Play Framework：将服务器的响应解析为 Xml returns 空文档

Question

我有一个向服务器发出 HTTP 请求的 Play 网络应用程序。

请求进展顺利：我收到状态代码为 200 且 Content-type = "application/xml" 的响应。

如果我将响应主体打印到标准输出，我会看到一个格式正确的 Xml 文档。

但是，如果我尝试从响应中创建一个 org.w3c.dom.XML 文档使用 WSResponse.asXml()，方法 returns 一个空文档。

这些是我的代码的相关部分：

private WSResponse sendPostRequest(String url, String body) {

    WSRequest request = WS.url(url);

    request.setHeader("Content-type", "application/x-www-form-urlencoded");

    return request.post(body).get(5000L);
}

并且：

public Result requestDefaultImport() {

    String url = "some_url";
    String body = "some_body";

    WSResponse response = sendPostRequest(url, body);

    System.out.println(response.getBody()); //prints well-formed Xml

    Document xmld = response.asXml(); 
    System.out.println(xmld); //prints: #[null document]


    return ok();
}

我做错了什么？

Answer 1

据我所知，您正在

处打印一个字符串

System.out.println(response.getBody());

但是，您正在打印 org.w3c.dom.Document at

 System.out.println(xmld);

可以在

找到将 Document 转换为字符串的解决方案

How do I convert a org.w3c.dom.Document object to a String?

Answer 2

试试这个代码：

Document doc = request().body().asXml();
Source source = new DOMSource(doc);
StringWriter stringWriter = new StringWriter();
StreamResult result = new StreamResult(stringWriter);
TransformerFactory factory = TransformerFactory.newInstance();
javax.xml.transform.Transformer transformer = factory.newTransformer();
transformer.transform(source, result);
String xmlStr = stringWriter.getBuffer().toString();
System.out.println(xmlStr);

或者如果从 SOAP 消费的话：

Document doc = soapBody.extractContentAsDocument();
Source source = new DOMSource(doc);
StringWriter stringWriter = new StringWriter();
Result result = new StreamResult(stringWriter);
TransformerFactory factory = TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer();
transformer.transform(source, result);
strSoapBody = stringWriter.getBuffer().toString();

Play Framework：将服务器的响应解析为 Xml returns 空文档

Play Framework: parsing the server's response as Xml returns null document

java

xml

playframework-2.0