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我正在使用Eclipse Neon,GWT和sqlite編寫Web應用程序。我的webapp在某個點連接到位於war
目錄中的數據庫(爲了使db可用於服務器,這是必需的)。當我嘗試創建連接,嚴格的閱讀模式:連接到SQLite數據庫時出現GAE受限類錯誤
Properties config = new Properties();
config.setProperty("open_mode", "1");
Class.forName("org.sqlite.JDBC");
return DriverManager.getConnection("jdbc:sqlite:db.db");
以下異常堆棧出現在控制檯:
java.lang.NoClassDefFoundError: java.io.FileOutputStream is a restricted class. Please see the Google App Engine developer's guide for more details.
at com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime.java:52)
at org.sqlite.SQLiteJDBCLoader.extractAndLoadLibraryFile(SQLiteJDBCLoader.java:165)
at org.sqlite.SQLiteJDBCLoader.loadSQLiteNativeLibrary(SQLiteJDBCLoader.java:290)
at org.sqlite.SQLiteJDBCLoader.initialize(SQLiteJDBCLoader.java:65)
at org.sqlite.core.NativeDB.load(NativeDB.java:53)
at org.sqlite.core.CoreConnection.open(CoreConnection.java:211)
at org.sqlite.core.CoreConnection.<init>(CoreConnection.java:76)
at org.sqlite.jdbc3.JDBC3Connection.<init>(JDBC3Connection.java:24)
at org.sqlite.jdbc4.JDBC4Connection.<init>(JDBC4Connection.java:23)
at org.sqlite.SQLiteConnection.<init>(SQLiteConnection.java:45)
at org.sqlite.JDBC.createConnection(JDBC.java:114)
at org.sqlite.JDBC.connect(JDBC.java:88)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
[...]
實際上,我剛剛開放對數據庫的連接。日誌被轉發到控制檯,所以沒有打開文件來存儲它們,並且我不創建文件。這個錯誤來自於GAE和我無法控制的JDBC加載器。
我在做什麼錯?