java matlab 混合编程 Failed to find the required library mclmcrrt9_2.dll on java.library.path.

问题描述：

　　

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)

问题分析：

　　未安装matlab runtime运行环境，或运行环境版本不匹配

问题解决：

　　1. 安装MCR环境（E:MATLABR2017a oolboxcompilerdeploywin64MCRInstaller.exe）

　　　配置  path

　　　　　  C:Program FilesMATLABMATLAB Runtimev92 untimewin64

　　　配置

　　　　　MATLAB_JAVA

　　　　　D:installjavajdk1.8.0_181jre

　　　　  

　　2. 配置java环境

　　　　JAVA_HOME

　　　　D:installjavajdk1.8.0_181

　　　　

　　　    CLASSPATH

　　　　%JAVA_HOME%lib;%JAVA_HOME%libdt.jar;%JAVA_HOME%lib ools.jar

　　　　

　　　　 PATH

　　　　;%JAVA_HOME%jrein;%JAVA_HOME%in

　　

参考链接：

　　1.Matlab Compiler SDK 使用步骤及常见问题总结（全）

　　2.MATLAB MCR安装以解决GUI编程软件移植运行问题