使用Logback设置property参数方式
作者:yh_1524
这篇文章主要介绍了使用Logback设置property参数方式,具有很好的参考价值,希望对大家有所帮助。如有错误或未考虑完全的地方,望不吝赐教
Logback设置property参数
更多参数设置查看官方文档
1.方式一:直接配置参数值
<configuration> <property name="USER_HOME" value="/home/sebastien" /> <appender name="FILE" class="ch.qos.logback.core.FileAppender"> <file>${USER_HOME}/myApp.log</file> <encoder> <pattern>%msg%n</pattern> </encoder> </appender> <root level="debug"> <appender-ref ref="FILE" /> </root> </configuration>
2.方式二:通过file属性引入参数文件
<configuration> <!-- 引入项目内的文件指定文件所在的包路径 --> <property file="src/main/java/chapters/configuration/variables1.properties" /> <!-- 引入项目外的文件指定文件所在的绝对路径 --> <property file="/home/logback/variables.properties" /> <appender name="FILE" class="ch.qos.logback.core.FileAppender"> <file>${USER_HOME}/myApp.log</file> <encoder> <pattern>%msg%n</pattern> </encoder> </appender> <root level="debug"> <appender-ref ref="FILE" /> </root> </configuration>
3.方式三:通过resource属性引入参数文件
<configuration> <!-- 使用classpath的方式引入文件,只需写明文件名即可 --> <property resource="resource1.properties" /> <appender name="FILE" class="ch.qos.logback.core.FileAppender"> <file>${USER_HOME}/myApp.log</file> <encoder> <pattern>%msg%n</pattern> </encoder> </appender> <root level="debug"> <appender-ref ref="FILE" /> </root> </configuration>
4.引入文件处理类PropertyAction
文件所在路径:ch.qos.logback.core.joran.action
在begin方法中读取引入的properies文件,如果引入的文件中的参数值需要进行额外的加工处理,可重写覆盖此类,在begin或loadAndSetProperties方法中添加相关逻辑
/** * Logback: the reliable, generic, fast and flexible logging framework. * Copyright (C) 1999-2015, QOS.ch. All rights reserved. * * This program and the accompanying materials are dual-licensed under * either the terms of the Eclipse Public License v1.0 as published by * the Eclipse Foundation * * or (per the licensee's choosing) * * under the terms of the GNU Lesser General Public License version 2.1 * as published by the Free Software Foundation. */ package ch.qos.logback.core.joran.action; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.net.URL; import java.util.Properties; import org.xml.sax.Attributes; import ch.qos.logback.core.joran.action.ActionUtil.Scope; import ch.qos.logback.core.joran.spi.InterpretationContext; import ch.qos.logback.core.pattern.util.RegularEscapeUtil; import ch.qos.logback.core.util.Loader; import ch.qos.logback.core.util.OptionHelper; /** * This class serves as a base for other actions, which similar to the ANT * <property> task which add/set properties of a given object. * * This action sets new substitution properties in the logging context by name, * value pair, or adds all the properties passed in "file" or "resource" * attribute. * * @author Ceki Gülcü */ public class PropertyAction extends Action { static final String RESOURCE_ATTRIBUTE = "resource"; static String INVALID_ATTRIBUTES = "In <property> element, either the \"file\" attribute alone, or " + "the \"resource\" element alone, or both the \"name\" and \"value\" attributes must be set."; /** * Set a new property for the execution context by name, value pair, or adds * all the properties found in the given file. * */ public void begin(InterpretationContext ec, String localName, Attributes attributes) { if ("substitutionProperty".equals(localName)) { addWarn("[substitutionProperty] element has been deprecated. Please use the [property] element instead."); } String name = attributes.getValue(NAME_ATTRIBUTE); String value = attributes.getValue(VALUE_ATTRIBUTE); String scopeStr = attributes.getValue(SCOPE_ATTRIBUTE); Scope scope = ActionUtil.stringToScope(scopeStr); if (checkFileAttributeSanity(attributes)) { String file = attributes.getValue(FILE_ATTRIBUTE); file = ec.subst(file); try { FileInputStream istream = new FileInputStream(file); loadAndSetProperties(ec, istream, scope); } catch (FileNotFoundException e) { addError("Could not find properties file [" + file + "]."); } catch (IOException e1) { addError("Could not read properties file [" + file + "].", e1); } } else if (checkResourceAttributeSanity(attributes)) { String resource = attributes.getValue(RESOURCE_ATTRIBUTE); resource = ec.subst(resource); URL resourceURL = Loader.getResourceBySelfClassLoader(resource); if (resourceURL == null) { addError("Could not find resource [" + resource + "]."); } else { try { InputStream istream = resourceURL.openStream(); loadAndSetProperties(ec, istream, scope); } catch (IOException e) { addError("Could not read resource file [" + resource + "].", e); } } } else if (checkValueNameAttributesSanity(attributes)) { value = RegularEscapeUtil.basicEscape(value); // now remove both leading and trailing spaces value = value.trim(); value = ec.subst(value); ActionUtil.setProperty(ec, name, value, scope); } else { addError(INVALID_ATTRIBUTES); } } void loadAndSetProperties(InterpretationContext ec, InputStream istream, Scope scope) throws IOException { Properties props = new Properties(); props.load(istream); istream.close(); ActionUtil.setProperties(ec, props, scope); } boolean checkFileAttributeSanity(Attributes attributes) { String file = attributes.getValue(FILE_ATTRIBUTE); String name = attributes.getValue(NAME_ATTRIBUTE); String value = attributes.getValue(VALUE_ATTRIBUTE); String resource = attributes.getValue(RESOURCE_ATTRIBUTE); return !(OptionHelper.isEmpty(file)) && (OptionHelper.isEmpty(name) && OptionHelper.isEmpty(value) && OptionHelper.isEmpty(resource)); } boolean checkResourceAttributeSanity(Attributes attributes) { String file = attributes.getValue(FILE_ATTRIBUTE); String name = attributes.getValue(NAME_ATTRIBUTE); String value = attributes.getValue(VALUE_ATTRIBUTE); String resource = attributes.getValue(RESOURCE_ATTRIBUTE); return !(OptionHelper.isEmpty(resource)) && (OptionHelper.isEmpty(name) && OptionHelper.isEmpty(value) && OptionHelper.isEmpty(file)); } boolean checkValueNameAttributesSanity(Attributes attributes) { String file = attributes.getValue(FILE_ATTRIBUTE); String name = attributes.getValue(NAME_ATTRIBUTE); String value = attributes.getValue(VALUE_ATTRIBUTE); String resource = attributes.getValue(RESOURCE_ATTRIBUTE); return (!(OptionHelper.isEmpty(name) || OptionHelper.isEmpty(value)) && (OptionHelper.isEmpty(file) && OptionHelper.isEmpty(resource))); } public void end(InterpretationContext ec, String name) { } public void finish(InterpretationContext ec) { } }
总结
以上为个人经验,希望能给大家一个参考,也希望大家多多支持脚本之家。