Question

我正试图从这个网站获得一些信息：

http://www.131500.com.au/plan-your-trip/trip-planner?itd_name_origin=hurstville&itd_name_destination=town+hall

表结构是：

<td headers="header2">
    Take the Eastern Suburbs and Illawarra train (CityRail)                                 
    <br />
    <b>Dep: 12:35pm&nbsp; Hurstville Station Platform 3</b>
    <br />
    <b>Arr: 1:06pm&nbsp; Town Hall Station Platform 5, Sydney</b>
    <br />
</td>

我的代码：

import java.io.IOException;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.select.Elements;

import android.app.Activity;
import android.os.Bundle;

public class JsouptestActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    jsouptest();
}

public void jsouptest() {
    Document doc = null;
    try {
        doc = Jsoup
                .connect(
                        "http://www.131500.com.au/plan-your-trip/trip-planner?itd_name_origin=hurstville&itd_name_destination=town+hall")
                .get();
    } catch (IOException e) {
        Elements tables = doc.select("div#boxbody");
        System.out.println(tables.get(0).text().toString());
    }

}
}

我期待看到的内容：

Take the Eastern Suburbs and Illawarra train (CityRail)                                 

Dep: 12:35pm ; Hurstville Station Platform 3

Arr: 1:06pm ; Town Hall Station Platform 5, Sydney

我尝试过：

Elements tables = doc.select("div#boxbody table#dataTbl");

Elements tables = doc.select("div#boxbody table#dataTbl+widthcol2and3");

因为数据实际上在

<table class="dataTbl widthcol2and3" cellspacing="0" style="margin:0px ! important;border-right:0px none;" summary="Search Results Details">

所以我想我不能只使用它（dataTbl和widthcol2and3之间的空格）：

Elements tables = doc.select("div#boxbody table#dataTbl widthcol2and3");

所以我试过了：

Elements tables = doc.select("div#boxbody iewfix"); // and div#boxbody+iewfix

但每次我尝试在模拟器中运行测试应用程序时，我都会

The application has stopped unexpectedly. Please try again.

日志如下所示：

05-29 15:58:42.575: W/dalvikvm(755): threadid=3: thread exiting with uncaught exception     (group=0x4001b188)
05-29 15:58:42.575: E/AndroidRuntime(755): Uncaught handler: thread main exiting due to uncaught exception
05-29 15:58:42.585: E/AndroidRuntime(755): java.lang.NoClassDefFoundError: org.jsoup.Jsoup
05-29 15:58:42.585: E/AndroidRuntime(755):  at com.yeasiz.jsouptest.JsouptestActivity.jsouptest(JsouptestActivity.java:25)
05-29 15:58:42.585: E/AndroidRuntime(755):  at com.yeasiz.jsouptest.JsouptestActivity.onCreate(JsouptestActivity.java:18)
05-29 15:58:42.585: E/AndroidRuntime(755):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-29 15:58:42.585: E/AndroidRuntime(755):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
05-29 15:58:42.585: E/AndroidRuntime(755):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
05-29 15:58:42.585: E/AndroidRuntime(755):  at android.app.ActivityThread.access$2200(ActivityThread.java:119)
05-29 15:58:42.585: E/AndroidRuntime(755):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
05-29 15:58:42.585: E/AndroidRuntime(755):  at android.os.Handler.dispatchMessage(Handler.java:99)
05-29 15:58:42.585: E/AndroidRuntime(755):  at android.os.Looper.loop(Looper.java:123)
05-29 15:58:42.585: E/AndroidRuntime(755):  at        android.app.ActivityThread.main(ActivityThread.java:4363)
05-29 15:58:42.585: E/AndroidRuntime(755):  at    java.lang.reflect.Method.invokeNative(Native Method)
05-29 15:58:42.585: E/AndroidRuntime(755):  at java.lang.reflect.Method.invoke(Method.java:521)
05-29 15:58:42.585: E/AndroidRuntime(755):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
05-29 15:58:42.585: E/AndroidRuntime(755):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
05-29 15:58:42.585: E/AndroidRuntime(755):  at dalvik.system.NativeStart.main(Native Method)
05-29 15:58:42.595: I/dalvikvm(755): threadid=7: reacting to signal 3
05-29 15:58:42.595: E/dalvikvm(755): Unable to open stack trace file '/data/anr/traces.txt':      Permission denied

似乎jsoup找不到合适的班级。

我认为我的选择器语法是错误的，但我看看Use selector-syntax to find elements，我仍然无法解决这个问题。

请帮我解决这个问题。

Answer 1

你得到什么例外，在哪一行？

对于初学者，你不要在catch（）中执行此操作：

org.jsoup.select.Elements tables = doc.select("div#boxbody");
System.out.println(tables.get(0).text().toString());

只有在连接过程中出现错误时才会执行，如果有错误，那么doc此时将始终为null。

其次，您提供的代码在我尝试时抛出连接超时异常。试试这个（适合我）：

Document doc = null;
InputStream is = null;
String url = "http://www.131500.com.au/plan-your-trip/trip-planner?itd_name_origin=hurstville&itd_name_destination=town+hall";
is =new URL(url).openStream();
doc = org.jsoup.Jsoup.parse(is , "utf-8", url);
is.close();

另外，你尝试按id选择元素：“div＃boxbody”，其中“boxbody”是类名的一部分。我打开了你提供的链接，并且有多个div元素，类名包含单词“boxbody”，并且它不是类的全名。我认为你感兴趣的课程名称是“boxbody iewfix”。也许它会起作用，但我注意到有时Jsoup对空格做出奇怪的反应（getElementsByClass（“boxbody iewfix”）对我来说不起作用）。

我不喜欢选择，我在使用它时通常犯了太多错误，所以我会这样做：

Elements tables = doc.getElementsByAttributeValueStarting("class", "boxbody"); //I checked, it works

然后

tables.get(2).text(); // because the you're interested in third element which class name starts with "boxbody"

它将返回：

“模式详情乘坐东部郊区和Illawarra火车（CityRail）Dep：下午5:05 Hurstville Station Platform 3 Arr：5:31 pm Town Hall Station Platform 5，Sydney地图此行程路线图其他时间”

Answer 2

那会给你你所期望的。

Elements lines = doc.select("td[headers=header2]");
String linesToStr = lines.text();
String[] linestoStrArray = linesToStr.split("\n");

for (String line : linesToStrArray)
    System.out.println(line + "\n");

Android Jsoup select（）错误

2 个答案: