java - 无法将应用程序日志保存到文件

Question

我正在创建一个简单的 Spring Boot 应用程序，它会在 API 调用时生成结果。该应用程序按预期工作，但我无法将日志打印到文件。日志仅显示在控制台中。这是我的 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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.project.simple</groupId>
    <artifactId>SampleApplication</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>SampleApplication</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <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-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>runtime</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-jpa -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
            <version>2.1.1.RELEASE</version>
        </dependency>

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

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

</project>

这是我的应用程序属性:

# H2
spring.h2.console.enabled=true
spring.h2.console.path=/h2
# Datasource
spring.datasource.url=jdbc:h2:file:~/test
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.driver-class-name=org.h2.Driver
#Logging
logging.level.org.springframework.web=ERROR
logging.level.com.project.simple.SampleApplication=INFO

# Logging pattern for the console
logging.pattern.console= %d{yyyy-MM-dd HH:mm:ss} - %msg%n

# Logging pattern for file
logging.pattern.file= %d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%

#output to a file
logging.file=/Users/application.log

如果我遗漏了什么，有人可以告诉我吗？

Answer 1

尝试将以下依赖项添加到您的 pom:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-logging</artifactId>
    <version>2.1.4.RELEASE</version>
</dependency>

When using spring-boot starters, Logback is used for logging by default. The default logging level of the Logger is preset to INFO, meaning that TRACE and DEBUG messages are not visible.

Spring Boot has no mandatory logging dependency, except for the Commons Logging API, which is typically provided by Spring Framework’s spring-jcl module. To use Logback, you need to include it and spring-jcl on the classpath. The simplest way to do that is through the starters, which all depend on spring-boot-starter-logging.

spring-boot中的自定义日志配置 :Spring自动识别并获取以下文件进行配置: - logback-spring.xml - logback.xml - logback-spring.groovy - logback.groovy

或者，如果这不起作用，请尝试配置 spring-boot 以仅使用以下配置将日志写入文件:logback-spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <include resource="org/springframework/boot/logging/logback/defaults.xml" />
    <property name="LOG_FILE" value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}spring.log}"/>
    <include resource="org/springframework/boot/logging/logback/file-appender.xml" />
    <root level="INFO">
        <appender-ref ref="FILE" />
    </root>
</configuration>

供引用阅读here