{"id":1763,"date":"2016-08-17T08:31:15","date_gmt":"2016-08-17T08:31:15","guid":{"rendered":"http:\/\/blog.zhukunqian.com\/?p=1763"},"modified":"2016-08-18T01:47:10","modified_gmt":"2016-08-18T01:47:10","slug":"jni%e9%94%99%e8%af%af-unsatisfiedlinkerror","status":"publish","type":"post","link":"https:\/\/blog.zhukunqian.com\/?p=1763","title":{"rendered":"jni\u9519\u8bef UnsatisfiedLinkError"},"content":{"rendered":"

\u5f88\u4e45\u6ca1\u5199\u8fc7jni\u4e86\u3002\u8fd9\u6b21\u9879\u76ee\u4e2d\u7528\u5230\uff0c\u51c6\u5907\u4f7f\u7528vs2015\u751f\u6210dll\uff0c\u4f9bjava\u8c03\u7528\u3002\u6211\u7528premake5\u751f\u6210\u4e86vs2015\u9879\u76ee\uff0c\u4f46\u751f\u6210\u51fa\u6765\u7684dll\uff0c\u65e0\u6cd5\u5728java\u4e2d\u8c03\u7528\uff0c\u62a5\u4ee5\u4e0b\u9519\u8bef\uff1a<\/p>\n

Exception in thread "main" java.lang.UnsatisfiedLinkError: RecastLib.hello()V\r\n    at RecastLib.hello(Native Method)\r\n    at RecastLib.main(RecastLib.java:22)<\/pre>\n
\u4f7f\u7528vs2015\u4e2d\u7684\u5de5\u5177 dumpbin \u67e5\u770bdll\u4e2d\u7684\u65b9\u6cd5\uff1a<\/p>\n
          1    0 00001200 ?Java_RecastLib_hello@@YAXPEAUJNIEnv_@@PEAV_jobject@@@\r\nZ = ?Java_RecastLib_hello@@YAXPEAUJNIEnv_@@PEAV_jobject@@@Z (void __cdecl Java_R\r\necastLib_hello(struct JNIEnv_ *,class _jobject *))\r\n          2    1 00001220 ?_Java_RecastLib_hello@@YAXPEAUJNIEnv_@@PEAV_jobject@@\r\n@Z = ?_Java_RecastLib_hello@@YAXPEAUJNIEnv_@@PEAV_jobject@@@Z (void __cdecl _Jav\r\na_RecastLib_hello(struct JNIEnv_ *,class _jobject *))<\/pre>\n
\u53d1\u73b0 vs2015 \u7f16\u8bd1\u7684\u65b9\u6cd5\u540d\u5168\u90e8\u88ab\u6dfb\u52a0\u4e0a\u4e86@\u540e\u7f00\u3002<\/p>\n
\u6b63\u786e\u7684\u5e94\u8be5\u662f\uff1a<\/p>\n
    ordinal hint RVA      name\r\n\r\n          1    0 00011091 Java_RecastLib_hello = @ILT+140(Java_RecastLib_hello)<\/pre>\n
\u8fd9\u662f\u56e0\u4e3a vc++\u4e2d\u7684 Name Mangling<\/strong>:<\/p>\n
\tJNIEXPORT void JNICALL Java_RecastLib_hello\r\n\t\t(JNIEnv *, jobject);<\/pre>\n
\u5982\u679c\u8981\u5bfc\u51fa\u7684cpp\u4e2d\u4f7f\u7528\u4e86c++\u7279\u6027\uff0c\u5373\u4f7f\u6307\u5b9a\u4e3a extern “C” \u4e5f\u53d7Name Mangling\u7684\u5f71\u54cd\u3002<\/p>\n
\u8fd9\u91cc\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u00a0 java.def \u6587\u4ef6\u4e5f\u89e3\u51b3\u3002\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n
LIBRARY recastDll\r\nEXPORTS\r\n  Java_RecastLib_hello<\/pre>\n
\u7136\u540e\u5728vs2015\u7684\u94fe\u63a5\u5668\u4e2d\u5b9a\u4e49\uff1a<\/p>\n
\"\"<\/p>\n
\u8fd9\u6837\u5bfc\u51fa\u7684\u51fd\u6570\u5373\u4e0d\u4f1a\u53d7name mangling \u7684\u5f71\u54cd\u3002<\/p>\n
\u9664\u6b64\u4e4b\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u00a0 RegisterNatives \u7684\u65b9\u5f0f\u5c06\u51fd\u6570\u5165\u53e3\u6ce8\u5165java vm(\u4e24\u79cd\u8bd5\u5e76\u65e0\u6027\u80fd\u5dee\u5f02)\u3002<\/p>\n
\u5982\u4e0b\uff1a<\/p>\n
static JNINativeMethod s_methods[] = {\r\n\t{ "jniHello", "()V", (void*)Java_RecastLib_hello },\r\n\t{ "jniLoad",  "(Ljava\/lang\/String;)I", (void*)Java_RecastLib_load },\r\n\t{ "jniFind",  "(FFFFFF)Ljava\/util\/List;", (void*)Java_RecastLib_find }\r\n};\r\nJNIEXPORT jint JNICALL\r\nJNI_OnLoad(JavaVM *vm, void *reserved)\r\n{\r\n\tJNIEnv* env = NULL;\r\n\tif (vm->GetEnv((void**)&env, JNI_VERSION_1_8) != JNI_OK)\r\n\t{\r\n\t\treturn JNI_ERR;\r\n\t}\r\n\tjclass cls = env->FindClass("LRecastLib;");\r\n\tif (cls == NULL)\r\n\t{\r\n\t\treturn JNI_ERR;\r\n\t}\r\n\tint len = sizeof(s_methods) \/ sizeof(s_methods[0]);\r\n\tif (env->RegisterNatives(cls, s_methods, len) < 0)\r\n\t{\r\n\t\treturn JNI_ERR;\r\n\t}\r\n\treturn JNI_VERSION_1_8;\r\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u5f88\u4e45\u6ca1\u5199\u8fc7jni\u4e86\u3002\u8fd9\u6b21\u9879\u76ee\u4e2d\u7528\u5230\uff0c\u51c6\u5907\u4f7f\u7528vs2015\u751f\u6210dll\uff0c\u4f9bjava\u8c03 …<\/p>\n
\u7ee7\u7eed\u9605\u8bfb »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/posts\/1763"}],"collection":[{"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1763"}],"version-history":[{"count":4,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/posts\/1763\/revisions"}],"predecessor-version":[{"id":1769,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/posts\/1763\/revisions\/1769"}],"wp:attachment":[{"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1763"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1763"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}