小编Ale*_*her的帖子

我知道当一个Lambda函数失败时(例如当有一个超时)时,它会再次尝试再运行该函数3次.有什么方法可以避免这种行为吗？我一直在阅读文档,但没有找到任何关于这个.

谢谢!

我正在尝试使用Docker 的图像elk-docker(https://elk-docker.readthedocs.io/),使用Docker Compose..yml文件是这样的:

elk:
image: sebp/elk
ports:
  - "5601:5601"
  - "9200:9200"
  - "5044:5044"

当我运行命令:sudo docker-compose up时,控制台显示:

* Starting Elasticsearch Server
sysctl: setting key "vm.max_map_count": Read-only file system
...fail!
waiting for Elasticsearch to be up (1/30)
waiting for Elasticsearch to be up (2/30)
waiting for Elasticsearch to be up (3/30)
waiting for Elasticsearch to be up (4/30)
waiting for Elasticsearch to be up (5/30)
waiting for Elasticsearch to be up (6/30)
waiting for Elasticsearch to be up …

我正在学习Flyway迁移工具,我没有明确校验和的概念.有人可以解释一下是什么吗？它是如何计算的,或者如何改变？

我理解修复命令重新计算校验和,我不明白它是如何不同的.

谢谢!

我有一个从 ActivatedRoute 的 params 属性获取值的组件。

组件看起来像：

......
  constructor(public userRegistration: UserRegistrationService, public userLogin: UserLoginService,
              public router: Router, public route: ActivatedRoute) {
  }

  ngOnInit() {
    this.verificationCode = new FormControl('', [Validators.required]);
    this.confirmationCodeForm = new FormGroup({verificationCode: this.verificationCode});

    //****************************** 
    this.sub = this.route.params.subscribe(params => {
      this.email = params['userId'];
    });
   //******************************
    this.errorMessage = null;
  }
 ......

该测试提供了一个 ActivatedRoute 作为模拟该类的“useValue”。测试看起来像：

describe('ConfirmRegistrationComponent', () => {
  let component: ConfirmRegistrationComponent;
  let fixture: ComponentFixture<ConfirmRegistrationComponent>;
  let userRegistrationService: UserRegistrationService;
  let userLoginService: UserLoginService;
  let router: Router;

  beforeEach(async(() => {
    TestBed.configureTestingModule({
      imports: [ReactiveFormsModule, FormsModule, RouterTestingModule, HttpClientModule], …

我在尝试运行测试时遇到以下错误:

org.springframework.web.util.NestedServletException:请求处理失败; 嵌套异常是java.lang.IllegalStateException:Validator [userCreateFormValidator bean]的目标无效:com.ar.empresa.forms.UserCreateForm@15c3585

引起:java.lang.IllegalStateException:验证器[userCreateFormValidator bean]的目标无效:com.ar.empresa.forms.UserCreateForm@15c3585 org.springframework.valid.VeridFatate.alsert位于sun.reflect.NativeMethodAccessorImpl的sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)的com.ar.empresa.controllers.UserController.initBinder(UserController.java:36)中的.validation.DataBinder.addValidators(DataBinder.java:578) .invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:498)

代码是:

控制器:

@Controller
public class UserController {
private UserService userService;
private UserCreateFormValidator userCreateFormValidator;

@Autowired
public UserController(UserService userService, UserCreateFormValidator userCreateFormValidator) {
    this.userService = userService;
    this.userCreateFormValidator = userCreateFormValidator;
}

@InitBinder("form")
public void initBinder(WebDataBinder binder) {
    binder.addValidators(userCreateFormValidator);
}

@PreAuthorize("hasAuthority('ADMIN')")
@RequestMapping(value = "/user/create", method = RequestMethod.GET)
public ModelAndView getUserCreatePage() {
    return new ModelAndView("user_create", "form", new UserCreateForm());
}

@PreAuthorize("hasAuthority('ADMIN')")
@RequestMapping(value = "/user/create", method = RequestMethod.POST)
public String handleUserCreateForm(@Valid @ModelAttribute("form") UserCreateForm form, BindingResult bindingResult) …

我正在使用 Cucumber 编写验收测试，并且我想使用 H2 数据库进行测试。

application-test.properties 如下所示：

server.port:8090

spring.jpa.database=H2
spring.database.driverClassName=org.h2.Driver
spring.datasource.url:jdbc:h2:mem:database_user;DB_CLOSE_ON_EXIT=FALSE
flyway.locations=classpath:resources/db/migration
flyway.enabled=true

spring.datasource.username:SA
spring.datasource.password:

spring.h2.console.enabled=true
spring.jpa.show-sql=true

security.basic.enabled:false
spring.application.name=userService

在目录 resources/db/migration 中，我有一个包含以下脚本的 sql 文件：

create table user_image(
 id int unsigned not null AUTO_INCREMENT,
 url varchar(1000) not null,
 s3_key varchar(200) not null,
 PRIMARY KEY (id)
);


create table user (
    id int unsigned not null AUTO_INCREMENT,
    email varchar(50) not null,
    password varchar(100) not null,
    first_name varchar(50) not null,
    last_name varchar(50) not null,
    description varchar(50),
    phone_number varchar(50),
    user_image_id int unsigned,
    need_refresh_pass boolean …

我正在尝试将 Json 文件从 Swagger 导入到 insomnia。为此，我使用 NPM 中的这个项目（我不熟悉 NPM）：

https://www.npmjs.com/package/insomnia-importers

我安装了 npm v6.5.0 和 Node v11.9.0。

我运行了这个命令：`insomnia-import /path/to/swagger-export.json

失眠-export.json：

 (node:38053) UnhandledPromiseRejectionWarning: TypeError: Cannot
 convert undefined or null to object
     at Function.keys (<anonymous>)
     at object (/Users/user/.nvm/versions/node/v11.9.0/lib/node_modules/insomnia-importers/src/importers/swagger2.js:300:14)
     at generateParameterExample (/Users/user/.nvm/versions/node/v11.9.0/lib/node_modules/insomnia-importers/src/importers/swagger2.js:332:12)
     at Object.keys.forEach.propertyName (/Users/user/.nvm/versions/node/v11.9.0/lib/node_modules/insomnia-importers/src/importers/swagger2.js:301:33)
     at Array.forEach (<anonymous>)
     at object (/Users/user/.nvm/versions/node/v11.9.0/lib/node_modules/insomnia-importers/src/importers/swagger2.js:300:31)
     at generateParameterExample (/Users/user/.nvm/versions/node/v11.9.0/lib/node_modules/insomnia-importers/src/importers/swagger2.js:332:12)
     at prepareBody (/Users/user/.nvm/versions/node/v11.9.0/lib/node_modules/insomnia-importers/src/importers/swagger2.js:242:37)
     at importRequest (/Users/user/.nvm/versions/node/v11.9.0/lib/node_modules/insomnia-importers/src/importers/swagger2.js:173:11)
     at tags.forEach (/Users/user/.nvm/versions/node/v11.9.0/lib/node_modules/insomnia-importers/src/importers/swagger2.js:129:21)
 (node:38053) UnhandledPromiseRejectionWarning: Unhandled promise
 rejection. This error originated either by throwing inside of an async
 function without a catch block, or …

我有一个带有 SpringBoot2 和 Junit5 的应用程序，现在我正在尝试进行测试。我有一个名为 OrderService 的类，如下所示：

@Component
public class OrderService {
@Value("#{'${food.requires.box}'.split(',')}")
private List<String> foodRequiresBox;

@Value("#{'${properties.prioritization}'.split(',')}")
private List<String> prioritizationProperties;

@Value("${further.distance}")
private Integer slotMeterRange;

@Value("${slot.meters.long}")
private Double slotMetersLong;

正如您所看到的，该类有许多 @Value 注释，用于从 application.properties 文件中提取值。

在 POM 文件中，我有以下依赖项：

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.1.RELEASE</version>
</parent>
<dependencies>
<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter-engine</artifactId>
    <version>5.1.0</version>
</dependency>
<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter-api</artifactId>
    <version>RELEASE</version>
</dependency>
<dependency>
    <groupId>org.junit.platform</groupId>
    <artifactId>junit-platform-launcher</artifactId>
    <version>1.1.0</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
    <version>2.0.5.RELEASE</version>
</dependency>

在test/resources文件夹中，我有包含以下信息的 application.properties 文件：

properties.prioritization:vip,food
food.requires.box:pizza,cake,flamingo
further.distance:2
slot.meters.long:0.5

测试文件如下所示：

properties.prioritization:vip,food
food.requires.box:pizza,cake,flamingo
further.distance:2
slot.meters.long:0.5

但测试在尝试使用foodRequiresBox时会抛出 …

我在微服务之间使用 Kafka 进行异步调用，我正在使用 Spring Sleuth 进行日志记录。日志没问题，但是当有消息从微服务1到微服务2时，日志的消息有不同的Trace-ID。他们不是必须具有相同的 trace-Id 但具有不同的 SpanId 吗？有什么特别的配置吗？

我有一个Spring Boot Rest API,我一直在工作,上周我添加了Swagger和Swagger-UI.之后,存储库的测试(仅与存储库相关的测试)开始不起作用,当我运行它时,我收到此错误:

java.lang.IllegalStateException: Failed to load ApplicationContext

    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
    at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
    at org.springframework.boot.test.autoconfigure.SpringBootDependencyInjectionTestExecutionListener.prepareTestInstance(SpringBootDependencyInjectionTestExecutionListener.java:44)
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:228)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:247)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
    at org.junit.runners.Suite.runChild(Suite.java:128)
    at org.junit.runners.Suite.runChild(Suite.java:27)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: …

我在SpringBoot应用程序中使用Logback和Logstash。

在logback.xml中，我有一个带有服务名称的属性，如下所示：

<configuration>

<include resource="org/springframework/boot/logging/logback/defaults.xml" />

<include resource="org/springframework/boot/logging/logback/console-appender.xml" />

<property name="spring.application.name" calue="service"/>

<appender name="stash" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
    <destination>localhost:9600</destination>
    <encoder class="net.logstash.logback.encoder.LogstashEncoder"/>
</appender>

<root level="INFO">
    <appender-ref ref="CONSOLE" />
    <appender-ref ref="stash" />
</root>

</configuration>

Logstash conf文件类似于：

input{ tcp{
        port=> 9600
        host=>logstash
    }
}

filter {
grok {
match => {
  "message" =>
  "^%{TIMESTAMP_ISO8601:timestamp}\s+%{LOGLEVEL:level}\s+%{NUMBER:pid}\s+---\s+\[\s*%{USERNAME:thread}\s*\]\s+%{JAVAFILE:class}\s*:\s*%{DATA:themessage}(?:\n+(?<stacktrace>(?:.|\r|\n)+))?$"
}
}
date {
match => [ "timestamp" , "yyyy-MM-dd HH:mm:ss.SSS" ]
}
 mutate {
remove_field => ["@version"]
add_field => {
  "appid" => "%{[path]}"
}
add_field => {
  "levell" => "level"
} …

我正在使用功能控制器将 Swagger 添加到我的 Spring Webflux 服务中。首先我收到这个错误：

描述：无法注册在类路径资源 [org/springdoc/webflux/ui/SwaggerConfig.class] 中定义的 bean“swaggerWelcome”。具有该名称的 bean 已在类路径资源 [org/springdoc/webmvc/ui/SwaggerConfig.class] 中定义，并且覆盖被禁用。

行动：

考虑重命名其中一个 bean 或通过设置 spring.main.allow-bean-definition-overriding=true 来启用覆盖

所以我将 spring.main.allow-bean-definition-overriding=true 添加到我的 application.properties 文件中。

现在我收到这个错误：

描述：

org.springdoc.webmvc.ui.SwaggerConfig 中方法 swaggerWebMvcConfigurer 的参数 1 需要一个类型为“org.springdoc.webmvc.ui.SwaggerIndexTransformer”的 bean，但无法找到。

行动：

考虑在配置中定义“org.springdoc.webmvc.ui.SwaggerIndexTransformer”类型的 bean。

Pom 文件：

<?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>

    <groupId>com.company/groupId>
    <artifactId>service</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.0</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>

        <!-- For all mvc and web functions -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency> …