如果您检查Wordpress导入器插件，则很容易实现此功能。但是如果你想要直接的答案，就在这里

首先，我们需要将Wordpress导入器插件文件复制到主题目录。像这样

    1. themes/bootstrapguru_theme/inc/wordpress-importer.php
    2. themes/bootstrapguru_theme/inc/parser.php

您可以在此处找到此插件wordpress importer

完成此步骤后，我们将创建3个新文件

File 1 : bootstrapguru-import.php将以下代码粘贴到该文件中

class bootstrapguru_import extends WP_Import
{
    function check()
    {
    //you can add any extra custom functions after the importing of demo coment is done
    }
}

add_action( \'wp_ajax_my_action\', \'my_action_callback\' );
function my_action_callback() 
{
    global $wpdb; 

    if ( !defined(\'WP_LOAD_IMPORTERS\') ) define(\'WP_LOAD_IMPORTERS\', true);

    // Load Importer API
    require_once ABSPATH . \'wp-admin/includes/import.php\';

    if ( ! class_exists( \'WP_Importer\' ) ) {
        $class_wp_importer = ABSPATH . \'wp-admin/includes/class-wp-importer.php\';
        if ( file_exists( $class_wp_importer ) )
        {
            require $class_wp_importer;
        }
    }

    if ( ! class_exists( \'WP_Import\' ) ) {
        $class_wp_importer = get_template_directory() ."/inc/wordpress-importer.php";
        if ( file_exists( $class_wp_importer ) )
            require $class_wp_importer;
    }


    if ( class_exists( \'WP_Import\' ) ) 
    { 
        $import_filepath = get_template_directory() ."/tmp/demo.xml" ; // Get the xml file from directory 

        include_once(\'bootstrapguru-import.php\');

        $wp_import = new bootstrapguru_import();
        $wp_import->fetch_attachments = true;
        $wp_import->import($import_filepath);

        $wp_import->check();

    }
        die(); // this is required to return a proper result
}

(function($) {
    "use strict";
        $(\'.bootstrapguru_import\').click(function(){
            $import_true = confirm(\'are you sure to import dummy content ? it will overwrite the existing data\');
            if($import_true == false) return;

            $(\'.import_message\').html(\' Data is being imported please be patient, while the awesomeness is being created :)  \');
        var data = {
            \'action\': \'my_action\'       
        };

       // since 2.8 ajaxurl is always defined in the admin header and points to admin-ajax.php
        $.post(ajaxurl, data, function(response) {
            $(\'.import_message\').html(\'<div class="import_message_success">\'+ response +\'</div>\');
            //alert(\'Got this from the server: \' + response); <i class="fa fa-spinner fa-3x fa-spin"></i>
        });
    });
})(jQuery);

我们即将完成练习；）让我们告诉wordpress，通过在functions.php

include_once( \'inc/bootstrapguru-importer.php\' );

如果你发现我的帖子有任何问题，请告诉我，我可能会错过一些东西。我花了6个小时才完成

试图发表评论，但我的声誉还不够。由于没有排队，AJAX部分无法工作。js文件。添加下面的代码，它就能完美地工作。

function admin_import_scripts() {

    wp_register_script( \'bootstrapguru-import\', get_template_directory_uri() . \'/demo-importer/bootstrapguru-import.js\', false, \'1.0.0\' );
    wp_enqueue_script( \'bootstrapguru-import\' );
}
add_action( \'admin_enqueue_scripts\', \'admin_import_scripts\' );