efunbox_audio/src/main/java/cn/efunbox/audio/utils/HttpUtil.java

package cn.efunbox.audio.utils;

import com.alibaba.fastjson.JSON;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.StringUtils;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by tomas on 2017/6/4.
 */

public class HttpUtil {

    private static final Logger logger = LoggerFactory.getLogger(HttpUtil.class);

    public static void responseOk(HttpServletRequest request,HttpServletResponse response) {
        responseOutWithJson(request,response, ApiResult.ok());
    }
    public static void responseOkData(HttpServletRequest request,HttpServletResponse response, Object data) {
        Map map = new HashMap<>();
        map.put("code", ApiCode.OK.getCode());
        map.put("message", ApiCode.OK.getMessage());
        map.put("data", data);
        responseOutWithJson(request, response, map);
    }

    public static void responseApiCode(HttpServletRequest request,HttpServletResponse response, ApiCode code) {
        if(code.getCode()==ApiCode._C_OK){
            responseOutWithJson(request,response, ApiResult.ok());
        }else {
            responseOutWithJson(request,response, ApiResult.error(code));
        }
    }
    public static void responseOutWithJson(HttpServletRequest request,HttpServletResponse response, Object data) {
        //将实体对象转换为JSON Object转换
        response.setCharacterEncoding("UTF-8");
        String origin = request.getHeader("Origin");
        // TODO  orign 和 refer 的判断 .....
        if (null!=origin){
            response.setHeader("Access-Control-Allow-Origin", origin);
        }else {
            response.setHeader("Access-Control-Allow-Origin", "http://cms.efunbox.cn");
        }
        response.setContentType("application/json; charset=utf-8");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Methods", "GET, POST, HEAD, OPTIONS, PUT, DELETE, TRACE, PATCH");
        //response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", "Origin, X-Token,Authentication, Accept, X-Requested-With, Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers, Authorization, Cache-control, id, token");
        response.setHeader("X-Frame-Options","SAMEORIGIN");
        PrintWriter out = null;
        try {
            out = response.getWriter();
            out.append(JSON.toJSONString(data));
            logger.info("url= {} 返回JSON ={} ",request.getRequestURI(), JSON.toJSONString(data));
        } catch (IOException e) {
            logger.error("request ={} 返回 失败 e={}" ,request.getRequestURI(),e);
        } finally {
            if (out != null) {
                out.close();
            }
        }
    }

    public static void delCookies(HttpServletRequest request,HttpServletResponse response, String...  cookies) {
        for (String cookieName : cookies) {
            Cookie cookie = new Cookie(cookieName, null);
            String cookiePath = request.getContextPath();
            if (!StringUtils.hasLength(cookiePath)) {
                cookiePath = "/";
            }
            cookie.setPath(cookiePath);
            cookie.setMaxAge(0);
            response.addCookie(cookie);
        }
    }

    /**
     * 获取客户端的ip
     * @param request
     * @return
     */
    public static String getIpAddress(HttpServletRequest request) {
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_CLIENT_IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        return ip;
    }



}