回的url

                        $("#imgSrc").attr("src", data.url);

                    }

                }

            };

            $("#jvForm").ajaxSubmit(options);

        }

    </script>

</head>

    <body>

        <div class="body-box" style="float:right">

            <form id="jvForm" action="o_save.shtml" method="post">

                <input type="hidden" name="id" value="${bran.id }"/>

                <table cellspacing="1" cellpadding="2" width="100%" border="0" class="pn-ftable">

                    <tbody>

                        <tr>

                            <td width="20%" class="pn-flabel pn-flabel-h">

                                <span class="pn-frequired">*</span>

                                上传图片(90x150尺寸):</td>

                            <td width="80%" class="pn-fcontent">

                                注:该尺寸图片必须为90x150。

                            </td>

                        </tr>

                        <tr>

                            <td width="20%" class="pn-flabel pn-flabel-h"></td>

                            <td width="80%" class="pn-fcontent">

                                <img width="100" height="100" id="imgSrc"/>

                         <input type="file" name="pic" onchange="uploadPic()"/>

                            </td>

                        </tr>

                    </tbody>

                </table>

            </form>

        </div>

    </body>

</html>

2、Controller

import javax.servlet.http.HttpServletResponse;

import org.json.JSONObject;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.multipart.MultipartFile;import cn.itcast.core.service.product.UploadService;

@Controller

public class UploadController

{

    @Autowired

    private UploadService uploadService;

    //上传单张图片

    @RequestMapping(value = "/upload/uploadPic.do")

    public void toEdit(@RequestParam(required = false) MultipartFile pic,

            HttpServletResponse response)

    {

        System.out.println(pic.getOriginalFilename());

        try

        {

            String name = pic.getOriginalFilename(); //文件名

            long size = pic.getSize(); //文件大小

            // group1/M00/00/00/wKisFFpBG9eAHaQvAAAWKd1hQR4158_big.jpg

            String path = uploadService.uploadPic(pic.getBytes(), name, size);

            String imageUrl = "http://192.168.172.20/"; //tracker的服务器的URL，注意后面需要加/
　　　　　　　String url = imageUrl + path; 

            JSONObject json = new JSONObject(); //注意包路径

            json.put("url", url);

            json.put("path", path);

            //json

            response.setContentType("application/json;charset=UTF-8");

            response.getWriter().write(json.toString()); //返回数据

        }

        catch (Exception e)

        {

            e.printStackTrace();

        }

    }

}

3、Service文件

import org.springframework.stereotype.Service;

import cn.itcast.common.fdfs.FastDfsUtils;

@Service("uploadService")

public class UploadServiceImpl implements UploadService

{

    @Override

    public String uploadPic(byte[] pic, String name, long size) throws Exception

    {

        return FastDfsUtils.uploadPic(pic, name, size);

    }

}

4、fastdfs的工具类

import org.apache.commons.io.FilenameUtils;

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;

import org.springframework.core.io.ClassPathResource;

/*

 * 连接fastdfs, 上传图片

 * 返回上传的路径, 例如: group1/M00/00/00/wKisFFpBG9eAHaQvAAAWKd1hQR4158_big.jpg

 */

public class FastDfsUtils

{

    //上传图片

    public static String uploadPic(byte[] pic, String name, long size) throws Exception

    {

        //读取配置文件

        ClassPathResource resource = new ClassPathResource("fdfs_client.conf"); //从classpath路径下读取文件

        ClientGlobal.init(resource.getClassLoader().getResource("fdfs_client.conf").getPath());

        //连接tracker的客户端

        TrackerClient trackerClient = new TrackerClient();

        TrackerServer trackerServer = trackerClient.getConnection(); 

        //连接storage的客户端

        StorageServer storageServer = null;

        StorageClient1 storageClient1 = new StorageClient1(trackerServer, storageServer);

        //上传图片

        String ext = FilenameUtils.getExtension(name);  //获取扩展名

        NameValuePair[] metaArr = new NameValuePair[3]; //描述信息

        metaArr[0] = new NameValuePair("fileName", name);

        metaArr[1] = new NameValuePair("fileExt", ext);

        metaArr[2] = new NameValuePair("fileSize", String.valueOf(size));

        String path = storageClient1.upload_file1(pic, ext, metaArr); //返回存储的文件路径

        return path;

    }

}

如下是ajax请求的响应消息：

码农公寓

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