netutil.java

来自「cwbbs 云网论坛源码」· Java 代码 · 共 74 行

package com.cloudwebsoft.framework.util;

import java.net.URL;
import java.io.BufferedReader;
import java.net.HttpURLConnection;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.Cookie;
import java.io.InputStreamReader;
import cn.js.fan.util.StrUtil;
import java.io.DataInputStream;
import java.io.DataOutputStream;


public class NetUtil {
    public NetUtil() {
        super();
    }

    public static String gather(HttpServletRequest request, String charset, String linkUrl) {
        
        StringBuffer str = new StringBuffer(100);
        HttpURLConnection huc = null;
        BufferedReader reader = null;
        try {
            URL url = new URL(linkUrl);
            huc = (HttpURLConnection) url.openConnection();

            
            String jsessionid = "";
            Cookie c[] = request.getCookies();
            if (c != null) {
                for (int i = 0; i < c.length; i++) {
                    if (c[i].getName().equalsIgnoreCase("jsessionid")) {
                        jsessionid = c[i].getValue();
                        huc.setRequestProperty("Cookie", "JSESSIONID="+jsessionid);
                        break;
                    }
                }
            }

            String type = huc.getContentType();
            if (type != null) {
                
                int index = type.indexOf("charset=");
                if (index != -1) {
                    index = index + 8;
                    charset = type.substring(index).trim();
                }
            }
            reader = new BufferedReader(
                    new InputStreamReader(huc.getInputStream(), charset));

            

            char[] buffer = new char[10240];
            int count = 0;
            while ((count = reader.read(buffer)) > 0) {
                
                str.append(buffer, 0, count);
            }
        } catch (Exception e) {
            LogUtil.getLog("NetUtil").error("gather: " + StrUtil.trace(e));
        } finally {
            try {
                reader.close();
            } catch (Exception e) {}
            huc.disconnect();
        }

        return str.toString();
    }

}