C-to-Java调用通过，但JVM以奇怪/无法解释的方式崩溃
第一个问题，所以我会直截了当。
我有一些将与Java连接的C代码; 我在JNI和主题上完成了我的作业。 这是代码：
C-部分：
#include #include #include #define CLASSPATH "-Djava.class.path=/scratch/workareas/JTest/Java/" //folder which contains .class files #define DEBUG 0 JNIEnv* create_vm(JavaVM ** jvm) { JNIEnv *env; JavaVMInitArgs vm_args; JavaVMOption options; strcpy(options.optionString, CLASSPATH); //fix for options.optionString = CLASSPATH; if (DEBUG) printf("optionString = %s\n", options.optionString); vm_args.version = JNI_VERSION_1_6; //JDK version. This indicates version 1.6 vm_args.nOptions = 1; vm_args.options = &options; vm_args.ignoreUnrecognized = 0; int ret = JNI_CreateJavaVM(jvm, (void**) &env, &vm_args); if (ret < 0) printf("\n<<<<>>>>\n"); return env; } int main(int argc, char* argv[]) { JNIEnv* env; JavaVM* jvm; printf("Creating JVM...."); env = create_vm(&jvm); printf(" done! [env = %p\tjvm = %p]\n", env, jvm); if (env == NULL) return 1; jclass myClass = NULL; jmethodID dispatchMessage = NULL; int counter = 0; //Obtaining Class myClass = (*env)->FindClass(env, "EventHandler"); printf("FindClass done! [%p]\n", myClass); //Obtaining Method ID if (myClass != NULL) dispatchMessage = (*env)->GetStaticMethodID(env, myClass, "dispatchEvent", "(I)V"); else printf("Unable to find the requested class\n"); printf("Calling dispatchEvent() [%p] ...\n", dispatchMessage); if (dispatchMessage != NULL) { // jstring newMessage = (*env)->NewStringUTF(env, "Test call::Called from C\n"); for(counter = 0; counter CallStaticVoidMethod(env, myClass, dispatchMessage, newMessage); } } printf("dispatchMessage() done!\n"); //Release resources. printf("Releasing resources..."); (*jvm)->DestroyJavaVM(jvm); printf(" done! Exiting.\n"); return 0; } Java部分：
public class EventHandler { public static final int EVENT_CODE_E1 = 1; public static final int EVENT_CODE_E2 = 2; //... public static final int EVENT_CODE_E10 = 10; private static EventHandler instance = new EventHandler(); public EventHandler() { //TODO: create object here } public static EventHandler getInstance() { if(instance == null) instance = new EventHandler(); return instance; } public static void dispatchEvent(int eventCode) { switch(eventCode) { case EVENT_CODE_E1: System.out.println("Event 1 firing!"); getInstance().onEventE1(); break; case EVENT_CODE_E2: System.out.println("Event 2 just fired!"); break; //case default: System.out.println("Unknown event with ID: "+eventCode+" triggered!"); break; } } private void onEventE1() { System.out.println("heyoooo"); } }
现在问题是：在执行10次调用之后，这就是我得到的输出：
Creating JVM.... done! [env = 0x80e6d20 jvm = 0x177e6a4] FindClass done! [0x80e7c78] Calling dispatchEvent() [0x90b3fe8c] ... Unknown event with ID: 0 triggered! Event 1 firing! heyoooo Event 2 just fired! Unknown event with ID: 3 triggered! Unknown event with ID: 4 triggered! Unknown event with ID: 5 triggered! Unknown event with ID: 6 triggered! Unknown event with ID: 7 triggered! Unknown event with ID: 8 triggered! Unknown event with ID: 9 triggered! dispatchMessage() done! Releasing resources... done! Exiting. # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x632e6176, pid=14752, tid=3077634256 # # JRE version: 6.0_26-b03 # Java VM: Java HotSpot(TM) Server VM (20.1-b02 mixed mode linux-x86 ) # Problematic frame: # C 0x632e6176 [error occurred during error reporting (printing problematic frame), id 0xb] # An error report file with more information is saved as: # /scratch/workareas/JTest/hs_err_pid14752.log # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp # Aborted
我不知道是什么导致这次崩溃。 我查看了日志，没有任何意义。 有人愿意帮忙吗？ 🙂
编辑：我还附上了日志，万一有人发现有趣的东西。 我尝试用JNITest的objdump交叉引用它并尝试使用addr2line，它没有给我任何好处。 GDB会议在确定根本原因方面也无效。
# # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x632e6176, pid=14752, tid=3077634256 # # JRE version: 6.0_26-b03 # Java VM: Java HotSpot(TM) Server VM (20.1-b02 mixed mode linux-x86 ) # Problematic frame: # C 0x632e6176 [error occurred during error reporting (printing problematic frame), id 0xb] # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp # --------------- THREAD --------------- Current thread is native thread siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR), si_addr=0x632e6176 Registers: EAX=0x00000000, EBX=0x0063dff4, ECX=0x0063e4e0, EDX=0x0063f360 ESP=0xbfd2f380, EBP=0x616a442d, ESI=0x00000000, EDI=0x00000000 EIP=0x632e6176, EFLAGS=0x00210246, CR2=0x632e6176 Top of Stack: (sp=0xbfd2f380) 0xbfd2f380: 7373616c 7461702e 732f3d68 74617263 0xbfd2f390: 772f6863 616b726f 73616572 65544a2f 0xbfd2f3a0: 4a2f7473 2f617661 00f7c100 00f8bad0 0xbfd2f3b0: b77108d0 0063dff4 00000000 00000000 0xbfd2f3c0: bfd2f3f8 2f09115f 15974820 00000000 0xbfd2f3d0: 00000000 00000000 00000001 08048400 0xbfd2f3e0: 00000000 00f81d90 004fbc0b 00f8aff4 0xbfd2f3f0: 00000001 08048400 00000000 08048421 Instructions: (pc=0x632e6176) 0x632e6156: [error occurred during error reporting (printing registers, top of stack, instructions near pc), id 0xb] Register to memory mapping: EAX=0x00000000 is an unknown value EBX=0x0063dff4: in /lib/libc.so.6 at 0x004e5000 ECX=0x0063e4e0: _IO_2_1_stdout_+0 in /lib/libc.so.6 at 0x004e5000 EDX=0x0063f360: in /lib/libc.so.6 at 0x004e5000 ESP=0xbfd2f380 is an unknown value EBP=0x616a442d is an unknown value ESI=0x00000000 is an unknown value EDI=0x00000000 is an unknown value Stack: [0xbfce0000,0xbfd30000], sp=0xbfd2f380, free space=316k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) C 0x632e6176 [error occurred during error reporting (printing native stack), id 0xb] --------------- PROCESS --------------- VM state:at safepoint (shutting down) VM Mutex/Monitor currently owned by a thread: ([mutex/lock_event]) [0x080e4aa0] Threads_lock - owner thread: 0x90b72000 Heap PSYoungGen total 9408K, used 322K [0xa9e40000, 0xaa8c0000, 0xb4640000) eden space 8064K, 4% used [0xa9e40000,0xa9e90b48,0xaa620000) from space 1344K, 0% used [0xaa770000,0xaa770000,0xaa8c0000) to space 1344K, 0% used [0xaa620000,0xaa620000,0xaa770000) PSOldGen total 21504K, used 0K [0x94e40000, 0x96340000, 0xa9e40000) object space 21504K, 0% used [0x94e40000,0x94e40000,0x96340000) PSPermGen total 16384K, used 1751K [0x90e40000, 0x91e40000, 0x94e40000) object space 16384K, 10% used [0x90e40000,0x90ff5f40,0x91e40000) Code Cache [0xb470f000, 0xb494f000, 0xb770f000) total_blobs=90 nmethods=0 adapters=58 free_code_cache=50039104 largest_free_block=0 Dynamic libraries: 00110000-00133000 r-xp 00000000 08:06 1710021 /usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386/libjava.so 00133000-00135000 rw-p 00023000 08:06 1710021 /usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386/libjava.so 00135000-00148000 r-xp 00000000 08:06 1845308 /lib/libnsl-2.12.1.so 00148000-00149000 r--p 00012000 08:06 1845308 /lib/libnsl-2.12.1.so 00149000-0014a000 rw-p 00013000 08:06 1845308 /lib/libnsl-2.12.1.so 0014a000-0014c000 rw-p 00000000 00:00 0 00154000-0015a000 r-xp 00000000 08:06 1845309 /lib/libnss_compat-2.12.1.so 0015a000-0015b000 r--p 00006000 08:06 1845309 /lib/libnss_compat-2.12.1.so 0015b000-0015c000 rw-p 00007000 08:06 1845309 /lib/libnss_compat-2.12.1.so 0015c000-00166000 r-xp 00000000 08:06 1845311 /lib/libnss_files-2.12.1.so 00166000-00167000 r--p 00009000 08:06 1845311 /lib/libnss_files-2.12.1.so 00167000-00168000 rw-p 0000a000 08:06 1845311 /lib/libnss_files-2.12.1.so 0019d000-001c1000 r-xp 00000000 08:06 1845306 /lib/libm-2.12.1.so 001c1000-001c2000 r--p 00023000 08:06 1845306 /lib/libm-2.12.1.so 001c2000-001c3000 rw-p 00024000 08:06 1845306 /lib/libm-2.12.1.so 001c3000-001c6000 ---p 00000000 00:00 0 001c6000-00214000 rwxp 00000000 00:00 0 00243000-00244000 ---p 00000000 00:00 0 00244000-002c4000 rwxp 00000000 00:00 0 002c4000-002c7000 ---p 00000000 00:00 0 002c7000-00315000 rwxp 00000000 00:00 0 0032d000-00342000 r-xp 00000000 08:06 1845316 /lib/libpthread-2.12.1.so 00342000-00343000 ---p 00015000 08:06 1845316 /lib/libpthread-2.12.1.so 00343000-00344000 r--p 00015000 08:06 1845316 /lib/libpthread-2.12.1.so 00344000-00345000 rw-p 00016000 08:06 1845316 /lib/libpthread-2.12.1.so 00345000-00347000 rw-p 00000000 00:00 0 00347000-0034a000 ---p 00000000 00:00 0 0034a000-00398000 rwxp 00000000 00:00 0 003ba000-003c9000 r-xp 00000000 08:06 1710024 /usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386/libzip.so 003c9000-003cb000 rw-p 0000e000 08:06 1710024 /usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386/libzip.so 003cb000-003ce000 ---p 00000000 00:00 0 003ce000-0044c000 rwxp 00000000 00:00 0 0044c000-0044f000 ---p 00000000 00:00 0 0044f000-004cd000 rwxp 00000000 00:00 0 004e5000-0063c000 r-xp 00000000 08:06 1845302 /lib/libc-2.12.1.so 0063c000-0063e000 r--p 00157000 08:06 1845302 /lib/libc-2.12.1.so 0063e000-0063f000 rw-p 00159000 08:06 1845302 /lib/libc-2.12.1.so 0063f000-00642000 rw-p 00000000 00:00 0 00642000-00643000 ---p 00000000 00:00 0 00643000-006c3000 rwxp 00000000 00:00 0 0077a000-0077c000 r-xp 00000000 08:06 1845305 /lib/libdl-2.12.1.so 0077c000-0077d000 r--p 00001000 08:06 1845305 /lib/libdl-2.12.1.so 0077d000-0077e000 rw-p 00002000 08:06 1845305 /lib/libdl-2.12.1.so 008ec000-008ed000 ---p 00000000 00:00 0 008ed000-0096d000 rwxp 00000000 00:00 0 0098b000-0098c000 r-xp 00000000 00:00 0 [vdso] 00991000-00992000 ---p 00000000 00:00 0 00992000-00a12000 rwxp 00000000 00:00 0 00a50000-00a57000 r-xp 00000000 08:06 1845318 /lib/librt-2.12.1.so 00a57000-00a58000 r--p 00006000 08:06 1845318 /lib/librt-2.12.1.so 00a58000-00a59000 rw-p 00007000 08:06 1845318 /lib/librt-2.12.1.so 00c40000-00c49000 r-xp 00000000 08:06 1845313 /lib/libnss_nis-2.12.1.so 00c49000-00c4a000 r--p 00008000 08:06 1845313 /lib/libnss_nis-2.12.1.so 00c4a000-00c4b000 rw-p 00009000 08:06 1845313 /lib/libnss_nis-2.12.1.so 00c76000-00c81000 r-xp 00000000 08:06 1710020 /usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386/libverify.so 00c81000-00c82000 rw-p 0000b000 08:06 1710020 /usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386/libverify.so 00e31000-00e34000 ---p 00000000 00:00 0 00e34000-00e82000 rwxp 00000000 00:00 0 00f6e000-00f8a000 r-xp 00000000 08:06 1845299 /lib/ld-2.12.1.so 00f8a000-00f8b000 r--p 0001b000 08:06 1845299 /lib/ld-2.12.1.so 00f8b000-00f8c000 rw-p 0001c000 08:06 1845299 /lib/ld-2.12.1.so 00f8c000-0173e000 r-xp 00000000 08:06 1710009 /usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386/server/libjvm.so 0173e000-01792000 rw-p 007b1000 08:06 1710009 /usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386/server/libjvm.so 01792000-01bb0000 rw-p 00000000 00:00 0 08048000-08049000 r-xp 00000000 08:11 3670021 /scratch/workareas/JTest/JNItest 08049000-0804a000 r--p 00000000 08:11 3670021 /scratch/workareas/JTest/JNItest 0804a000-0804b000 rw-p 00001000 08:11 3670021 /scratch/workareas/JTest/JNItest 080e2000-08103000 rw-p 00000000 00:00 0 [heap] 90734000-90934000 r--p 00000000 08:06 919903 /usr/lib/locale/locale-archive 90934000-90968000 rw-p 00000000 00:00 0 90968000-90b00000 r--s 03029000 08:06 1583846 /usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/rt.jar 90b00000-90ba1000 rw-p 00000000 00:00 0 90ba1000-90c00000 ---p 00000000 00:00 0 90c5b000-90c63000 rw-p 00000000 00:00 0 90c63000-90c7b000 rw-p 00000000 00:00 0 90c7b000-90c86000 rw-p 00000000 00:00 0 90c86000-90d23000 rw-p 00000000 00:00 0 90d23000-90d2b000 rw-p 00000000 00:00 0 90d2b000-90d43000 rw-p 00000000 00:00 0 90d43000-90d4e000 rw-p 00000000 00:00 0 90d4e000-90deb000 rw-p 00000000 00:00 0 90deb000-90df1000 rw-p 00000000 00:00 0 90df1000-90e3f000 rw-p 00000000 00:00 0 90e3f000-91e40000 rw-p 00000000 00:00 0 91e40000-94e40000 rw-p 00000000 00:00 0 94e40000-96340000 rw-p 00000000 00:00 0 96340000-a9e40000 rw-p 00000000 00:00 0 a9e40000-aa8c0000 rw-p 00000000 00:00 0 aa8c0000-b4640000 rw-p 00000000 00:00 0 b464f000-b4658000 rw-p 00000000 00:00 0 b4658000-b470f000 rw-p 00000000 00:00 0 b470f000-b494f000 rwxp 00000000 00:00 0 b494f000-b770f000 rw-p 00000000 00:00 0 b770f000-b7711000 rw-p 00000000 00:00 0 b771a000-b771b000 r--p 002a1000 08:06 919903 /usr/lib/locale/locale-archive b771b000-b7723000 rw-s 00000000 08:06 1181409 /tmp/hsperfdata_rtrk/14752 (deleted) b7723000-b7724000 rw-p 00000000 00:00 0 b7724000-b7725000 ---p 00000000 00:00 0 b7725000-b7728000 rw-p 00000000 00:00 0 bfce4000-bfd30000 rwxp 00000000 00:00 0 [stack] bfd30000-bfd32000 rw-p 00000000 00:00 0 VM Arguments: java_command: Launcher Type: generic Environment Variables: PATH= USERNAME=rtrk LD_LIBRARY_PATH=/usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386:/usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386/server:/home/rtrk/workspace/UPnP/bin-pc/usr/local/lib: SHELL=/bin/bash DISPLAY=:0.0 Signal Handlers: SIGSEGV: [libjvm.so+0x725510], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGBUS: [libjvm.so+0x725510], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGFPE: [libjvm.so+0x5dff20], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGPIPE: [libjvm.so+0x5dff20], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGXFSZ: [libjvm.so+0x5dff20], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGILL: [libjvm.so+0x5dff20], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000 SIGUSR2: [libjvm.so+0x5e3160], sa_mask[0]=0x00000000, sa_flags=0x10000004 SIGHUP: [libjvm.so+0x5e2d40], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGINT: [libjvm.so+0x5e2d40], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGTERM: [libjvm.so+0x5e2d40], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGQUIT: [libjvm.so+0x5e2d40], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 --------------- SYSTEM --------------- OS:squeeze/sid uname:Linux 2.6.35-22-generic #33-Ubuntu SMP Sun Sep 19 20:34:50 UTC 2010 i686 libc:glibc 2.12.1 NPTL 2.12.1 rlimit: STACK 8192k, CORE 0k, NPROC infinity, NOFILE 1024, AS infinity load average:0.02 0.42 1.02 /proc/meminfo: MemTotal: 2060876 kB MemFree: 78596 kB Buffers: 231004 kB Cached: 1029676 kB SwapCached: 42504 kB Active: 711912 kB Inactive: 1193204 kB Active(anon): 399420 kB Inactive(anon): 251192 kB Active(file): 312492 kB Inactive(file): 942012 kB Unevictable: 0 kB Mlocked: 0 kB HighTotal: 1187784 kB HighFree: 18836 kB LowTotal: 873092 kB LowFree: 59760 kB SwapTotal: 1998844 kB SwapFree: 1841240 kB Dirty: 232 kB Writeback: 0 kB AnonPages: 613140 kB Mapped: 47840 kB Shmem: 6164 kB Slab: 54384 kB SReclaimable: 41476 kB SUnreclaim: 12908 kB KernelStack: 3072 kB PageTables: 7384 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 3029280 kB Committed_AS: 1775172 kB VmallocTotal: 122880 kB VmallocUsed: 7284 kB VmallocChunk: 108952 kB HardwareCorrupted: 0 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 4096 kB DirectMap4k: 16376 kB DirectMap4M: 892928 kB CPU:total 2 (1 cores per cpu, 1 threads per core) family 6 model 42 stepping 7, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz stepping : 7 cpu MHz : 3093.040 cache size : 6144 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt aes hypervisor lahf_lm ida arat pln pts bogomips : 6186.08 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz stepping : 7 cpu MHz : 3093.040 cache size : 6144 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt aes hypervisor lahf_lm ida arat pln pts bogomips : 6186.08 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: Memory: 4k page, physical 2060876k(78580k free), swap 1998844k(1841240k free) vm_info: Java HotSpot(TM) Server VM (20.1-b02) for linux-x86 JRE (1.6.0_26-b03), built on May 4 2011 01:04:10 by "java_re" with gcc 3.2.1-7a (J2SE release) time: Fri Dec 16 10:58:12 2011 elapsed time: 3 seconds
谢谢大家的努力:)
问题已经解决。
在搜索了一些之后，我发现了这篇文章http://docs.oracle.com/javase/1.4.2/docs/guide/jni/jni-12.html#JNI_OnLoad
在它的底部附近是如何传递多个选项以及如何命名它们的一个很好的例子。 结果-Xcheck：jni被传递为-DXcheck：jni（jni：pedantic也可以）并且在我将strcpy移出我的代码之后，我不再在最后获得崩溃转储。 我怀疑罪魁祸首是strcpy，但其中一个就是伎俩。
这是更新的代码位：
JNIEnv* create_vm(JavaVM ** jvm) { JNIEnv *env; JavaVMInitArgs vm_args; JavaVMOption options[2]; options[0].optionString = CLASSPATH; //"-Djava.class.path=/scratch/workareas/JTest/Java/" options[1].optionString = "-DXcheck:jni:pedantic"; vm_args.version = JNI_VERSION_1_6; //JDK version. This indicates version 1.6 vm_args.nOptions = 2; vm_args.options = options; vm_args.ignoreUnrecognized = JNI_TRUE; //drop unrecognized options int ret = JNI_CreateJavaVM(jvm, (void**) &env, &vm_args); if (ret < 0) printf("\n<<<<< Unable to Launch JVM >>>>>\n"); return env; }
对于它的价值，在这样的情况下，使用-Xcheck运行JVM：jni有时可以发现眼睛缺失的东西。
编辑：我也没有看到任何明显的东西。
我怀疑罪魁祸首是strcpy，但其中一个就是伎俩。
你的strcpy崩溃的原因是JavaVMOption只包含一个指向字符串的指针，当你分配你的字符串时你指向常量选项字符串，当你strcpy的东西你基本上你写的东西你的指针没分配。 当你第一次发布问题时，我甚至没想过会看到这样的错误。 抱歉。