在打包的 JavaFX“jlink”应用程序中找不到 JDBC 驱动程序

问题描述 投票：0回答：1

我已经从 Maven 存储库安装了 MariaDB-JDBC-Java 驱动程序 V 3.3.3。当我发出 

mvn clean javafx:jlink
时，生成的 Linux 应用程序未启动并出现错误，未找到驱动程序：

java.lang.ClassNotFoundException: org.mariadb.jdbc.Driver

命令 

mvn clean javafx:run
在 Linux 和 Windows 中运行良好。

请告诉我为什么当我将 mariadb java 连接器的依赖项写入 pom.xml 时，mvn 目标“javafx:jlink”就被破坏了？

我尝试用 

pom.xml
中的 mysql java 连接器替换 mariadb java 客户端，它具有完全相同的行为。

我希望打包的 java 应用程序通过驱动程序连接到 mariadb 容器，因为它在 cmd 行和 IntelliJ IDEA 上成功完成 - Windows 和 Arch Linux。

-----------------module-info.java

module org.leder.gldisplaymanager {
    requires javafx.controls;
    requires javafx.fxml;
    requires java.sql;


    opens org.leder.gldisplaymanager to javafx.fxml;
    exports org.leder.gldisplaymanager;
    exports org.leder.gldisplaymanager.gui;
    opens org.leder.gldisplaymanager.gui to javafx.fxml;

    uses java.sql.Driver;
}

更新：我编译了一个 IntelliJ 项目导入和 Linux 应用程序执行的最小示例，如下 -

预期结果： 

java.sql.SQLNonTransientConnectionException: Socket fail to connect to host:address=(host=localhost)(port=3306)(type=primary). Verbindungsaufbau abgelehnt

实际结果： 

java.sql.SQLException: No suitable driver found for jdbc:mariadb://localhost/display_manager

intelliJ_project 和 Linux_app

更新2：

pom.xml依赖如下：

        <dependency>
            <groupId>org.mariadb.jdbc</groupId>
            <artifactId>mariadb-java-client</artifactId>
            <version>3.3.3</version>
        </dependency>
java mariadb maven-3 mysql-connector
1个回答
0
投票

这是一个部分手动的、不完美的解决方案，但仍然可以执行。

步骤：

(1) 打开您的 https://drive.google.com/drive/folders/162vRPYNnSbE0xddLoNGQ2oPTWUtSmSlt?usp=sharing（intelliJ_project 和 Linux_app）

(2) 下载 mariadb.zip

(3) 解压 mariadb.zip

(4) 

cd mariadb

(5) 

mvn package

生成输出 -> target/mariadb-1.0-SNAPSHOT.jar

(6) 

mvn dependency:copy-dependencies -DoutputDirectory=target/libs

generate -> target/libs 包含该目录下的所有jar文件

(7) 

mvn javafx:jlink

生成->目标/应用程序目录

(8)执行命令

cp target/mariadb-1.0-SNAPSHOT.jar target/app/lib/

cp target/libs/*.jar  target/app/lib/

cp target/app/bin/app  target/app/bin/app.org

(9)编辑target/app/bin/app文件

#!/usr/bin/env sh

##############################################################################
##
##  hellofx start up script for UN*X
##
##############################################################################

# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
    ls=`ls -ld "$PRG"`
    link=`expr "$ls" : '.*-> \(.*\)$'`
    if expr "$link" : '/.*' > /dev/null; then
        PRG="$link"
    else
        PRG=`dirname "$PRG"`"/$link"
    fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/.." >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null

APP_NAME="hellofx"
APP_BASE_NAME=`basename "$0"`

# Add default JVM options here. You can also use JAVA_OPTS and HELLOFX_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS=""

# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"

warn () {
    echo "$*"
}

die () {
    echo
    echo "$*"
    echo
    exit 1
}

# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
  CYGWIN* )
    cygwin=true
    ;;
  Darwin* )
    darwin=true
    ;;
  MINGW* )
    msys=true
    ;;
  NONSTOP* )
    nonstop=true
    ;;
esac

CLASSPATH="$APP_HOME/lib/*"

JAVA_HOME="$APP_HOME"
JAVACMD="$JAVA_HOME/bin/java"

# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
    MAX_FD_LIMIT=`ulimit -H -n`
    if [ $? -eq 0 ] ; then
        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
            MAX_FD="$MAX_FD_LIMIT"
        fi
        ulimit -n $MAX_FD
        if [ $? -ne 0 ] ; then
            warn "Could not set maximum file descriptor limit: $MAX_FD"
        fi
    else
        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
    fi
fi

# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi

# For Cygwin, switch paths to Windows format before running java
if $cygwin ; then
    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
    JAVA_HOME="$APP_HOME"
    JAVACMD="$JAVA_HOME/bin/java"

    # We build the pattern for arguments to be converted via cygpath
    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
    SEP=""
    for dir in $ROOTDIRSRAW ; do
        ROOTDIRS="$ROOTDIRS$SEP$dir"
        SEP="|"
    done
    OURCYGPATTERN="(^($ROOTDIRS))"
    # Add a user-defined pattern to the cygpath arguments
    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
    fi
    # Now convert the arguments - kludge to limit ourselves to /bin/sh
    i=0
    for arg in "$@" ; do
        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option

        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
        else
            eval `echo args$i`="\"$arg\""
        fi
        i=$((i+1))
    done
    case $i in
        (0) set -- ;;
        (1) set -- "$args0" ;;
        (2) set -- "$args0" "$args1" ;;
        (3) set -- "$args0" "$args1" "$args2" ;;
        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
    esac
fi

# Escape application args
save () {
    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
    echo " "
}
APP_ARGS=$(save "$@")



# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $CDS_JVM_OPTS $JAVA_OPTS $HELLOFX_OPTS -classpath "\"$CLASSPATH\"" org.leder.mariadb.HelloApplication "$APP_ARGS"

# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
  cd "$(dirname "$0")"
fi

exec "$JAVACMD" "$@"

(10)试运行

./target/app/bin/app

将得到预期结果：java.sql.SQLNonTransientConnectionException：套接字无法连接到主机：地址=（主机= localhost）（端口= 3306）（类型=主要）。

总结

(1) 应用程序内容是通过Gradle插件修改的

The Badass Runtime Plugin
。我参考了https://github.com/beryx-gist/badass-runtime-example-javafx(beryx-gist / badass-运行时-示例-javafx 公开）

(2) 这个答案还不够好。 如果您已经知道如何执行手动步骤，您可以将上述内容重写为自动化的 Maven 配置。

最新问题
© www.soinside.com 2019 - 2024. All rights reserved.