将控制台输出路由到 Springboot 中的日志文件

Question

我正在尝试将控制台日志记录路由到文件。虽然我能够生成日志文件，但它没有捕获从 logger.info 生成的输出。输出打印在控制台上，但没有反映在日志文件中。

application.properties：

logging.file.path= log
logging.pattern.file= [%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n

代码：

import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.*;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

import java.util.HashMap;
import java.util.Map;
@Service
public class GetImageFiles {

    @Value("${app.images.base.url}")
    String imagesBaseUrl;

    @Autowired
    DataAccessor dataAccessor;

    private static Logger logger =  LoggerFactory.getLogger(GetImageFiles.class);

    public void getImageDetails(String sessionID, String imageId, String articleId){

        HashMap<String, String> map = new HashMap<>();
        RestTemplate restTemplate = new RestTemplate();
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        headers.set("X-Chorus-Session",sessionID);


        HttpEntity<String> request = new HttpEntity<>(null, headers);

        String imageFilesUrl = imagesBaseUrl + "/" + imageId;

        ResponseEntity<String> responseEntity = restTemplate.exchange(imageFilesUrl, HttpMethod.GET, request, String.class);

        JSONObject jsonObject = new JSONObject(responseEntity.getBody());
        String imageName = jsonObject.get("filename").toString();

        JSONObject thumbnails = (JSONObject) jsonObject.get("thumbnails");
        JSONObject thumbnailsSize = (JSONObject) thumbnails.get("large");
        String imageUrl = thumbnailsSize.get("url").toString();

        map.put(imageName, imageUrl);

        for(Map.Entry<String, String > mapValue : map.entrySet()) {
            if (mapValue.getKey().lastIndexOf(".") > 0) {
                String imageMapKey = mapValue.getKey().substring(0, mapValue.getKey().lastIndexOf("."));
                if (imageMapKey.equals(articleId)) {
                    logger.info("Processing : The image name is : " + mapValue.getKey() + " and the imager URL is :" + mapValue.getValue() + "  for article Id is :" + articleId);
                    dataAccessor.updateImageDetails(mapValue.getKey(), mapValue.getValue(), articleId);
                }
            }
        }
    }

}

pom.xml：

<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.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.17.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.17.1</version>
        </dependency>

控制台输出..

2022-03-09 17:17:00.110  INFO 32900 --- [  restartedMain] o.s.b.w.e.t.TomcatWebServer              : Tomcat started on port(s): 8080 (http) with context path ''
2022-03-09 17:17:00.122  INFO 32900 --- [  restartedMain] c.a.t.ThirdlightApplication              : Started ThirdlightApplication in 11.293 seconds (JVM running for 12.775)
Total Article Ids to be processed :10
There is no image ids to be processed for article id :52KTM41
There is no image ids to be processed for article id :52LGY10
There is no image ids to be processed for article id :52NAZ41
There is no image ids to be processed for article id :52NBT60
There is no image ids to be processed for article id :52NEK40
There is no image ids to be processed for article id :52QAZ30
There is no image ids to be processed for article id :54LAQ01
There is no image ids to be processed for article id :54LAQ20
There is no image ids to be processed for article id :56NAK43
There is no image ids to be processed for article id :56NEU40
The process has been completed !

spring.log：

[INFO ] 2022-03-09 17:20:49.920 [restartedMain] ThirdlightApplication - Starting ThirdlightApplication using Java 11.0.7 on LHTU05CD9032TMM with PID 6456 (C:\Users\psingh69\Downloads\thirdlight\target\classes started by psingh69 in C:\Users\psingh69\Downloads\thirdlight)
[INFO ] 2022-03-09 17:20:49.933 [restartedMain] ThirdlightApplication - No active profile set, falling back to 1 default profile: "default"
[INFO ] 2022-03-09 17:20:50.000 [restartedMain] DevToolsPropertyDefaultsPostProcessor - Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
[INFO ] 2022-03-09 17:20:50.000 [restartedMain] DevToolsPropertyDefaultsPostProcessor - For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
[INFO ] 2022-03-09 17:20:59.846 [restartedMain] TomcatWebServer - Tomcat initialized with port(s): 8080 (http)
[INFO ] 2022-03-09 17:20:59.994 [restartedMain] ServletWebServerApplicationContext - Root WebApplicationContext: initialization completed in 9993 ms
[INFO ] 2022-03-09 17:21:00.670 [restartedMain] OptionalLiveReloadServer - LiveReload server is running on port 35729
[INFO ] 2022-03-09 17:21:00.723 [restartedMain] TomcatWebServer - Tomcat started on port(s): 8080 (http) with context path ''
[INFO ] 2022-03-09 17:21:00.742 [restartedMain] ThirdlightApplication - Started ThirdlightApplication in 11.588 seconds (JVM running for 13.107)

Answer 1

就我而言，我必须将配置文件“logback.xml”放在文件夹 src/main/resources 中...

它是高度可定制的，但您可以从这样的东西开始（STDOUT - 控制台 - 和文件同时写入）：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE logback>
<configuration>
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%date{yyyy-MM-dd HH:mm:ss} [%thread] %level %logger{0} - %msg \(%file:%line\)%n</pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>DEBUG</level>
        </filter>
    </appender>

    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>logs/yourappname.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>logs/yourappname.%d{yyyy-MM-dd}.log.tar.gz</fileNamePattern>
            <maxHistory>7</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd'T'HH:mm:ss'Z'} - %m%n</pattern>
        </encoder>
    </appender>

    <root level="INFO" additivity="false">
        <appender-ref ref="STDOUT" />
        <appender-ref ref="FILE" />
    </root>

</configuration>

上面的示例在“/logs”文件夹中写入“yourappname.log”文件（如果您使用的是 Windows 并且您的应用程序运行在驱动器 C: 上，则为 C:\logs\yourappname.log） /logs/yourappname.log（如果您使用的是 Linux 或 MacOS）。
此外，上述配置文件提供了一种基于时间的 LogRotation 机制（这意味着，按照固定的时间间隔（本例中为 7 天），日志文件会以 tar.gz 的方式进行压缩和归档，并重新启动一个新的日志文件。）

我不知道是否有机会将该配置字符串放入 application.properties 中，抱歉...

与您的略有不同，我的 pom.xml 引用了替代日志框架（ch.qos.logback），这里是：

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.36</version>
</dependency>
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>1.2.11</version>
</dependency>
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-core</artifactId>
    <version>1.2.11</version>
</dependency>

Answer 2

今年是 IntelliJ IDEA 2023.1.1 (CE) 和 Springboot 版本 3.0.6 的一年，尽管文档超级丰富，但仍使用 Logback >（Springboot 附带的默认日志记录包），记录到文件（而不是记录到控制台），对我来说是一场噩梦。

我终于成功地让它工作了，因此为了所有人的利益，我发布了已解决的关键障碍：

1. application.properties对于文件日志记录的工作至关重要。它应该位于src/main/resource下。
2. application.properties 应包含单独< /a> 日志文件位置及其名称指令（应忽略“未使用的属性”警告）：

logging.file.path=.
logging.file=myapp.log

3. logback-spring.xml 应为位于src/main/resource （与“application.properties”相同的位置）
4. 这是我的工作示例：

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
   <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
       <file>myapp.log</file>
       <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
           <fileNamePattern>myLogFile.%d{yyyy-MM-dd}.log</fileNamePattern>
           <maxHistory>30</maxHistory>
       </rollingPolicy>
       <encoder>
           <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
       </encoder>
   </appender>

   <root level="INFO">
       <appender-ref ref="FILE" />
   </root>
</configuration>