应用启动出现冗余Thymeleaf DEBUG日志，求助排查来源

云上老周

2026-8-13

问题

应用启动时会输出大量不必要的Thymeleaf DEBUG级初始化日志，不清楚日志来源。当前pom.xml中未直接添加日志依赖，但此前添加后又删除日志依赖后，仍遗留这些日志。尝试移除所有日志依赖及日志配置文件，问题依旧。

日志内容

[2022-11-11 02:26:14,343] Artifact al_project1:war: Artifact is deployed successfully
[2022-11-11 02:26:14,343] Artifact al_project1:war: Deploy took 7,112 milliseconds
11.11.2022 14:26:15.931 [http-nio-8082-exec-1] DEBUG o.t.TemplateEngine - [THYMELEAF] INITIALIZING TEMPLATE ENGINE
11.11.2022 14:26:16.222 [http-nio-8082-exec-1] DEBUG o.t.T.CONFIG - Initializing Thymeleaf Template engine configuration...
[THYMELEAF] TEMPLATE ENGINE CONFIGURATION:
[THYMELEAF] * Thymeleaf version: 3.0.15.RELEASE (built 2022-01-31T00:00:31+0000)
[THYMELEAF] * Cache Manager implementation: org.thymeleaf.cache.StandardCacheManager
[THYMELEAF] * Template resolvers:
[THYMELEAF]     * org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver
[THYMELEAF] * Message resolvers:
[THYMELEAF]     * org.thymeleaf.spring5.messageresolver.SpringMessageResolver
[THYMELEAF] * Link builders:
[THYMELEAF]     * org.thymeleaf.linkbuilder.StandardLinkBuilder
[THYMELEAF] * Dialect: SpringStandard (org.thymeleaf.spring5.dialect.SpringStandardDialect)
[THYMELEAF]     * Prefix: "th"
[THYMELEAF]     * Processors for Template Mode: HTML
[THYMELEAF]         * Element Tag Processors by [matching element and attribute name] [precedence]:
[THYMELEAF]             * [* {th:include,data-th-include}] [100]: org.thymeleaf.standard.processor.StandardIncludeTagProcessor
[THYMELEAF]             * [* {th:insert,data-th-insert}] [100]: org.thymeleaf.standard.processor.StandardInsertTagProcessor
[THYMELEAF]             * [* {th:replace,data-th-replace}] [100]: org.thymeleaf.standard.processor.StandardReplaceTagProcessor
[THYMELEAF]             * [* {th:substituteby,data-th-substituteby}] [100]: org.thymeleaf.standard.processor.StandardSubstituteByTagProcessor
[THYMELEAF]             * [* {th:each,data-th-each}] [200]: org.thymeleaf.standard.processor.StandardEachTagProcessor
[THYMELEAF]             * [* {th:switch,data-th-switch}] [250]: org.thymeleaf.standard.processor.StandardSwitchTagProcessor
[THYMELEAF]             * [* {th:case,data-th-case}] [275]: org.thymeleaf.standard.processor.StandardCaseTagProcessor
[THYMELEAF]             * [* {th:if,data-th-if}] [300]: org.thymeleaf.standard.processor.StandardIfTagProcessor
[THYMELEAF]             * [* {th:unless,data-th-unless}] [400]: org.thymeleaf.standard.processor.StandardUnlessTagProcessor
.......
[THYMELEAF]         * #httpServletRequest
[THYMELEAF]         * #httpSession
[THYMELEAF]         * #fields
[THYMELEAF]         * #themes
[THYMELEAF]         * #mvc
[THYMELEAF]         * #requestdatavalues
[THYMELEAF]     * Execution Attributes:
[THYMELEAF]         * "StandardExpressionParser": Standard Expression Parser
[THYMELEAF]         * "StandardJavaScriptSerializer": org.thymeleaf.standard.serializer.StandardJavaScriptSerializer@453e1f4
[THYMELEAF]         * "StandardCSSSerializer": org.thymeleaf.standard.serializer.StandardCSSSerializer@3f982a20
[THYMELEAF]         * "EnableSpringELCompiler": true
[THYMELEAF]         * "StandardVariableExpressionEvaluator": SpringEL
[THYMELEAF]         * "StandardConversionService": org.thymeleaf.spring5.expression.SpringStandardConversionService@2395c904
[THYMELEAF] TEMPLATE ENGINE CONFIGURED OK
11.11.2022 14:26:16.347 [http-nio-8082-exec-1] DEBUG o.t.TemplateEngine - [THYMELEAF] TEMPLATE ENGINE INITIALIZED

pom.xml内容

<?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>spring.audiolessons.18_10.webapp</groupId>
  <artifactId>spring_audiolessons_18_10_webapp</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>spring_audiolessons_18_10_webapp Maven Webapp</name>
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>17</maven.compiler.source>
    <maven.compiler.target>17</maven.compiler.target>

    <spring.version>5.3.23</spring.version>
    <encoding.type>UTF-8</encoding.type>
    <junit.jupiter.version>5.9.0</junit.jupiter.version>
    <junit.platform.version>1.9.0</junit.platform.version>

    <project.build.sourceEncoding>${encoding.type}</project.build.sourceEncoding>
    <project.reporting.outputEncoding>${encoding.type}</project.reporting.outputEncoding>
    <file.encoding>${encoding.type}</file.encoding>
  </properties>


  <dependencies>

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.1</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.thymeleaf</groupId>
      <artifactId>thymeleaf-spring5</artifactId>
      <version>3.0.15.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework.data</groupId>
      <artifactId>spring-data-commons</artifactId>
      <version>2.7.5</version>
    </dependency>

    <dependency>
      <groupId>org.hibernate.validator</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>6.1.6.Final</version> <!--8.0.0.Final - Bullshit-->
    </dependency>

    <dependency>
      <groupId>org.postgresql</groupId>
      <artifactId>postgresql</artifactId>
      <version>42.5.0</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.13.2</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-engine</artifactId>
      <version>${junit.jupiter.version}</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-api</artifactId>
      <version>${junit.jupiter.version}</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-params</artifactId>
      <version>${junit.jupiter.version}</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.junit.platform</groupId>
      <artifactId>junit-platform-suite</artifactId>
      <version>${junit.platform.version}</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.18.12</version>
      <scope>provided</scope>
    </dependency>

  </dependencies>

  <build>
    <finalName>spring_audiolessons_18_10_webapp</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (maybe moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

解决方案

日志来源说明

Thymeleaf依赖SLF4J日志抽象层，即使你没在pom.xml中直接添加日志依赖，thymeleaf-spring5也会通过依赖传递引入slf4j-api。而你的应用服务器（比如Tomcat）或者其他依赖（如Spring）可能默认提供了日志实现（比如JUL、Logback或Log4j），所以即使删除手动添加的日志依赖，依然会有日志输出，且默认级别可能为DEBUG。

具体解决步骤

添加日志配置文件
在src/main/resources下创建日志配置文件（以Logback为例，创建logback.xml），将Thymeleaf相关包的日志级别调整为INFO或更高：

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <!-- 控制Thymeleaf日志级别 -->
    <logger name="org.thymeleaf" level="INFO"/>
    <logger name="org.thymeleaf.TemplateEngine" level="INFO"/>

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

如果使用其他日志框架

若使用Log4j2，创建log4j2.xml，添加对应配置：

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n"/>
        </Console>
    </Appenders>
    <Loggers>
        <Logger name="org.thymeleaf" level="INFO"/>
        <Root level="INFO">
            <AppenderRef ref="Console"/>
        </Root>
    </Loggers>
</Configuration>

可选：指定日志实现依赖
如果你希望统一日志实现，可以在pom.xml中添加具体的日志依赖（比如Logback），确保依赖传递的日志实现被覆盖：
```
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>1.2.11</version>
</dependency>
```

内容的提问来源于stack exchange，提问作者Никита Мозолевский

应用启动出现冗余Thymeleaf DEBUG日志，求助排查来源

问题 #

日志内容 #

pom.xml内容 #

解决方案 #

日志来源说明 #

具体解决步骤 #

问题

日志内容

pom.xml内容

解决方案

日志来源说明

具体解决步骤