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Java + Raspberry Pi + SQlite = NoClassDefFoundError

[英]Java + Raspberry Pi + SQlite = NoClassDefFoundError

I'm trying to run my new application on my Raspberry Pi. 我正在尝试在Raspberry Pi上运行新应用程序。 It should connect to a sqlite-database. 它应该连接到一个sqlite数据库。 sqlite-jdbc-3.8.11.2.jar is added to the build-path. sqlite-jdbc-3.8.11.2.jar已添加到构建路径。 On my other Linux it works very well, but on the Raspberry it doesn't. 在我的其他Linux上,它工作得很好,但是在Raspberry上却没有。 I downloaded libsqlitejdbc.so from https://bitbucket.org/xerial/sqlite-jdbc/issues/79/compile-for-arm , because I read, that this is necessary to run it on the Pi. 我从https://bitbucket.org/xerial/sqlite-jdbc/issues/79/compile-for-arm下载libsqlitejdbc.so,因为我读到在Pi上运行它是必需的。 The file libsqlitejdbc.so is in /home/pi/workspace/data/ The relevant code is: 文件libsqlitejdbc.so位于/ home / pi / workspace / data /中,相关代码为:

Class.forName("org.sqlite.JDBC");
System.loadLibrary("sqlitejdbc");
connection = DriverManager.getConnection("jdbc:sqlite:"+DB_PATH);

When I run it, I get a NoClassDefFoundError caused by line 2: 当我运行它时,我收到由第2行引起的NoClassDefFoundError:

java.lang.NoClassDefFoundError: org/sqlite/NativeDB
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1968)
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1893)
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1883)
    at java.lang.Runtime.loadLibrary0(Runtime.java:849)
    at java.lang.System.loadLibrary(System.java:1088)
    at kanu.kayapp.DBController.<init>(DBController.java:46)
    at kanu.kayapp.DBController.<clinit>(DBController.java:26)
    at kanu.kayapp.Server.parseMessage(Server.java:210)
    at kanu.kayapp.Server.mainLoop(Server.java:145)
    at kanu.kayapp.Main.main(Main.java:34)
Caused by: java.lang.ClassNotFoundException: org.sqlite.NativeDB
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 11 more

I tried the following things: 我尝试了以下操作:

$ export CLASSPATH="/home/pi/workspace/data/"
$ export LD_LIBRARY_PATH="/home/pi/workspace/data/"

I have managed solving the JDBC Sqlite problems on Raspberry Pi using the .jar file here: 我已经设法使用.jar文件在Raspberry Pi上解决JDBC Sqlite问题:

https://github.com/JeffLeFoll/IoT-Challenge-Capgemini/commit/60c86ee680c275b085a5af9a79412eefc1ae8c74 https://github.com/JeffLeFoll/IoT-Challenge-Capgemini/commit/60c86ee680c275b085a5af9a79412eefc1ae8c74

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