PHP Guzzle请求中带命名空间的XML响应数据解析教程

<?php

require 'vendor/autoload.php'; // 引入Guzzle的Composer自动加载文件

use GuzzleHttp\Client;

$api_url = 'http://example.com/test.asmx/GetUserDetails?userID=123'; // 示例API URL
$client = new Client();

try {
    $response = $client->request('GET', $api_url);
    $xmlString = $response->getBody()->getContents();
    // 打印原始XML字符串，以便检查其结构
    echo "原始XML响应：\n" . $xmlString . "\n\n";
} catch (GuzzleHttp\Exception\RequestException $e) {
    echo "请求失败: " . $e->getMessage() . "\n";
    if ($e->hasResponse()) {
        echo "响应内容: " . $e->getResponse()->getBody()->getContents() . "\n";
    }
    exit;
}

?>

<?xml version="1.0" encoding="utf-8"?>
<DataSet xmlns="http://example.com">
  <xs:schema id="NewDataSet" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" xmlns:msprop="urn:schemas-microsoft-com:xml-msprop">
    <xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:UseCurrentLocale="true">
      <xs:complexType>
        <xs:choice minOccurs="0" maxOccurs="unbounded">
          <xs:element name="Table">
            <xs:complexType>
              <xs:sequence>
                <xs:element name="ID" type="xs:string" minOccurs="0" />
                <xs:element name="NAME" type="xs:string" minOccurs="0" />
              </xs:sequence>
            </xs:complexType>
          </xs:element>
        </xs:choice>
      </xs:complexType>
    </xs:element>
  </xs:schema>
  <diffgr:diffgram xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" xmlns:diffgr="urn:schemas-microsoft-com:xml-diffgram-v1">
    <NewDataSet xmlns="">
      <Table diffgr:id="Table1" msdata:rowOrder="0">
        <ID>123</ID>
        <NAME>EXAMPLE</NAME>
      </Table>
    </NewDataSet>
  </diffgr:diffgram>
</DataSet>

<?php

// 假设 $xmlString 变量已包含上述XML响应
// $xmlString = '<?xml version="1.0" encoding="utf-8"?><DataSet xmlns="http://example.com"><xs:schema id="NewDataSet" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" xmlns:msprop="urn:schemas-microsoft-com:xml-msprop"><xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:UseCurrentLocale="true"><xs:complexType><xs:choice minOccurs="0" maxOccurs="unbounded"><xs:element name="Table"><xs:complexType><xs:sequence><xs:element name="ID" type="xs:string" minOccurs="0" /><xs:element name="NAME" type="xs:string" minOccurs="0" /></sequence></xs:complexType></xs:element></xs:choice></xs:complexType></xs:element></xs:schema><diffgr:diffgram xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" xmlns:diffgr="urn:schemas-microsoft-com:xml-diffgram-v1"><NewDataSet xmlns=""><Table diffgr:id="Table1" msdata:rowOrder="0"><ID>123</ID><NAME>EXAMPLE</NAME></Table></NewDataSet></diffgr:diffgram></DataSet>';

try {
    // 1. 将XML字符串加载为SimpleXMLElement对象
    $xmlObject = new SimpleXMLElement($xmlString);

    // 2. 查找具有特定命名空间（diffgr）的子元素
    // 'diffgr' 是命名空间前缀，true 表示返回所有具有该命名空间的子元素
    // 在此XML中，<diffgr:diffgram> 是我们目标数据所在的父元素
    $diffgrChildren = $xmlObject->children('diffgr', true);

    // 3. 进一步获取 <diffgr:diffgram> 内部的子元素
    // <diffgr:diffgram> 内部的 <NewDataSet> 及其子元素没有明确的前缀命名空间，
    // 因此我们再次调用 children() 但不指定命名空间参数
    $internalChildren = $diffgrChildren->children();

    // 4. 访问具体的数据元素
    // 现在我们可以像访问普通对象属性一样访问 <NewDataSet> 和 <Table>
    $id = (string) $internalChildren->NewDataSet->Table->ID;
    $name = (string) $internalChildren->NewDataSet->Table->NAME;

    echo "从XML中提取的数据：\n";
    echo "ID: " . $id . "\n";
    echo "NAME: " . $name . "\n";

} catch (Exception $e) {
    echo "XML解析失败: " . $e->getMessage() . "\n";
}

?>