Elasticsearch依据字段长度过滤

查询title字段的长度小于9的文档

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GET /nm*/_search
{
  "query": {
    "filtered": {
      "query": {
          "match": {
              "title": {
                  "query": "黄晓明和杨颖结婚",
                  "operator": "and",
                  "minimum_should_match": "90%"
              }
          }        
      },
      "filter": {
        "script" : {
            "script" : "doc['title'].size() < 9"
        }
      }
    }
  }
}

代理模式

代理模式

为另一个对象提供一个替身或占位符以访问这个对象.

代理模式中远程代理和动态代理比较常用

Elasticsearch配置ik分词器

假定你已经安装了elasticsearch2.1.0和maven, 下面的步骤针对elasticsearch2.1.0有效, 其它版本可能不使用

下载ik

因为我的elasticsearch是2.1.0,所以去这里下载https://github.com/medcl/elasticsearch-analysis-ik/releases/tag/v1.6.1

其它版本的elasticsearch对应的ik去https://github.com/medcl/elasticsearch-analysis-ik 下载

解压ik，并进入ik

执行 mvn package 编译ik

复制文件

将elasticsearch-analysis-ik-master/target/releases/elasticsearch-analysis-ik-1.6.1.zip 拷贝到es的plugin/ik目录下并解压

同时将elasticsearch-analysis-ik-master/config/ik文件夹拷贝到es的config下

然后重启es,就可以了.

Java发送邮件 

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package com.google.utils;

import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message.RecipientType;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

/**
<dependency>
	<groupId>javax.mail</groupId>
	<artifactId>mail</artifactId>
	<version>1.4.7</version>
</dependency>
*/
public class EmailUtil {
	
	private static Properties properties = null;
	
	public static void init(Properties properties)
	{
		EmailUtil.properties = properties;
	}
	
	public static void send(String subject, String message) {
		try {
			Authenticator authenticator = new Authenticator() {
			    @Override
			    protected PasswordAuthentication getPasswordAuthentication() {
			        String userName = properties.getProperty("mail.user");
			        String password = properties.getProperty("mail.password");
			        return new PasswordAuthentication(userName, password);
			    }
			};
			Session session = Session.getInstance(properties, authenticator);
			MimeMessage mime = new MimeMessage(session);
			InternetAddress form = new InternetAddress(properties.getProperty("mail.user"));
			mime.setFrom(form);
			InternetAddress to = new InternetAddress(properties.getProperty("main.to"));
			mime.setRecipient(RecipientType.TO, to);

			mime.setSubject(subject);
			mime.setContent(message, "text/html;charset=UTF-8");
			
			Transport.send(mime);
		} catch (AddressException e) {
			e.printStackTrace();
		} catch (MessagingException e) {
			e.printStackTrace();
		}
	}
	
	public static void main(String[] args) {
		Properties properties = new Properties();
		properties.put("mail.smtp.auth", "true");
		properties.put("mail.smtp.host", "smtp.exmail.qq.com");
		properties.put("mail.user", "user1@example.com");
		properties.put("mail.password", "password");
		properties.put("main.to","user2@qq.com");
		
		EmailUtil.init(properties);
		EmailUtil.send("hello", "这是来自大洋彼岸的声音!");
	}

}

将启动命令中包含某个字符串的进行杀死 

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[root@dn01 testbash]# ps -ef | grep hello
root     24794  7457  0 11:09 pts/2    00:00:00 sh hello.sh
root     24910  7457  0 11:09 pts/2    00:00:00 sh hello.sh
root     25295  7457  0 11:11 pts/2    00:00:00 grep hello

使用

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ps aux | grep hello | grep -v grep |awk '{print $2}'| xargs kill -9

可以将上述的前两个进程杀死