关于ajax读取数据表中存放复合json的问题

发布时间：2020-07-06 18:53:46 作者：kangjunfei
来源：网络阅读：575

自己模拟了一点json数据存放在了数据库一个表中大家可以自己模拟

{"1":{"id":"1","name":"asd","type":"1","value":"1L,4L"}}
{"2":{"id":"2","name":"kjf","type":"1","value":"1L,4L"}}
{"3":{"id":"3","name":"sss","type":"1","value":"1L,4L"}}

下面我用的pdo执行的php文件

<?php
$db = 'mysql';
$host ='localhost';
$port  = '3306';
$dbname = 't_shop';
$user = 'root';
$pwd  = '';

$dsn = "$db:host=$host;port=$port;dbname=$dbname";  

 //设定字符集 
$options = array(PDO::MYSQL_ATTR_INIT_COMMAND=>'SET NAMES \'UTF8\''); 

$pdo = new PDO($dsn,$user,$pwd,$options);
$sql="select id,json from ecs_json";
$res=$pdo->query($sql);

$row = $res->fetchAll();
// $row是一个含有json字段键值得二维数组
//打印结果   Array
(
    [0] => Array
        (
            [id] => 1
            [0] => 1
            [json] => {"1":{"id":"1","name":"asd","type":"1","value":"1L,4L"}}
            [1] => {"1":{"id":"1","name":"asd","type":"1","value":"1L,4L"}}
        )

    [1] => Array
        (
            [id] => 2
            [0] => 2
            [json] => {"2":{"id":"2","name":"kjf","type":"1","value":"1L,4L"}}
            [1] => {"2":{"id":"2","name":"kjf","type":"1","value":"1L,4L"}}
        )

    [2] => Array
        (
            [id] => 3
            [0] => 3
            [json] => {"3":{"id":"3","name":"sss","type":"1","value":"1L,4L"}}
            [1] => {"3":{"id":"3","name":"sss","type":"1","value":"1L,4L"}}
        )

)

//定义一个空数组 把二维组里json解析后放进新数组中
$json = array();

foreach ($row as $k=>$v){
    //json新数组中放入我需要的id 和 json 的二维数组键
    $json[$k]['id'] =$v['id'];
    //把键值为json的json串转换成数组 放到新数组中
    $json[$k]['json'] =json_decode($v['json'],true);
   //转换成数组的json串
   //Array
(
    [3] => Array
        (
            [id] => 3
            [name] => sss
            [type] => 1
            [value] => 1L,4L
        )

)
 
}
echo json_encode($json);
exit;

前端ajax接收输出

<script>
      //解析json
          function Object(value){
              return eval("("+value+")");
           }
          
         
          function get_wd(){
          $.get('./json.php',function (data){   
             var data = Object(data)
              for(i in data){
                  var obj = data[i]['json'];
                  var keys = [];
                  var values = [];
                  for(var key in obj){
                     //  console.log(key);
                    // keys.push(key); //定义一个数组用来接受key 
                    // values.push(obj[key]);//取得value  
                     //追加内容定义追加对象的id
                    $('#div1').append('<p>'+obj[key]['name']+'<p>');    
                  }
                  
                } 

          })
           
          }
        </script>

        <title>前端接收json</title>

    </head>
    <body id="userlogin_body">
     <div class="popped_card_con" id="div1">
      <p>姓名</p>
    </div>
         <input type="button" value="点击" onclick="get_wd()"/>            
    </body>

关于ajax读取数据表中存放复合json的问题

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