Question

我正在尝试使用Jsoup库从URL解析HTML

但是当我进行调试时，我发现此异常抛出

>  12-09 08:48:09.741 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem 

W/System.err: java.lang.IllegalArgumentException: Header name must not be empty

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at org.jsoup.helper.Validate.notEmpty(Validate.java:102)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at org.jsoup.helper.HttpConnection$Base.header(HttpConnection.java:300)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at org.jsoup.helper.HttpConnection$Response.processResponseHeaders(HttpConnection.java:850)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at org.jsoup.helper.HttpConnection$Response.setupFromConnection(HttpConnection.java:785)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:577)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:548)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:235)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at org.jsoup.helper.HttpConnection.get(HttpConnection.java:224)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at com.example.virusmahmoudaidi.parkbookingsystem.Activities.FindEmptyPark$GetData.doInBackground(FindEmptyPark.java:474)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at com.example.virusmahmoudaidi.parkbookingsystem.Activities.FindEmptyPark$GetData.doInBackground(FindEmptyPark.java:459)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:287)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:234)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)

12-09 08:48:09.751 5188-5422/com.example.virusmahmoudaidi.parkbookingsystem W/System.err: at java.lang.Thread.run(Thread.java:856)

当编译器到达Jsoup HTML调用行时抛出此异常：-

 Document doc = Jsoup.connect(urls[0]).timeout(0).get();

我的HTML页面：-

<html> 
 <head> 
 <META charset='UTF-8' HTTP-EQUIV='refresh' CONTENT='5'/>

<title>Arduino Web Server</title>
</head>
<body style="background-color:#FF0000">

<h1>25</h1>
<br>
<h1>40</h1>
<br>
<h1>30</h1>
<br>
<h1>15</h1>
<br>
</body>
</html>

请提示...

Answer 1

此问题是由名称为“空”或空值引起的

最近，我刚刚开始我的jsoup开发并发现了这个问题。

在地图标题中

尝试先删除空名称标头：

headers.remove（“”）; headers.remove（null）;

如何解决java.lang.IllegalArgumentException：标题名称在JSOUP上不能为空

1 个答案: