我正在使用 Flutter 开发 Windows 桌面应用程序,但不知道如何更改应用程序的名称和图标。
我正在使用 VSCode 开发 Flutter 应用程序,在将 XCode 升级到最新版本(14.3)后,我无法在模拟器(iOS 15、IPhone11)上运行我的 Flutter 应用程序。这是错误消息:
Error (Xcode): File not found: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/arc/libarclite_iphonesimulator.a
Error (Xcode): Linker command failed with exit code 1 (use -v to see invocation)
Could not build the application for the simulator.
Run Code Online (Sandbox Code Playgroud) 我正在尝试为我的 golang 项目在本地运行 CodeBuild。我已经拉取amazon/aws-codebuild-local:latest了 docker镜像并运行了 CodeBuild 脚本./codebuild_build.sh -i aws/codebuild/standard:2.0 -s "/project/src",什么也没发生。然后我捕获了脚本中生成的 docker 命令:docker run -it -v //var/run/docker.sock:/var/run/docker.sock -e "IMAGE_NAME=aws/codebuild/standard:2.0" -e "SOURCE=/project/src" -e "INITIATOR=me" amazon/aws-codebuild-local:latest.
当我运行 docker 命令时,出现以下错误:
Removing network agent-resources_default
Removing volume agent-resources_source_volume
Removing volume agent-resources_user_volume
Creating network "agent-resources_default" with the default driver
Creating volume "agent-resources_source_volume" with local driver
Creating volume "agent-resources_user_volume" with local driver
Pulling build (aws/codebuild/standard:2.0)...
ERROR: The image for the service you're trying to recreate has been removed. If you continue, …Run Code Online (Sandbox Code Playgroud) 我认为我在Redis中保存会话信息时遇到问题.我试图按照说明进行操作spring-session-data-redis,但是当我启动请求时,我在redis中找不到任何会话信息.以下是我的代码和配置.
application.properties文件:
spring.session.store-type=redis
spring.session.redis.flush-mode= on-save
spring.session.redis.namespace= spring:session
spring.redis.host= 10.10.10.10
spring.redis.port=10000
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pom.xml中:
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session-data-redis</artifactId>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
<type>jar</type>
</dependency>
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应用程序配置类:
@Configuration
@EnableRedisHttpSession
@PropertySource("application.properties")
public class AppConfig {
@Value("${spring.redis.host}")
private String redisHostName;
@Value("${spring.redis.port}")
private int redisPort;
@Bean
JedisConnectionFactory jedisConnectionFactory() {
RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration(
redisHostName, redisPort);
return new JedisConnectionFactory(redisStandaloneConfiguration);
}
}
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我的示例获取请求控制器:
// test only
@CrossOrigin
@GetMapping(value = "/test/test")
public String justTest(HttpServletRequest request) {
HttpSession session = request.getSession();
session.setAttribute("sessionId", "ssssss");
String value = (String) session.getAttribute("sessionId").toString();
return …Run Code Online (Sandbox Code Playgroud) 我正在尝试在 Tomcat Docker 容器中部署 war 文件,但总是获取404 Not Found页面。我按照Intellij Tutorial创建了 Spring Boot 项目,它在我本地的机器上运行良好。
这是我的 Dockerfile:
FROM tomcat:latest
ADD WebTutorial.war /usr/local/tomcat/webapps/ROOT.war
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我使用以下命令来构建映像并运行容器:
$ docker build -t sp-tomcat .
$ docker run -it -p 8080:8080 --name sp-tomcat sp-tomcat
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容器运行后,我登录到容器并看到 war 文件已部署(我想):

这是日志输出:
21-Dec-2021 07:41:35.819 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version name: Apache Tomcat/10.0.14
21-Dec-2021 07:41:35.821 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: Dec 2 2021 22:01:36 UTC
21-Dec-2021 07:41:35.821 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version number: 10.0.14.0
21-Dec-2021 07:41:35.821 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS …Run Code Online (Sandbox Code Playgroud) 我正在尝试使用$set函数修改存储在vuejs中的数据.但我得到了这个错误:TypeError: app.messageBox.$set is not a function.
这是关于我如何定义app和messageBox的代码:
app = new Vue({
el: '#app',
data: {
messageBox: [{
id: 1,
message: 'first'
}, {
id: 2,
message: 'second'
}]
}
});
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在另一个js文件中,我尝试修改messageBox中的数据:
function test() {
app.messageBox.$set(0, {message: 'aaa'});
}
Run Code Online (Sandbox Code Playgroud) 我正在尝试使用 Eclipse 编写 Spring boot 应用程序,但是遇到以下错误:
** WARNING ** : Your ApplicationContext is unlikely to start due to a @ComponentScan of the default package.
2018-03-15 12:16:19.833 WARN 30196 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class: URL [jar:file:/home/billcyz/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/2.0.0.RELEASE/spring-boot-autoconfigure-2.0.0.RELEASE.jar!/org/springframework/boot/autoconfigure/jdbc/DataSourceAutoConfiguration$EmbeddedDatabaseConfiguration.class]; nested exception is java.lang.IllegalStateException: Could not evaluate condition on org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration$EmbeddedDatabaseConfiguration due to org/springframework/dao/DataAccessException not found. Make sure your own configuration does not rely on that class. This can also …Run Code Online (Sandbox Code Playgroud) 我想知道在使用 ErLang 时如何将参数传递给 shell 脚本?我知道我可以os:cmd()用来执行 shell 脚本,但我发现我无法将参数传递给这个命令。
例如,我有一个参数L = 2,我希望我的 shell 脚本使用这个参数,所以 erlang 命令应该是os:cmd("bash echo.sh L"). 但是,输出是 L,但我想得到 2。谁能帮我?
如果一个服务器使用pid从一个进程接收多个请求!Msg,但每个请求的处理时间不同,那么如何保证发件人按顺序收到回复?