Question

当我尝试使用Jsoup解析HTML页面时，我得到SocketTimeoutException：

java.net.SocketTimeoutException: Read timed out
  at java.net.SocketInputStream.socketRead0(Native Method)
  at java.net.SocketInputStream.read(Unknown Source)
  at java.io.BufferedInputStream.fill(Unknown Source)
  at java.io.BufferedInputStream.read1(Unknown Source)
  at java.io.BufferedInputStream.read(Unknown Source)
  at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
  at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
  at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
  at java.net.HttpURLConnection.getResponseCode(Unknown Source)
  at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:381)
  at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:364)
  at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:143)
  at org.jsoup.helper.HttpConnection.get(HttpConnection.java:132)
  at app.ForumCrawler.crawl(ForumCrawler.java:50)
  at Main.main(Main.java:15)

我已经使用这部分代码来解析页面，因为我寻找像200,404等的响应。

String userAgent = "Mozilla/5.0 (jsoup)";
int timeout = 5 * 1000;
Document localDoc = null;
String url = "<url>";
Connection.Response response = Jsoup.connect(url).userAgent(userAgent).timeout(timeout).execute();
if(response.statusCode() == 200) {
    localDoc = Jsoup.parse(response.body());
    //do the stuff..
}

我遇到过，如果我们使用.get()代替.execute()我们可以摆脱SocketTimeoutException问题，但如果我使用.get()那么我就无法得到回应。

请建议我使用哪一个来摆脱SocketTimeoutException，并在尝试解析页面时获取response。

提前致谢。

Answer 1

我遇到过，如果我们使用.get（）而不是.execute（），我们可以摆脱SocketTimeoutException问题

正如您在帖子中的callstack中所看到的，get()方法在内部调用了execute()方法：

at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:381)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:364)
at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:143)<-- execute() called
at org.jsoup.helper.HttpConnection.get(HttpConnection.java:132)<-- ...from get().
at app.ForumCrawler.crawl(ForumCrawler.java:50)

所以你无法摆脱SocketTimeoutException。但是，您可以通过处理此异常来强化代码。

在Jsoup

1 个答案: