我有用于测试的JNI代码（c ++）：
JNIEXPORT void JNICALL Java_zontwelg_Natives_kekTest__ (JNIEnv *env, jclass) {
printf("Kek test!\n");
}
虽然我在申请中说这个：
public static native void kekTest();
Java因消息而崩溃：
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000000006d12, pid=16652, tid=5520
#
# JRE version: Java(TM) SE Runtime Environment (7.0_79-b15) (build 1.7.0_79-b15)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (24.79-b02 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C 0x0000000000006d12
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\work\mc_client\nbproject\ZontWelg Minecraft\hs_err_pid16652.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
可以在此处找到完整的崩溃日志：http://pastebin.com/5UhV7NUm
有什么不对？使用jdk1.7.0_79从NetBeans 8.0.2运行应用程序。
更改了c ++上的代码
JNIEXPORT void JNICALL Java_zontwelg_Natives_kekTest__ (JNIEnv *env, jclass) {
std::cout << "kek test\n" << endl;
}
写给cout打印另一个错误：
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ff6cadf2869, pid=11168, tid=8776
#
# JRE version: Java(TM) SE Runtime Environment (8.0_60-b27) (build 1.8.0_60-b27)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.60-b23 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C [zmcload_64.exe+0x2869] std::operator<<<std::char_traits<char> >+0x49
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\work\mc_client\nbproject\ZontWelg Minecraft\hs_err_pid11168.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
完整登录pastebin。错误是指zmcload_64.exe+0x2869，这里是反汇编代码：
000000014000282F: 48 89 5C 24 50 mov qword ptr [rsp+50h],rbx
0000000140002834: 48 89 6C 24 58 mov qword ptr [rsp+58h],rbp
0000000140002839: 48 89 74 24 60 mov qword ptr [rsp+60h],rsi
000000014000283E: 48 89 7C 24 68 mov qword ptr [rsp+68h],rdi
0000000140002843: 4C 8B F2 mov r14,rdx
0000000140002846: 48 8B F9 mov rdi,rcx
0000000140002849: 33 ED xor ebp,ebp
000000014000284B: 40 38 2A cmp byte ptr [rdx],bpl
000000014000284E: 75 04 jne 0000000140002854
0000000140002850: 33 F6 xor esi,esi
0000000140002852: EB 15 jmp 0000000140002869
0000000140002854: 48 83 CE FF or rsi,0FFFFFFFFFFFFFFFFh
0000000140002858: 0F 1F 84 00 00 00 nop dword ptr [rax+rax]
00 00
0000000140002860: 48 FF C6 inc rsi
0000000140002863: 40 38 2C 32 cmp byte ptr [rdx+rsi],bpl
0000000140002867: 75 F7 jne 0000000140002860
0000000140002869: 48 8B 01 mov rax,qword ptr [rcx]
000000014000286C: 48 63 48 04 movsxd rcx,dword ptr [rax+4]
0000000140002870: 48 8B 5C 39 28 mov rbx,qword ptr [rcx+rdi+28h]
0000000140002875: 48 85 DB test rbx,rbx
0000000140002878: 7E 0A jle 0000000140002884
000000014000287A: 48 3B DE cmp rbx,rsi
000000014000287D: 7E 05 jle 0000000140002884
000000014000287F: 48 2B DE sub rbx,rsi
0000000140002882: EB 02 jmp 0000000140002886
0000000140002884: 33 DB xor ebx,ebx
0000000140002886: 48 89 7C 24 28 mov qword ptr [rsp+28h],rdi
000000014000288B: 48 8B 4C 39 48 mov rcx,qword ptr [rcx+rdi+48h]
0000000140002890: 48 85 C9 test rcx,rcx
0000000140002893: 74 07 je 000000014000289C
0000000140002895: 48 8B 01 mov rax,qword ptr [rcx]
0000000140002898: FF 50 08 call qword ptr [rax+8]
000000014000289B: 90 nop
答案 0 :(得分：1)
好的，我想出来了。
我试图从可执行文件调用本机函数。将项目重新编译为DLL解决了此错误。似乎是尝试将文本写入本地exe文件的标准输出，而不是jvm（或类似的东西）。
答案 1 :(得分：0)
在从Java代码调用本机方法之前，您可能忘记调用System.loadLibrary。
在使用本机方法之前，必须首先在内存中加载实现该方法的动态库。在Windows中，它将是通过编译调用printf的C / C ++代码生成的.dll。