ServletRequest 【专题】

获取所有header

private static Map<String, String> getHeaders(HttpServletRequest request) {
        Map<String, String> headerMap = new HashMap<>();
        Enumeration<String> enumeration = request.getHeaderNames();
        while (enumeration.hasMoreElements()) {
            String name    = enumeration.nextElement();
            String value = request.getHeader(name);
            headerMap.put(name, value);
        }
        return headerMap;
    }

获取所有QueryString参数

private static Map<String, String> getParameters(HttpServletRequest request) {
        Map<String, String> parameterMap = new HashMap<>();
        Enumeration<String> enumeration = request.getParameterNames();
        while (enumeration.hasMoreElements()) {
            String name    = enumeration.nextElement();
            String value = request.getParameter(name);
            parameterMap.put(name, value);
        }
        return parameterMap;
    }

获取所有Cookie信息

/**
     * 获取所有Cookie信息
     *
     * @param cookies
     * @return
     */
    private String collectAllCoolies(Cookie[] cookies) {
        if (cookies != null) {
            StringBuilder content = new StringBuilder();
            Arrays.stream(cookies).filter(Objects::nonNull).forEach(cookie -> {
                content.append(" [ ")
                        .append(cookie.getName()).append(" : ").append(cookie.getValue())
                        .append(" ] ");
            });
            return content.toString();
        }
        return "";
    }

基于cookie使用过滤器实现客户每次访问自登陆一次 

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