スレッド "main"の例外java.lang.UnsatisfiedLinkError JavaからC++ DLLメソッドを呼び出すとき

Question

スレッド "main"で例外が発生しましたjava.lang.UnsatisfiedLinkError：メソッドinitizlizeを呼び出すときにFindElements.initialize（）V ）のFindElementsクラスです。付属の詳細をご覧ください。 私が理解できる限り、DLLはロードできますが、メソッドが呼び出されると例外がスローされます。私は手動でメソッドの署名を数回チェックして、それらが正しいことを確認しました。

"C:\Program Files\Java\jdk1.8.0_73\bin\java" -Didea.launcher.port=7532 "-Didea.launcher.bin.path=C:\Program Files (x86)\JetBrains\IntelliJ IDEA 14.0\bin" -Dfile.encoding=UTF-8 -classpath "C:\Users\Mike\Desktop\Summer_Research_2016\Gaze UI Automation\target\classes;C:\Program Files\Java\jdk1.8.0_73\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\rt.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_73\jre\lib\ext\zipfs.jar;C:\Users\Mike\Desktop\Summer_Research_2016\Gaze UI Automation\lib\jna-4.0.0.jar;C:\Users\Mike\Desktop\Summer_Research_2016\Gaze UI Automation\lib\jawin-stubs.jar;C:\Users\Mike\Desktop\Summer_Research_2016\Gaze UI Automation\lib\jawin.jar;C:\Users\Mike\Desktop\Summer_Research_2016\Gaze UI Automation\lib\JNativeHook.jar;C:\Users\Mike\Desktop\Summer_Research_2016\Gaze UI Automation\lib\commons-configuration-1.6.jar;C:\Users\Mike\Desktop\Summer_Research_2016\Gaze UI Automation\lib\jfxrt.jar;C:\Users\Mike\Desktop\Summer_Research_2016\Gaze UI Automation\lib\commons-lang-2.5.jar;C:\Users\Mike\Desktop\Summer_Research_2016\Gaze UI Automation\lib\commons-logging-1.1.1.jar;C:\Users\Mike\Desktop\Summer_Research_2016\Gaze UI Automation\lib\commons-collections-3.2.1.jar;C:\Users\Mike\.m2\repository\com\github\mmarquee\ui-automation\0.3.10\ui-automation-0.3.10.jar;C:\Users\Mike\.m2\repository\net\java\dev\jna\jna\4.3.0\jna-4.3.0.jar;C:\Users\Mike\.m2\repository\net\java\dev\jna\jna-platform\4.3.0\jna-platform-4.3.0.jar;C:\Users\Mike\.m2\repository\log4j\log4j\1.2.17\log4j-1.2.17.jar;C:\Users\Mike\.m2\repository\org\hamcrest\hamcrest-all\1.3\hamcrest-all-1.3.jar;C:\Users\Mike\.m2\repository\junit\junit\4.12\junit-4.12.jar;C:\Users\Mike\.m2\repository\org\mockito\mockito-core\2.0.28-beta\mockito-core-2.0.28-beta.jar;C:\Program Files (x86)\JetBrains\IntelliJ IDEA 14.0\lib\idea_rt.jar" com.intellij.rt.execution.application.AppMain testBetaUIFrame 
Exception in thread "main" java.lang.UnsatisfiedLinkError: FindElements.initialize()V 
    at FindElements.initialize(Native Method) 
    at testBetaUIFrame.main(testBetaUIFrame.java:10) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:497) 
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134) 

Process finished with exit code 1 

JavaクラスはJNIを呼び出す：

LibraryConfigurationクラスは、ライブラリパスに指定されたフォルダを追加します。

public class FindElements { 
    public native void initialize(); 
    public native String[] getElements(int type); 
    public native void invokeElement(int index, int type); 
    public native void uninitialize(); 

    static { 
     try { 
      LibraryConfiguration.addLibraryPath(
        LibraryConfiguration.changeFileSeparator("\\libs")); 
      System.loadLibrary("FindElements"); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
    } 
} 

FindElements.cpp

#include <windows.h> 
#include "stdafx.h" 
#include <stdio.h> 
#include "jni.h" 
#include "FindElements.h" 
#include <string> 
#include <math.h> 
#include <vector> 
#include "UIAutomationClient.h" 
#include "UIAutomation.h" 

#pragma comment(lib,"Ole64.lib") 
#pragma comment(lib,"User64.lib") 
#pragma comment(lib,"OleAut64.lib") 
using namespace std; 
int BUTTON = 0; 
int SPLITBUTTON = 1; 
int HYPERLINK = 2; 
int TREEITEM = 3; 
int TABITEM = 4; 
int MENUITEM = 5; 
int EDIT = 6; 
int LISTITEM = 7; 
IUIAutomation *g_pAutomation; 
IUIAutomationElement *parent = NULL; 

IUIAutomationElementArray *cbuttons = NULL;//0 
IUIAutomationElementArray *cSplitButtons = NULL;//1 
IUIAutomationElementArray *cHyperLinks = NULL;//2 
IUIAutomationElementArray *cTreeItems = NULL;//3 
IUIAutomationElementArray *cTabItems = NULL;//4 
IUIAutomationElementArray *cMenuItems = NULL;//5 
IUIAutomationElementArray *cEdit = NULL;//6 
IUIAutomationElementArray *cListItem = NULL;//7 
unsigned int DISTANCE = 75; 
string& BstrToStdString(const BSTR bstr, string& dst, int cp = CP_UTF8) 
{ 
...... 
} 
// conversion with temp. 
string BstrToStdString(BSTR bstr, int cp = CP_UTF8) 
{ 
    string str; 
    BstrToStdString(bstr, str, cp); 
    return str; 
} 
extern "C" { 
    IUIAutomationElementArray* GetElements(IUIAutomationElement* pParent, VARIANT varProp) 
    { 
     if (pParent == NULL) 
     { 
      return NULL; 
     } 
     IUIAutomationCondition* pCondition = NULL; 
     IUIAutomationCondition* pEnabledCondition = NULL; 
     IUIAutomationCondition* pCombinedCondition = NULL; 
     IUIAutomationElementArray* pFound = NULL; 
     g_pAutomation->CreatePropertyCondition(UIA_ControlTypePropertyId, varProp, &pCondition); 
     if (pCondition == NULL) 
      goto cleanup; 

     // Create a property condition for the enabled property. 
     varProp.vt = VT_BOOL; 
     varProp.boolVal = VARIANT_TRUE; 
     g_pAutomation->CreatePropertyCondition(UIA_IsEnabledPropertyId, varProp, &pEnabledCondition); 
     if (pEnabledCondition == NULL) 
      goto cleanup; 

     // Combine the conditions. 
     g_pAutomation->CreateAndCondition(pCondition, pEnabledCondition, &pCombinedCondition); 
     if (pCombinedCondition == NULL) 
      goto cleanup; 

     // Find the matching elements. Note that if the scope is changed to TreeScope_Descendants, 
     // system buttons on the caption bar will be found as well. 
     pParent->FindAll(TreeScope_Descendants, pCombinedCondition, &pFound); 

    cleanup: 
     if (pCondition != NULL) 
      pCondition->Release(); 

...... 

     return pFound; 
    } 
    IUIAutomationElement* GetContainingWindow(IUIAutomationElement* pChild) 
    { 

     if (pChild == NULL) 
      return NULL; 

     IUIAutomationElement* pDesktop = NULL; 
     HRESULT hr = g_pAutomation->GetRootElement(&pDesktop); 
     if (FAILED(hr)) 
      return NULL; 

     BOOL same; 
     g_pAutomation->CompareElements(pChild, pDesktop, &same); 
     if (same) 
     { 
      pDesktop->Release(); 
      return NULL; // No parent, so return NULL. 
     } 

     IUIAutomationElement* pParent = NULL; 
     IUIAutomationElement* pNode = pChild; 

     // Create the treewalker. 
     IUIAutomationTreeWalker* pWalker = NULL; 
     g_pAutomation->get_ControlViewWalker(&pWalker); 
     if (pWalker == NULL) 
      goto cleanup; 

     // Walk up the tree. 
     while (TRUE) 
     { 
      hr = pWalker->GetParentElement(pNode, &pParent); 
      if (FAILED(hr) || pParent == NULL) 
      { 
       break; 
      } 
      g_pAutomation->CompareElements(pParent, pDesktop, &same); 
      if (same) 
      { 
       pDesktop->Release(); 
       pParent->Release(); 
       pWalker->Release(); 
       // Reached desktop, so return next element below it. 
       return pNode; 
      } 
      if (pNode != pChild) // Do not release the in-param. 
       pNode->Release(); 
      pNode = pParent; 
     } 

    cleanup: 
     if ((pNode != NULL) && (pNode != pChild)) 
      pNode->Release(); 

...... 

     return NULL; 
    } 
    JNIEXPORT void JNICALL Java_FindElements_initialize(JNIEnv *env, jobject obj) 
    { 
     CoInitializeEx(NULL, COINIT_MULTITHREADED); 
     HRESULT hr = CoCreateInstance(__uuidof(CUIAutomation), NULL, 
      CLSCTX_INPROC_SERVER, __uuidof(IUIAutomation), 
      (void**)&g_pAutomation); 
     POINT pt; 
     GetPhysicalCursorPos(&pt); 

     IUIAutomationElement *pAtMouse; 
     hr = g_pAutomation->ElementFromPoint(pt, &pAtMouse); 

     parent = GetContainingWindow(pAtMouse); 

     hr = parent->SetFocus(); 

    } 
    JNIEXPORT jobjectArray JNICALL Java_FindElements_getElements(JNIEnv *env, jobject obj, jint type) 
    { 
     jobjectArray objArray; 
     vector<string> name, index; 
     vector<string> left, top, right, bottom; 
     int k = 0; 
     string str, str1, str2; 
     HRESULT hr; 
     if (type == BUTTON) 
     {......} 
     objArray = (jobjectArray)env->NewObjectArray(k, 
      env->FindClass("java/lang/String"), 
      env->NewStringUTF("")); 
     for (int i = 0; i < k; i++) 
     { 
      string st = index.at(i) + "l" + left.at(i) + "t" + top.at(i) + "r" + right.at(i) + "b" + bottom.at(i) + " " + name.at(i); 
      const char * n = st.c_str(); 
      env->SetObjectArrayElement(objArray, i, env->NewStringUTF(n)); 
     } 
     return objArray; 
    } 

    JNIEXPORT void JNICALL Java_FindElements_invokeElement(JNIEnv *, jobject, jint index, jint type) 
    { 
     IUIAutomationElement *cele = NULL;//used to find the invoke pattern 
     IUIAutomationInvokePattern *pPattern = NULL; 
     HRESULT hr; 
     if (type == BUTTON) 
     {......  } 
     cele = NULL; 
    } 

    JNIEXPORT void JNICALL Java_FindElements_uninitialize(JNIEnv *env, jobject obj) 
    { 
     if (cbuttons != NULL) 
     {......  } 

    } 
} 

FindElements.h javahはから

/* DO NOT EDIT THIS FILE - it is machine generated */ 
#include "jni.h" 
/* Header for class FindElements */ 

#ifndef _Included_FindElements 
#define _Included_FindElements 
#ifdef __cplusplus 
extern "C" { 
#endif 
/* 
* Class:  FindElements 
* Method: initialize 
* Signature:()V 
*/ 
JNIEXPORT void JNICALL Java_FindElements_initialize 
    (JNIEnv *, jobject); 

/* 
* Class:  FindElements 
* Method: getElements 
* Signature: (I)[Ljava/lang/String; 
*/ 
JNIEXPORT jobjectArray JNICALL Java_FindElements_getElements 
    (JNIEnv *, jobject, jint); 

/* 
* Class:  FindElements 
* Method: invokeElement 
* Signature: (II)V 
*/ 
JNIEXPORT void JNICALL Java_FindElements_invokeElement 
    (JNIEnv *, jobject, jint, jint); 

/* 
* Class:  FindElements 
* Method: uninitialize 
* Signature:()V 
*/ 
JNIEXPORT void JNICALL Java_FindElements_uninitialize 
    (JNIEnv *, jobject); 

#ifdef __cplusplus 
} 
#endif 
#endif 

FindElements.h：

（更新）まだ同じエラー。

/* DO NOT EDIT THIS FILE - it is machine generated */ 
#include "jni.h" 
/* Header for class FindElements */ 

#ifndef _Included_FindElements 
#define _Included_FindElements 
#ifdef __cplusplus 
extern "C" { 
#endif 
/* 
* Class:  FindElements 
* Method: initialize 
* Signature:()V 
*/ 
JNIEXPORT void JNICALL Java_FindElements_initialize 
    (JNIEnv *, jobject); 

/* 
* Class:  FindElements 
* Method: getElements 
* Signature: (I)[Ljava/lang/String; 
*/ 
JNIEXPORT jobjectArray JNICALL Java_FindElements_getElements 
    (JNIEnv *, jobject, jint); 

/* 
* Class:  FindElements 
* Method: invokeElement 
* Signature: (II)V 
*/ 
JNIEXPORT void JNICALL Java_FindElements_invokeElement 
    (JNIEnv *, jobject, jint, jint); 

/* 
* Class:  FindElements 
* Method: uninitialize 
* Signature:()V 
*/ 
JNIEXPORT void JNICALL Java_FindElements_uninitialize 
    (JNIEnv *, jobject); 

#ifdef __cplusplus 
} 
#endif 
#endif 

Visual Studio内のプロパティ設定で必要なDLLへのパスを追加しました。

追加のディレクトリC++一般

追加のディレクトリリンカ

は誰かの提案を提案することはできますか？

Answer 1

コードに奇妙なことがあるようです。あなたはjavahはを使用して、ヘッダファイルを生成しましたあなたは

JNIEXPORT void JNICALL Java_FindElements_initialize(JNIEnv *env, jobject obj) 

を持っていながら、あなたのコード（CPP）で

JNIEXPORT jboolean JNICALL Java_EyeXJavaWrapper_initialize 
    (JNIEnv *, jobject); 

を：

あなたのヘッダーには、次のあり？

javah -jni -cp where_your_class_files_are FindElements 

また、FindElementsをパッケージ内に配置することもお勧めします。あなたはここでJNIの非常に基本的なチュートリアルを見つけることができます：http://jnicookbook.owsiak.org/recipe-No-001/