客户端工具类--ServletUtils

╰+哭是因爲堅強的太久メ 2024-03-17 19:57 73阅读 0赞

package com.ruoyi.common.utils;
    
    import com.ruoyi.common.core.text.Convert;
    import org.springframework.web.context.request.RequestAttributes;
    import org.springframework.web.context.request.RequestContextHolder;
    import org.springframework.web.context.request.ServletRequestAttributes;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import javax.servlet.http.HttpSession;
    import java.io.IOException;
    
    /**
     * 客户端工具类
     *
     * @author ruoyi
     */
    public class ServletUtils {
        /**
         * 获取String参数
         */
        public static String getParameter(String name) {
            return getRequest().getParameter(name);
        }
    
        /**
         * 获取String参数
         */
        public static String getParameter(String name, String defaultValue) {
            return Convert.toStr(getRequest().getParameter(name), defaultValue);
        }
    
        /**
         * 获取Integer参数
         */
        public static Integer getParameterToInt(String name) {
            return Convert.toInt(getRequest().getParameter(name));
        }
    
        /**
         * 获取Integer参数
         */
        public static Integer getParameterToInt(String name, Integer defaultValue) {
            return Convert.toInt(getRequest().getParameter(name), defaultValue);
        }
    
        /**
         * 获取request
         */
        public static HttpServletRequest getRequest() {
            return getRequestAttributes().getRequest();
        }
    
        /**
         * 获取response
         */
        public static HttpServletResponse getResponse() {
            return getRequestAttributes().getResponse();
        }
    
        /**
         * 获取session
         */
        public static HttpSession getSession() {
            return getRequest().getSession();
        }
    
        public static ServletRequestAttributes getRequestAttributes() {
            RequestAttributes attributes = RequestContextHolder.getRequestAttributes();
            return (ServletRequestAttributes) attributes;
        }
    
        /**
         * 将字符串渲染到客户端
         *
         * @param response 渲染对象
         * @param string   待渲染的字符串
         * @return null
         */
        public static String renderString(HttpServletResponse response, String string) {
            try {
                response.setContentType("application/json");
                response.setCharacterEncoding("utf-8");
                response.getWriter().print(string);
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }
    
        /**
         * 是否是Ajax异步请求
         *
         * @param request
         */
        public static boolean isAjaxRequest(HttpServletRequest request) {
            String accept = request.getHeader("accept");
            if (accept != null && accept.indexOf("application/json") != -1) {
                return true;
            }
    
            String xRequestedWith = request.getHeader("X-Requested-With");
            if (xRequestedWith != null && xRequestedWith.indexOf("XMLHttpRequest") != -1) {
                return true;
            }
    
            String uri = request.getRequestURI();
            if (StringUtils.inStringIgnoreCase(uri, ".json", ".xml")) {
                return true;
            }
    
            String ajax = request.getParameter("__ajax");
            if (StringUtils.inStringIgnoreCase(ajax, "json", "xml")) {
                return true;
            }
            return false;
        }
    }