Question

我正在尝试使用以下JSON解码多个文件中的JSON元素

configurationItems":[  
      {  
         "configurationItemVersion":"1.0",
         "configurationItemCaptureTime":"2015-01-12T16:44:03.358Z",
         "configurationStateId":126,
         "relatedEvents":[  ],
         "awsAccountId":"",
         "configurationItemStatus":"ResourceDeleted",
         "resourceId":"i-20faebca",
         "configurationStateMd5Hash":"",
         "resourceType":"AWS::EC2::Instance",
         "tags":{  },
         "relationships":[  ]
      },
      {  
         "configurationItemVersion":"1.0",
         "configurationItemCaptureTime":"2015-01-12T16:33:51.495Z",
         "configurationStateId":1,
         "relatedEvents":[  ],
         "awsAccountId":"",
         "configurationItemStatus":"ResourceDiscovered",
         "resourceId":"",
         "ARN":"arn:aws:ec2:us-east-1:037734006438:instance/i-231a43d8",
         "awsRegion":"us-east-1",
         "availabilityZone":"us-east-1c",
         "configurationStateMd5Hash":"",
         "resourceType":"AWS::EC2::Instance",
         "resourceCreationTime":"2015-01-12T16:29:22.000Z",
         "tags":{  },
         "relationships":[  ],
         "configuration":{  
            "instanceId":"",
            "imageId":"",
            "state":{  
               "code":16,
               "name":"running"
            },

我知道我得到未定义索引错误的原因是因为第一个条目没有配置元素我的问题是如何在我的代码中处理这个？我的PHP脚本如下：

<?php 


$con=mysqli_connect("localhost","root","","json_map");
$response = array(); 
$res=array(); 

$result='' ;
foreach(glob('C:\xampp\htdocs\laravel\awsconfig\app\views\*.json') as $filename) {$json = file_get_contents($filename);


if($json!=null)
{ 
    $decoded=json_decode($json,true); 
    //$decode= var_dump($decoded); 
    //$ss=$decode["array"]; 
    //echo $decoded['number']; 

    if(is_array($decoded["configurationItems"])) 
    { 
    foreach($decoded["configurationItems"] as $configurationItems) 
    //for($i=0;$i>sizeof($decoded["configurationItems"]);$i++) 
     $cfi= $configurationItems["configuration"];
        if(isset($cfi["instanceId"]) && isset($cfi["imageId"])&& isset($cfi["privateDnsName"] //repeat for all elements))
{

    // all defined and echoed as



   $ebsOptimized=$configurationItems["configuration"]["ebsOptimized"]; 
    echo "ebsOptimized:",$ebsOptimized,"<br />";



$result = mysqli_query($con, "INSERT INTO     configuration(instance_id, image_id, private_dns_name, public_dns_name, key_name, state_transition_reason, ami_launch_index, instance_type, launch_time, kernel_id, subnet_id, vpc_id, private_ip_address,architecture, root_device_type, root_device_name, virtualisation_type, client_token, source_dest_check, hypervisor, ebs_optimised)


VALUES('$instanceId','$imageId', '$privateDnsName' , '$publicDnsName', '$keyName', '$stateTransitionReason', '$amiLaunchIndex', '$instanceType', '$launchTime', '$kernelId', '$subnetId', '$vpcId', '$privateIpAddress', '$architecture', '$rootDeviceType', '$rootDeviceName', '$virtualizationType', '$clientToken', '$sourceDestCheck', '$hypervisor', '$ebsOptimized')")or die("Insert Failed ".((is_object($con)) ? mysqli_error($con) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)));; 

    }// check if row inserted or not 
    if ($result) { 
        // successfully inserted into database 
        $response["code"] = 1; 
        $response["message"] = "successfully updated config table "; 

        // echoing JSON response 
        echo json_encode($response); 
    } else { 
        // failed to insert row 
        $response["code"] = 2; 
        $response["message"] = "Oops! An error occurred."; 

        // echoing JSON response 
        echo json_encode($response); 
    } 

    } 
    } 

}

?>

Answer 1

您的代码太长，您可以像这样查看索引

php

  if(isset($array['yourindex'])){
     //do your stuff 
    }

Javascript

if (typeof yourJsonObject.yourIndex != 'undefined') {
 // do your stuff 
}

未定义的索引配置多个文件中的JSON元素

1 个答案: