【发布时间】：2019-06-23 18:05:03
【问题描述】：
我正在尝试使用Google Drive REST API v3 将文件上传到Google Drive。上传过程完成后，返回一个status code of 200（成功）。但我在Google Drive 中找不到这些文件。请告诉我我做错了什么？如果您在帮助我解决我的这个问题的同时提供适当的说明或更好的代码 sn-p，我将不胜感激。我真的很期待你的回答。
我已尝试按照文档进行操作，但仍然遇到相同的错误。我在网上和 stackoverflow 到处搜索，但似乎没有一个能解决我的问题。
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
}
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标签： android android-studio google-drive-api google-drive-android-api