restTemplate 转发

 

private String server = "localhost";
private int port = 8080;

@RequestMapping("/**")
@ResponseBody
public String mirrorRest(@RequestBody String body, HttpMethod method, HttpServletRequest request) throws URISyntaxException
{
    URI uri = new URI("http", null, server, port, request.getRequestURI(), request.getQueryString(), null);

    ResponseEntity<String> responseEntity =
        restTemplate.exchange(uri, method, new HttpEntity<String>(body), String.class);

    return responseEntity.getBody();
}

@RequestMapping("/**")
public ResponseEntity mirrorRest(@RequestBody(required = false) String body, 
    HttpMethod method, HttpServletRequest request, HttpServletResponse response) 
    throws URISyntaxException {
    String requestUrl = request.getRequestURI();

    URI uri = new URI("http", null, server, port, null, null, null);
    uri = UriComponentsBuilder.fromUri(uri)
                              .path(requestUrl)
                              .query(request.getQueryString())
                              .build(true).toUri();

    HttpHeaders headers = new HttpHeaders();
    Enumeration<String> headerNames = request.getHeaderNames();
    while (headerNames.hasMoreElements()) {
        String headerName = headerNames.nextElement();
        headers.set(headerName, request.getHeader(headerName));
    }

    HttpEntity<String> httpEntity = new HttpEntity<>(body, headers);
    RestTemplate restTemplate = new RestTemplate();
    try {
        return restTemplate.exchange(uri, method, httpEntity, String.class);
    } catch(HttpStatusCodeException e) {
        return ResponseEntity.status(e.getRawStatusCode())
                             .headers(e.getResponseHeaders())
                             .body(e.getResponseBodyAsString());
    }
}