Java Spring社交Facebook-请求错误

我正在接收org.springframework.web.client.HttpClientErrorException:400错误请求，当我尝试通过.exchangeForAccess方法获取AccessGrant对象时，是什么导致了此错误

我的代码以前一直在工作，我不知道现在发生了什么

我的简化测试代码：

@RequestMapping(value = Routes.ADD_OPINION)
public String addAction( ModelMap map, @RequestParam(value = "code",required = false) String token)
        throws IOException
{

    FacebookConnectionFactory f = new FacebookConnectionFactory(Config.FACEBOOK_APP_ID, Config.FACEBOOK_APP_SECRET);

    String redirectUri = "http://localhost:8080/eFirmApp" + Routes.ADD_OPINION;

    if (token == null) {
        HttpSession session = request.getSession();
        session.setAttribute("content", request.getParameter("content"));
        session.setAttribute("c_id", request.getParameter("company_id"));
        session.setAttribute("rate", request.getParameter("rate"));

        OAuth2Parameters p = new OAuth2Parameters();
        p.setRedirectUri(redirectUri);
        p.setScope("public_profile");

        String r = f.getOAuthOperations().buildAuthorizeUrl(p);

        return ("redirect:" + r);

        // return this.facebookService.redirectToAuth();
    }

    AccessGrant accessGrant = f.getOAuthOperations() //exception here
            .exchangeForAccess(token, redirectUri, null);

    Connection<Facebook> connection = f.createConnection(accessGrant);

    HttpSession session = request.getSession();

    int msg = this.opinionService.addOpinion(
            connection,
            (String)session.getAttribute("content"),
            Long.parseLong(session.getAttribute("c_id").toString()),
            Float.parseFloat(session.getAttribute("rate").toString())
    );

    map.addAttribute("msg", msg);

    return  this.getActionView("saveopinion");
}

编辑：

当我用jSoup发送请求时，如下所示：`

String u =  "https://graph.facebook.com/oauth/access_token" +

                    "?client_id=" + Config.FACEBOOK_APP_ID + "&redirect_uri=" + Routes.APP_URL + Routes.SAVE_OPINION
                    + "&client_secret=" + Config.FACEBOOK_APP_SECRET + "&code=" + code;

            org.jsoup.Connection c = Jsoup.connect(u);
            org.jsoup.Connection.Response r = null;

            c.ignoreContentType(true);

            c.ignoreHttpErrors(true);
            c.header("Content-Type", "text/plain");

            try {
                r = c.execute();
            } catch (IOException e) {


            }

            return r.body();`

我收到来自facebook的错误“已使用授权码”。

code

是控制器操作的@RequestParam注释参数 你知道为什么吗？

幸运猜测，基于你的url中可能有空间，例如“&scope”

---

您可以打印url以进行验证。

这不是url的问题，我可以获取代码，但当我尝试将其交换为access\u token facebook返回http 400代码时，是否可以从url获取access\u token，如下所示：

String u =  "https://graph.facebook.com/oauth/access_token" +

                    "?client_id=" + Config.FACEBOOK_APP_ID + "&redirect_uri=" + Routes.APP_URL + Routes.SAVE_OPINION
                    + "&client_secret=" + Config.FACEBOOK_APP_SECRET + "&code=" + code;

            org.jsoup.Connection c = Jsoup.connect(u);
            org.jsoup.Connection.Response r = null;

            c.ignoreContentType(true);

            c.ignoreHttpErrors(true);
            c.header("Content-Type", "text/plain");

            try {
                r = c.execute();
            } catch (IOException e) {


            }

            return r.body();`