Java Sprint boot 2.1.6 can'；不要作为系统服务启动

我正在尝试在AmazonLinuxEC2实例上启动一个SpringBoot应用程序作为服务

我正在将服务打包为：

$ mvn clean package spring-boot:repackage -Dstart-class=com.acme.MyMicroserviceApplication

当我手动启动服务（不启动服务）时，它会正确运行：

$ /usr/bin/java -Djava.security.egd=file:/dev/./urandom -Dspring.profiles.active=pro -server -d64 -Xms256m -Xmx2048m -Xss256m -XX:+UseParallelGC -XX:MaxHeapSize=2048m -XX:MaxMetaspaceSize=1024m -XX:MaxHeapFreeRatio=75 -XX:+HeapDumpOnOutOfMemoryError -jar /home/ec2-user/jars/my-microservice-1.0.0-RELEASE.jar

信息[主要] org.springframework.boot.web.embedded.tomcat.TomcatWebServer:tomcat 已在端口8080（http）上启动，上下文路径为“”INFO[main] org.springframework.boot.StartupInfoLogger:已启动 FaceBookServiceApplication12.17秒（JVM运行12.861） 信息[http-nio-8080-exec-1]org.apache.juli.logging.DirectJDKLog: 正在初始化Spring DispatcherServlet“DispatcherServlet”信息 [http-nio-8080-exec-1] org.springframework.web.servlet.FrameworkServlet:初始化servlet “dispatcherServlet”信息[http-nio-8080-exec-1] org.springframework.web.servlet.FrameworkServlet:已完成 23毫秒内初始化

但是当我启动服务时，Spring Boot找不到类：

• org.springframework.boot.loader.JarLauncher

错误是：

my-microservice[27205]: Error: Could not find or load main class org.springframework.boot.loader.JarLauncher
systemd[1]: squint-facebook.service: main process exited, code=exited, status=1/FAILURE
systemd[1]: Unit my-micro.service entered failed state.
systemd[1]: my-micro.service failed.
systemd[1]: Stopped my-microservice.

我的服务文件是：

• /etc/systemd/system/my-micro.service

---

---

我的项目的pom.xml文件是：

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.6.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.teamknowlogy.squint</groupId>
    <artifactId>my-microservice</artifactId>
    <version>1.0.0-RELEASE</version>
    <name>my-microservice</name>
    <description>...</description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.SR1</spring-cloud.version>
        <spring-session.version>1.3.5.RELEASE</spring-session.version>
        <maven.compiler.target>1.8</maven.compiler.target>
        <maven.compiler.source>1.8</maven.compiler.source>
        <!-- The main class to start by executing "java -jar" -->
        <start-class>com.acme.MyMicroserviceApplication</start-class>
        <spring.boot.mainclass>com.acme.MyMicroserviceApplication</spring.boot.mainclass>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-rest</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-aws</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.session</groupId>
            <artifactId>spring-session-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-cache</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.retry</groupId>
            <artifactId>spring-retry</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-loader -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-loader</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <artifactId>auth</artifactId>
            <groupId>software.amazon.awssdk</groupId>
        </dependency>
        <dependency>
            <artifactId>aws-core</artifactId>
            <groupId>software.amazon.awssdk</groupId>
        </dependency>
        <dependency>
            <artifactId>s3</artifactId>
            <groupId>software.amazon.awssdk</groupId>
        </dependency>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>23.0</version>
        </dependency>
        <dependency>
            <groupId>net.sourceforge.htmlunit</groupId>
            <artifactId>htmlunit</artifactId>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt</artifactId>
            <version>0.9.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.jsoup/jsoup -->
        <dependency>
            <groupId>org.jsoup</groupId>
            <artifactId>jsoup</artifactId>
            <version>1.12.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-pool2 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- https://mvnrepository.com/artifact/software.amazon.awssdk/bom -->
            <dependency>
                <groupId>software.amazon.awssdk</groupId>
                <artifactId>bom</artifactId>
                <version>2.6.5</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- https://spring.io/projects/spring-session -->
            <dependency>
                <groupId>org.springframework.session</groupId>
                <artifactId>spring-session-bom</artifactId>
                <version>Bean-SR3</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
        </resources>
        <!-- <sourceDirectory>src</sourceDirectory> -->
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <skipTests>true</skipTests>
                    <source>1.8</source>
                    <target>1.8</target>
                    <executable>true</executable>
                    <mainClass>${spring.boot.mainclass}</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                        <configuration>
                            <mainClass>${spring.boot.mainclass}</mainClass>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

Amazon Linux实例的版本：

$ cat /etc/*release
NAME="Amazon Linux"
VERSION="2"
ID="amzn"
ID_LIKE="centos rhel fedora"
VERSION_ID="2"
PRETTY_NAME="Amazon Linux 2"
ANSI_COLOR="0;33"
CPE_NAME="cpe:2.3:o:amazon:amazon_linux:2"
HOME_URL="https://amazonlinux.com/"
Amazon Linux release 2 (Karoo)

---

在单元文件环境配置中使用外壳参数扩展（

$

）：

EnvironmentFile=/etc/sysconfig/my-microservice
Environment="JAVA_HOME=$(dirname $(dirname $(readlink $(readlink $(which java)))))"
Environment="PATH=$PATH:$JAVA_HOME/bin"
Environment="CLASSPATH=.:$JAVA_HOME/jre/lib:$JAVA_HOME/lib"
Environment="SPRING_PROFILES_ACTIVE=pro"
Environment="JAVA_OPTS=-Djava.security.egd=file:/dev/./urandom -Dspring.profiles.active=pro -server -d64 -Xms256m -Xmx2048m -Xss256m -XX:+UseParallelGC -XX:MaxHeapSize=2048m -XX:MaxMetaspaceSize=1024m -XX:MaxHeapFreeRatio=75 -XX:+HeapDumpOnOutOfMemoryError"

:

环境=设置已执行进程的环境变量。拿 以空格分隔的变量赋值列表。此选项可能是 多次指定，在这种情况下，所有列出的变量都将 设置如果同一变量设置两次，则将使用后面的设置 覆盖先前的设置。如果将空字符串分配给此 选项，则重置环境变量列表，所有之前的 作业没有效果。变量扩展不在内部执行 但是，字符串可以进行说明符扩展美元字符 没有特殊意义。如果需要指定一个包含 对于变量的空格或等号，请使用双引号（“）作为 任务

---

我建议在应用程序的常规

setenv.sh

文件中定义环境变量。

在单元文件环境配置中使用shell参数扩展（

$

）：

EnvironmentFile=/etc/sysconfig/my-microservice
Environment="JAVA_HOME=$(dirname $(dirname $(readlink $(readlink $(which java)))))"
Environment="PATH=$PATH:$JAVA_HOME/bin"
Environment="CLASSPATH=.:$JAVA_HOME/jre/lib:$JAVA_HOME/lib"
Environment="SPRING_PROFILES_ACTIVE=pro"
Environment="JAVA_OPTS=-Djava.security.egd=file:/dev/./urandom -Dspring.profiles.active=pro -server -d64 -Xms256m -Xmx2048m -Xss256m -XX:+UseParallelGC -XX:MaxHeapSize=2048m -XX:MaxMetaspaceSize=1024m -XX:MaxHeapFreeRatio=75 -XX:+HeapDumpOnOutOfMemoryError"

:

环境=设置已执行进程的环境变量。获取 以空格分隔的变量赋值列表。此选项可以是 多次指定，在这种情况下，所有列出的变量都将 设置。如果同一变量设置两次，则将使用后面的设置 重写以前的设置。如果将空字符串分配给此 选项，则重置环境变量列表，所有之前的 赋值无效。变量展开不在内部执行 但是，字符串可以进行说明符扩展。 没有特殊意义。如果需要指定一个包含 对于变量的空格或等号，请使用双引号（“）作为 任务

我建议在应用程序的常规

setenv.sh

文件中定义环境变量

EnvironmentFile=/etc/sysconfig/my-microservice
Environment="JAVA_HOME=$(dirname $(dirname $(readlink $(readlink $(which java)))))"
Environment="PATH=$PATH:$JAVA_HOME/bin"
Environment="CLASSPATH=.:$JAVA_HOME/jre/lib:$JAVA_HOME/lib"
Environment="SPRING_PROFILES_ACTIVE=pro"
Environment="JAVA_OPTS=-Djava.security.egd=file:/dev/./urandom -Dspring.profiles.active=pro -server -d64 -Xms256m -Xmx2048m -Xss256m -XX:+UseParallelGC -XX:MaxHeapSize=2048m -XX:MaxMetaspaceSize=1024m -XX:MaxHeapFreeRatio=75 -XX:+HeapDumpOnOutOfMemoryError"