Google Cloud Spring Boot InvocationTargetException

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【中文标题】Google Cloud Spring Boot InvocationTargetException【英文标题】: 【发布时间】:2021-10-21 18:22:55 【问题描述】:

我尝试将 spring-boot 应用程序部署到谷歌云。它在本地运行良好,但是在将其部署到 App Engine 并尝试点击登录页面时,我收到 404 错误和大量 InvocationTargetExceptions:

java.io.IOException: java.lang.reflect.InvocationTargetException
    at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:209) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.tomcat.util.scan.JarFileUrlJar.<init>(JarFileUrlJar.java:65) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.tomcat.util.scan.JarFactory.newInstance(JarFactory.java:49) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:383) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.tomcat.util.scan.StandardJarScanner.processURLs(StandardJarScanner.java:318) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.tomcat.util.scan.StandardJarScanner.doScanClassPath(StandardJarScanner.java:282) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:233) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.jasper.servlet.TldScanner.scanJars(TldScanner.java:262) ~[tomcat-embed-jasper-9.0.46.jar!/:na]
    at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:104) ~[tomcat-embed-jasper-9.0.46.jar!/:na]
    at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:83) ~[tomcat-embed-jasper-9.0.46.jar!/:na]
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5161) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na]
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:829) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na]
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:433) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[tomcat-embed-core-9.0.46.jar!/:na]
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:450) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:199) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:182) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:160) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:577) ~[spring-context-5.3.7.jar!/:5.3.7]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:438) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:337) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1336) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1325) ~[spring-boot-2.5.0.jar!/:2.5.0]
    at samuelb.capripol.CapripolApplication.main(CapripolApplication.java:17) ~[classes!/:0.0.1-SNAPSHOT]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
    at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) ~[capripol-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) ~[capripol-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) ~[capripol-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
    at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88) ~[capripol-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
Caused by: java.lang.reflect.InvocationTargetException: null
    at java.base/jdk.internal.reflect.GeneratedConstructorAccessor33.newInstance(Unknown Source) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na]
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) ~[na:na]
    at org.apache.tomcat.util.compat.Jre9Compat.jarFileNewInstance(Jre9Compat.java:206) ~[tomcat-embed-core-9.0.46.jar!/:na]
    ... 54 common frames omitted
Caused by: java.nio.file.NoSuchFileException: /workspace/lib/modelmapper-2.3.5.jar
    at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92) ~[na:na]
    at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111) ~[na:na]
    at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116) ~[na:na]
    at java.base/sun.nio.fs.UnixFileAttributeViews$Basic.readAttributes(UnixFileAttributeViews.java:55) ~[na:na]
    at java.base/sun.nio.fs.UnixFileSystemProvider.readAttributes(UnixFileSystemProvider.java:149) ~[na:na]
    at java.base/sun.nio.fs.LinuxFileSystemProvider.readAttributes(LinuxFileSystemProvider.java:99) ~[na:na]
    at java.base/java.nio.file.Files.readAttributes(Files.java:1764) ~[na:na]
    at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1239) ~[na:na]
    at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:732) ~[na:na]
    at java.base/java.util.zip.ZipFile$CleanableResource.get(ZipFile.java:849) ~[na:na]
    at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:247) ~[na:na]
    at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:177) ~[na:na]
    at java.base/java.util.jar.JarFile.<init>(JarFile.java:348) ~[na:na]
    ... 58 common frames omitted

还可能值得一提的是,使用 gcloud app deploy 进行部署时会出现错误,即我已超过 10000 个文件限制,这是不正确的,应用程序甚至没有 500 个。

app.yaml:

runtime: java11
# this makes no difference
# entrypoint: java -Xmx64m -jar capripol-0.0.1-SNAPSHOT.jar
instance_class: F2

handlers:
- url: /.*
  secure: always
  redirect_http_response_code: 301
  script: auto
- url: /login
  secure: always
  redirect_http_response_code: 301
  script: auto

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 https://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>2.5.0</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <groupId>samuelB</groupId>
    <artifactId>capripol</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>Capripol</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>11</java.version>
    </properties>

    <!-- <properties>
    

    
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

      
        <webjars-bootstrap.version>3.3.6</webjars-bootstrap.version>
        <webjars-jquery-ui.version>1.11.4</webjars-jquery-ui.version>
        <webjars-jquery.version>2.2.4</webjars-jquery.version>
        <wro4j.version>1.8.0</wro4j.version>

        <jacoco.version>0.8.5</jacoco.version>
        <nohttp-checkstyle.version>0.0.4.RELEASE</nohttp-checkstyle.version>
        <spring-format.version>0.0.25</spring-format.version> -->
    <!-- </properties> -->

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-gcp-dependencies</artifactId>
                <version>1.0.0.RC1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-gcp-starter-sql-mysql</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-gcp-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-taglibs</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.11.2</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.11.2</version>
        </dependency>
        <dependency>
            <groupId>org.modelmapper</groupId>
            <artifactId>modelmapper</artifactId>
            <version>2.3.5</version>
        </dependency>
    </dependencies>

    <repositories>
      <!-- Use Spring Milestone Repository -->
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

    <build>
        <plugins>
            <plugin>
        <!-- Build an executable JAR -->
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.1.0</version>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                            <mainClass>samuelb.capripol.CapripolApplication</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>com.google.cloud.tools</groupId>
                <artifactId>appengine-maven-plugin</artifactId>
                <version>2.1.0</version>
                <configuration>
                    <version>1</version>
                    <projectId>GCLOUD_CONFIG</projectId>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

目录结构:

任何帮助将不胜感激。

编辑:

这是来自 gcloud app deploy --verbosity=debug 的调试日志

DEBUG: (gcloud.app.deploy) INVALID_ARGUMENT: This deployment has too many files. New versions are limited to 10000 files for this app.
- '@type': type.googleapis.com/google.rpc.BadRequest
  fieldViolations:
  - description: This deployment has too many files. New versions are limited to 10000
      files for this app.
    field: version.deployment.files[...]
Traceback (most recent call last):
  File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/calliope/cli.py", line 984, in Execute
    resources = calliope_command.Run(cli=self, args=args)
  File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/calliope/backend.py", line 809, in Run
    resources = command_instance.Run(args)
  File "/usr/lib/google-cloud-sdk/lib/surface/app/deploy.py", line 130, in Run
    use_legacy_apis=args.use_legacy_apis)
  File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/command_lib/app/deploy_util.py", line 691, in RunDeploy
    service_account=service_account)
  File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/command_lib/app/deploy_util.py", line 463, in Deploy
    extra_config_settings, service_account)
  File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/api_lib/app/appengine_api_client.py", line 177, in DeployService
    service_account_email)
  File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/api_lib/app/appengine_api_client.py", line 260, in _CreateVersion
    return self.client.apps_services_versions.Create(create_request)
  File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/third_party/apis/appengine/v1/appengine_v1_client.py", line 830, in Create
    config, request, global_params=global_params)
  File "/usr/bin/../lib/google-cloud-sdk/lib/third_party/apitools/base/py/base_api.py", line 737, in _RunMethod
    return self.ProcessHttpResponse(method_config, http_response, request)
  File "/usr/bin/../lib/google-cloud-sdk/lib/third_party/apitools/base/py/base_api.py", line 743, in ProcessHttpResponse
    self.__ProcessHttpResponse(method_config, http_response, request))
  File "/usr/bin/../lib/google-cloud-sdk/lib/third_party/apitools/base/py/base_api.py", line 610, in __ProcessHttpResponse
    http_response, method_config=method_config, request=request)
apitools.base.py.exceptions.HttpBadRequestError: HttpError accessing <https://appengine.googleapis.com/v1/apps/pollog/services/default/versions?alt=json>: response: <'vary': 'Origin, X-Origin, Referer', 'content-type': 'application/json; charset=UTF-8', 'date': 'Sun, 22 Aug 2021 01:18:11 GMT', 'server': 'ESF', 'cache-control': 'private', 'x-xss-protection': '0', 'x-frame-options': 'SAMEORIGIN', 'x-content-type-options': 'nosniff', 'transfer-encoding': 'chunked', 'status': '400', 'content-length': '517', '-content-encoding': 'gzip'>, content <
  "error": 
    "code": 400,
    "message": "This deployment has too many files. New versions are limited to 10000 files for this app.",
    "status": "INVALID_ARGUMENT",
    "details": [
      
        "@type": "type.googleapis.com/google.rpc.BadRequest",
        "fieldViolations": [
          
            "field": "version.deployment.files[...]",
            "description": "This deployment has too many files. New versions are limited to 10000 files for this app."
          
        ]
      
    ]
  

【问题讨论】:

您能否分享将您的应用部署到带有--verbosity=debug 标志的App Engine 时收到的详细日志?如果从框架部署,则可以达到 10,000 个文件的限制。 @FaridShumbar 日志已添加 请看一下这个thread。如果它回答了您的问题,请告诉我。 我没有其他 10000 个文件,所以我不需要增加上限。我真的不确定为什么它说我有超过 10000 个。它可能包括我的项目引用的库和东西吗?如果是这样,我不确定哪些文件可以或应该被忽略 这实际上是一个相当常见的错误。 Websphere 也有类似的问题。 【参考方案1】:

出现超过 10,000 个文件限制的错误,因为库文件也被计算在内。

这看起来可以由 Google 改进,因此您可以创建一个关于此设计的Public issue tracker,并请求一个允许不计算库文件或例如增加此限制的解决方案。

【讨论】:

你好@Rigg97。这是answer your question吗? @WytrzymałyWiktor 它解释了为什么我无法部署,但我的问题在于 NoSuchFileException 的根源【参考方案2】:

您的问题可能与您正在配置 maven-jar-plugin 以在 MANIFEST 类路径中包含对您的应用程序依赖项的引用有关。

当您的应用程序使用spring-boot-maven-plugin 重新打包时,它将生成一个file,其中您对指定库的引用不再有效。

因此,当 App Engine 尝试启动您的应用时,会加载您的 jar,并在尝试查找不同的类路径依赖项时引发 NoSuchFileException 错误。

为避免此问题,请尝试从您的maven-jar-plugin 中删除以下配置:

<configuration>
  <archive>
    <manifest>
       <addClasspath>true</addClasspath>
       <classpathPrefix>lib/</classpathPrefix>
       <mainClass>samuelb.capripol.CapripolApplication</mainClass>
    </manifest>
  </archive>
</configuration>

Spring 将负责提供正确的依赖项和主类。

关于10,000 file limit 问题,请检查您的存档内容,看看您是否可以优化它以仅使用实际需要的元素。

由于您可能正在使用 App Engine Flexible 环境,请尝试在您配置的 VM 实例中执行 ssh 并查看发生了什么:

gcloud app instances ssh --service=s1 --version=v1 i1 --container=gaeapp

请参阅relevant documentation。这个SO question 可以帮上大忙。

【讨论】:

修复了 FileNotFoundException,谢谢!但是,我仍然遇到 404 错误。值得一提的是,我在开发人员工具中遇到错误:混合内容:“pollog.ts.r.appspot.com/login”处的页面是通过 HTTPS 加载的,但请求了一个不安全的网站图标“pollog.ts.r.appspot.com/login”。此请求已被阻止;内容必须通过 HTTPS 提供。 嗨@Rigg97。我很高兴听到 NoSuchFileException 错误已通过建议的更改得到解决。我不认为 chrome 报告的 favicon 错误是 404 问题的根源。请确保您的网站图标存在,并查看其 link href 并提供正确的值。关于404问题,请查看您的GAE日志,只需找到您的服务并在工具下导航到log explorer,或使用gcloudgcloud app logs tail;试试看是怎么回事,应该会的 给你一些关于问题的指导。请问,你可以试试吗? 我收到的唯一日志如下:2021-09-03 08:03:47 default[1] "GET /login HTTP/1.1" 404 2021-09-03 08:03:47 default[1] "GET /favicon.ico HTTP/1.1" 302 似乎没有任何问题,但可能应用程序的根目录已配置为 GAE 提供的域 'polllog. ts.r.appspot.com'。或者我在之前的评论中提到的错误可能是阻止了对应用程序的任何请求? @Rigg97 它看起来像一个单独的问题。请在 Stack 上创建一个新线程。还请考虑接受 jccampanero 的回答,因为它解决了最初的问题。谢谢

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