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我第一次在个人项目中使用 java spring，我似乎无法让 application.properties 中的任何属性正常工作。我已经将它简化为这个测试用例，它似乎没有做任何事情：

应用程序属性

logging.level.root=WARN

AppInitalizer.java：

import javax.servlet.Filter;

import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


@SpringBootApplication
@ConfigurationProperties
public class AppInitializer
    extends AbstractAnnotationConfigDispatcherServletInitializer {

    private static final Logger log = LoggerFactory.getLogger(AppInitializer.class);

    @Override
    protected Class<?>[] getRootConfigClasses() {
        log.debug("This is a debug message");
        log.error("This is an error message");
        return new Class[] {};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[] {};
    }

    @Override
    protected String[] getServletMappings() {
        return new String[] { "/" };
    }

    @Override
    protected Filter[] getServletFilters() {
        return new Filter[] {};
    }
}

部署后记录：

20:08:26.113 [http-nio-8080-exec-32] DEBUG AppInitializer - This is a debug message
20:08:26.114 [http-nio-8080-exec-32] ERROR AppInitializer - This is an error message

这两个文件部署到类路径根目录的同一目录中。

应该只显示第二条日志消息，但我无法处理第一条。

相关的 ivy.xml 配置：

<!-- Spring Framework -->
<dependency org="org.springframework"
            name="spring-webmvc" rev="5.0.9.RELEASE"/>
<!-- Logging -->
<dependency org="log4j" name="log4j" rev="1.2.17"/>

编辑：我将我的记录器切换到 slf4j 并且仍然不走运。

Edit2：添加了依赖项

Edit3：我正在查看他的日志并发现了这个：

10:28:22.628 [http-nio-8080-exec-114] INFO org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization started
10:28:22.634 [http-nio-8080-exec-114] DEBUG org.springframework.web.context.support.StandardServletEnvironment - Adding PropertySource 'servletConfigInitParams' with lowest search precedence
10:28:22.634 [http-nio-8080-exec-114] DEBUG org.springframework.web.context.support.StandardServletEnvironment - Adding PropertySource 'servletContextInitParams' with lowest search precedence
10:28:22.636 [http-nio-8080-exec-114] DEBUG org.springframework.web.context.support.StandardServletEnvironment - Adding PropertySource 'jndiProperties' with lowest search precedence
10:28:22.636 [http-nio-8080-exec-114] DEBUG org.springframework.web.context.support.StandardServletEnvironment - Adding PropertySource 'systemProperties' with lowest search precedence
10:28:22.636 [http-nio-8080-exec-114] DEBUG org.springframework.web.context.support.StandardServletEnvironment - Adding PropertySource 'systemEnvironment' with lowest search precedence
10:28:22.636 [http-nio-8080-exec-114] DEBUG org.springframework.web.context.support.StandardServletEnvironment - Initialized StandardServletEnvironment with PropertySources [StubPropertySource@36449077 {name='servletConfigInitParams', properties=java.lang.Object@24214aae}, StubPropertySource@1983551321 {name='servletContextInitParams', properties=java.lang.Object@6e836355}, JndiPropertySource@219519027 {name='jndiProperties', properties=org.springframework.jndi.JndiLocatorDelegate@234fc705}, MapPropertySource@23923818 {name='systemProperties', properties={awt.toolkit=sun.awt.X11.XToolkit, java.specification.version=10, file.encoding.pkg=sun.io, sun.cpu.isalist=, sun.jnu.encoding=UTF-8, java.class.path=/usr/share/tomcat8/bin/bootstrap.jar:/usr/share/tomcat8/bin/tomcat-juli.jar, java.vm.vendor=Oracle Corporation, sun.arch.data.model=64, java.vendor.url=http://java.oracle.com/, catalina.useNaming=true, user.timezone=America/Los_Angeles, os.name=Linux, java.vm.specification.version=10, sun.java.launcher=SUN_STANDARD, user.country=US, sun.boot.library.path=/usr/lib/jvm/java-11-openjdk-amd64/lib, sun.java.command=org.apache.catalina.startup.Bootstrap start, jdk.debug=release, sun.cpu.endian=little, user.home=/var/lib/tomcat8, user.language=en, java.specification.vendor=Oracle Corporation, java.naming.factory.url.pkgs=org.apache.naming, java.version.date=2018-07-17, java.home=/usr/lib/jvm/java-11-openjdk-amd64, ignore.endorsed.dirs=, file.separator=/, java.vm.compressedOopsMode=32-bit, line.separator=
10:28:22.639 [http-nio-8080-exec-114] DEBUG org.springframework.web.context.support.StandardServletEnvironment - Replacing PropertySource 'servletContextInitParams' with 'servletContextInitParams'
10:28:22.639 [http-nio-8080-exec-114] INFO org.springframework.web.context.support.AnnotationConfigWebApplicationContext - Refreshing Root WebApplicationContext: startup date [Tue Jan 15 10:28:22 PST 2019]; root of context hierarchy

似乎没有一个属性源是从我拥有 application.properties 的类路径加载的。

4

3 回答 3

1

请在 apache.commons.logging 上使用 slf4j.Logger

于 2019-01-02T07:25:34.583 回答
1

使用 slf4j 的LoggerFactory而不是org.apache.commons.logging.LogFactory：

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

private final Logger log = LoggerFactory.getLogger(this.getClass());

或静态记录器：

private static final Logger log = LoggerFactory.getLogger(AppInitializer.class);
于 2019-01-02T07:36:03.233 回答
-1

  1. Spring 还引入了新的 @PropertySource 注释，作为向环境添加属性源的便捷机制。此注解将与基于 Java 的配置和 @Configuration 注解结合使用：

    @Configuration @PropertySource("classpath:foo.properties") public class AppInitializer{ //... }

  2. 注册新属性文件的另一种非常有用的方法是使用占位符来允许您在运行时动态选择正确的文件；例如：

    @PropertySource({ "classpath:persistence-${envTarget:mysql}.properties" })

  3. 您可以在 XML 中使用，Spring 可以通过命名空间元素访问新的属性文件：

foo.properties 文件应该放在 /src/main/resources 下，以便在运行时在类路径中可用。

于 2019-01-02T06:01:47.270 回答