java matlab 混合編程 Failed to find the required library mclmcrrt9_2.dll on java.library.path.

問題描述：

　　

Exception in thread "main" java.lang.UnsatisfiedLinkError: Failed to find the required library mclmcrrt9_2.dll on java.library.path.
This library is typically installed along with MATLAB or the MATLAB Runtime. Its absence may indicate an issue with that installation or 
the current path configuration, or a mismatch with the architecture of the Java interpreter on the path.
MATLAB Runtime version this component is attempting to use: 9.2.
Java interpreter architecture: win64.

    at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$ProxyLibraryDir.get(MCRConfiguration.java:324)
    at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$ProxyLibraryDir.<clinit>(MCRConfiguration.java:334)
    at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration.getProxyLibraryDir(MCRConfiguration.java:339)
    at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$MCRRoot.get(MCRConfiguration.java:64)
    at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$MCRRoot.<clinit>(MCRConfiguration.java:76)
    at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration.getMCRRoot(MCRConfiguration.java:81)
    at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$ModuleDir.<clinit>(MCRConfiguration.java:53)
    at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration.getModuleDir(MCRConfiguration.java:58)
    at com.mathworks.toolbox.javabuilder.internal.MWMCR.<clinit>(MWMCR.java:1699)
    at nsgaii.NsgaiiMCRFactory.newInstance(NsgaiiMCRFactory.java:55)
    at nsgaii.NsgaiiMCRFactory.newInstance(NsgaiiMCRFactory.java:66)
    at nsgaii.NsgaiiOperator.<init>(NsgaiiOperator.java:167)
    at optimization.algorithm.nsgaii.NSGAII.main(NSGAII.java:33)

問題分析：

　　未安裝matlab runtime運行環境，或運行環境版本不匹配

問題解決：

　　1. 安裝MCR環境（E:\MATLAB\R2017a\toolbox\compiler\deploy\win64\MCRInstaller.exe）

　　　配置  path

　　　　　  C:\Program Files\MATLAB\MATLAB Runtime\v92\runtime\win64

　　　配置

　　　　　MATLAB_JAVA

　　　　　D:\install\java\jdk1.8.0_181\jre

　　　　  

　　2. 配置java環境

　　　　JAVA_HOME

　　　　D:\install\java\jdk1.8.0_181

　　　　

　　　    CLASSPATH

　　　　%JAVA_HOME%\lib;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar

　　　　

　　　　 PATH

　　　　;%JAVA_HOME%\jre\bin;%JAVA_HOME%\bin

　　

參考連接：

　　1.Matlab Compiler SDK 使用步驟及常見問題總結（全）

　　2.MATLAB MCR安裝以解決GUI編程軟件移植運行問題