android上传文件前端代码 android post上传文件

[size=large]1、发送图片+文字 

要特别注意，图片的文件名要为 pic 才会被新浪接收[/size]。 


Map map = new HashMap(); 

map.put("source", "appkey");//改成自己的key 

map.put("status", txt); 

postImg("http://api.t.sina.com.cn/statuses/upload.json",map,Environment.getExternalStorageDirectory()+ "/temp.jpg" 

 ,"帐号名字","密码"); 


 /** 

 * 直接通过HTTP协议提交数据到服务器,实现表单提交功能 

 * @param actionUrl 上传路径 

 * @param params 请求参数 key为参数名,value为参数值 

 * @param filename 上传文件 

 * @param username 用户名 

 * @param password 密码 

 */ 

private void postImg(String actionUrl,Map<String, String> params, String filename,String username,String password) { 

 try { 

 String BOUNDARY = "--------------et567z"; //数据分隔线 

 String MULTIPART_FORM_DATA = "Multipart/form-data"; 


 URL url = new URL(actionUrl); 

 HttpURLConnection conn = (HttpURLConnection) url.openConnection(); 


 conn.setDoInput(true);//允许输入 

 conn.setDoOutput(true);//允许输出 

 conn.setUseCaches(false);//不使用Cache 

 conn.setRequestMethod("POST"); 

 conn.setRequestProperty("Connection", "Keep-Alive"); 

 conn.setRequestProperty("Charset", "UTF-8"); 

 conn.setRequestProperty("Content-Type", MULTIPART_FORM_DATA + ";boundary=" + BOUNDARY); 

 String usernamePassword=username+":"+password; 

 conn.setRequestProperty("Authorization","Basic "+new String(SecBase64.encode(usernamePassword.getBytes()))); 


 StringBuilder sb = new StringBuilder(); 


 //上传的表单参数部分，格式请参考文章 

 for (Map.Entry<String, String> entry : params.entrySet()) {//构建表单字段内容 

 sb.append("--"); 

 sb.append(BOUNDARY); 

 sb.append("\r\n"); 

 sb.append("Content-Disposition: form-data; name=\""+ entry.getKey() + "\"\r\n\r\n"); 

 sb.append(entry.getValue()); 

 sb.append("\r\n"); 

 } 

 // System.out.println(sb.toString()); 

 DataOutputStream outStream = new DataOutputStream(conn.getOutputStream()); 

 outStream.write(sb.toString().getBytes());//发送表单字段数据 

 byte[] content = readFileImage(filename); 

 //上传的文件部分，格式请参考文章 

 //System.out.println("content:"+content.toString()); 

 StringBuilder split = new StringBuilder(); 

 split.append("--"); 

 split.append(BOUNDARY); 

 split.append("\r\n"); 

 split.append("Content-Disposition: form-data;name=\"pic\";filename=\"temp.jpg\"\r\n"); 

 split.append("Content-Type: image/jpg\r\n\r\n"); 

 System.out.println(split.toString()); 

 outStream.write(split.toString().getBytes()); 

 outStream.write(content, 0, content.length); 

 outStream.write("\r\n".getBytes()); 


 byte[] end_data = ("--" + BOUNDARY + "--\r\n").getBytes();//数据结束标志 

 outStream.write(end_data); 

 outStream.flush(); 

 int cah = conn.getResponseCode(); 

 // if (cah != 200) throw new RuntimeException("请求url失败:"+cah); 

 if(cah == 200)//如果发布成功则提示成功 

 { 

 /*读返回数据*/ 

 //String strResult = EntityUtils.toString(httpResponse.getEntity()); 


 new AlertDialog.Builder(Main.this) 

 // Main.this视情况而定，这个一般是指当前显示的Activity对应的XML视窗。 

 .setTitle("")// 设置对话框的标题 

 .setPositiveButton("确定",// 设置对话框的确认按钮 

 new DialogInterface.OnClickListener() {// 设置确认按钮的事件 

 public void onClick(DialogInterface dialog, int which) { 


 }}) 

 .setMessage(" 发布成功 ")// 设置对话框的内容 

 .show(); 

 } 

 else if(cah == 400) 

 { 

 new AlertDialog.Builder(Main.this) 

 // Main.this视情况而定，这个一般是指当前显示的Activity对应的XML视窗。 

 .setTitle("")// 设置对话框的标题 

 .setPositiveButton("确定",// 设置对话框的确认按钮 

 new DialogInterface.OnClickListener() {// 设置确认按钮的事件 

 public void onClick(DialogInterface dialog, int which) { 


 }}) 

 .setMessage(" 发布失败 \n 不可连续发布相同内容 ")// 设置对话框的内容 

 .show(); 

 }else{ 

 throw new RuntimeException("请求url失败:"+cah); 

 } 


 // InputStream is = conn.getInputStream(); 

 // int ch; 

 // StringBuilder b = new StringBuilder(); 

 // while( (ch = is.read()) != -1 ){ 

 // b.append((char)ch); 

 // } 

 outStream.close(); 

 conn.disconnect(); 

 } 

 catch (IOException e) 

 { 

 e.printStackTrace(); 


 } 

 catch (Exception e) 

 { 

 e.printStackTrace(); 


 } 


} 


 public static byte[] readFileImage(String filename) throws IOException { 

 BufferedInputStream bufferedInputStream = new BufferedInputStream( 

 new FileInputStream(filename)); 

 int len = bufferedInputStream.available(); 

 byte[] bytes = new byte[len]; 

 int r = bufferedInputStream.read(bytes); 

 if (len != r) { 

 bytes = null; 

 throw new IOException("读取文件不正确"); 

 } 

 bufferedInputStream.close(); 

 return bytes; 

} 



[size=large]2、只发文字[/size] 


//POST发布文本信息 

 public void sendMsg(String status,String username,String password){ 

 HttpClient httpclient = new DefaultHttpClient(); 

 HttpPost httppost = new HttpPost("http://api.t.sina.com.cn/statuses/update.json"); 

 //NameValuePair实现请求参数的封装 


 List params = new ArrayList (); 

 params.add(new BasicNameValuePair("source", "4016954419")); 

 params.add(new BasicNameValuePair("status", status)); 

 try 

 { 


 //添加请求参数到请求对象 


 httppost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8)); 

 httppost.getParams().setBooleanParameter(CoreProtocolPNames.USE_EXPECT_CONTINUE, false); 


 String data=username+":"+password; 

 httppost.addHeader("Authorization","Basic "+new String(SecBase64.encode(data.getBytes()))); 

 httppost.addHeader("Content-Type", "application/x-www-form-urlencoded"); 


 //发送请求并等待响应 

 HttpResponse httpResponse = new DefaultHttpClient().execute(httppost); 

 //若状态码为200 ok 

 if(httpResponse.getStatusLine().getStatusCode() == 200) 

 { 

 //读返回数据 

 //String strResult = EntityUtils.toString(httpResponse.getEntity()); 


 new AlertDialog.Builder(Main.this) 

 // Main.this视情况而定，这个一般是指当前显示的Activity对应的XML视窗。 

 .setTitle("")// 设置对话框的标题 

 .setPositiveButton("确定",// 设置对话框的确认按钮 

 new DialogInterface.OnClickListener() {// 设置确认按钮的事件 

 public void onClick(DialogInterface dialog, int which) { 


 }}) 

 .setMessage(" 发布成功 ")// 设置对话框的内容 

 .show(); 

 } 

 else if(httpResponse.getStatusLine().getStatusCode() == 400) 

 { 

 new AlertDialog.Builder(Main.this) 

 // Main.this视情况而定，这个一般是指当前显示的Activity对应的XML视窗。 

 .setTitle("")// 设置对话框的标题 

 .setPositiveButton("确定",// 设置对话框的确认按钮 

 new DialogInterface.OnClickListener() {// 设置确认按钮的事件 

 public void onClick(DialogInterface dialog, int which) { 


 }}) 

 .setMessage(" 发布失败 \n 不可连续发布相同内容 ")// 设置对话框的内容 

 .show(); 

 } 


 } 

 catch (ClientProtocolException e) 

 { 

 e.printStackTrace(); 

 et.setText(et.getText()+" Error1:"+e.getMessage()); 

 } 

 catch (IOException e) 

 { 

 e.printStackTrace(); 

 et.setText(et.getText()+" Error2:"+e.getMessage()); 

 } 

 catch (Exception e) 

 { 

 e.printStackTrace(); 

 et.setText(et.getText()+" Error3:"+e.getMessage()); 

 } 


 } 


[size=large]3、加密类 SecBase64.java[/size] 



package wizzer.cn.app; 


public class SecBase64 { 

private static final byte[] encodingTable = { (byte) 'A', (byte) 'B', 

 (byte) 'C', (byte) 'D', (byte) 'E', (byte) 'F', (byte) 'G', 

 (byte) 'H', (byte) 'I', (byte) 'J', (byte) 'K', (byte) 'L', 

 (byte) 'M', (byte) 'N', (byte) 'O', (byte) 'P', (byte) 'Q', 

 (byte) 'R', (byte) 'S', (byte) 'T', (byte) 'U', (byte) 'V', 

 (byte) 'W', (byte) 'X', (byte) 'Y', (byte) 'Z', (byte) 'a', 

 (byte) 'b', (byte) 'c', (byte) 'd', (byte) 'e', (byte) 'f', 

 (byte) 'g', (byte) 'h', (byte) 'i', (byte) 'j', (byte) 'k', 

 (byte) 'l', (byte) 'm', (byte) 'n', (byte) 'o', (byte) 'p', 

 (byte) 'q', (byte) 'r', (byte) 's', (byte) 't', (byte) 'u', 

 (byte) 'v', (byte) 'w', (byte) 'x', (byte) 'y', (byte) 'z', 

 (byte) '0', (byte) '1', (byte) '2', (byte) '3', (byte) '4', 

 (byte) '5', (byte) '6', (byte) '7', (byte) '8', (byte) '9', 

 (byte) '+', (byte) '/' }; 

private static final byte[] decodingTable; 

static { 

 decodingTable = new byte[128]; 

 for (int i = 0; i < 128; i++) { 

 decodingTable[i] = (byte) -1; 

 } 

 for (int i = 'A'; i <= 'Z'; i++) { 

 decodingTable[i] = (byte) (i - 'A'); 

 } 

 for (int i = 'a'; i <= 'z'; i++) { 

 decodingTable[i] = (byte) (i - 'a' + 26); 

 } 

 for (int i = '0'; i <= '9'; i++) { 

 decodingTable[i] = (byte) (i - '0' + 52); 

 } 

 decodingTable['+'] = 62; 

 decodingTable['/'] = 63; 

} 


//加密 


public static byte[] encode(byte[] data) { 

 byte[] bytes; 

 int modulus = data.length % 3; 

 if (modulus == 0) { 

 bytes = new byte[(4 * data.length) / 3]; 

 } else { 

 bytes = new byte[4 * ((data.length / 3) + 1)]; 

 } 

 int dataLength = (data.length - modulus); 

 int a1; 

 int a2; 

 int a3; 

 for (int i = 0, j = 0; i < dataLength; i += 3, j += 4) { 

 a1 = data[i] & 0xff; 

 a2 = data[i + 1] & 0xff; 

 a3 = data[i + 2] & 0xff; 

 bytes[j] = encodingTable[(a1 >>> 2) & 0x3f]; 

 bytes[j + 1] = encodingTable[((a1 << 4) | (a2 >>> 4)) & 0x3f]; 

 bytes[j + 2] = encodingTable[((a2 << 2) | (a3 >>> 6)) & 0x3f]; 

 bytes[j + 3] = encodingTable[a3 & 0x3f]; 

 } 

 int b1; 

 int b2; 

 int b3; 

 int d1; 

 int d2; 

 switch (modulus) { 

 case 0: 

 break; 

 case 1: 

 d1 = data[data.length - 1] & 0xff; 

 b1 = (d1 >>> 2) & 0x3f; 

 b2 = (d1 << 4) & 0x3f; 

 bytes[bytes.length - 4] = encodingTable[b1]; 

 bytes[bytes.length - 3] = encodingTable[b2]; 

 bytes[bytes.length - 2] = (byte) '='; 

 bytes[bytes.length - 1] = (byte) '='; 

 break; 

 case 2: 

 d1 = data[data.length - 2] & 0xff; 

 d2 = data[data.length - 1] & 0xff; 

 b1 = (d1 >>> 2) & 0x3f; 

 b2 = ((d1 << 4) | (d2 >>> 4)) & 0x3f; 

 b3 = (d2 << 2) & 0x3f; 

 bytes[bytes.length - 4] = encodingTable[b1]; 

 bytes[bytes.length - 3] = encodingTable[b2]; 

 bytes[bytes.length - 2] = encodingTable[b3]; 

 bytes[bytes.length - 1] = (byte) '='; 

 break; 

 } 

 return bytes; 

} 


//解密 


public static byte[] decode(byte[] data) { 

 byte[] bytes; 

 byte b1; 

 byte b2; 

 byte b3; 

 byte b4; 

 data = discardNonBase64Bytes(data); 

 if (data[data.length - 2] == '=') { 

 bytes = new byte[(((data.length / 4) - 1) * 3) + 1]; 

 } else if (data[data.length - 1] == '=') { 

 bytes = new byte[(((data.length / 4) - 1) * 3) + 2]; 

 } else { 

 bytes = new byte[((data.length / 4) * 3)]; 

 } 

 for (int i = 0, j = 0; i < (data.length - 4); i += 4, j += 3) { 

 b1 = decodingTable[data[i]]; 

 b2 = decodingTable[data[i + 1]]; 

 b3 = decodingTable[data[i + 2]]; 

 b4 = decodingTable[data[i + 3]]; 

 bytes[j] = (byte) ((b1 << 2) | (b2 >> 4)); 

 bytes[j + 1] = (byte) ((b2 << 4) | (b3 >> 2)); 

 bytes[j + 2] = (byte) ((b3 << 6) | b4); 

 } 

 if (data[data.length - 2] == '=') { 

 b1 = decodingTable[data[data.length - 4]]; 

 b2 = decodingTable[data[data.length - 3]]; 

 bytes[bytes.length - 1] = (byte) ((b1 << 2) | (b2 >> 4)); 

 } else if (data[data.length - 1] == '=') { 

 b1 = decodingTable[data[data.length - 4]]; 

 b2 = decodingTable[data[data.length - 3]]; 

 b3 = decodingTable[data[data.length - 2]]; 

 bytes[bytes.length - 2] = (byte) ((b1 << 2) | (b2 >> 4)); 

 bytes[bytes.length - 1] = (byte) ((b2 << 4) | (b3 >> 2)); 

 } else { 

 b1 = decodingTable[data[data.length - 4]]; 

 b2 = decodingTable[data[data.length - 3]]; 

 b3 = decodingTable[data[data.length - 2]]; 

 b4 = decodingTable[data[data.length - 1]]; 

 bytes[bytes.length - 3] = (byte) ((b1 << 2) | (b2 >> 4)); 

 bytes[bytes.length - 2] = (byte) ((b2 << 4) | (b3 >> 2)); 

 bytes[bytes.length - 1] = (byte) ((b3 << 6) | b4); 

 } 

 return bytes; 

} 


//解密 


public static byte[] decode(String data) { 

 byte[] bytes; 

 byte b1; 

 byte b2; 

 byte b3; 

 byte b4; 

 data = discardNonBase64Chars(data); 

 if (data.charAt(data.length() - 2) == '=') { 

 bytes = new byte[(((data.length() / 4) - 1) * 3) + 1]; 

 } else if (data.charAt(data.length() - 1) == '=') { 

 bytes = new byte[(((data.length() / 4) - 1) * 3) + 2]; 

 } else { 

 bytes = new byte[((data.length() / 4) * 3)]; 

 } 

 for (int i = 0, j = 0; i < (data.length() - 4); i += 4, j += 3) { 

 b1 = decodingTable[data.charAt(i)]; 

 b2 = decodingTable[data.charAt(i + 1)]; 

 b3 = decodingTable[data.charAt(i + 2)]; 

 b4 = decodingTable[data.charAt(i + 3)]; 

 bytes[j] = (byte) ((b1 << 2) | (b2 >> 4)); 

 bytes[j + 1] = (byte) ((b2 << 4) | (b3 >> 2)); 

 bytes[j + 2] = (byte) ((b3 << 6) | b4); 

 } 

 if (data.charAt(data.length() - 2) == '=') { 

 b1 = decodingTable[data.charAt(data.length() - 4)]; 

 b2 = decodingTable[data.charAt(data.length() - 3)]; 

 bytes[bytes.length - 1] = (byte) ((b1 << 2) | (b2 >> 4)); 

 } else if (data.charAt(data.length() - 1) == '=') { 

 b1 = decodingTable[data.charAt(data.length() - 4)]; 

 b2 = decodingTable[data.charAt(data.length() - 3)]; 

 b3 = decodingTable[data.charAt(data.length() - 2)]; 

 bytes[bytes.length - 2] = (byte) ((b1 << 2) | (b2 >> 4)); 

 bytes[bytes.length - 1] = (byte) ((b2 << 4) | (b3 >> 2)); 

 } else { 

 b1 = decodingTable[data.charAt(data.length() - 4)]; 

 b2 = decodingTable[data.charAt(data.length() - 3)]; 

 b3 = decodingTable[data.charAt(data.length() - 2)]; 

 b4 = decodingTable[data.charAt(data.length() - 1)]; 

 bytes[bytes.length - 3] = (byte) ((b1 << 2) | (b2 >> 4)); 

 bytes[bytes.length - 2] = (byte) ((b2 << 4) | (b3 >> 2)); 

 bytes[bytes.length - 1] = (byte) ((b3 << 6) | b4); 

 } 

 return bytes; 

} 


private static byte[] discardNonBase64Bytes(byte[] data) { 

 byte[] temp = new byte[data.length]; 

 int bytesCopied = 0; 

 for (int i = 0; i < data.length; i++) { 

 if (isValidBase64Byte(data[i])) { 

 temp[bytesCopied++] = data[i]; 

 } 

 } 

 byte[] newData = new byte[bytesCopied]; 

 System.arraycopy(temp, 0, newData, 0, bytesCopied); 

 return newData; 

} 


private static String discardNonBase64Chars(String data) { 

 StringBuffer sb = new StringBuffer(); 

 int length = data.length(); 

 for (int i = 0; i < length; i++) { 

 if (isValidBase64Byte((byte) (data.charAt(i)))) { 

 sb.append(data.charAt(i)); 

 } 

 } 

 return sb.toString(); 

} 


private static boolean isValidBase64Byte(byte b) { 

 if (b == '=') { 

 return true; 

 } else if ((b < 0) || (b >= 128)) { 

 return false; 

 } else if (decodingTable[b] == -1) { 

 return false; 

 } 

 return true; 

} 


//测试类 

public static void main(String[] args) { 

 String data = "[e-mail]:etpass"; 

 byte[] result = SecBase64.encode(data.getBytes());// 加密 

 System.out.println("Basic "+data); 

 System.out.println("Basic "+new String(result)); 

 System.out.println(new String(SecBase64.decode(new String(result))));// 解密 

 } 

}