我正在将有效负载 1430848842000 的时间戳转换为SimpleDateFormat(yyy-MM-DD HH:mm:ss)。我的输出是：
2015-05-125 14:00:42
如您所见，转换的日期部分很奇怪。它没有给我今年五月份的日期，而是给了我创建时间戳前一年的总天数。
我做了一些快速数学并确定125时间戳应该真的意味着5月5日，我怎么能自动转换这个，所以我的输出看起来像：
2015-05-5 14:00:42
答案 0 :(得分：4)
您的SimpleDateFormat应为yyyy-MM-DD HH:mm:ss而不是public String sendFileToServer(String filename, String targetUrl) {
String response = "error";
Log.e("Image filename", filename);
Log.e("url", targetUrl);
HttpURLConnection connection = null;
DataOutputStream outputStream = null;
// DataInputStream inputStream = null;
String pathToOurFile = filename;
String urlServer = targetUrl;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
DateFormat df = new SimpleDateFormat("yyyy_MM_dd_HH:mm:ss");
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024;
try {
FileInputStream fileInputStream = new FileInputStream(new File(
pathToOurFile));
URL url = new URL(urlServer);
connection = (HttpURLConnection) url.openConnection();
// Allow Inputs & Outputs
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setUseCaches(false);
connection.setChunkedStreamingMode(1024);
//connection.set
// Enable POST method
connection.setRequestMethod("POST");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);
outputStream = new DataOutputStream(connection.getOutputStream());
outputStream.writeBytes(twoHyphens + boundary + lineEnd);
String connstr = null;
connstr = "Content-Disposition: form-data; name=\"uploadedfile\";filename=\""
+ "uploadedfile.log" + "\"" + lineEnd;
Log.i("Connstr", connstr);
outputStream.writeBytes(connstr);
outputStream.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// Read file
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
Log.e("Image length", bytesAvailable + "");
try {
while (bytesRead > 0) {
try {
outputStream.write(buffer, 0, bufferSize);
} catch (OutOfMemoryError e) {
e.printStackTrace();
response = "outofmemoryerror";
return response;
}
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
} catch (Exception e) {
e.printStackTrace();
response = "error";
return response;
}
outputStream.writeBytes(lineEnd);
outputStream.writeBytes(twoHyphens + boundary + twoHyphens
+ lineEnd);
// Responses from the server (code and message)
int serverResponseCode = connection.getResponseCode();
String serverResponseMessage = connection.getResponseMessage();
Log.i("Server Response Code ", "" + serverResponseCode);
Log.i("Server Response Message", serverResponseMessage);
if (serverResponseCode == 200) {
response = "true";
}
String CDate = null;
Date serverTime = new Date(connection.getDate());
try {
CDate = df.format(serverTime);
} catch (Exception e) {
e.printStackTrace();
Log.e("Date Exception", e.getMessage() + " Parse Exception");
}
Log.i("Server Response Time", CDate + "");
filename = CDate
+ filename.substring(filename.lastIndexOf("."),
filename.length());
Log.i("File Name in Server : ", filename);
fileInputStream.close();
outputStream.flush();
outputStream.close();
outputStream = null;
} catch (Exception ex) {
// Exception handling
response = "error";
Log.e("Send file Exception", ex.getMessage() + "");
ex.printStackTrace();
}
return response;
}
。那就是＆＃34; DD ＆＃34;是＆＃34; dd ＆＃34;代替。
答案 1 :(得分：1)
正如其他人所提到的，您使用的格式错误来表示当月的日期。
您应该使用dd代替DD。
mm：分钟代表
MM：当月的代表
dd：日代表
DD：代表一年中的某一天（例如：365个中的50个）
hh： 12小时时钟表示
HH： 24小时制表示
import java.text.SimpleDateFormat;
Date date_now = new Date();
date_format = new SimpleDateFormat("yyyy-M-dd hh:mm:ss");
date_string = date_format.format(date_now);
System.out.println(date_string);
输出：
2014-8-07 1:51:12