本文介紹了如何在log4j2中以編程方式配置SmtpAppender的處理方法，對大家解決問題具有一定的參考價值，需要的朋友們下面隨著小編來一起學習吧！
問題描述
以下是我正在編寫的代碼：
目的是以編程方式配置SmtpAppender。除了SmtpAppender，我還需要以編程方式添加RollingFileAppender和控制臺附加器。
package vish;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.core.appender.SmtpAppender;
import org.apache.logging.log4j.core.config.builder.api.ConfigurationBuilder;
import org.apache.logging.log4j.core.config.builder.api.ConfigurationBuilderFactory;
import org.apache.logging.log4j.core.config.builder.api.LayoutComponentBuilder;
import org.apache.logging.log4j.core.config.builder.api.RootLoggerComponentBuilder;
import org.apache.logging.log4j.core.config.builder.impl.BuiltConfiguration;
public class SmtpAppenderBuilder {
public static void main(String[] args) {
String pattern = "%d{MM-dd@HH\:mm\:ss}%-4r %-5p [%t] %37c %3x - %m%n";
ConfigurationBuilder<BuiltConfiguration> builder = ConfigurationBuilderFactory.newConfigurationBuilder();
LayoutComponentBuilder layoutBuilder = builder.newLayout("PatternLayout").addAttribute("pattern", pattern);
RootLoggerComponentBuilder rootLogger = builder.newRootLogger(Level.DEBUG);
builder.setStatusLevel(Level.DEBUG);
org.apache.logging.log4j.core.appender.SmtpAppender.Builder smtpBuilder = SmtpAppender.newBuilder();
smtpBuilder.setName("emailAppender");
smtpBuilder.setSmtpUsername("[email protected]");
smtpBuilder.setSmtpPassword("###YpSv1925");
smtpBuilder.setSmtpProtocol("https");
smtpBuilder.setSmtpHost("smtp.gmail.com");
smtpBuilder.setBufferSize(512);
smtpBuilder.setTo("[email protected]");
smtpBuilder.setSubject("testing");
}
}
如何將smtpAppender添加到配置或rootLogger？
推薦答案
您混淆了兩個API：
ConfigurationBuilder API，這是與配置文件最接近的代碼等價物。它只創建實際日志組件的定義，真正的定義是在配置對象上調用Configuration#initialize()時創建的。您可以創建SMTPAppender的定義：
private Configuration createConfig() {
ConfigurationBuilder<BuiltConfiguration> builder = ConfigurationBuilderFactory.newConfigurationBuilder()//
.setStatusLevel(Level.DEBUG);
LayoutComponentBuilder layoutBuilder = builder.newLayout("PatternLayout")//
.addAttribute("pattern", "%d{MM-dd@HH\:mm\:ss}%-4r %-5p [%t] %37c %3x - %m%n");
AppenderComponentBuilder appenderBuilder = builder.newAppender("emailAppender", "SMTP")//
.addAttribute("smtpUsername", "[email protected]")
.addAttribute("smtpPassword", "###YpSv1925")
.addAttribute("smtpProtocol", "smtps")
.addAttribute("smtpHost", "smtp.gmail.com")
.addAttribute("to", "[email protected]")
.addAttribute("subject", "testing")
.add(layoutBuilder);
AppenderRefComponentBuilder appenderRefBuilder = builder.newAppenderRef("emailAppender");
RootLoggerComponentBuilder rootLoggerBuilder = builder.newRootLogger(Level.DEBUG)//
.add(appenderRefBuilder);
return builder.add(appenderBuilder)//
.add(rootLoggerBuilder)
.build();
}
Log4j 2.x組件的實際構建器，由Configuration#initialize使用上面的定義通過反射調用。您也可以直接使用它們：
private static Configuration createConfig2() {
return new AbstractConfiguration(null, ConfigurationSource.NULL_SOURCE) {
@Override
protected void doConfigure() {
Layout<String> layout = PatternLayout.newBuilder()//
.withPattern("%d{MM-dd@HH\:mm\:ss}%-4r %-5p [%t] %37c %3x - %m%n")
.withConfiguration(this)
.build();
Appender appender = SmtpAppender.newBuilder()//
.setName("emailAppender")
.setSmtpUsername("[email protected]")
.setSmtpPassword("###YpSv1925")
.setSmtpProtocol("smtps")
.setTo("[email protected]")
.setSubject("testing")
.setLayout(layout)
.setConfiguration(this)
.build();
LoggerConfig rootLogger = getRootLogger();
rootLogger.setLevel(Level.DEBUG);
rootLogger.addAppender(appender, null, null);
}
};
}
這兩個Configuration是等效的，您可以使用：
將它們應用于當前上下文
Configurator.reconfigure(config);
但是，它們將在Configurator.reconfigure()丟失，除非您定義your own ConfigurationFactory。
這篇關于如何在log4j2中以編程方式配置SmtpAppender的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，
