java - 从 spring MVC Controller 传递 XML 文件

Question

我是 Spring 新手，我需要将 Spring Controller 的 XML 文件传递​​到我的 JavaScript 文件。谁能详细说明我应该如何做到这一点？我已在我的 Controller 上尝试过此操作，但响应正文没有内容。

@Api(value = "XML", description = "")
@RequestMapping("/XML/v1/setting")
public class XMLController{

    @RequestMapping(method = RequestMethod.GET,
         value = "/createFOO",
         produces = "application/xml")
    @ResponseStatus(HttpStatus.CREATED)
    @ResponseBody
    public Document createFOO(){
       DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
       DocumentBuilder builder;
       Document doc1 = null;
       try {
          builder = factory.newDocumentBuilder();
           doc1 = builder.parse(new FileInputStream("largeXmlGraph.xml"));
       } catch (ParserConfigurationException | SAXException | IOException e) {
                e.printStackTrace();
       }
       return doc1;
    }
}

Answer 1

你正在让事情变得复杂。

@RequestMapping(method = RequestMethod.GET,value = "/createFOO",produces = "application/xml")
public void createFOO(OutputStream out){
    try (InputStream is = new FileInputStream("largeXmlGraph.xml")) {
        StreamUtils.copy(is, out);
    } catch (IOException e) {
        e.printStackTrace();
    }
}

类似的东西应该可以工作，您可能想要添加更好的异常处理(例如向客户端发送错误)。