spring mvc rest service redirect / forward / proxy [英] spring mvc rest service redirect / forward / proxy

问题描述

我使用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，但我有以下内容问题：
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，我需要代理机器上的重定向层（可由客户端访问）调用实际的休息服务。

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进行新的调用：
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);

}

这没关系，但我需要重写每个方法控制器使用resttemplate。此外，这会导致代理计算机上的冗余序列化/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编写泛型函数，但它没有用完：

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(), ? , ?);

}

我找不到一个与请求一起使用的resttemplate方法和响应对象。

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。我也无法转发到其他网址。

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

您可以用以下方式镜像/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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