1.邮件告警-自动发送邮件

1.添加邮箱依赖

    <!-- 邮件start -->
    <dependency>
     <groupId>commons-configuration</groupId>
     <artifactId>commons-configuration</artifactId>
     <version>1.10</version>
    </dependency>
     
      <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-email -->
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-email</artifactId>
        <version>1.5</version>
    </dependency>
​
     <!-- 邮件end -->

2.邮箱配置文件config.properties-数据配置

mail.host = smtp.163.com
mail.login = 13302948121@163.com
mail.pass = YAJCXMCRBACVQLAD
mail.touser =13302948121@163.com,3112078598@qq.com
mail.subject = test_email_20200422_5

3.封装config原有方法

package com.commonUtils;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
public class PropertiesUtils {
​
    private static Configuration config;
​
    static {
        if(null == config){
            try {
                config = new PropertiesConfiguration("config.properties");
            } catch (ConfigurationException e) {
                e.printStackTrace();
            }
        }
    }
​
    private PropertiesUtils(){}
​
    public static String getString(String key){
        return config.getString(key,"");
    }
    
    public static String[] getStringArray(String key){
        return config.getStringArray(key);
    }
    
    public static void main(String[] args) {
        String[] strs = getStringArray("mail.touser");
        for (String string : strs) {
            System.out.println(string);
        }
    }
}

4.使用封装方法、封装发送带图片的邮件

public static void sendImageMsg() {
        //image = http://tupian.baike.com/ipad/a0_78_52_01200000123847134434529793168_jpg.html
        ImageHtmlEmail imail = new ImageHtmlEmail();
        //本地图片直接复制路径
//      String image = "请查收-----<img src = \"data/1.png\">";
        String image = "请查收。<img src = \"http://n.sinaimg.cn/sinakd2020421s/70/w1080h590/20200421/eb04-isqivxf6018351.jpg\">";
        System.out.println(image);
        try {
            //解析网络图片
            DataSourceResolver[] dr = new DataSourceResolver[] {new DataSourceFileResolver(),new DataSourceUrlResolver(new URL("http://"))};
            imail.setDataSourceResolver(new DataSourceCompositeResolver(dr));
            //配置文件map存储结构，通过getString取值
            String login = PropertiesUtils.getString("mail.login");
            String pass = PropertiesUtils.getString("mail.pass");
            String host = PropertiesUtils.getString("mail.host");
            String subject = PropertiesUtils.getString("mail.subject");
            
            imail.setCharset("UTF-8"); // 邮件的字符集
            imail.setAuthentication(login,pass);
            imail.setHostName(host);
            imail.setSubject(subject);
            imail.setFrom(login,"天地之间任逍遥");
            imail.setHtmlMsg(image);//设置正文为图片 文字信息和图片从字符串一起传入
            
            String[] touser = PropertiesUtils.getStringArray("mail.touser");
            //处理收件邮箱
            for (int i = 0; i < touser.length; i++) {
                imail.addTo(touser[i]);
            }
            String ss = imail.send();
            System.out.println(ss+"==================done");
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (EmailException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

5.使用封装方法、封装发送带附件的邮件

public static void sendFileMsg(String... filepath) {
        try {
            HtmlEmail mail = new HtmlEmail();
            String hostname = PropertiesUtils.getString("mail.host");
            String userName = PropertiesUtils.getString("mail.login");
            String password = PropertiesUtils.getString("mail.pass");
            String subject = PropertiesUtils.getString("mail.subject");
            mail.setCharset("utf-8");
            mail.setHostName(hostname);
            mail.setAuthentication(userName, password);
            mail.setSubject(subject);
            mail.setFrom(userName,"111");
            mail.setHtmlMsg("请查收");
            //添加收件人
            String[] touser = PropertiesUtils.getStringArray("mail.touser");
            for (int i = 0; i < touser.length; i++) {
                    mail.addTo(touser[i]);
            }
            //添加附件
            EmailAttachment ea = new EmailAttachment();
            for (String fp : filepath) {
                ea.setPath(fp);
                ea.setDisposition(EmailAttachment.ATTACHMENT);
                ea.setDescription("文件传输");
                File file = new File(fp);
                ea.setName(file.getName());
                mail.attach(ea);
            }
            String ss = mail.send();
            System.out.println(ss+"==================done");
        } catch (EmailException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

2.log4j2 日志文件系统

1.添加依赖

    <!-- slf4j 规范定义和桥架--> 
        <dependency>  
             <groupId>org.slf4j</groupId>  
              <artifactId>jcl-over-slf4j</artifactId>  
             <version>1.7.25</version>  
         </dependency>
    <!-- log4j2 实现--> 
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-slf4j-impl</artifactId>
        <version>2.11.1</version>
    </dependency>

2.log4j2配置文件-log级别配置、文件输出、控制台打印配置

<?xml version="1.0" encoding="UTF-8"?>
<!--设置log4j2的自身log级别为warn-->
<configuration status="warn" monitorInterval="600">
    <appenders>
        <console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%-5p][%-10thread] - %l - %m%n"/>
        </console>
​
        <RollingFile name="RollingFileInfo" fileName="logs/info.log"
                     filePattern="logs/info.log-%d{yyyy-MM-dd}-%i">
            <Filters>
                <ThresholdFilter level="INFO"/>
                <ThresholdFilter level="TRACE" onMatch="DENY" onMismatch="NEUTRAL"/>
            </Filters>
            <PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p][%-10thread]-%C{1}.%M():%L-%m%n"/>
            <Policies>
                <TimeBasedTriggeringPolicy/>
                <SizeBasedTriggeringPolicy size="100 MB"/>
            </Policies>
​
            <DefaultRolloverStrategy max="10">
                <Delete basePath="logs" maxDepth="1">
                    <IfFileName glob="*info.log-*" />
                    <IfLastModified age="10d" />
                </Delete>
            </DefaultRolloverStrategy>
​
        </RollingFile>
​
        <RollingFile name="RollingFileWarn" fileName="logs/warn.log"
                     filePattern="logs/warn.log-%d{yyyy-MM-dd}-%i">
            <Filters>
                <ThresholdFilter level="WARN"/>
                <ThresholdFilter level="ERROR" onMatch="DENY" onMismatch="NEUTRAL"/>
            </Filters>
            <PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p][%-10thread] - %C{1}.%M():%L - %m%n"/>
            <Policies>
                <TimeBasedTriggeringPolicy/>
                <SizeBasedTriggeringPolicy size="100 MB"/>
            </Policies>
​
            <DefaultRolloverStrategy max="10">
                <Delete basePath="logs" maxDepth="1">
                    <IfFileName glob="*warn.log-*" />
                    <IfLastModified age="20d" />
                </Delete>
            </DefaultRolloverStrategy>
​
        </RollingFile>
​
        <RollingFile name="RollingFileError" fileName="./logs/error.log"
                     filePattern="logs/error.log-%d{yyyy-MM-dd}-%i">
            <ThresholdFilter level="ERROR"/>
            <PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p][%-10thread] - %C{1}.%M():%L - %m%n"/>
            <Policies>
                <TimeBasedTriggeringPolicy/>
                <SizeBasedTriggeringPolicy size="100 MB"/>
            </Policies>
​
            <DefaultRolloverStrategy max="10">
                <Delete basePath="logs" maxDepth="1">
                    <IfFileName glob="*error.log-*" />
                    <IfLastModified age="30d" />
                </Delete>
            </DefaultRolloverStrategy>
​
        </RollingFile>
​
    </appenders>
​
    <loggers>
        <!--过滤掉spring和hibernate的一些无用的debug信息-->
        <logger name="org.springframework" level="INFO"></logger>
        <logger name="org.hibernate" level="ERROR">
            <AppenderRef ref="Console"/>
        </logger>
        <logger name="com.baidu.unbiz" level="INFO">
            <appender-ref ref="Console"/>
        </logger>
        <logger name="org.apache.zookeeper" level="WARN">
            <appender-ref ref="Console"/>
        </logger>
        <logger name="org.apache.curator" level="WARN">
            <appender-ref ref="Console"/>
        </logger>
        <logger name="com.xxl.conf" level="WARN">
            <appender-ref ref="Console"/>
        </logger>
        <root level="info">
            <appender-ref ref="Console"/>
            <appender-ref ref="RollingFileInfo"/>
            <appender-ref ref="RollingFileWarn"/>
            <appender-ref ref="RollingFileError"/>
        </root>
    </loggers>
​
</configuration>
​

3.log简单使用

private static final Logger logger = LoggerFactory.getLogger(LogTest.class);
logger.info("info信息");
logger.warn("warn警告警告");
logger.error("error出错了");
logger.debug("debug模式");

3.邮件可以配合html等渲染成高级邮件-模板引擎：