java htttp 登录返回cookie 通过cookie 访问其他资源
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import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* Created by yaoyao on 16/3/19.
*/
public class test0319 {
int countUrl=0;
public static void main(String[] args) {
try {
// String cookie = new test0319().login();
new test0319().getOnehtml("http://192.168.1.103:8090/front/sku/list","utf-8","[rememberMe=deleteMe; Path=/front; Max-Age=0; Expires=Fri, 18-Mar-2016 16:15:23 GMT, JSESSIONID=68683D96F61B34C1CDFB5431ABA5B4BA; Path=/front/; HttpOnly]");
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public String getOneHtml(String htmlurl,String encoding,String cookie) throws IOException, InterruptedException
{
//最多重复请求5次，用来反爬的
if(countUrl==5){
countUrl=0;
return "0";
}
//System.out.println(cookie);
StringBuilder content = new StringBuilder();
HttpURLConnection httpConn = null;
try
{
URL url = new URL(htmlurl);
httpConn = (HttpURLConnection) url.openConnection();
//头设置，get方法
HttpURLConnection.setFollowRedirects(true);
httpConn.setRequestMethod("GET");
httpConn.setRequestProperty("User-Agent","Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.152 Safari/537.36");
httpConn.setRequestProperty("Connection","keep-alive");
httpConn.setRequestProperty("Accept","text/html,application/xhtml+xml,application/xml");
httpConn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
httpConn.setRequestProperty("cookie",cookie);
httpConn.setRequestProperty("Cache-control","no-cache, no-store");
httpConn.setRequestProperty("Host","http://192.168.1.103:8090");
httpConn.setConnectTimeout(20000);
httpConn.setReadTimeout(20000);
// logger.info(httpConn.getResponseMessage());
BufferedReader in = new BufferedReader(new InputStreamReader(httpConn.getInputStream(), encoding));////打开连接，获取内容
String temp;
while ((temp = in.readLine()) != null)
//替换点一些无用到符号
{
content.append(temp);
}
in.close();
httpConn.disconnect();
}
catch (final MalformedURLException me)
{
System.out.println("url不存在!");
me.getMessage();
throw me;
}
catch (final FileNotFoundException me)
{
System.out.println(htmlurl+"反爬启动");
return "0";
}
catch (final IOException e)
{
e.printStackTrace();
System.out.println("反爬启动:"+htmlurl+"次数:"+countUrl++);
httpConn.disconnect();
Thread.sleep(20000);
return this.getOneHtml(htmlurl, encoding,cookie);
}
//System.out.println(sb);
countUrl=0;
httpConn.disconnect();
System.out.println(content.toString());
return content.toString();
}
public String login() throws MalformedURLException, InterruptedException {
String htmlurl = "http://192.168.1.103:8090/front/login";
HttpURLConnection httpConn = null;
String cookie = "";
try {
URL url = new URL(htmlurl);
httpConn = (HttpURLConnection) url.openConnection();
HttpURLConnection.setFollowRedirects(true);
httpConn.setRequestMethod("POST");
httpConn.setRequestProperty("User-Agent", "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.152 Safari/537.36");
httpConn.setRequestProperty("Connection", "keep-alive");
httpConn.setRequestProperty("Accept", "text/html,application/xhtml+xml,application/xml");
httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
httpConn.setRequestProperty("Cache-control", "no-cache, no-store");
httpConn.setRequestProperty("Host", "http://192.168.1.103:8090/front");
//httpConn.setRequestProperty("Referer","https://www.linkedin.com/uas/login?session_redirect=http://www.linkedin.com/profile/view?id=222323610&authType=name&authToken=fcEe");
//post方法，重定向设置
httpConn.setDoOutput(true);
httpConn.setDoInput(true);
httpConn.setUseCaches(false);
httpConn.setInstanceFollowRedirects(false);
//写入，post方法必须用流写入的方式传输数据
StringBuffer str_buf = new StringBuffer(4096);
OutputStream os = httpConn.getOutputStream();
str_buf.append("username").append("=").append("13062779665").append("&");
str_buf.append("password").append("=").append("111111").append("&");
//str_buf.append("session_redirect").append("=").append(redictURL);
os.write(str_buf.toString().getBytes());
os.flush();
os.close();
httpConn.setConnectTimeout(20000);
httpConn.setReadTimeout(20000);
//获取重定向和cookie
//String redictURL= httpConn.getHeaderField( "Location" );
//System.out.println("第一次请求重定向地址 location="+redictURL);
//获取cookie
Map<String, List<String>> map = httpConn.getHeaderFields();
//System.out.println(map.toString());
Set set = map.keySet();
for (Iterator iterator = set.iterator(); iterator.hasNext(); ) {
String key = String.valueOf(iterator.next());
if (key != null) {
if (key.equals("Set-Cookie")) {
System.out.println("key=" + key + ",开始获取cookie"+map.get("Set-Cookie").toString());
List<String> list = map.get(key);
for (String str : list) {
String temp = str.split("=")[0];
//System.out.println(temp);
//cookie包含到信息非常多，调试发现登录只需这条信息
// if (temp.equals("li_at")) {
cookie = str;
return cookie;
// }
}
}
}
}
httpConn.disconnect();
} catch (final MalformedURLException me) {
System.out.println("url不存在!");
me.getMessage();
throw me;
} catch (final FileNotFoundException me) {
System.out.println(htmlurl + "反爬启动");
return "0";
} catch (final IOException e) {
e.printStackTrace();
System.out.println("反爬启动:" + htmlurl + "次数:" + countUrl++);
httpConn.disconnect();
Thread.sleep(20000);
return login();
}
System.out.println(cookie);
return cookie;
}}
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