Java http请求(二) - 文件下传工具

Java http请求(二) ---- 文件上传工具

public class FormFile { // 上传文件的数据 private byte[] data; private InputStream inStream; // 文件名称 private String filename; // 表单名称 private String formname; // 内容类型 private String contentType = "application/octet-stream"; public FormFile(String filename, byte[] data, String formname, String contentType) { this.data = data; this.filename = filename; this.formname = formname; if (contentType != null) { this.contentType = contentType; } } public FormFile(String filename, InputStream inStream, String formname, String contentType) { this.filename = filename; this.formname = formname; this.inStream = inStream; if (contentType != null) { this.contentType = contentType; } } public byte[] getData() { return data; } public void setData(byte[] data) { this.data = data; } public InputStream getInStream() { return inStream; } public void setInStream(InputStream inStream) { this.inStream = inStream; } public String getFilename() { return filename; } public void setFilename(String filename) { this.filename = filename; } public String getFormname() { return formname; } public void setFormname(String formname) { this.formname = formname; } public String getContentType() { return contentType; } public void setContentType(String contentType) { this.contentType = contentType; } }

?

?

 public class HttpUploadRequester {    /**     * 直接通过HTTP协议提交数据到服务器,实现如下面表单提交功能: <FORM METHOD=POST    * ACTION="http://192.168.0.200:8080/ssi/fileload/test.do"      * enctype="multipart/form-data"> <INPUT TYPE="text" NAME="name"> <INPUT      * TYPE="text" NAME="id"> <input type="file" name="imagefile"/> <input      * type="file" name="zip"/> </FORM>    *      * @param actionUrl      *            上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，       *            你可以使用http://192.168.1.10:8080这样的路径测试)       * @param params      *            请求参数 key为参数名,value为参数值       * @param file       *            上传文件       */      // http协议中分割符，随便定义      private static final String HTTP_BOUNDARY = "---------9dx5a2d578c2";      private static final String MULTIPART_FORM_DATA = "multipart/form-data";      private static final String LINE_ENTER = "\r\n"; // 换行 回车      private static final int RESPONSE_OK = 200;       public static String post(String urlPath, Map<String, String> params,             FormFile[] formFiles) {         try {              URL url = new URL(urlPath);              HttpURLConnection conn = (HttpURLConnection) url.openConnection();              conn.setRequestMethod("POST");              conn.setReadTimeout(5 * 1000);              conn.setDoOutput(true); // 发送POST请求， 必须设置允许输出              conn.setUseCaches(false);             conn.setRequestProperty("Connection", "Keep-Alive"); // 维持长链接             conn.setRequestProperty("Charset", "UTF-8");             conn.setRequestProperty("Content-Type", MULTIPART_FORM_DATA                     + "; boundary=" + HTTP_BOUNDARY);            StringBuilder formItemData = new StringBuilder();             // 构建 表单字段内容           for (Map.Entry<String, String> entry : params.entrySet()) {                 formItemData.append("--");                 formItemData.append(HTTP_BOUNDARY);                 formItemData.append(LINE_ENTER);                formItemData.append("Content-Disposition: form-data; name=""                       + entry.getKey() + ""\r\n\r\n");                 formItemData.append(entry.getValue());                 formItemData.append(LINE_ENTER);            }             DataOutputStream outStream = new DataOutputStream(                   conn.getOutputStream());            // 发送表单字段内容到服务器             outStream.write(formItemData.toString().getBytes());              // 发送上传文件数据           for (FormFile fileData : formFiles) {                 StringBuilder fileSplit = new StringBuilder();                 fileSplit.append("--");                 fileSplit.append(HTTP_BOUNDARY);                 fileSplit.append(LINE_ENTER);                fileSplit.append("Content-Disposition: form-data;name=""                        + fileData.getFormname() + "";filename=""                        + fileData.getFilename() + ""\r\n");                fileSplit.append("Content-Type:" + fileData.getContentType()                         + LINE_ENTER + LINE_ENTER);                 outStream.write(fileSplit.toString().getBytes());                 if (fileData.getInStream() != null) {                     byte[] buffer = new byte[1024];                     int length = 0;                     while ((length = fileData.getInStream().read()) != -1) {                        outStream.write(buffer, 0, length);                     }                    fileData.getInStream().close();               } else {                     outStream.write(fileData.getData(), 0,                             fileData.getData().length);                 }                 outStream.write(LINE_ENTER.getBytes());             }             // 数据结束标志            byte[] endData = ("--" + HTTP_BOUNDARY + "--" + LINE_ENTER)                     .getBytes();            outStream.write(endData);             outStream.flush();             outStream.close();            int responseCode = conn.getResponseCode();             if (responseCode != RESPONSE_OK) {               throw new RuntimeException("请求url失败");             }             InputStream is = conn.getInputStream();             int ch;             StringBuilder b = new StringBuilder();            while ((ch = is.read()) != -1) {                 b.append((char) ch);           }            Log.i("HttpPost", b.toString());             conn.disconnect();             return b.toString();        } catch (Exception e) {            throw new RuntimeException();       }     }    // 上传单个文件   public static String post(String urlPath, Map<String, String> params,             FormFile formFiles) {         return post(urlPath, params, new FormFile[] { formFiles });     }}

?

 // 以表单方式发送请求          public static void sendDataToServerByForm() throws Exception {                      Map<String, String> params = new HashMap<String, String>();                  params.put("method", "sendDataByForm");                   params.put("strData", "字符串数据");                     // 获取SDCard中的good.jpg                     File file = new File(Environment.getExternalStorageDirectory(),                                      "app_Goog_Android_w.png");                     FormFile fileData = new FormFile("app_Goog_Android_w.png", new FileInputStream(file),                                    "fileData", "application/octet-stream");                    HttpUploadRequester.post(                                     "http://192.168.0.2:8080/AndroidWebServer/server.do", params,                                      fileData);          }

?