CMakeLists.txt 这是项目树：
.
├── pom.yml
├── java-cef/. <------- the cloned java-cef repository
├── lib/ <------------- where builded jar cef and dependencies are stored
| ├── jogamp/gluegen/1.0/gluegen-1.0.jar
| ├── jogamp/jogl/1.0/jogl-1.0.jar
| └── org/cef/1.0/cef-1.0.jar
└── src/
我正在构建 JCEF 本机源，以下是以下命令：
# Build the JCEF natives and jar
cd java-cef
mkdir jcef_build && cd jcef_build
cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ..
make -j4
cd ../tools
./compile.sh linux64
./make_jar.sh linux64
# Install the CEF jar and it's jar dependencies into lib/ folder
cd ../../
mvn install:install-file -Dfile=java-cef/out/linux64/jcef.jar -DgroupId=org -DartifactId=cef -Dversion=1.0 -Dpackaging=jar -DlocalRepositoryPath=lib
mvn install:install-file -Dfile=java-cef/third_party/jogamp/jar/jogl-all-natives-linux-amd64.jar -DgroupId=jogamp -DartifactId=jogl -Dversion=1.0 -Dpackaging=jar -DlocalRepositoryPath=lib
mvn install:install-file -Dfile=java-cef/third_party/jogamp/jar/gluegen-rt.jar -DgroupId=jogamp -DartifactId=gluegen -Dversion=1.0 -Dpackaging=jar -DlocalRepositoryPath=lib
# Link to avoid ICU internal errors of CEF
ln -s $PWD/native/Release/icudtl.dat $JAVA_HOME/jre/bin/icudtl.dat
ln -s $PWD/native/Release/natives_blob.bin $JAVA_HOME/jre/bin/natives_blob.bin
ln -s $PWD/native/Release/snapshot_blob.bin $JAVA_HOME/jre/bin/snapshot_blob.bin
mvn install
这里是pom.xml：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>my.app</groupId>
<artifactId>app</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<dependencies>
<!-- JCEF dependencies -->
<dependency>
<groupId>org</groupId>
<artifactId>cef</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>jogamp</groupId>
<artifactId>gluegen</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>jogamp</groupId>
<artifactId>jogl</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- All about bash/bat creation -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>appassembler-maven-plugin</artifactId>
<version>2.0.0</version>
<configuration>
<programs>
<!-- generic -->
<program>
<mainClass>my.app.boot.Boot</mainClass>
<id>player</id>
<jvmSettings>
<extraArguments>
<extraArgument>-Djava.library.path=${project.basedir}/java-cef/jcef_build/native/Release:/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib</extraArgument>
</extraArguments>
</jvmSettings>
</program>
</programs>
<assembleDirectory>${project.basedir}</assembleDirectory>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>assemble</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
当src代码运行CefApp.getInstance(args, settings).getVersion();时，它返回null并引发以下错误：
Caused by: java.lang.UnsatisfiedLinkError: org.cef.CefApp.N_PreInitialize()Z
at org.cef.CefApp.N_PreInitialize(Native Method)
at org.cef.CefApp.access$000(CefApp.java:24)
at org.cef.CefApp$1.run(CefApp.java:162)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:301)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
...
java.lang.UnsatisfiedLinkError: org.cef.CefApp.N_GetVersion()Lorg/cef/CefApp$CefVersion;
at org.cef.CefApp.N_GetVersion(Native Method)
at org.cef.CefApp.getVersion(CefApp.java:235)
at my.app.boot.Browser.<init>(Browser.java:42)
at my.app.boot.Boot.main(Boot.java:52)
有什么想法吗？
答案 0 :(得分：0)
在CefApp.startup();的任何调用之前，先调用CefApp.getInstance() ，以使其加载libjcef.so。