如何在@SpringBootTest 启动期间防止记录噪音？

Question

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
                    properties = "logging.level.root=OFF")
public class MyTest {
         @Test
         public void test() {}
}

作为上述简单测试的结果，我记录了很多启动噪音。在升级到 spring-boot-2.x 之前情况并非如此。我怎样才能防止这种噪音？

特别是，我的 Intellij IDE 将这些语句记录在 red 中，随着测试本身的通过，这更加令人困惑...

Jul 31, 2018 1:55:57 PM org.springframework.boot.test.context.SpringBootTestContextBootstrapper buildDefaultMergedContextConfiguration
INFO: Neither @ContextConfiguration nor @ContextHierarchy found for test class [MyTest], using SpringBootContextLoader
Jul 31, 2018 1:55:57 PM org.springframework.test.context.support.AbstractContextLoader generateDefaultLocations
INFO: Could not detect default resource locations for test class [MyTest]: no resource found for suffixes {-context.xml, Context.groovy}.
Jul 31, 2018 1:55:57 PM org.springframework.test.context.support.AnnotationConfigContextLoaderUtils detectDefaultConfigurationClasses
INFO: Could not detect default configuration classes for test class [MyTest]: MyTest does not declare any static, non-private, non-final, nested classes annotated with @Configuration.
Jul 31, 2018 1:55:57 PM org.springframework.boot.test.context.SpringBootTestContextBootstrapper getOrFindConfigurationClasses
INFO: Found @SpringBootConfiguration MyApp for test class MyTest
Jul 31, 2018 1:55:58 PM org.springframework.boot.test.context.SpringBootTestContextBootstrapper getDefaultTestExecutionListenerClassNames
INFO: Loaded default TestExecutionListener class names from location [META-INF/spring.factories]: [org.springframework.boot.test.mock.mockito.MockitoTestExecutionListener, org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListener, org.springframework.boot.test.autoconfigure.restdocs.RestDocsTestExecutionListener, org.springframework.boot.test.autoconfigure.web.client.MockRestServiceServerResetTestExecutionListener, org.springframework.boot.test.autoconfigure.web.servlet.MockMvcPrintOnlyOnFailureTestExecutionListener, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverTestExecutionListener, org.springframework.test.context.web.ServletTestExecutionListener, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener, org.springframework.test.context.support.DependencyInjectionTestExecutionListener, org.springframework.test.context.support.DirtiesContextTestExecutionListener, org.springframework.test.context.transaction.TransactionalTestExecutionListener, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener, org.springframework.security.test.context.support.WithSecurityContextTestExecutionListener, org.springframework.security.test.context.support.ReactorContextTestExecutionListener]
Jul 31, 2018 1:55:58 PM org.springframework.boot.test.context.SpringBootTestContextBootstrapper getTestExecutionListeners
INFO: Using TestExecutionListeners: [org.springframework.test.context.web.ServletTestExecutionListener@1a4013, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener@1b6e1eff, org.springframework.boot.test.mock.mockito.MockitoTestExecutionListener@306f16f3, org.springframework.boot.test.autoconfigure.SpringBootDependencyInjectionTestExecutionListener@702b8b12, org.springframework.test.context.support.DirtiesContextTestExecutionListener@22e357dc, org.springframework.test.context.transaction.TransactionalTestExecutionListener@49912c99, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener@10163d6, org.springframework.security.test.context.support.WithSecurityContextTestExecutionListener@2dde1bff, org.springframework.security.test.context.support.ReactorContextTestExecutionListener@15bbf42f, org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListener@550ee7e5, org.springframework.boot.test.autoconfigure.restdocs.RestDocsTestExecutionListener@5f9b2141, org.springframework.boot.test.autoconfigure.web.client.MockRestServiceServerResetTestExecutionListener@247d8ae, org.springframework.boot.test.autoconfigure.web.servlet.MockMvcPrintOnlyOnFailureTestExecutionListener@48974e45, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverTestExecutionListener@6a84a97d]

也许与使用 log4j2 有关？

 <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-log4j2</artifactId>
    </dependency>

Answer 1

首先：我知道，这不是一个真正的答案，但评论太长了。

使用 log4j 依赖项在我的输出中没有太大变化。

我的 POM

<?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.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.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-web</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</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-log4j2</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

我的 application.properties 是空的，所以那里没有日志配置。

我的测试

package com.example.demo;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT, properties = "logging.level.root=")
public class DemoApplicationTests
{

    @Test
    public void test()
    {
        System.out.println("Katzenbilder sind doof");
    }

}

运行来自 IntelliJ 的 logging.level.root=OFF 测试导致此输出

  .   ____          _            __ _ _
 /\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.4.RELEASE)

##### Optional[Hallo Welt]
##### Hallo Welt
Katzenbilder sind doof

Process finished with exit code 0

带有 ##### 的两行来自测试 bean System.out.println()。

运行使用 logging.level.root=INFO 的测试我得到了 Spring 日志消息的预期混乱。

我也只是为了验证，将 logging.level.root=INFO 放入我的 application.properties 并在测试中将其设为 OFF。没有混乱，只有 System.out.println() 消息。

Answer 2

你需要在你的\test\resources目录下创建一个logback-test.xml，内容如下文件可以跟随

<?xml version="1.0" encoding="UTF-8"?>
<configuration />

为什么是空的？

因为此时您不希望记录任何内容，因此 - 空配置。

如果您想了解更具体的信息，可以查看一些 examples here

Answer 3

已编辑

在你的测试资源中创建logback-test.xml (\test\resources), 然后将波纹管片段放入其中

<configuration>
    <include resource="org/springframework/boot/logging/logback/base.xml" />
    <logger name="org.springframework" level="OFF"/>
</configuration>

It prints default system INFOs, not startup noise logs. (As you wanted)

而测试的依赖可以如下

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>

Answer 4

这似乎是 log4j2 的配置问题。请参考 log4j2 配置的层次结构 here。

在您的情况下，log4j2 最初是使用 src/main/resources 下可用的 log4j2.properties 或 log4j2.xml 配置的，因此 INFO 日志打印在控制台上。仅当加载测试 class 时，日志记录级别才会更改为 OFF，这仅在启动日志记录噪音已经打印后才会完成。

为避免任何启动日志噪音，请在 src/test/resources 下添加 log4j2.properties 或 log4j2.xml，root 日志级别为 ERROR （我不希望将其设置为 OFF，因为这也会抑制任何错误）。

我无法重现启动日志写入 stderr 的错误。请检查您是否在 log4j2 配置中将 dest 属性设置为 err。这可以强制将启动日志写入 stderr.

EDIT #1

Sharing my log4j2.xml configuration placed under src/main/resources for your reference.

Under src/test/resources, <Root level="info"> is changed to <Root level="error">.

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN" monitorInterval="0">

  <Properties>
    <Property name="LOG_PATTERN">
      %d | %5p | [%t] | %c:%M(%L) | %m %n
    </Property>
  </Properties>

  <Appenders>
    <Console name="ConsoleAppender">
      <PatternLayout pattern="${LOG_PATTERN}" />
    </Console>
  </Appenders>

  <Loggers>
    <Root level="info">
      <AppenderRef ref="ConsoleAppender" />
    </Root>
  </Loggers>

</Configuration>

Answer 5

晚安，这里有很多答案。关于日志级别配置 - 似乎都有效。但是你的问题可能更多的是 Maven 构建是嘈杂的 - 你为什么不尝试将 surefire 的测试输出重定向到单独的文件中，每个测试一个？

https://maven.apache.org/surefire/maven-surefire-plugin/test-mojo.html#redirectTestOutputToFile

https://maven.apache.org/surefire/maven-failsafe-plugin/integration-test-mojo.html#redirectTestOutputToFile

这可以在全球范围内很好地完成：

<pluginManagement>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-surefire-plugin</artifactId>
      <configuration>
        <redirectTestOutputToFile>true</redirectTestOutputToFile>
      </configuration>
  </plugin>
</pluginManagement>

如何在@SpringBootTest 启动期间防止记录噪音？

How to prevent logging noise during startup in @SpringBootTest?

java

spring

spring-boot

spring-boot-test