HttpURLConnection-如何在setRequestProperty中發送標題

Question

我正在嘗試使用如下Java代碼在給定的URL中發送標頭：

URL u = new URL("http://domain:8081/App/mycall");
HttpURLConnection con= (HttpURLConnection) u.openConnection();
con.setRequestProperty("Accept", "application/json");
con.setRequestProperty("Auth-Token", authToken);
BufferedReader rd = new BufferedReader(new InputStreamReader(con.getInputStream()));

然后在我的應用程序中，我正在檢查Auth-Token如下所示：

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
    HttpServletRequest req = (HttpServletRequest) request;
    if (SecurityContextHolder.getContext().getAuthentication() != null) {
        String reqToken = req.getHeader("Auth-Token");
    }
}

當我在帶標題的郵遞員中調用上述URL時，它可以正常工作。 但是，當我使用Java代碼運行URL時， SecurityContextHolder.getContext().getAuthentication()始終返回null 。

我究竟做錯了什么？

Answer 1

在創建URL之前添加以下行可解決我的問題：

CookieHandler.setDefault(new CookieManager());

現在，在給定URL中發送標題看起來像這樣，並且可以正常工作：

CookieHandler.setDefault(new CookieManager());
URL u = new URL("http://domain:8081/App/mycall");
HttpURLConnection con= (HttpURLConnection) u.openConnection();
con.setRequestProperty("Accept", "application/json");
con.setRequestProperty("Auth-Token", authToken);
BufferedReader rd = new BufferedReader(new InputStreamReader(con.getInputStream()));