Java模拟表单post提交，可支持图片上传，post图片上传,/** * 模拟

Java模拟表单post提交，可支持图片上传，post图片上传,/** * 模拟

/**     * 模拟表单post     *     * @param textMap 文本域     * @param fileMap 文件     *     */    public static String postForm(String urlStr, Map<String, String> textMap, Map<String, String> fileMap) throws IOException {        String res = "";        HttpURLConnection conn = null;        InputStream inS = null;        OutputStream out = null;        String BOUNDARY = "---------------------------123821742118716"; //boundary就是request头和上传文件内容的分隔符        try {            URL url = new URL(urlStr);            conn = (HttpURLConnection) url.openConnection();            if (conn instanceof HttpsURLConnection) {                ((HttpsURLConnection) conn).setSSLSocketFactory(sslSocketFactory);                ((HttpsURLConnection) conn).setHostnameVerifier(trustAnyHostnameVerifier);            }            conn.setConnectTimeout(19000);            conn.setReadTimeout(19000);            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);            out = new DataOutputStream(conn.getOutputStream());            // text value            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();                    String contentType = new MimetypesFileTypeMap().getContentType(file);                    if (filename.endsWith(".png")) {                        contentType = "image/png";                    } else if (filename.endsWith(".gif")) {                        contentType = "image/gif";                    } else if (filename.endsWith(".jpg")) {                        contentType = "image/jpeg";                    }                    if (contentType == null || contentType.equals("")) {                        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);                    }                }            }            byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();            out.write(endData);            out.flush();            // 读取返回数据            StringBuffer strBuf = new StringBuffer();            inS = conn.getInputStream();            BufferedReader reader = new BufferedReader(new InputStreamReader(inS));            String line = null;            while ((line = reader.readLine()) != null) {                strBuf.append(line).append("\n");            }            res = strBuf.toString();            reader.close();            reader = null;        } catch (Exception e) {            e.printStackTrace();        } finally {            if (out != null) {                out.close();            }            if (inS != null) {                inS.close();            }            if (conn != null) {                conn.disconnect();                conn = null;            }        }        return res;    }