spring mvc 休息服务重定向/转发/代理 [英] spring mvc rest service redirect / forward / proxy

问题描述

我已经使用 spring mvc 框架构建了一个 Web 应用程序来发布 REST 服务.例如:

I have build a web application using spring mvc framework to publish REST services. For example:

@Controller
@RequestMapping("/movie")
public class MovieController {

@RequestMapping(value = "/{id}", method = RequestMethod.GET)
public @ResponseBody Movie getMovie(@PathVariable String id, @RequestBody user) {

    return dataProvider.getMovieById(user,id);

}

现在我需要部署我的应用程序，但我遇到了以下问题:客户端无法直接访问应用程序所在的计算机(有防火墙).因此，我需要在调用实际休息服务的代理机器(可由客户端访问)上有一个重定向层.

Now I need to deploy my application but I have the following problem: The clients do not have direct access to the computer on which the application resides (There is a firewall). Therefore I need a redirection layer on a proxy machine (accessible by the clients) which calls the actual rest service.

我尝试使用 RestTemplate 进行新调用:例如:

I tried making a new call using RestTemplate: For Example:

@Controller
@RequestMapping("/movieProxy")
public class MovieProxyController {

    private String address= "http://xxx.xxx.xxx.xxx:xx/MyApp";

    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
    public @ResponseBody Movie getMovie(@PathVariable String id,@RequestBody user,final HttpServletResponse response,final HttpServletRequest request) {

        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        RestTemplate restTemplate = new RestTemplate();
        return restTemplate.exchange( address+ request.getPathInfo(), request.getMethod(), new HttpEntity<T>(user, headers), Movie.class);

}

这没问题，但我需要重写控制器中的每个方法才能使用resttemplate.此外，这会导致代理机器上的冗余序列化/反序列化.

This is ok but I need to rewrite each method in the controller to use the resttemplate. Also, this causes redundant serialization/deserialization on the proxy machine.

我尝试使用 restemplate 编写通用函数，但没有成功:

I tried writing a generic function using restemplate, but it did not work out:

@Controller
@RequestMapping("/movieProxy")
public class MovieProxyController {

    private String address= "http://xxx.xxx.xxx.xxx:xx/MyApp";

    @RequestMapping(value = "/**")
    public ? redirect(final HttpServletResponse response,final HttpServletRequest request) {        
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        RestTemplate restTemplate = new RestTemplate();
        return restTemplate.exchange( address+ request.getPathInfo(), request.getMethod(), ? , ?);

}

我找不到可以处理请求和响应对象的 resttemplate 方法.

I could not find a method of resttemplate which works with request and response objects.

我也尝试过 spring 重定向和转发.但是重定向不会改变请求的客户端 IP 地址，所以我认为在这种情况下它是无用的.我也无法转发到另一个 URL.

I also tried spring redirect and forward. But redirect does not change the request's client ip address so i think it is useless in this case. I could not forward to another URL either.

有没有更合适的方法来实现这一目标?提前致谢.

Is there a more appropriate way to achieve this? Thanks in advance.

推荐答案

您可以使用此镜像/代理所有请求:

You can mirror/proxy all requests with this:

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();
}

这不会反映任何标题.

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