HttpUploadFile模拟前台POST上传图片和后台获取上传图片并上传至服务器

来源：互联网发布：rbac java 实现编辑：程序博客网时间：2024/06/05 10:47

package dshui;import java.io.BufferedReader;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.HttpURLConnection;import java.net.URL;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import javax.activation.MimetypesFileTypeMap;/** * HttpUploadFile模拟POST上传图片 *  * @author Administrator * */public class HttpUploadFile {    public static void main(String[] args) {        testUploadImage();    }    /**     * 测试上传图片     */    public static void testUploadImage() {        String url = "http://127.0.0.1/uploadImage.do";        String fileName = "C:/Users/Administrator/Desktop/image/1.jpg";        Map<String, String> textMap = new HashMap<String, String>();// 上传内容        // 可以设置多个input的name，value        textMap.put("name", "testname");        textMap.put("type", "2");        // 设置file的name，路径        Map<String, String> fileMap = new HashMap<String, String>();// 上传图片        fileMap.put("upfile", fileName);        String contentType = "";// 上传类型，可为空        String ret = formUpload(url, textMap, fileMap, contentType);        System.out.println(ret);    }    /**     * 上传图片     *      * @param urlStr     *            上传地址     * @param textMap     *            文本集     * @param fileMap     *            图片集     * @param contentType     *            没有传入文件类型默认采用application/octet-stream     *            contentType非空采用filename匹配默认的图片类型     * @return 返回response数据     */    @SuppressWarnings("rawtypes")    public static String formUpload(String urlStr, Map<String, String> textMap, Map<String, String> fileMap,            String contentType) {        String res = "";        HttpURLConnection conn = null;        // boundary就是request头和上传文件内容的分隔符        String BOUNDARY = "---------------------------123821742118716";        try {            URL url = new URL(urlStr);            conn = (HttpURLConnection) url.openConnection();            conn.setConnectTimeout(5000);            conn.setReadTimeout(30000);            conn.setDoOutput(true);            conn.setDoInput(true);            conn.setUseCaches(false);            conn.setRequestMethod("POST");            conn.setRequestProperty("Connection", "Keep-Alive");            conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");            conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);            OutputStream out = new DataOutputStream(conn.getOutputStream());            // text            if (textMap != null) {                StringBuffer strBuf = new StringBuffer();                Iterator iter = textMap.entrySet().iterator();                while (iter.hasNext()) {                    Map.Entry entry = (Map.Entry) iter.next();                    String inputName = (String) entry.getKey();                    String inputValue = (String) entry.getValue();                    if (inputValue == null) {                        continue;                    }                    strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");                    strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"\r\n\r\n");                    strBuf.append(inputValue);                }                out.write(strBuf.toString().getBytes());            }            // file            if (fileMap != null) {                Iterator iter = fileMap.entrySet().iterator();                while (iter.hasNext()) {                    Map.Entry entry = (Map.Entry) iter.next();                    String inputName = (String) entry.getKey();                    String inputValue = (String) entry.getValue();                    if (inputValue == null) {                        continue;                    }                    File file = new File(inputValue);                    String filename = file.getName();                    // 没有传入文件类型，同时根据文件获取不到类型，默认采用application/octet-stream                    contentType = new MimetypesFileTypeMap().getContentType(file);                    // contentType非空采用filename匹配默认的图片类型                    if (!"".equals(contentType)) {                        if (filename.endsWith(".png")) {                            contentType = "image/png";                        } else if (filename.endsWith(".jpg") || filename.endsWith(".jpeg")                                || filename.endsWith(".jpe")) {                            contentType = "image/jpeg";                        } else if (filename.endsWith(".gif")) {                            contentType = "image/gif";                        } else if (filename.endsWith(".ico")) {                            contentType = "image/image/x-icon";                        }                    }                    if (contentType == null || "".equals(contentType)) {                        contentType = "application/octet-stream";                    }                    StringBuffer strBuf = new StringBuffer();                    strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");                    strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"; filename=\"" + filename                            + "\"\r\n");                    strBuf.append("Content-Type:" + contentType + "\r\n\r\n");                    out.write(strBuf.toString().getBytes());                    DataInputStream in = new DataInputStream(new FileInputStream(file));                    int bytes = 0;                    byte[] bufferOut = new byte[1024];                    while ((bytes = in.read(bufferOut)) != -1) {                        out.write(bufferOut, 0, bytes);                    }                    in.close();                }            }            byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();            out.write(endData);            out.flush();            out.close();            // 读取返回数据            StringBuffer strBuf = new StringBuffer();            BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));            String line = null;            while ((line = reader.readLine()) != null) {                strBuf.append(line).append("\n");            }            res = strBuf.toString();            reader.close();            reader = null;        } catch (Exception e) {            System.out.println("发送POST请求出错。" + urlStr);            e.printStackTrace();        } finally {            if (conn != null) {                conn.disconnect();                conn = null;            }        }        return res;    }}

package com.iit.core.util;import com.aliyun.oss.ClientException;import com.aliyun.oss.OSSClient;import com.aliyun.oss.OSSException;import com.aliyun.oss.model.PutObjectRequest;import com.dshui.oms.entity.Picture;import com.iit.core.AppConfig;import com.iit.core.Constants;import com.iit.core.Convert;import org.apache.commons.fileupload.FileItem;import org.apache.commons.fileupload.FileUploadBase.SizeLimitExceededException;import org.apache.commons.fileupload.FileUploadException;import org.apache.commons.fileupload.disk.DiskFileItemFactory;import org.apache.commons.fileupload.servlet.ServletFileUpload;import javax.servlet.ServletException;import javax.servlet.ServletOutputStream;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.File;import java.io.IOException;import java.util.Date;import java.util.Iterator;import java.util.List;import java.util.UUID;public class UploadImage extends HttpServlet {    private static final long serialVersionUID = 1L;    public static String getFilePath() {        return "file/" + Convert.toShortYMDWithNoSplit(new Date()) + "/";    }    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        processRequest(request, response);    }    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        processRequest(request, response);    }    private void processRequest(HttpServletRequest request, HttpServletResponse response) throws IOException {        response.setCharacterEncoding("UTF-8");        ServletOutputStream os = response.getOutputStream();        /*        *    oos需要的属性        * */         String endpoint = "http://oss-cn-beijing.aliyuncs.com";         String accessKeyId = "ytkBktFF0pPFRKh2";         String accessKeySecret = "EHOxUevFMBIxv6qBaVCT9pOcybZykt";         String bucketName = "goods-images";        OSSClient client = new OSSClient(endpoint, accessKeyId, accessKeySecret);        System.out.println(ServletFileUpload.isMultipartContent(request));        // 获得文件保存路径    /*  String filePath = getFilePath();        String path = getTempPath(filePath);        */        // 临时文件目录      File temp = new File("/usr/local/temp/upload/");        if (!temp.exists())            temp.mkdirs();        // 实例化一个硬盘文件工厂,用来配置上传组件ServletFileUpload        DiskFileItemFactory factory = new DiskFileItemFactory(5 * 1024 * 1024, temp);        // 用以上工厂实例化上传组件        ServletFileUpload sfu = new ServletFileUpload(factory);        // 单个文件最大值        sfu.setSizeMax(5* 1024 * 1024);        List fileList = null;        try {            fileList = sfu.parseRequest(request);        } catch (FileUploadException e) {            if (e instanceof SizeLimitExceededException) {                os.write("文件太大了".getBytes("UTF-8"));                os.close();                return;            } else {                os.write("未知异常".getBytes("UTF-8"));                os.close();                return;            }        }        if (fileList == null || fileList.size() == 0) {            os.write("请上传文件".getBytes("UTF-8"));            os.close();            return;        }        String fileNames = null;        Iterator iter = fileList.iterator();        while (iter.hasNext()) {            FileItem item = (FileItem) iter.next();            if (!item.isFormField()) {                String fileName = item.getName();                if(fileName.lastIndexOf('.') == -1){                    return;                }                String fileExt = fileName.substring(fileName.lastIndexOf('.'));                if (!Picture.ALLOW_EXT.contains(fileExt.toLowerCase())) {                    os.write("文件类型错误".getBytes("UTF-8"));                    os.close();                    return;                }                fileName = getFileName() + fileExt;                try {                   // 这里将图片上传到oos服务器上面服务器上面                    File file = File.createTempFile(fileName, fileExt);                    file.deleteOnExit();                    item.write(file);                    client.putObject(new PutObjectRequest(bucketName, fileName,file));                    file.delete();                    //item.write(new File(path, fileName));                } catch (OSSException oe) {                    System.out.println("Caught an OSSException, which means your request made it to OSS, "                            + "but was rejected with an error response for some reason.");                    System.out.println("Error Message: " + oe.getErrorCode());                    System.out.println("Error Code:       " + oe.getErrorCode());                    System.out.println("Request ID:      " + oe.getRequestId());                    System.out.println("Host ID:           " + oe.getHostId());                } catch (ClientException ce) {                    System.out.println("Caught an ClientException, which means the client encountered "                            + "a serious internal problem while trying to communicate with OSS, "                            + "such as not being able to access the network.");                    System.out.println("Error Message: " + ce.getMessage());                } catch (Exception e) {                    e.printStackTrace();                    continue;                } finally {                    client.shutdown();                }                if (fileNames == null)                    fileNames = fileName;                else                    fileNames += "," + fileName;            }        }        os.write((Constants.SUCCESS + "|" + fileNames).getBytes("UTF-8"));        os.close();        return;    }    public static String getTempPath(String filePath) {        String projectName = AppConfig.PROJECT_NAME;        String ret = AppConfig.getResourceHome();        String contextPath = AppConfig.getContextPath();        if (!contextPath.equals(projectName) && ret.contains(projectName)) {            ret = ret.substring(0, ret.indexOf(projectName) - 1);        }        String path = ret + AppConfig.RESOURCE_APP_ROOT + filePath;        // 文件上传目录        File sourceFile = new File(path);        if (!sourceFile.exists()) {            sourceFile.mkdirs();        }        return path;    }    /**     * 获取文件名     * UUID 拼接 8位日期     *     * 如需获得原图，可将图片名称截后六位即图片创建日期，然后到file文件夹下根据日期即可找到     * @return     */    public static String getFileName(){        String uuid = UUID.randomUUID().toString().replace("-", "");        String time = Convert.toShortYMDWithNoSplit(new Date());        return uuid + time;    }}

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