com.mmd.mssp.util.WebUtil.java Source code

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Here is the source code for com.mmd.mssp.util.WebUtil.java

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package com.mmd.mssp.util;

import com.alibaba.fastjson.JSONObject;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLDecoder;
import java.util.Date;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 *
 * @author changshu.li
 */
public class WebUtil {

    private static final Log logger = LogFactory.getLog(WebUtil.class);
    private static final String IF_MODIFIED_SINCE = "If-Modified-Since";

    /**
     *
     * @param request
     * @return   ??  -1
     */
    public static long getIfModifiedSince(HttpServletRequest request) {
        try {
            long since = request.getDateHeader(IF_MODIFIED_SINCE);
            return since;
        } catch (Exception ex) {
            logger.warn("data time parse error ! :" + ex.getMessage());
        }
        return -1L;
    }

    public boolean isModified(HttpServletRequest request, Date date) {
        long since = getIfModifiedSince(request);
        if (since < 0) {
            return true;
        }
        return date.getTime() > since;
    }

    public static String getIpAddr(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.getRemoteAddr();
        }
        return ip;
    }

    public static String replaceSqlQuery(String val) {
        return val.replaceAll("\\\\", "\\\\\\\\").replaceAll("%", "\\\\%").replaceAll("_", "\\\\_");
    }

    public static String getHttpQueryParam(HttpServletRequest request, String key)
            throws UnsupportedEncodingException {
        String val, ie = request.getParameter("ie");
        String ua = request.getHeader("User-Agent");
        if (ua != null && ua.contains("MSIE")) {//IE  GBK ?
            if (ie != null) {
                try {
                    val = WebUtil.getHttpQueryParam(request, key, ie);
                } catch (UnsupportedEncodingException ex) {
                    val = WebUtil.getHttpQueryParam(request, key, "UTF-8");
                }
            } else {
                val = WebUtil.getHttpQueryParam(request, key, "GBK");
            }
        } else {
            val = WebUtil.getHttpQueryParam(request, key, "UTF-8");
        }
        request.setAttribute("QueryValue", val);
        //      val = val.replaceAll("\\\\", "\\\\\\\\").replaceAll("%", "\\\\%").replaceAll("_", "\\\\_");
        return val;
    }

    public static String getHttpQueryParam(HttpServletRequest request, String key, String charset)
            throws UnsupportedEncodingException {
        String queryString = request.getQueryString();
        if (!StringUtils.isAsciiPrintable(queryString)) {// ? ASCII ??
            byte[] bytes = queryString.getBytes("iso-8859-1");
            queryString = new String(bytes, charset);
        }
        String val = StringUtil.searchKeyValue(queryString, key);
        if (val != null) {
            val = URLDecoder.decode(val, charset);
        }
        request.setAttribute("QueryDecodeCharset", val);
        return val;
    }
}