Question

我正在尝试在GCP上部署GAE SpringBoot应用程序，但没有运气。

获得以下错误：

来自servlet的未捕获异常
java.lang.RuntimeException：javax.servlet.ServletException：未在Jetty上运行，JSR-356支持在org.eclipse.jetty.util的org.eclipse.jetty.annotations.ServletContainerInitializersStarter.doStart（ServletContainerInitializersStarter.java:68）处不可用。 component.AbstractLifeCycle.start（AbstractLifeCycle.java:68）在 org.eclipse.jetty.servlet.ServletContextHandler.startContext（ServletContextHandler.java:330）

POM

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://maven.apache.org/POM/4.0.0"
    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>com.gcptest</groupId>
    <artifactId>gcptest-service</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.10.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <!-- Excluded for GCP Conflict, as gcp runs on jetty -->
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.zaxxer</groupId>
            <artifactId>HikariCP</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jetty</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.apache.tomcat</groupId>
                    <artifactId>tomcat-jdbc</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.8.0</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.8.0</version>
        </dependency>
        <dependency>
            <groupId>io.swagger</groupId>
            <artifactId>swagger-annotations</artifactId>
            <version>1.5.13</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.8.0</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.7.0</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.7.0</version>
        </dependency>

        <!-- Dependency for GCP -->
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-api-1.0-sdk</artifactId>
            <version>1.9.48</version>
        </dependency>
        <dependency>
            <groupId>com.google.cloud.sql</groupId>
            <artifactId>mysql-socket-factory-connector-j-6</artifactId>
            <version>1.0.5</version>
        </dependency>
        <dependency>
            <groupId>com.google.cloud</groupId>
            <artifactId>google-cloud-storage</artifactId>
            <version>1.22.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.appengine.tools</groupId>
            <artifactId>appengine-gcs-client</artifactId>
            <version>0.7</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>com.google.cloud.tools</groupId>
                <artifactId>appengine-maven-plugin</artifactId>
                <version>1.3.1</version>
            </plugingcptest
        </plugins>
        <resources>
            <resource>
                <filtering>true</filtering>
                <directory>src/main/resources</directory>
                <includes>
                    <include>*.properties</include>
                    <include>log4j2.json</include>
                </includes>
            </resource>
        </resources>
    </build>
</project>

Answer 1

您必须将应用转换为App Engine配置。如果您使用的是GOOGLE APP ENGINE标准，请按照these steps：

进行操作

使用WAR包装

您必须使用WAR包装部署到Google App Engine Standard。如果从start.spring.io生成Spring Boot项目，请确保切换到初始化程序站点的完整版本视图，然后选择WAR packaging。

如果您有一个现有的JAR打包项目，可以通过以下方式将其转换为WAR项目：

在pom.xml中，将<packaging>jar</packaging>更改为<packaging>war</packaging>

创建一个新的SpringBootServletInitializer实现：

public class ServletInitializer extends SpringBootServletInitializer {
  @Override
  protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
  return application.sources(YourApplication.class);
  }
}

删除Tomcat Starter

Google App Engine Standard将您的WAR部署到Jetty服务器中。 Spring Boot的启动器默认包含Tomcat。这将引入冲突。排除Tomcat依赖项：

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-web</artifactId>
  <exclusions>
    <exclusion>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-tomcat</artifactId>
    </exclusion>
  </exclusions>
</dependency>

不要包含Jetty依赖项。但是您必须包含Servlet API依赖：

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>

添加App Engine标准插件

在pom.xml中，添加App Engine标准插件：

<plugin>
  <groupId>com.google.cloud.tools</groupId>
  <artifactId>appengine-maven-plugin</artifactId>
  <version>1.3.1</version>
</plugin>

此插件用于运行本地开发服务器以及将应用程序部署到Google App Engine。

添加App Engine配置

添加src/main/webapp/WEB-INF/appengine-web.xml：

<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
  <version>1</version>
  <threadsafe>true</threadsafe>
  <runtime>java8</runtime>
</appengine-web-app>

此配置是在Google App Engine中运行的应用程序所必需的。

将JUL排除在SLF4J网桥

Spring Boot的默认日志记录桥与Jetty的日志系统冲突。为了能够捕获Spring Boot启动日志，您需要排除org.slf4j:jul-to-slf4j依赖项。最简单的方法是将依赖范围设置为提供，以便它不会包含在WAR文件中：

<dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>javax.servlet-api</artifactId>
  <version>3.1.0</version>
  <scope>provided</scope>
</dependency>

内存不足错误

使用Spring Boot >= 1.5.6，您可能会在启动时遇到内存不足错误。请按照这些说明解决此问题：

在src/main/resources内，添加logging.properties文件：

.level = INFO

在src/main/webapp/WEB-INF/appengine-web.xml内，添加一个指向新logging.properties文件的配置。

<system-properties>
  <property name="java.util.logging.config.file" value="WEB-INF/classes/logging.properties"/>
</system-properties>

SpringBoot应用程序GCP部署问题

1 个答案: