求助！android虚拟机端访问电脑的tomcat超时！

你连接的是 127.0.0.1 ？ tomcat 也装在手机上了？

没有，是在电脑上装了，在电脑上android虚拟机运行的，感觉可能是路径不对，但是不知道怎么弄

虚拟机访问127.0.0.1应该是访问不到你的电脑上的tomcat的

好吧，参考http://zhidao.baidu.com/link?url=Kg8b6m5OkTq7-oNXjDZt9ydDGCVGCZt-DaYEstFiP2tHsFVy1w1REYvlZkwFWns6d5a6dGO9-aAAG0iJvtC01q这个问题，我把自己的ip换上去了
换后的地址url如下：http://10.28.20.74：8080/setup.exe
然后访问是应该成功了但是报出了新的错误
11-22 12:55:17.342: I/System.out(643): 服务器出错
11-22 12:55:17.363: W/System.err(643): java.lang.NullPointerException
11-22 12:55:17.373: W/System.err(643): at libcore.net.http.HttpConnection$Address.hashCode(HttpConnection.java:343)
11-22 12:55:17.383: W/System.err(643): at java.util.HashMap.get(HashMap.java:298)
11-22 12:55:17.383: W/System.err(643): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:67)
11-22 12:55:17.383: W/System.err(643): at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
11-22 12:55:17.383: W/System.err(643): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308)
11-22 12:55:17.383: W/System.err(643): at libcore.net.http.HttpEngine.connect(HttpEngine.java:303)
11-22 12:55:17.393: W/System.err(643): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282)
11-22 12:55:17.393: W/System.err(643): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232)
11-22 12:55:17.413: I/WindowManager(78): createSurface Window{412f6a48 Toast paused=false}: DRAW NOW PENDING
11-22 12:55:17.413: W/System.err(643): at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:80)
11-22 12:55:17.413: W/System.err(643): at com.myy.dowloaderforandrop.MainActivity$2.run(MainActivity.java:61)
11-22 12:56:26.173: D/dalvikvm(643): GC_CONCURRENT freed 210K, 4% free 7104K/7367K, paused 5ms+3ms
11-22 12:56:28.192: D/dalvikvm(171): GC_CONCURRENT freed 384K, 8% free 7358K/7943K, paused 4ms+4ms
11-22 12:59:11.422: W/ThrottleService(78): unable to find stats for iface rmnet0
好吧，如果还有人看的话，再帮一下吧。。

看起来是你从HashMap取值的时候，传了个null进去

全代码贴上我本身函数是没用，应该是java函数本身调用的HashMap
package com.myy.dowloaderforandrop;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.RandomAccessFile;
import java.net.HttpURLConnection;
import java.net.URL;import android.os.Message;
public class DownloadThread extends Thread { public int id,start,end;
public String path;
/**
* @param path 下载路径
* @param id 线程id
* @param start 开始下载位置
* @param end 结束下载位置
*/
public DownloadThread(String path,int id, int start, int end) {
this.id = id;
this.start = start;
this.end = end;
this.path=path;
} public void run() {

try {

File check = new File("/sdcard/"+id+".txt");
byte [] temp = new byte[1024];
int downloaded_len=0;
if(check.exists()&&check.length()>0)
{
FileInputStream fis = new FileInputStream(check);
int temp_len;
temp_len = fis.read(temp);
String down_str = new String(temp,0,temp_len);
downloaded_len = Integer.parseInt(down_str);
System.out.println("线程"+id+" 已下载: "+downloaded_len);
fis.close();
}

URL url;
url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
//重要：请求服务器只是下载部分内容且设置下载位
conn.setRequestProperty("Range","bytes="+(start+downloaded_len)+"-"+end);
System.out.println("线程"+id+" 下载位置: "+(start+downloaded_len));
conn.setConnectTimeout(5000);
conn.setRequestMethod("GET");

//服务器请求全部资源成功返回200,请求部分资源成功返回203
int code =conn.getResponseCode();
System.out.println("线程"+id+" code: "+code);
InputStream is = conn.getInputStream();
RandomAccessFile raf = new RandomAccessFile("/sdcard/setup.exe","rwd");
//  记录已经下载的位置到文件夹

//定位
raf.seek(start+downloaded_len);

int len =0;

byte [] buffer = new byte[1024];
while((len=is.read(buffer))!=-1)
{
RandomAccessFile record = new RandomAccessFile("/sdcard/"+id+".txt","rwd");
//只有一个参数的write，结束位置为buffer的长度（结尾），若buffer未装满
//就会出错
raf.write(buffer,0,len);
downloaded_len+=len;
//将下载长度放入记录文件
record.write(String.valueOf(downloaded_len).getBytes());
record.close();
// System.out.println("线程"+id+" 下载位置: "+(start+downloaded_len));
}
is.close();
raf.close();
MainActivity.thread_num--;
System.out.println("线程"+id+"下载完毕");
} catch (Exception e) {
System.out.println("线程"+id+"出错");
// Message msg = new Message();
// msg.what=MainActivity.ERROR;
// msg.obj="线程"+id+"出错";
// MainActivity.handler.sendMessage(msg);
e.printStackTrace();
}finally
{
System.out.println("还有"+MainActivity.thread_num+"个线程");
if(MainActivity.thread_num==0)//所有线程已经完成
{
for(int id = 1;id<=MainActivity.thread_count;id++)
{
File dle_file = new File("/sdcard/"+id+".txt");
dle_file.delete();
System.out.println(id+".txt 已经删除");
}
}
}

}

}
package com.myy.dowloaderforandrop;import java.io.RandomAccessFile;
import java.net.HttpURLConnection;
import java.net.URL;import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity {

protected static final int ERROR = 0;
public static int thread_count = 3;
public static int thread_num = thread_count;
EditText et;
ProgressBar pb;
Button but;

public Handler handler = new Handler()
{
public void handleMessage(Message msg) {
super.handleMessage(msg);
if(msg.what==ERROR)
{
Toast.makeText(MainActivity.this,(String)msg.obj,Toast.LENGTH_SHORT).show();
}
}

};
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        et = (EditText) findViewById(R.id.et_url);
        pb = (ProgressBar) findViewById(R.id.pb_down);
        but = (Button) findViewById(R.id.but_down);
    }    public void download(View view)
    {
     //连接服务器，获得文件长度并且在本地创建一个相同大小的文件
     new Thread()
     {
     public void run()
     {
     try {

     String path =et.getText().toString().trim();
     URL url = new URL(path);
     HttpURLConnection conn = (HttpURLConnection) url.openConnection();
     conn.setConnectTimeout(1000);
     conn.setRequestMethod("GET");
     conn.connect();
     int code =conn.getResponseCode();
     int len;
     if(code==200)
     {
     len = conn.getContentLength();
     int blocklen = len/thread_count;
     System.out.println("文件总长度为"+len);
     //创建一个长度相同的文件
     RandomAccessFile raf = new RandomAccessFile("/sdcard/setup.exe","rwd");
     raf.setLength(len);
     raf.close();

     for(int id = 1;id<=thread_count;id++)
     {
     int start = (id-1)*blocklen;
     int end = id*blocklen-1;
     if(id==thread_count)//为最后一个线程时，使他的结尾为总长度
     {
     end=len;
     }
     System.out.println("线程"+id+" start："+start+" end: "+end);
     new DownloadThread(path,id,start,end).start();
     }
     }
     else
     {
     System.out.println("连接出错" );
     Message msg = new Message();
     msg.what=ERROR;
     msg.obj="连接出错";
     handler.sendMessage(msg);
     }
     } catch (Exception e) {
     System.out.println("服务器出错" );
     Message msg = new Message();
msg.what=ERROR;
msg.obj="服务器出错";
handler.sendMessage(msg);
     e.printStackTrace();
     }
     }
     }.start();
    }
}
先贴着吧，以防有好心人帮我找......
谢谢楼上了，我再检查下吧

调试易

求助！android虚拟机端访问电脑的tomcat超时！

解决方案 »