读取源代码时出现Java 安卓异常
我正在尝试从craigslist位置页面读取源代码。有时我会遇到一个例外,不明白为什么。通过我的3g手机,它会工作一段时间,然后突然抛出异常,这很奇怪。当我在WiFi上测试它时,75%的时间都会抛出此异常
07-08 02:43:39.542: W/System.err(16898): java.net.SocketTimeoutException
07-08 02:43:39.562: W/System.err(16898): at org.apache.harmony.luni.net.PlainSocketImpl.read(PlainSocketImpl.java:461)
07-08 02:43:39.562: W/System.err(16898): at org.apache.harmony.luni.net.SocketInputStream.read(SocketInputStream.java:85)
07-08 02:43:39.566: W/System.err(16898): at org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:103)
07-08 02:43:39.570: W/System.err(16898): at org.apache.http.impl.io.AbstractSessionInputBuffer.read(AbstractSessionInputBuffer.java:134)
07-08 02:43:39.570: W/System.err(16898): at org.apache.http.impl.io.ChunkedInputStream.read(ChunkedInputStream.java:161)
07-08 02:43:39.574: W/System.err(16898): at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:159)
07-08 02:43:39.574: W/System.err(16898): at java.io.InputStreamReader.read(InputStreamReader.java:255)
07-08 02:43:39.574: W/System.err(16898): at java.io.BufferedReader.fillBuf(BufferedReader.java:128)
07-08 02:43:39.578: W/System.err(16898): at java.io.BufferedReader.readLine(BufferedReader.java:396)
07-08 02:43:39.578: W/System.err(16898): at com.codalata.craigslistchecker.GetLocation.GetLocationData(GetLocation.java:56)
07-08 02:43:39.578: W/System.err(16898): at com.codalata.craigslistchecker.Location$1.run(Location.java:407)
07-08 02:43:39.582: W/System.err(16898): at java.lang.Thread.run(Thread.java:1019)
我只是想从服务器上读取数据。任何帮助都将不胜感激
我把计数器放在while循环中,看看它在出错之前循环了多少次。有时它循环519次,而另一些则循环400次
public class GetLocation {
int CityindexEnd;
int CityindexStart;
int StateC;
String URLME = null;
String Search = "a href=\"";
int count = 0;
@SuppressWarnings("finally")
public String GetLocationData()
throws Exception {
BufferedReader in = null;
String data = null;
try {
HttpGet httpGet = new HttpGet(
"http://www.craigslist.org/about/sites");
HttpParams httpParameters = new BasicHttpParams();
int timeoutConnection = 6000;
HttpConnectionParams.setConnectionTimeout(httpParameters,
timeoutConnection);
int timeoutSocket = 12000;
HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);
HttpResponse response = httpClient.execute(httpGet);
in = new BufferedReader(new InputStreamReader(response.getEntity()
.getContent()));
StringBuffer sb = new StringBuffer("");
String l = "";
String ln = System.getProperty("line.separator");
while ((l = in.readLine()) != null) {
count++;
sb.append(l + ln);
}
in.close();
data = sb.toString();
return data;
} catch (Exception e) {
e.printStackTrace();
} finally {
if (in != null) {
try {
in.close();
return URLME;
} catch (Exception e) {
e.printStackTrace();
}
}
return URLME;
}
}
# 1 楼答案
您正在使用设置超时
基本上,您正在失去连接(或从未完全拥有连接),并且花费的时间太长。如果不想超时,可以删除这些行。如果你这样做了,你需要优雅地处理这个例外