java - 使用 Spring MVC 显示 XML 字符串

Question

我正在尝试向浏览器呈现 XML 文档，但出现黑屏。但是，当我查看页面源代码时，我可以看到 XML。

@RequestMapping(value = "view-xml", method = {RequestMethod.GET})
public ResponseEntity<String> viewXmlPayload(@RequestParam ("id") int taskId){

    payload = dao.getXmlPayload(taskId);

    HttpHeaders responseHeaders = new HttpHeaders();
    responseHeaders.setContentType(MediaType.TEXT_XML);
    return new ResponseEntity<String>(payload, responseHeaders, HttpStatus.OK);
}

使用一些浏览器工具，我可以看到内容类型已正确设置为“text/xml”，但我仍然在页面上看不到任何内容。

Answer 1

来自RFC 3023

If an XML document -- that is, the unprocessed, source XML document -- is readable by
casual users, text/xml is preferable to application/xml. MIME user agents (and web user
agents) that do not have explicit support for text/xml will treat it as text/plain, for 
example, by displaying the XML MIME entity as plain text. Application/xml is preferable when the XML MIME entity is unreadable by casual users.

这可能不是您的代码问题，某些浏览器根本不呈现 XML。您需要使用 application/xml 而不是 text/xml

为什么要尝试将 XML 文档渲染到浏览器，如果仍想渲染，请使用 XSLT 将 XML 转换为 HTML.