php - 如何将 JSON 请求中的过滤器参数发送到 HBase REST API？

Question

我正在尝试开发一个 PHP 客户端来与 HBase REST API 交互。但是我找不到使用 JSON 请求创建扫描仪的方法。我能找到的所有示例都使用 XML 格式。只是想知道是否可以使用 JSON 格式发送。

下面的代码返回错误信息: “HTTP/1.1 500 无法从 START_ARRAY token 中反序列化 java.lang.String 的实例”

<?php

$headers = array(
    'Accept: application/json',
    'Content-Type: application/json',
);

if (!file_exists(__DIR__ . '/tmp')) {
    mkdir(__DIR__ . '/tmp', 0777);
}

$scannerFile = __DIR__ . '/tmp/scanner';

if (!file_exists($scannerFile)) {
    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, "http://hbase_uri:20550/news/scanner");
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_GSSNEGOTIATE);
    curl_setopt($ch, CURLOPT_USERPWD, ":");

    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode(array(
        'batch' => 10,
        'filter' => array(
            array(
                'type' => 'PrefixFilter',
                'value' => 'u123',
            ),
        ),
    )));

    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_VERBOSE, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    $page = curl_exec($ch);

    file_put_contents($scannerFile, $page);

    curl_close($ch);
} else {
    $s = file_get_contents($scannerFile);
    $parts = explode('Location: http://hbase_uri:20550/news/scanner/', $s);
    $parts = explode("\n", $parts[1]);
    $parts[0] = trim($parts[0]);
    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, "http://hbase_uri:20550/news/scanner/" . $parts[0]);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_GSSNEGOTIATE);
    curl_setopt($ch, CURLOPT_USERPWD, ":");

    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_VERBOSE, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    $page = curl_exec($ch);

    file_put_contents(__DIR__ . '/tmp/result', $page);

    curl_close($ch);


    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, "http://hbase_uri:20550/news/scanner/" . $parts[0]);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_GSSNEGOTIATE);
    curl_setopt($ch, CURLOPT_USERPWD, ":");

    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');

    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_VERBOSE, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    $page = curl_exec($ch);

    file_put_contents(__DIR__ . '/tmp/result_delete', $page);

    curl_close($ch);
}

Answer 1

我通过别人的提示得到了答案:

<?php

$headers = array(
    'Accept: application/json',
    'Content-Type: application/json',
);

if (!file_exists(__DIR__ . '/tmp')) {
    mkdir(__DIR__ . '/tmp', 0777);
}

$scannerFile = __DIR__ . '/tmp/scanner';

if (!file_exists($scannerFile)) {
    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, "http://hbase_uri:20550/news/scanner");
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_GSSNEGOTIATE);
    curl_setopt($ch, CURLOPT_USERPWD, ":");

    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode(array(
        'batch' => 10,
        'filter' => json_encode(array(
            'type' => 'PrefixFilter',
            'value' => 'u123',
        )),
    )));

    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_VERBOSE, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    $page = curl_exec($ch);

    file_put_contents($scannerFile, $page);

    curl_close($ch);
} else {
    $s = file_get_contents($scannerFile);
    $parts = explode('Location: http://hbase_uri:20550/news/scanner/', $s);
    $parts = explode("\n", $parts[1]);
    $parts[0] = trim($parts[0]);
    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, "http://hbase_uri:20550/news/scanner/" . $parts[0]);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_GSSNEGOTIATE);
    curl_setopt($ch, CURLOPT_USERPWD, ":");

    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_VERBOSE, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    $page = curl_exec($ch);

    file_put_contents(__DIR__ . '/tmp/result', $page);

    curl_close($ch);


    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, "http://hbase_uri:20550/news/scanner/" . $parts[0]);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_GSSNEGOTIATE);
    curl_setopt($ch, CURLOPT_USERPWD, ":");

    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');

    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_VERBOSE, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    $page = curl_exec($ch);

    file_put_contents(__DIR__ . '/tmp/result_delete', $page);

    curl_close($ch);
}