Question

我有那些java文件：

// i2cjni.java

public class i2cJNI {
static {
    try {
        System.loadLibrary("i2cbrdg");
    }
    catch(UnsatisfiedLinkError e) {
        System.err.println("Native code library failed to load. \n" + e);
        System.exit(1);
    }
}

public final static native long U2C_GetDeviceCount(); public final static native long U2C_OpenDevice(long jarg1); public final static native long U2C_CloseDevice(long jarg1); ... }

// i2c.java

public class i2c {
public static SWIGTYPE_p_BYTE U2C_GetDeviceCount() {
return new SWIGTYPE_p_BYTE(i2cJNI.U2C_GetDeviceCount(), true);

}

// I2CBoard.java

public class I2CBoard extends i2c{

public static void main(String[] args) {

    SWIGTYPE_p_BYTE nDevice = new SWIGTYPE_p_BYTE();
    i2c.U2C_OpenDevice(nDevice);
    SWIGTYPE_p_BYTE mDevice = i2c.U2C_GetDeviceCount();
    System.out.println("mDevice: " + mDevice);
    }

}

- 我已经设置了这样的本机库路径：

i2c_wrapper/Native library location: ro.i2c.mirela/os/x86_64
 and in the same way to the rest of them: JRE System Library, Plug-in Dependencies, ro.i2c.mirela/os(class folder) and i2c_wrapper

- 我已将此文件夹添加到项目中：

os/x86_64/i2c_wrapper.dll
os/x86_64/i2cbrdg.dll
os/x86_64/U2CCommon.dll

- 当我尝试调用U2C_GetDeviceCount（）函数等时，我收到此错误。有任何想法吗？

Exception in thread "main" java.lang.UnsatisfiedLinkError: ro.i2c.mirela.board.i2cJNI.U2C_OpenDevice(J)J
at ro.i2c.mirela.board.i2cJNI.U2C_OpenDevice(Native Method)
at ro.i2c.mirela.board.i2c.U2C_OpenDevice(i2c.java:28)
at ro.i2c.mirela.board.I2CBoard.main(I2CBoard.java:8)

Answer 1

就像是一个链接错误，可能是你的.c文件函数名称不对，也许你应该发布你的.c 档案

线程＆＃34; main＆＃34;中的例外情况java.lang.UnsatisfiedLinkError中：ro.i2c.mirela.board.i2cJNI.U2C_OpenDevice（j）.J

1 个答案: