Question

How to write ResponseEntity to HttpServletResponse (as it makes @ResponseBody)?

For example I have authentication success handler:

@Override
public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
    Map responseMap = new HashMap();
    responseMap.put("user", "my_user_name");
    ResponseEntity responseEntity = new ResponseEntity(response, HttpStatus.OK);
}

If use MappingJackson2HttpMessageConverter I have error: "Could not write content: not in non blocking mode."

Code:

HttpOutputMessage outputMessage = new ServletServerHttpResponse(response);
messageConverter.write(responseEntity, null, outputMessage);

What are the best practices of implementation handlers with HttpServletResponse?

Answer 1

基于andrearro88's answer，我做了这个通用功能，可以将ResponseEntity复制到HttpServletResponse：

public static void populateResponse(ResponseEntity<String> responseEntity, HttpServletResponse servletResponse)
        throws IOException {
    for (Map.Entry<String, List<String>> header : responseEntity.getHeaders().entrySet()) {
        String chave = header.getKey();
        for (String valor : header.getValue()) {
            servletResponse.addHeader(chave, valor);                
        }
    }

    servletResponse.setStatus(responseEntity.getStatusCodeValue());
    servletResponse.getWriter().write(responseEntity.getBody());
}

How to write ResponseEntity to HttpServletResponse?

1 个答案: