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Raspberry Pi 上的 Sqlite4java

2024-04-04

我想在 Raspberry Pi 上使用我的 java 项目。此代码依赖于 sqlite4java，它使用许多平台（包括 Arm 处理器）的本机实现link http://code.google.com/p/sqlite4java/downloads/list.

问题是java无法加载arm处理器所需的sqlite包装器。我正在做以下事情：

  1. 复制预编译库的所有版本（一一尝试）（libsqlite4java-linux-armv5te.so, libsqlite4java-linux-armv7a.so, libsqlite4java-linux-arm.so）我将其重命名为libsqlite4java-linux-arm.so.

  2. Command java -Djava.library.path=. -jar sqlite4java.jar -d给出输出：

    140213:092447.509 FINE [sqlite] Internal: loading library
140213:092447.536 FINE [sqlite] Internal: java.library.path=.
140213:092447.538 FINE [sqlite] Internal: sqlite4java.library.path=null
140213:092447.541 FINE [sqlite] Internal: cwd=/home/pi/sqlite4java-282/.
140213:092447.544 FINE [sqlite] Internal: default path=/home/pi/sqlite4java-282
140213:092447.554 FINE [sqlite] Internal: forced path=null 
140213:092447.558 FINE [sqlite] Internal: os.name=linux; os=linux
140213:092447.562 FINE [sqlite] Internal: os.arch=arm
140213:092447.575 FINE [sqlite] Internal: trying to load sqlite4java-linux-arm from /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so
140213:092447.596 FINE [sqlite] Internal: cannot load sqlite4java-linux-arm from /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: java.lang.UnsatisfiedLinkError: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: cannot open shared object file: No such file or directory
140213:092447.605 FINE [sqlite] Internal: trying to load sqlite4java-linux-arm
140213:092447.617 FINE [sqlite] Internal: cannot load sqlite4java-linux-arm: java.lang.UnsatisfiedLinkError: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: cannot open shared object file: No such file or directory
140213:092447.622 FINE [sqlite] Internal: trying to load sqlite4java-linux
140213:092447.627 FINE [sqlite] Internal: cannot load sqlite4java-linux: java.lang.UnsatisfiedLinkError: no sqlite4java-linux in java.library.path
140213:092447.638 FINE [sqlite] Internal: trying to load sqlite4java
140213:092447.642 FINE [sqlite] Internal: cannot load sqlite4java: java.lang.UnsatisfiedLinkError: no sqlite4java in java.library.path
140213:092447.645 FINE [sqlite] Internal: trying to load sqlite4java-linux-arm-d
140213:092447.660 FINE [sqlite] Internal: cannot load sqlite4java-linux-arm-d: java.lang.UnsatisfiedLinkError: no sqlite4java-linux-arm-d in java.library.path
140213:092447.676 FINE [sqlite] Internal: trying to load sqlite4java-linux-d
140213:092447.680 FINE [sqlite] Internal: cannot load sqlite4java-linux-d: java.lang.UnsatisfiedLinkError: no sqlite4java-linux-d in java.library.path
140213:092447.683 FINE [sqlite] Internal: trying to load sqlite4java-d
140213:092447.699 FINE [sqlite] Internal: cannot load sqlite4java-d: java.lang.UnsatisfiedLinkError: no sqlite4java-d in java.library.path
Error: cannot load SQLite
java.lang.UnsatisfiedLinkError: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: cannot open shared object file: No such file or directory
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1957)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1882)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1843)
at java.lang.Runtime.load0(Runtime.java:795)
at java.lang.System.load(System.java:1061)
at com.almworks.sqlite4java.Internal.tryLoadFromPath(Internal.java:337)
at com.almworks.sqlite4java.Internal.loadLibraryX(Internal.java:117)
at com.almworks.sqlite4java.SQLite.main(SQLite.java:368)

  3. 尝试设置LD_LIBRARY_PATH to /usr/lib/arm-linux-gnueabihf and /usr/lib

在给定路径上存在文件。我已经安装了sqlite3 and libsqlite3-dev。我在 QEMU 模拟器上使用最新的 raspbian 发行版：

$ uname -a
$ Linux raspberrypi 3.10.26+ #2 Fri Jan 17 22:13:59 EST 2014 armv6l GNU/Linux

任何帮助都会有用的。

Thanks!


最后我找到了解决方案。我必须在 Raspbian 上构建库文件。 以下是步骤：

  1. 获取来源here http://code.google.com/p/sqlite4java/source/checkout
  2. Get sqlite_wrap.c文件来自here https://raw.github.com/SpatialInteractive/sqlite4java-custom/master/custom/swig/sqlite_wrap.c
  3. Put sqlite_wrap.c到源目录。你需要native, sqlite目录和sqlite_wrap.c文件在那里。

  4. Create RELEASE文件内容：

    #gcc
gcc -O2 -DNDEBUG -fpic -DARM -DARCH="ARM" -DLINUX -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_LITTLE_ENDIAN -fno-omit-frame-pointer -fno-strict-aliasing -static-libgcc -I./sqlite -I/usr/lib/jvm/jdk-7-oracle-armhf/include -I/usr/lib/jvm/jdk-7-oracle-armhf/include/linux -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_MEMORY_MANAGEMENT -DSQLITE_ENABLE_STAT2 -DHAVE_READLINE=0 -DSQLITE_THREADSAFE=1 -DSQLITE_THREAD_OVERRIDE_LOCK=-1 -DTEMP_STORE=1 -DSQLITE_OMIT_LOAD_EXTENSION=1 -DSQLITE_OMIT_DEPRECATED -DSQLITE_OS_UNIX=1 -c ./sqlite/sqlite3.c -o sqlite3.o
gcc -O2 -DNDEBUG -fpic -DARM -DARCH="ARM" -DLINUX -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_LITTLE_ENDIAN -fno-omit-frame-pointer -fno-strict-aliasing -static-libgcc -I./sqlite -I/usr/lib/jvm/jdk-7-oracle-armhf/include -I/usr/lib/jvm/jdk-7-oracle-armhf/include/linux -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_MEMORY_MANAGEMENT -DSQLITE_ENABLE_STAT2 -DHAVE_READLINE=0 -DSQLITE_THREADSAFE=1 -DSQLITE_THREAD_OVERRIDE_LOCK=-1 -DTEMP_STORE=1 -DSQLITE_OMIT_LOAD_EXTENSION=1 -DSQLITE_OMIT_DEPRECATED -DSQLITE_OS_UNIX=1 -c sqlite_wrap.c -o sqlite_wrap.o
gcc -O2 -DNDEBUG -fpic -Di586 -DARCH="i586" -DLINUX -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_LITTLE_ENDIAN -fno-omit-frame-pointer -fno-strict-aliasing -static-libgcc -I./sqlite -I./native -I/usr/lib/jvm/jdk-7-oracle-armhf/include -I/usr/lib/jvm/jdk-7-oracle-armhf/include/linux -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_MEMORY_MANAGEMENT -DSQLITE_ENABLE_STAT2 -DHAVE_READLINE=0 -DSQLITE_THREADSAFE=1 -DSQLITE_THREAD_OVERRIDE_LOCK=-1 -DTEMP_STORE=1 -DSQLITE_OMIT_LOAD_EXTENSION=1 -DSQLITE_OMIT_DEPRECATED -DSQLITE_OS_UNIX=1 -c ./native/sqlite3_wrap_manual.c -o sqlite3_wrap_manual.o
gcc -O2 -DNDEBUG -fpic -Di586 -DARCH="i586" -DLINUX -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_LITTLE_ENDIAN -fno-omit-frame-pointer -fno-strict-aliasing -static-libgcc -I./sqlite -I./native -I/usr/lib/jvm/jdk-7-oracle-armhf/include -I/usr/lib/jvm/jdk-7-oracle-armhf/include/linux -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_MEMORY_MANAGEMENT -DSQLITE_ENABLE_STAT2 -DHAVE_READLINE=0 -DSQLITE_THREADSAFE=1 -DSQLITE_THREAD_OVERRIDE_LOCK=-1 -DTEMP_STORE=1 -DSQLITE_OMIT_LOAD_EXTENSION=1 -DSQLITE_OMIT_DEPRECATED -DSQLITE_OS_UNIX=1 -c ./native/intarray.c -o intarray.o
gcc -O2 -DNDEBUG -fpic -Di586 -DARCH="i586" -DLINUX -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_LITTLE_ENDIAN -fno-omit-frame-pointer -fno-strict-aliasing -static-libgcc -shared -mno-cygwin -Wl,-soname=libsqlite4java-linux-arm.so -o libsqlite4java-linux-arm.so sqlite3.o sqlite_wrap.o sqlite3_wrap_manual.o intarray.o

  5. chmod +x RELEASE并运行它./RELEASE.

  6. libsqlite4java-linux-arm.so将被构建，您需要将其复制到应用程序的正确路径中。
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