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优化客户端调用服务端接口减少请求数据容量

jacklove
jackloveasal
2018-06-09 09:09:521480semak imbas

因项目需要，需要记录用户未来3天的预约时间，每个预约时段为1小时。

例如：00:00:00～00:59:59 或 01:00:00～01:59:59 等为一个预约时段

前端代码如下：

a266f3dca0d5a4549e68239d2de8a2f4
100db36a723c770d327fc0aef2ce13b1
 93f0f5c25f18dab9d176bd4f6de5d30e
  976640ee24046f5172078150a9b0e182
  b2386ffb911b14667cb8f0f91ea547a7 提交预约日期 6e916e0f7d1e588d4f442bf645aedb2f
  46d5fe1c7617e3914f214aaf043f4ccf
  .title{color:#FF0000;}
  .topic{font-size:18px; font-weight:bold;}
  531ac245ce3e4fe3d50054a55f265927
  3a92cd40c5e41a3ac5d2ee1eb22aa1532cacc6d41bbb37262a98f745aa00fbf0
  8019067d09615e43c7904885b5246f0a    function fsubmit(){
        var timetable = [];
        $("#myform input[type=checkbox]").each(function(){            if(this.checked){
                timetable.push($(this).val());
            }
        });        if(timetable.length==0){
            alert('请选择预约时间');
            return false;
        }
        $.post("http://localhost/server.php",{timetable:timetable}).done(function(data){            if(data['success']==true){
                alert('提交成功');                
            }else{
                alert('提交失败');
            }
        });
    }
  2cacc6d41bbb37262a98f745aa00fbf0
 9c3bca370b5104690d9ef395f2c5f8d1
 6c04bd5ca3fcae76e30b72ad730ca86d
  e7bb7f0263beba4db011e5ec074b43d1请选择预约时间：94b3e26ee717c64999d7867364b1b4a3
  2d1b69156f5a9ca58570ee830f726667
    76541fb5e7b0d5abaf17f6416b10757b2015-05-28:94b3e26ee717c64999d7867364b1b4a3
    e388a4556c0f65e1904146cc1a846bee
      8fa66797aee1213ccb693ccebd136638 00:00
      957471379fdc4653b90befb99903bce8 01:00
      25007a6b23e0c063c46466727231c9bc 02:00
      ceb0723432d34885f2425ae5ea1db4c5 03:00
      928b8eec99dcf74addb693e770bd7fc1 04:00
      a3ec66e3393ce68f86dcd97e2a88a291 05:00
      5df53cdd9f73bf7eec8c872a3889f1a8 06:00
      6701ac09d3e3fe5a2ec315ca1895462f 07:00
      1b71c9b48fc210d1834ba7915c78a4c6 08:00
      b848fe1f341e89a8fd1bbf1e1da1dd62 09:00
      a3f4031ea5e462d098f3183d65c46b0c 10:00
      9d43dc9b799497740ea8e9c460f017d3 11:00
    94b3e26ee717c64999d7867364b1b4a3
    e388a4556c0f65e1904146cc1a846bee
      b4642e3df3d3375c687c3557a1cd101c 12:00
      907a48b184dce1b81b98e3cfc2f31c6d 13:00
      d7c924496009e62a0d94168af0f54963 14:00
      adeb17f67cac5d431cc120b5ccb8a252 15:00
      a01dbefc065d5eda5ed04c1f4fb5e628 16:00
      af36f3a77c189110b0e779bf1830c78e 17:00
      154e08165a574b7dfc78267c89f1f99d 18:00
      103ad11eeebeb19adaa75226c006e069 19:00
      ef0f940fb824b586261b48f183c1a57d 20:00
      b1559e3e2ee701fce5b30c1e502e6527 21:00
      bf37461752a3345f6cccb237ae3f69b4 22:00
      e831aea7d3c307af7c9a1916aeb7681d 23:00
    94b3e26ee717c64999d7867364b1b4a3
    76541fb5e7b0d5abaf17f6416b10757b2015-05-29:94b3e26ee717c64999d7867364b1b4a3
    e388a4556c0f65e1904146cc1a846bee
      ed1f0761f67a5459c33bf6c5bf19400a 00:00
      8a8f03024cbf08044ff6e108126be4cb 01:00
      ede74f631c8e636509b9f78b7c80b318 02:00
      40288f3951f758a1a30bcbc9f4cb6ad1 03:00
      f82b59880d7101ac7db9b6ff8fa90156 04:00
      766e8d988af6729a3065a977026f5568 05:00
      c2535971b140e3ef15e80e10cf158c00 06:00
      67b89c04ec7b123dbbe46705f34afeec 07:00
      eac44abc06f0f87fc423c94df27d6520 08:00
      b41596713b03c1fd0f6ace424af366e2 09:00
      b5ad5e8d4e98e2b1cdcfec82f236b41e 10:00
      042d15c5fef8d6db5218225cf8d423d6 11:00
    94b3e26ee717c64999d7867364b1b4a3
    e388a4556c0f65e1904146cc1a846bee
      5bfd9ce9ab972b1da2da8c300c62fd95 12:00
      9733e53952fb1fe29631043a657cc947 13:00
      17c0bdcdfba59ed01c707427d002f2bf 14:00
      c523ceccdb79632b16679bd7aee94418 15:00
      cf9db79030d2e6c452bf7e3fc7b9e9d6 16:00
      c07699b0700fd092a8bd1687e3e7f30d 17:00
      50e6e9e8d6ff62a09c4522c16712b5ff 18:00
      f55ff3156749eea453c012e9b8b5bce8 19:00
      cf80621208008c5c01c60a9c1af4a12d 20:00
      74febcb69a7fb8f913b3fffe965115dc 21:00
      bcb2e0914725b1c671f997cabfc91f0c 22:00
      2852f55488b75f4faf6a812cc54e51e8 23:00
    94b3e26ee717c64999d7867364b1b4a3
    76541fb5e7b0d5abaf17f6416b10757b2015-05-30:94b3e26ee717c64999d7867364b1b4a3
    e388a4556c0f65e1904146cc1a846bee
      703b89ba9529cc2bd239eea0627672d4 00:00
      c60e21f504863351df7beb2c82c02b69 01:00
      c1063a577011bf856c7cfb6974be13c0 02:00
      15e9aab020bf10c9bf34866bd1bab3c5 03:00
      59c30949eee3e2c31a98b2df50b1a88b 04:00
      54878f9ee7fc3050e764e57626be4b75 05:00
      897a36f283a4e8ce916af5deb738236f 06:00
      1a8341eb7095c662c750310cfc8abd09 07:00
      b27afbf8a974f0bcf9af6f5993e35040 08:00
      e9ce35dc78846f33a22772342f8e6109 09:00
      45b5f5ea1319f174454664cd9dad25cc 10:00
      d5b78febe485ae147a92f3df83227c4a 11:00
    94b3e26ee717c64999d7867364b1b4a3
    e388a4556c0f65e1904146cc1a846bee
      8a51bd8e72fe3368d1dc9105daf2c17e 12:00
      045c85f3629b14bed91861476d9aa295 13:00
      30a9a59e753d7cacfb6e3223e55b1313 14:00
      e60aeac5c388c7bf1a6bb7c5f3a98471 15:00
      277d18aa763285c19ae16e18e65522e7 16:00
      62dff192b67f71432ffb7c31d88a35d0 17:00
      5cc0060e312e87bfb362ac9b9adc3ffb 18:00
      ef43e57899138b338a043e9740f57952 19:00
      9f714929aa7bfd4cb807d125e07e5600 20:00
      b6cf2c027f5861facc96f5d3667c893a 21:00
      e5534f6e88e54bf28eac0eb9bb563395 22:00
      a05ec6845002035981477904f5c9f03a 23:00
    94b3e26ee717c64999d7867364b1b4a3
    e388a4556c0f65e1904146cc1a846bee8d20a0f8cf5bd9e3ffeb76c67aa30e5694b3e26ee717c64999d7867364b1b4a3
  f5a47148e367a6035fd7a2faa965022e
 36cc49f0c466276486e50c850b7e4956
73a6ac4ed44ffec12cee46588e518a5e

后端代码如下：

a421a4f6a4db8927d31a0b2becca72cctrue));?>


例如要提交某个用户的3天预约数据，所有时段都预约（全选）
后端收到的请求数据如下：

["2015-05-28 00:00:00","2015-05-28 01:00:00","2015-05-28 02:00:00","2015-05-28 03:00:00","2015-05-28 04:00:00","2015-05-28 05:00:00","2015-05-28 06:00:00","2015-05-28 07:00:00","2015-05-28 08:00:00","2015-05-28 09:00:00","2015-05-28 10:00:00","2015-05-28 11:00:00","2015-05-28 12:00:00","2015-05-28 13:00:00","2015-05-28 14:00:00","2015-05-28 15:00:00","2015-05-28 16:00:00","2015-05-28 17:00:00","2015-05-28 18:00:00","2015-05-28 19:00:00","2015-05-28 20:00:00","2015-05-28 21:00:00","2015-05-28 22:00:00","2015-05-28 23:00:00","2015-05-29 00:00:00","2015-05-29 01:00:00","2015-05-29 02:00:00","2015-05-29 03:00:00","2015-05-29 04:00:00","2015-05-29 05:00:00","2015-05-29 06:00:00","2015-05-29 07:00:00","2015-05-29 08:00:00","2015-05-29 09:00:00","2015-05-29 10:00:00","2015-05-29 11:00:00","2015-05-29 12:00:00","2015-05-29 13:00:00","2015-05-29 14:00:00","2015-05-29 15:00:00","2015-05-29 16:00:00","2015-05-29 17:00:00","2015-05-29 18:00:00","2015-05-29 19:00:00","2015-05-29 20:00:00","2015-05-29 21:00:00","2015-05-29 22:00:00","2015-05-29 23:00:00","2015-05-30 00:00:00","2015-05-30 01:00:00","2015-05-30 02:00:00","2015-05-30 03:00:00","2015-05-30 04:00:00","2015-05-30 05:00:00","2015-05-30 06:00:00","2015-05-30 07:00:00","2015-05-30 08:00:00","2015-05-30 09:00:00","2015-05-30 10:00:00","2015-05-30 11:00:00","2015-05-30 12:00:00","2015-05-30 13:00:00","2015-05-30 14:00:00","2015-05-30 15:00:00","2015-05-30 16:00:00","2015-05-30 17:00:00","2015-05-30 18:00:00","2015-05-30 19:00:00","2015-05-30 20:00:00","2015-05-30 21:00:00","2015-05-30 22:00:00","2015-05-30 23:00:00"]

这里写图片描述

请求数据content-length:2879

使用这种方式请求数据容量比较大，影响响应时间。

改进方法1:把DateTime格式时间转为时间戳再提交

前端代码修改如下：修改javascript fsubmit方法

  <script type="text/javascript">
    function fsubmit(){
        var timetable = [];
        $("#myform input[type=checkbox]").each(function(){
            if(this.checked){                // 把时间转为时间戳
                var time = $(this).val();                var timestamp = Date.parse(new Date(time));
                timestamp = timestamp / 1000;

                timetable.push(timestamp);
            }
        });        if(timetable.length==0){
            alert(&#39;请选择预约时间&#39;);            return false;
        }

        $.post("http://localhost/server.php",{timetable:timetable}).done(function(data){
            if(data[&#39;success&#39;]==true){
                alert(&#39;提交成功&#39;);                
            }else{
                alert(&#39;提交失败&#39;);
            }
        });

    }  </script>

后端收到的请求数据如下：

["1432742400","1432746000","1432749600","1432753200","1432756800","1432760400","1432764000","1432767600","1432771200","1432774800","1432778400","1432782000","1432785600","1432789200","1432792800","1432796400","1432800000","1432803600","1432807200","1432810800","1432814400","1432818000","1432821600","1432825200","1432828800","1432832400","1432836000","1432839600","1432843200","1432846800","1432850400","1432854000","1432857600","1432861200","1432864800","1432868400","1432872000","1432879200","1432882800","1432886400","1432890000","1432893600","1432897200","1432900800","1432904400","1432908000","1432911600","1432915200","1432918800","1432922400","1432926000","1432929600","1432933200","1432936800","1432940400","1432944000","1432947600","1432951200","1432954800","1432958400","1432962000","1432965600","1432969200","1432972800","1432976400","1432980000","1432983600","1432987200","1432990800","1432994400","1432998000"]

这里写图片描述

请求数据content-length:1916

后端收到后可把时间戳转为datetime格式使用

改进方法2:使用一个32位的整型变量，把每一小时作为32位整型的其中一位来存储

时段与32位整型的对应关系是
从右至左开始是00:00,01:00,02:00,03:00 以此类推，如果有选择的时段则为1，否则为0

例如：需要预约2016-05-28的 10:00,12:00,14:00,16:00,18:00

 0   0    0   0   0   0   0    0   0  0  0  0  0  1  0  1  0  1  0  1  0  1  0  0  0  0  0  0  0  0  0  0
忽略 忽略 忽略 忽略 忽略 忽略 忽略 忽略 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

则用32位二进制表示为 1010101010000000000 即10进制349184 ＝ 2的10次方 + 2的12次方 + 2的14次方 + 2的16次方 + 2的18次方
前端代码修改如下：修改javascript fsubmit方法

  <script type="text/javascript">
    function fsubmit(){
        var timetable = [];        var tmp = {};
        $("#myform input[type=checkbox]").each(function(){
            if(this.checked){                // 拆分日期与时间
                var datetime = $(this).val();                var datetime = datetime.split(&#39; &#39;);                var day = datetime[0];                var time = parseInt(datetime[1].substring(0,2));                // 创建日期与时间数组
                if(typeof(tmp[day])==&#39;undefined&#39;){
                    tmp[day] = [];
                }
                tmp[day].push(time);
            }
        });        // 合拼数据，转换格式
        for(day in tmp){            // 根据数据集合，合拼，创建10进制数据
            var time = tmp[day];            var timeint = 0;            for(var i=0; i<time.length; i++){
                timeint += Math.pow(2,time[i]);
            }

            timetable.push(day+&#39; &#39;+timeint);
        }        if(timetable.length==0){
            alert(&#39;请选择预约时间&#39;);            return false;
        }

        $.post("http://localhost/server.php",{timetable:timetable}).done(function(data){
            if(data[&#39;success&#39;]==true){
                alert(&#39;提交成功&#39;);
            }else{
                alert(&#39;提交失败&#39;);
            }
        });

    }  </script>

后端收到的请求数据如下：

["2015-05-28 16777215","2015-05-29 16777215","2015-05-30 16777215"]

这里写图片描述

请求数据content-length:107

使用这种方法，一天不管选了多少个预约时段，都只会有一条记录，大量减少提交的数据大小。
后端把10进制转换为时间的方法：
1.把10进制转为2进制，并反转
2.循环判断每一位，记录值为1的
3.记录保存
代码如下：

<?php$datetime = &#39;2015-05-28 1398016&#39;;list($day, $time) = explode(&#39; &#39;, $datetime);$bintime = decbin($time);$bintime = strrev($bintime);$result = array();for($i=0,$len=strlen($bintime); $i<$len; $i++){    if(substr($bintime, $i, 1)==1){        $result[] = $day.&#39; &#39;.str_pad($i, 2, &#39;0&#39;, STR_PAD_LEFT).&#39;:00:00&#39;;
    }
}
print_r($result);?>

输出：

Array(
    [0] => 2015-05-28 08:00:00
    [1] => 2015-05-28 10:00:00
    [2] => 2015-05-28 12:00:00
    [3] => 2015-05-28 14:00:00
    [4] => 2015-05-28 16:00:00
    [5] => 2015-05-28 18:00:00
    [6] => 2015-05-28 20:00:00)

总结：本文提供一种可以把大量数据转换为小容量数据传输的方法，但需要加入更多的运算。因此实际开发中需根据实际需求来判断是否适合用时间换空间，或空间换时间的算法。

本篇文章讲解了优化客户端调用服务端接口减少请求数据容量，更多相关内容请关注php中文网。

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