Go 微服务实战 38 讲

概述ｄｏｗｎｌｏａｄ：Go微服务实战38讲 适合谁学： 1.服务端开发中高级工程师； 2.正在实践微服务的架构师，希望加深对微服务架构的理解； 3.公司内部技术栈往Go迁移，而你需要参与该部分的技术重构； 4.渴望成为服务端架构师并为之努力的开发人员。背景介绍 随着云原生应用的流行，作为其代

ｄｏｗｎｌｏａｄ：Go 微服务实战 38 讲

 

适合谁学：

 

1.服务端开发中高级工程师；

 

2.正在实践微服务的架构师，希望加深对微服务架构的理解；

 

3.公司内部技术栈往 Go 迁移，而你需要参与该部分的技术重构；

 

4.渴望成为服务端架构师并为之努力的开发人员。背景介绍

 

随着云原生应用的流行，作为其代表技术的微服务架构，在业内的实践已经逐步走向成熟。国内一线互联网公司都在落地微服务的前沿，或将已有系统拆分为微服务，或用微服务来开发新系统。  package whu.extract.pubtime.core; import java.util.ArrayList;import java.util.Calendar;import java.util.Collections;import java.util.List;import java.util.regex.Matcher;import java.util.regex.Pattern; import whu.utils.TimeUtil; /** * Created On 2014年3月13日 下午2:49:05 * @description 获取网页的发布时间  */public class FetchPubTime {    /** 表示url中连续的8位日期，例如http://www.baIDu.com/20140311/2356.HTML */    private static String url_reg_whole= "([-|/|_]{1}20\d{6})";    /** 表示 用-或者/隔开的日期,有年月日的，例如 http://www.baIDu.com/2014-3-11/2356.HTML  */    private static String url_reg_sep_ymd = "([-|/|_]{1}20\d{2}[-|/|_]{1}\d{1,2}[-|/|_]{1}\d{1,2})";    /** 表示 用-或者/隔开的日期,只有年和月份的，例如 http://www.baIDu.com/2014-3/2356.HTML  */    private static String url_reg_sep_ym = "([-|/|_]{1}20\d{2}[-|/|_]{1}\d{1,2})";    private static Calendar current = Calendar.getInstance();    /** 格式正确的时间正则表达式*/    private static String rightTimeReg = "^((\d{2}(([02468][048])|([13579][26]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|([1-2][0-9])))))|(\d{2}(([02468][1235679])|([13579][01345789]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(\s(((0?[0-9])|([1-2][0-3]))\:([0-5]?[0-9])((\s)|(\:([0-5]?[0-9])))))?$";         /**     * @param url     * @param urlContent     * @return     */    public static String getPubTimeVarIoUs(String url,String urlContent) {                 String pubTime = getPubTimeFromUrl(url);               //链接里面没有，匹配文本中的        if(pubTime == null)        {            if(urlContent!=null&&!urlContent.trim().equals(""))                return extractPageDate(urlContent);        }                 return pubTime;    }         /**从url里面抽取出发布时间，返回YYYY-MM-DD HH:mm:ss格式的字符串     * @param url     * @return     */    public static String getPubTimeFromUrl(String url)    {        Pattern p_whole = Pattern.compile(url_reg_whole);        Matcher m_whole = p_whole.matcher(url);        if(m_whole.find(0)&&m_whole.groupCount()>0)        {           String time =  m_whole.group(0);           time = time.substring(1,time.length());           //每一步都不能够超出当前时间                  if(current.compareto(TimeUtil.strToCalendar(time, "yyyyMMdd"))>=0)        {            return time.substring(0,4)+"-"+time.substring(4,6)+"-"+                  time.substring(6,8)+" "+"00:00:00";        }        }               p_whole = null;        m_whole = null;        Pattern p_sep = Pattern.compile(url_reg_sep_ymd);        Matcher m_sep = p_sep.matcher(url);        if(m_sep.find(0)&&m_sep.groupCount()>0)        {             String time =  m_sep.group(0);             time = time.substring(1,time.length());             String[] seg = time.split("[-|/|_]{1}");             Calendar theTime = Calendar.getInstance();             theTime.set(Calendar.YEAR,Integer.parseInt(seg[0]));             theTime.set(Calendar.MONTH, Integer.parseInt(seg[1]));             theTime.set(Calendar.DAY_OF_MONTH, Integer.parseInt(seg[2]));             if(current.compareto(theTime)>=0)                {                         return seg[0]+"-"+seg[1]+"-"+seg[2]+" "+"00:00:00";                }        }        p_sep = null;        m_sep = null;        Pattern p_sep_ym = Pattern.compile(url_reg_sep_ym);        Matcher m_sep_ym = p_sep_ym.matcher(url);        if(m_sep_ym.find(0)&&m_sep_ym.groupCount()>0)        {             String time =  m_sep_ym.group(0);             time = time.substring(1,time.length());             Calendar theTime = Calendar.getInstance();             String[] seg = time.split("[-|/|_]{1}");             theTime.set(Calendar.YEAR,Integer.parseInt(seg[0]));             theTime.set(Calendar.MONTH, Integer.parseInt(seg[1]));             theTime.set(Calendar.DAY_OF_MONTH, 1);             if(current.compareto(theTime)>=0)            {                          return seg[0]+"-"+seg[1]+"-"+"01"+" "+"00:00:00";            }        }                 return null;    }          /** 从网页源码中取出发布时间     *  java中正则表达式提取字符串中日期实现代码     *  2013年12月19日15:58:42     *  读取出2013-12-19 15:48:33或者2013-12-19或者2012/3/05形式的时间     * @param text 待提取的字符串     * @return 返回日期     * @author: oschina     * @Createtime: Jan 21, 2013     */    public static String extractPageDate(String text) {         boolean  containsHMS =false;        String dateStr = text.replaceAll("r?n", " ");        try {             List matches = null;             Pattern p_detail = Pattern.compile("(20\d{2}[-/]\d{1,2}[-/]\d{1,2} \d{1,2}:\d{1,2}:\d{1,2})|(20\d{2}年\d{1,2}月\d{1,2}日)", Pattern.CASE_INSENSITIVE|Pattern.MulTIliNE);             //如果是仅仅抽取年月日，则按照上面的，如果是抽取年月日-时分秒，则按照下面的            Pattern p = Pattern.compile("(20\d{2}[-/]\d{1,2}[-/]\d{1,2})|(20\d{2}年\d{1,2}月\d{1,2}日)", Pattern.CASE_INSENSITIVE|Pattern.MulTIliNE);            //Matcher matcher = p.matcher(dateStr);            Matcher matcher_detail = p_detail.matcher(dateStr);                         if(!(matcher_detail.find(0) && matcher_detail.groupCount() >= 1))             {                matcher_detail = p.matcher(dateStr);                containsHMS  = true;            }else                matcher_detail = p_detail.matcher(dateStr);            if (matcher_detail.find() && matcher_detail.groupCount() >= 1) {                 matches = new ArrayList();                 for (int i = 1; i <= matcher_detail.groupCount(); i++) {                     String temp = matcher_detail.group(i);                     matches.add(temp);                 }             } else {                 matches = Collections.EMPTY_List;             }                         if (matches.size() > 0) {                 for(int i=0;i<matches.size();i++)                {                    String pubTime = matches.get(i).toString().trim();                    //取出第一个值                    pubTime = pubTime.replace("/", "-").replace("年", "-").replace("月", "-").replace("日", "-");                    if(current.compareto(TimeUtil.strToCalendar(pubTime, "yyyy-MM-dd"))>=0)                    {                        if(containsHMS)                            pubTime+=" "+"00:00:00";                        if(pubTime.matches(rightTimeReg))                        {                            return pubTime;                         }                    }                }            } else {                 return null;             }                      } catch (Exception e) {             return null;         }         return null;    }}

Go 以简明的语法、丰富的内置类型、极高的并发性能，成为落地微服务架构的绝佳利器。目前各大公司都在将服务端技术栈往 Go 迁移，作为一线开发者，掌握 Go 微服务，紧跟服务端开发趋势，能更从容应对业务需求，提高个人职场竞争力。

总结

以上是内存溢出为你收集整理的Go 微服务实战 38 讲全部内容，希望文章能够帮你解决Go 微服务实战 38 讲所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。