<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[sinat_34447820的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/sinat_34447820</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; sinat_34447820]]></copyright><item><title><![CDATA[Mysql中用SQL增加、删除字段，修改字段名、字段类型、注释，调整字段顺序总结]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/102648616</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/102648616</guid><author>sinat_34447820</author><pubDate>Sun, 20 Oct 2019 14:17:14 +0800</pubDate><description><![CDATA[1.增加一个字段
代码如下	复制代码
//增加一个字段，默认为空
alter table user add COLUMN new1 VARCHAR(20) DEFAULT NULL;
//增加一个字段，默认不能为空
alter table user add COLUMN new2 VARCHAR(20) NOT NULL;
2.批量怎加字段
方法一
这里可以使用事务
代码如下	复制代码
bagin...]]></description><category></category></item><item><title><![CDATA[时间转换]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/102535297</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/102535297</guid><author>sinat_34447820</author><pubDate>Sun, 13 Oct 2019 17:27:01 +0800</pubDate><description><![CDATA[/**
 * @ 业务描述：
 * @ Package_name：com.ratel.easypoi
 * @ Project_name：easypoi
 * @ Author：ratelfu@qq.com
 * @ Create_time：2019-01-11 10:37
 * @ Copyright (c) ratelfu 版权所有
 */

import java.text.ParseE...]]></description><category></category></item><item><title><![CDATA[JacksonUtil]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/102157409</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/102157409</guid><author>sinat_34447820</author><pubDate>Sat, 05 Oct 2019 16:55:05 +0800</pubDate><description><![CDATA[&lt;dependency&gt;
			&lt;groupId&gt;org.apache.commons&lt;/groupId&gt;
			&lt;artifactId&gt;commons-lang3&lt;/artifactId&gt;
			&lt;version&gt;3.2.1&lt;/version&gt;
		&lt;/dependency&gt;

		&lt;dep...]]></description><category></category></item><item><title><![CDATA[conversion]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/102151577</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/102151577</guid><author>sinat_34447820</author><pubDate>Sat, 05 Oct 2019 15:21:46 +0800</pubDate><description><![CDATA[Maven依赖
		&lt;dependency&gt;
			&lt;groupId&gt;com.alibaba&lt;/groupId&gt;
			&lt;artifactId&gt;fastjson&lt;/artifactId&gt;
			&lt;version&gt;1.2.38&lt;/version&gt;
		&lt;/dependency&gt;


import com....]]></description><category></category></item><item><title><![CDATA[JsonUtils]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/102151419</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/102151419</guid><author>sinat_34447820</author><pubDate>Sat, 05 Oct 2019 15:18:51 +0800</pubDate><description><![CDATA[import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind....]]></description><category></category></item><item><title><![CDATA[JsonUtil]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/102151329</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/102151329</guid><author>sinat_34447820</author><pubDate>Sat, 05 Oct 2019 15:17:48 +0800</pubDate><description><![CDATA[import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind....]]></description><category></category></item><item><title><![CDATA[JsonToUtil]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/102151254</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/102151254</guid><author>sinat_34447820</author><pubDate>Sat, 05 Oct 2019 15:16:20 +0800</pubDate><description><![CDATA[import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.IOException;
import java...]]></description><category></category></item><item><title><![CDATA[随机生成中文姓名]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/102092934</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/102092934</guid><author>sinat_34447820</author><pubDate>Fri, 04 Oct 2019 20:34:51 +0800</pubDate><description><![CDATA[mport java.text.SimpleDateFormat;
import java.util.Date;

/**
 * 随机生成中文姓名，性别，Email，手机号，住址
 * @author X-rapido
 */
public class RandomValue {
    public static String base = "abcdefghijklmnopqrstuvwxyz...]]></description><category></category></item><item><title><![CDATA[UUIDUtil]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/101450901</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/101450901</guid><author>sinat_34447820</author><pubDate>Fri, 27 Sep 2019 00:02:53 +0800</pubDate><description><![CDATA[import java.util.UUID;

public class UUIDUtil {
    public static String uuid() {
        return UUID.randomUUID().toString().replace("-", "");
    }

    public static void main(String[] args) {
    ...]]></description><category></category></item><item><title><![CDATA[ID自动生成工具]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/101485711</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/101485711</guid><author>sinat_34447820</author><pubDate>Fri, 27 Sep 2019 00:02:15 +0800</pubDate><description><![CDATA[import java.util.Date;
import java.util.Random;


public class IDUtils {

	private static int seq = 0;//序列
	private static final int LIMIT = 100000;//上限
	private static Date date = new Date();

	/**
	...]]></description><category></category></item><item><title><![CDATA[时间转换工具]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/101396585</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/101396585</guid><author>sinat_34447820</author><pubDate>Wed, 25 Sep 2019 23:48:18 +0800</pubDate><description><![CDATA[&lt;!-- 时间操作组件 --&gt;
        &lt;dependency&gt;
            &lt;groupId&gt;joda-time&lt;/groupId&gt;
            &lt;artifactId&gt;joda-time&lt;/artifactId&gt;
            &lt;version&gt;2.3&lt;/ver...]]></description><category></category></item><item><title><![CDATA[日历工具]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/101396500</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/101396500</guid><author>sinat_34447820</author><pubDate>Wed, 25 Sep 2019 23:45:36 +0800</pubDate><description><![CDATA[import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * Created by liuyangyang_live on 2019/9/25.
 */
public class CalendarUtil {

    public static final Strin...]]></description><category></category></item><item><title><![CDATA[SpringCloud顺口溜]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/82759374</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/82759374</guid><author>sinat_34447820</author><pubDate>Tue, 18 Sep 2018 16:15:25 +0800</pubDate><description><![CDATA[春云一站式服务，众多大牌来支持
生态丰富社区强，按需取用很轻量
注册中心Eureka，就像水浒梁山伯
智能网关ZUUL， 一夫当关可路由
客户端负载均衡，负责调度和选择
断路器Hystrix，变来变去魔术师
分布式配置中心，云端存储免重启
服务间调用Feign，假装自己在纽约
服务追踪Sleuth，私家侦探记录全
日志聚合ZIPkin，一网打尽全链路
没有比较没伤害，Dubbo只是一小块

...]]></description><category></category></item><item><title><![CDATA[Linux基础和监控相关的命令]]></title><link>https://blog.youkuaiyun.com/sinat_34447820/article/details/82756534</link><guid>https://blog.youkuaiyun.com/sinat_34447820/article/details/82756534</guid><author>sinat_34447820</author><pubDate>Tue, 18 Sep 2018 13:46:36 +0800</pubDate><description><![CDATA[一
1.grep
2.find
3.uptime
4.lsof
5.ulimit
6.curl
7.scp
8.vi和vim
9.dos2unix和unix2dos
10.awk
11.
sed
tr
cur
wc
sort
uniq
zip
tar
二、查看活动进程的命令
1 PS
2.top
3.pidstat
三、内存的命令
1.free
2.pmap
四、CPU的监控命令
1.vmstat...]]></description><category></category></item></channel></rss>