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  • java开发的zimg客户端

    1、zimg的安装部署

    最开始的时候是下载zimg的源码安装的,由于zimg依赖项众多,没有安装成功,刚好那期间在学习docker,于是docker search zimg一下,惊奇的发现有zimg镜像。

    镜像名:iknow0612/zimg

    docker pull iknow0612/zimg

    运行zimg的方法(开发用,没有该配置,简单的做了图片存储位置的映射,重启后上传的图片还在。docker的实例名称很重要,同一主机的docker容器间通信最好用--link,IP有时候不太稳定)

    docker run -it -d -p 4869:4869 -v /home/liuzhijun/zimg/images:/zimg/bin/img --name guttv_zimg iknow0612/zimg sh app.sh

    2、java客户端代码

    package com.guttv.common.utils;
    
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.OutputStream;
    import java.net.HttpURLConnection;
    import java.net.ProtocolException;
    import java.net.URL;
    import java.net.URLConnection;
    import java.util.List;
    
    import javax.servlet.http.HttpServletRequest;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.web.multipart.MultipartFile;
    import org.springframework.web.multipart.MultipartHttpServletRequest;
    
    import com.google.gson.Gson;
    import com.guttv.common.utils.ZimgClient.ZimgResult;
    
    public class ZimgClient {
        public static String zimgUrl = "http://192.168.1.221:4869/";
        public static String zimgShareUrl = "http://192.168.1.221:4869/";
        public static String tmpPath = "/var/guttv/logs/tmp";
        protected Logger logger = LoggerFactory.getLogger(getClass());
    
        public static void main(String[] args) {
            // 从文件上传图片
            ZimgResult ret0 = new ZimgClient()
                    .uploadImg("/var/guttv/logs/tmp/gophercolor.png");
            System.out.println(ret0.isRet() + "
    " + ret0.getImageUrl());
            // 从URL上传图片
            ZimgResult ret = new ZimgClient()
                    .uploadImgFromUrl("http://creatives.ftchinese.com/ads/beijing/201509/20150914_cartier_33660.gif");
            System.out.println(ret.isRet() + "
    " + ret.getImageUrl());
            // Send("http://192.168.1.221:4869/upload",
            // "c:/4c422e03jw1ejoqm5ghm0j20nl0fb76x.jpg", "jpg");
        }
    
        /**
         * 从页面提交图片,上传到zimg
         * 
         * @param request
         * @param fileTag
         * @return
         */
        public String uploadImgToZimg(HttpServletRequest request, String fileTag) {
            String imgUrl = "";
            MultipartHttpServletRequest mhs = (MultipartHttpServletRequest) request;
            List<MultipartFile> files = mhs.getFiles(fileTag);
            if (files != null && files.size() > 0) {
                // 上传到图片服务器
                MultipartFile f = files.get(0);
                if (f.getSize() == 0)
                    return "";
                String tmpFileName = ZimgClient.tmpPath + "/"
                        + f.getOriginalFilename();
                // mkdir("./tmp")
                File tmp = new File(ZimgClient.tmpPath);
                tmp.mkdir();
                tmp = new File(tmpFileName);
                try {
                    // tmp.delete();
                    f.transferTo(tmp);
                } catch (Exception e) {
                    e.printStackTrace();
                }
    
                ZimgResult ret = this.uploadImg(tmpFileName);
                logger.debug(new Gson().toJson(ret));
                if (ret != null && ret.isRet())
                    imgUrl = ret.getImageUrl();
    
                // 删除文件
                if (tmp != null) {
                    tmp.setWritable(true);
                    // try {
                    // new FileOutputStream(tmp).close();
                    // } catch (Exception e) {
                    // e.printStackTrace();
                    // }
                    System.gc();// java'bug,must be gc before delete
                    tmp.delete();
                }
            }
    
            return imgUrl;
        }
    
        /**
         * 指定文件名,上传到zimg
         * 
         * @param fileName
         * @return
         */
        public ZimgResult uploadImg(String fileName) {
            String ext = "jpeg";
            int inx = fileName.lastIndexOf(".");
            if (inx > 0)
                ext = fileName.substring(inx + 1);
            String resp = this.Send(ZimgClient.zimgUrl + "upload", fileName, ext);
            return new Gson().fromJson(resp, ZimgResult.class);
        }
    
        public ZimgResult uploadImgFromUrl(String url) {
            String resp = this.SendFromUrl(url);
            return new Gson().fromJson(resp, ZimgResult.class);
        }
    
        /**
         * 从指定的URL下载图片并上传到zimg服务器
         * 
         * @param zimgUrl
         * @param imgUrl
         * @return
         */
        protected String SendFromUrl(String imgUrl) {
    
            // 设置文件类型默认值
            String ext = "jpeg";
            String respXML = "";
            try {
                // 获得connection对象
                logger.debug("zimg server url:" + ZimgClient.zimgUrl);
                URL zimgUL = new URL(ZimgClient.zimgUrl);
                URLConnection zimgConnection = zimgUL.openConnection();
                zimgConnection.setReadTimeout(50000);
                zimgConnection.setConnectTimeout(25000);
                HttpURLConnection zimgUC = (HttpURLConnection) zimgConnection;
    
                // 设置HTTP协议的消息头
                logger.debug("zimg set header");
                zimgUC.setRequestMethod("POST");
                zimgUC.setRequestProperty("Connection", "Keep-Alive");
                zimgUC.setRequestProperty("Cache-Control", "no-cache");
                zimgUC.setRequestProperty("Content-Type", ext.toLowerCase());// "jpeg");//
                zimgUC.setRequestProperty("COOKIE", "william");
                zimgUC.setDoOutput(true);
                zimgUC.setDoInput(true);
    
                logger.debug("zimg connect server.");
                // 与建立服务器连接
                zimgUC.connect();
                // 设置传输模式为二进制
                logger.debug("zimg upload image in binary.");
                OutputStream om = zimgUC.getOutputStream();
                // 循环读取图片,发送到zimg服务器
    
                ext = this.writeImage(imgUrl, om);
                logger.debug("image type=" + ext);
                // byte[] buf = new byte[8192];
                // while (true) {
                // int len = in.read(buf);
                // if (len <= 0)
                // break;
                // om.write(buf, 0, len);
                // }
    
                // 到开输入(返回信息)流
                InputStreamReader im = new InputStreamReader(
                        zimgUC.getInputStream(), "UTF-8");
                // 循环读取,知道结束,获取返回信息
                logger.debug("zimg get response text.");
                char[] bb = new char[8192];
                while (true) {
                    int length = im.read(bb);
                    if (length == -1)
                        break;
                    char[] bc = new char[length];
                    for (int i = 0; i < length; i++)
                        bc[i] = bb[i];
                    respXML += new String(bc);
                }
                logger.debug("zimg response:" + respXML);
                // 关闭上下行
                im.close();
                zimgUC.disconnect();
            } catch (Exception e) {
                logger.debug("zimg exception :" + e.getMessage());
                e.printStackTrace();
            }
    
            return respXML;
    
        }
    
        /**
         * 返货图片类型
         * 
         * @param data
         * @return
         */
        protected String getImageType(byte[] data) {
            String type = null;
            // Png test:
            if (data[1] == 'P' && data[2] == 'N' && data[3] == 'G') {
                type = "PNG";
                return type;
            }
            // Gif test:
            if (data[0] == 'G' && data[1] == 'I' && data[2] == 'F') {
                type = "GIF";
                return type;
            }
            // JPG test:
            if (data[6] == 'J' && data[7] == 'F' && data[8] == 'I'
                    && data[9] == 'F') {
                type = "JPG";
                return type;
            }
            return type;
        }
    
        /**
         * 获取URL的输入流
         * 
         * @param imgUrl
         * @return
         */
        private String writeImage(String imgUrl, OutputStream om) {
            long totalBytes = 0;
            String imgType = "jpeg";
            try {
                // 获得connection对象
                URL imgUL = new URL(imgUrl);
                URLConnection imgConnection = imgUL.openConnection();
                imgConnection.setReadTimeout(50000);
                imgConnection.setConnectTimeout(25000);
                HttpURLConnection imgUC = (HttpURLConnection) imgConnection;
    
                // 设置HTTP协议的消息头
                logger.debug("set header");
                imgUC.setRequestMethod("GET");
                imgUC.setRequestProperty("Connection", "Keep-Alive");
                imgUC.setRequestProperty("Cache-Control", "no-cache");
                // imgUC.setRequestProperty("Content-Type", ext.toLowerCase());//
                // "jpeg");//
                imgUC.setRequestProperty("COOKIE", "GostLiu程序员老刘");
                imgUC.setDoOutput(true);
                imgUC.setDoInput(true);
                InputStream in = imgUC.getInputStream();
    
                byte[] buf = new byte[8192];
                boolean GotType = false;
                while (true) {
                    int len = in.read(buf);
                    if (len <= 0)
                        break;
                    if (!GotType) {
                        imgType = this.getImageType(buf);
                        GotType = true;
                    }
                    totalBytes += len;
                    om.write(buf, 0, len);
                }
                in.close();
    
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                return "";
            }
            if (totalBytes > 0)
                return imgType;
            else
                return "";
        }
    
        /**
         * 将图片文件上传到zimg服务器
         * 
         * @param url
         * @param fileName
         * @param ext
         * @return
         */
        protected String Send(String url, String fileName, String ext) {
    
            if (ext.toLowerCase().compareTo("jpg") == 0)
                ext = "jpeg";
            String respXML = "";
            try {
                // 获得connection对象
                logger.debug("zimg server url:" + url);
                URL ul = new URL(url);
                URLConnection connection = ul.openConnection();
                connection.setReadTimeout(50000);
                connection.setConnectTimeout(25000);
                HttpURLConnection uc = (HttpURLConnection) connection;
    
                // 设置HTTP协议的消息头
                logger.debug("zimg set header");
                uc.setRequestMethod("POST");
                uc.setRequestProperty("Connection", "Keep-Alive");
                uc.setRequestProperty("Cache-Control", "no-cache");
                uc.setRequestProperty("Content-Type", ext.toLowerCase());// "jpeg");//
                uc.setRequestProperty("COOKIE", "william");
                uc.setDoOutput(true);
                uc.setDoInput(true);
    
                logger.debug("zimg connect server.");
                // 与建立服务器连接
                uc.connect();
                // 设置传输模式为二进制
                logger.debug("zimg upload image in binary.");
                OutputStream om = uc.getOutputStream();
                // 循环读取图片,发送到zimg服务器
                FileInputStream in = new FileInputStream(fileName);
                byte[] buf = new byte[8192];
                while (true) {
                    int len = in.read(buf);
                    if (len <= 0)
                        break;
                    om.write(buf, 0, len);
                }
    
                // 到开输入(返回信息)流
                InputStreamReader im = new InputStreamReader(uc.getInputStream(),
                        "UTF-8");
                // 循环读取,知道结束,获取返回信息
                logger.debug("zimg get response text.");
                char[] bb = new char[8192];
                while (true) {
                    int length = im.read(bb);
                    if (length == -1)
                        break;
                    char[] bc = new char[length];
                    for (int i = 0; i < length; i++)
                        bc[i] = bb[i];
                    respXML += new String(bc);
                }
                logger.debug("zimg response:" + respXML);
                // 关闭上下行
                im.close();
                uc.disconnect();
            } catch (Exception e) {
                logger.debug("zimg exception :" + e.getMessage());
                e.printStackTrace();
            }
    
            return respXML;
    
        }
    
        /********** zimg 服务器返回消息定义 ***********************************/
        public class ZimgError {
            private int code;
            private String message;
    
            public int getCode() {
                return code;
            }
    
            public void setCode(int code) {
                this.code = code;
            }
    
            public String getMessage() {
                return message;
            }
    
            public void setMessage(String message) {
                this.message = message;
            }
    
        }
    
        public class ZimgInfo {
            private String md5;
    
            public String getMd5() {
                return md5;
            }
    
            public void setMd5(String md5) {
                this.md5 = md5;
            }
    
            private int size;
    
            public int getSize() {
                return size;
            }
    
            public void setSize(int size) {
                this.size = size;
            }
        }
    
        public class ZimgResult {
            private boolean ret;
            private ZimgInfo info;
            private ZimgError error;
    
            public ZimgError getError() {
                return error;
            }
    
            public void setError(ZimgError error) {
                this.error = error;
            }
    
            public String getImageUrl() {
                if (this.isRet()) {
                    return ZimgClient.zimgShareUrl + this.info.getMd5();
                }
                return "";
            }
    
            public boolean isRet() {
                return ret;
            }
    
            public void setRet(boolean ret) {
                this.ret = ret;
            }
    
            public ZimgInfo getInfo() {
                return info;
            }
    
            public void setInfo(ZimgInfo info) {
                this.info = info;
            }
    
        }
    }

    3、用法

    该类提供了三个用法:

    a、从文件上传:

     ZimgResult ret0 = new ZimgClient()
                    .uploadImg("/var/guttv/logs/tmp/gophercolor.png");

    b、从url直接上传

    ZimgResult ret = new ZimgClient()
                    .uploadImgFromUrl("http://creatives.ftchinese.com/ads/beijing/201509/20150914_cartier_33660.gif");

    c、从页面提交上传,uploadImgToZimg

    包含两个参数HttpServletRequest request和String fileTag,页面上要存在一个type是file类型的input标签,其name的值就是这里的fileTag,即下面例子中的posterFile。

    本例中使用了spring的MultipartHttpServletRequest,因此调用者要支持spring。

    String imgUrl = new ZimgClient().uploadImgToZimg(request,
                        "posterFile");
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  • 原文地址:https://www.cnblogs.com/liughost/p/4917350.html
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