我正在尝试使用Google Drive将文件上传到Google Drive REST API v3。上载过程完成后，它返回status code of 200（成功）。但是我在Google Drive中找不到文件。请告诉我我做错了什么？如果您在为我解决此问题的同时提供了正确的插图或更好的代码段，将不胜感激。我真的很期待您的回答。
我尝试按照文档进行操作，但仍然遇到相同的错误。我已经到处搜索了在线和stackoverflow，但是似乎没有一个可以解决我的问题。
这是代码
private val AUTHORIZATION_PARAM = "Authorization"
private val BEARER_VAL = "Bearer "
private val CONTENT_TYPE_PARAM = "Content-Type: "
private val LINE_FEED = "\r\n"
private val APP_FOLDER_ID = "appDataFolder"
fun connectAndStartOperation() {
if (mAuthCode == null) {
signInOptions = GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestEmail()
.requestProfile()
.requestScopes(Scope(Scopes.DRIVE_APPFOLDER))
.requestIdToken(resources.getString(R.string.gdrive_clientId))
.requestServerAuthCode(resources.getString(R.string.gdrive_clientId))
.build()
mGoogleSignInClient = GoogleSignIn.getClient(this, signInOptions!!)
startActivityForResult(mGoogleSignInClient?.signInIntent, CLOUD_STORAGE)
Log.i("mAuthCode", "false")
} else {
Log.i("mAuthCode", "true")
writeDbToDrive()
mNextGoogleApiOperation = INVALID;
}
}
fun disconnect() {
mGoogleSignInClient?.signOut()
mActivity = null
mNextGoogleApiOperation = INVALID
mAuthCode = null
mAccessToken = null
mTokenExpired = 0
}
override fun onDestroy() {
disconnect()
super.onDestroy()
}
public override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (requestCode == CLOUD_STORAGE) {
val task = GoogleSignIn.getSignedInAccountFromIntent(data)
.addOnSuccessListener(this)
.addOnFailureListener(this)
}
}
override fun onSuccess(googleSignInAccount: GoogleSignInAccount?) {
Log.i("mAuthCode", "Success")
val scope = "oauth2:https://www.googleapis.com/auth/plus.me https://www.googleapis.com/auth/userinfo.profile"
idTokenString = googleSignInAccount?.idToken
mAuthCode = googleSignInAccount?.serverAuthCode
mGoogleSignInAccount = googleSignInAccount
doAsync {
try {
mAccessToken = GoogleAuthUtil.getToken(this@SettingsActivity, mGoogleSignInAccount?.account, scope)
} catch (e: Exception) {
Log.i("Error AccessToken", "${e.message}")
e.printStackTrace()
}
uiThread {
Log.i("AccessTokenMy", "$mAccessToken")
}
}
}
override fun onFailure(p0: java.lang.Exception) {
Log.i("mAuthCode", "Failed")
p0.printStackTrace()
}
private fun writeDbToDrive() {
var conn: HttpURLConnection? = null
var os: OutputStream? = null
val accessToken = requestAccessToken(mGoogleSignInAccount!!)
if (accessToken == null)
return
try {
val boundary = "pb" + System.currentTimeMillis()
val url = URL("https://www.googleapis.com/upload/drive/v3/files?uploadType=multipart")
conn = url.openConnection() as HttpURLConnection
conn.requestMethod = "POST"
conn.useCaches = false
conn.doOutput = true
conn.doInput = true
conn.connectTimeout = 5000
conn.setRequestProperty(AUTHORIZATION_PARAM, BEARER_VAL + accessToken!!)
conn.setRequestProperty("Content-Type", "multipart/related; boundary=$boundary")
Log.i("Action", "Parameter set for server")
/////// Prepare data
//val timestamp = SimpleDateFormat("yyyy-MM-dd_HH:mm:ss", Locale.getDefault()).format(Date())
// Prepare file metadata (Change your backup file name here)
val b = StringBuilder()
b.append('{')
.append("\"name\":\"").append(exportedFileName).append('\"')
.append(',')
.append("\"mimeType\":").append("\"text\\/csv\"")
.append(',') //"\"application\\/vnd.google-apps.unknown\""
.append("\"parents\":").append("[\"").append(APP_FOLDER_ID).append("\"]")
.append('}')
val metadata = b.toString()
val data = readFile(File(filePath))
/////// Calculate body length
var bodyLength = 0
// MetaData part
b.setLength(0)
b.append("--").append(boundary).append(LINE_FEED)
b.append(CONTENT_TYPE_PARAM).append("application/json; charset=UTF-8")
.append(LINE_FEED)
b.append(LINE_FEED)
b.append(metadata).append(LINE_FEED)
b.append(LINE_FEED)
b.append("--").append(boundary).append(LINE_FEED)
b.append(CONTENT_TYPE_PARAM).append("text/csv").append(LINE_FEED)
b.append(LINE_FEED)
val beforeFilePart = b.toString().toByteArray(charset("UTF_8"))
bodyLength += beforeFilePart.size
bodyLength += data.size // File
b.setLength(0)
b.append(LINE_FEED)
b.append("--").append(boundary).append("--")
val afterFilePart = b.toString().toByteArray(charset("UTF_8"))
bodyLength += afterFilePart.size
conn.setRequestProperty("Content-Length", bodyLength.toString())
//if (BuildConfig.DEBUG_MODE) DebugHelper.log("LENGTH", bodyLength)
/////// Write to socket
os = conn.outputStream
try {
os!!.write(beforeFilePart)
os!!.write(data)
os!!.write(afterFilePart)
os!!.flush()
} catch (e: Exception) {
e.printStackTrace()
}
val msg = conn.responseMessage
val code = conn.responseCode
if (code == 200) {
Log.i("writeDbToDrive", "Exported Successfully: $code $msg")
} else {
Log.i("writeDbToDrive", "Error: $code $msg")
}
} catch (e: Exception) {
e.printStackTrace()
Log.i("writeDbToDrive", e.message!!)
} finally {
if (os != null) {
try {
os!!.close()
} catch (e: IOException) {
}
}
conn?.disconnect()
}
}
@Throws(IOException::class)
private fun readFile(file: File): ByteArray {
val f = RandomAccessFile(file, "r")
try {
val longlength = f.length()
val length = longlength.toInt()
if (length.toLong() != longlength)
throw IOException("File size >= 10 Mb")
val data = ByteArray(length)
f.readFully(data)
return data
} finally {
f.close()
}
}
private fun requestAccessToken(mGoogleSignInAccount: GoogleSignInAccount): String? {
val scope = "oauth2:https://www.googleapis.com/auth/plus.me https://www.googleapis.com/auth/userinfo.profile"
doAsync {
try {
mAccessToken = GoogleAuthUtil.getToken(this@SettingsActivity, mGoogleSignInAccount?.account, scope)
} catch (e: Exception) {
Log.i("Error AccessToken", "${e.message}")
e.printStackTrace()
}
uiThread {
Log.i("AccessTokenMy", "$mAccessToken")
}
}
return mAccessToken
}
答案 0 :(得分：0)
在阅读完此Files: create文档之后，我终于解决了该问题。我不知道文件保存在我的应用创建的AppData文件夹中。 AppData文件夹被隐藏，只能由我的应用程序访问或通过我的应用程序访问。为了能够将文件保存到My Drive文件夹中，我删除了部分元数据
` .append(',')
.append("\"parents\":").append("[\"").append(APP_FOLDER_ID).append("\"]")`
所以元数据部分现在是这样的
val b = StringBuilder()
b.append('{')
.append("\"name\":\"").append(exportedFileName).append('\"')
.append(',')
.append("\"mimeType\":").append("\"text\\/csv\"")
.append('}')
val metadata = b.toString()
其他所有东西都保持不变