Android利用HttpURLConnection实现模拟登录

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最近在做一个APP，需要模拟登录教务处，之前曾经用HttpClient做过，点这里，但是发现最新的Android SDK已经不支持Httpclient了，所以只好在琢磨一下HttpURLConnection实现了，其中一个问题浪费了不少时间，下面这行代码一旦添加就无法登录：

httpURLConnection.setRequestProperty("Content-Type","text/html; charset=GBK");

贴一下效果，由于是实现模拟登录，就没有解析，主要是能用Cookie访问到。

此外，有一个重要发现，用电脑和手机对应的Cookie都能登录，说明服务器可以对应多个Cookie！

真是一路磕磕绊绊！

贴下主要代码：

1.结构

2.MainActivity

package io.github.zhaoyu1995.uprtest;import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;public class MainActivity extends AppCompatActivity {
private TextView kebiao;
private MyTasks task;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
kebiao = (TextView) findViewById(R.id.kebiao);
task = new MyTasks("201445004", "******", new OnFinishTask() {
@Override
public void onFinish(String data) {
kebiao.setText(data);
}
});
task.execute();
}}

3.MyTask

package io.github.zhaoyu1995.uprtest;import android.os.AsyncTask;import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;public class MyTasks extends AsyncTask<Void, Void, String> {
private OnFinishTask onFinishTask;
private String user;
private String pass;
private String result; private List<String> finalCookie = new ArrayList<String>();
private String jiaowuchu = "http://zhjw.dlut.edu.cn/loginAction.do";
public MyTasks (String user, String pass, OnFinishTask onFinishTask) {
this.user = user;
this.pass = pass; this.onFinishTask = onFinishTask;
} @Override
protected String doInBackground(Void... voids) {
URL url;
HttpURLConnection httpURLConnection; try {
url = new URL(jiaowuchu);
httpURLConnection = (HttpURLConnection) url.openConnection(); httpURLConnection.setDoOutput(true);//是否向链接输出
httpURLConnection.setDoInput(true); httpURLConnection.setRequestMethod("POST"); httpURLConnection.setUseCaches(false);
httpURLConnection.setInstanceFollowRedirects(true); //不知道为什么加了这一行就不行了
httpURLConnection.setRequestProperty("Content-Type","text/html; charset=GBK");
httpURLConnection.setConnectTimeout(10*1000);//连接超时单位毫秒
httpURLConnection.setReadTimeout(10*1000);//读取超时单位毫秒 // 连接，从postUrl.openConnection()至此的配置必须要在connect之前完成，
// 要注意的是connection.getOutputStream会隐含的进行connect。
httpURLConnection.connect();
DataOutputStream out = new DataOutputStream(httpURLConnection
.getOutputStream()); StringBuffer params = new StringBuffer();
params.append("zjh").append("=").append(user).append("&")
.append("mm").append("=").append(pass);
httpURLConnection.getOutputStream().write(params.toString().getBytes("gb2312"));
out.flush();
out.close();
BufferedReader reader = new BufferedReader(new InputStreamReader(
httpURLConnection.getInputStream(), "gb2312"));
String line;
while ((line = reader.readLine()) != null) {
result = result + line;
}
reader.close(); result="";
Map<String, List<String>> header = httpURLConnection.getHeaderFields();
List<String> cookies = header.get("Set-Cookie");
Iterator<String> it = cookies.iterator();
StringBuffer sbu = new StringBuffer();
// sbu.append("eos_style_cookie=default; ");
while(it.hasNext()){
sbu.append(it.next());
} result = cookies.size()+""; for (int i = 0; i < cookies.size(); i++) {
finalCookie.add(cookies.get(i));
} result = result+finalCookie.get(0);
result = result+"--------------"+finalCookie.get(1); httpURLConnection.disconnect(); } catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} //get课表 try {
url = new URL("http://zhjw.dlut.edu.cn/xkAction.do?actionType=6");
httpURLConnection = (HttpURLConnection) url.openConnection();
//必要的设置
httpURLConnection.setConnectTimeout(10*1000);//连接超时单位毫秒
httpURLConnection.setReadTimeout(10*1000);//读取超时单位毫秒
httpURLConnection.setRequestProperty("Cookie", finalCookie.get(0)+", "+finalCookie.get(1));
System.out.println(finalCookie.get(0)+", "+finalCookie.get(1));
// httpURLConnection.setRequestProperty("Cookie", "JSESSIONID=nprNP171vDeCHb_5hawDv; path=/, NSC_kjbpxv-iuuq=2385a3d4705debd5f29101f47dcbd3b0e664f181853b4741569229a0561453d027e6fa67;path=/");
httpURLConnection.connect();
BufferedReader reader = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream(), "gb2312"));
String lines;
//result = "";
while ((lines = reader.readLine()) != null) {
result = result + lines;
}
reader.close();
// 断开连接
result = result + httpURLConnection.getResponseCode();
httpURLConnection.disconnect(); } catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} return result;
} @Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
onFinishTask.onFinish(s);
}
}