代码如下：
String url="http://www.nhc.gov.cn/xcs/yqtb/202101/8011b21e1b874eee80020a585db487d7.shtml";
try {
Connection connect = Jsoup.connect(url).userAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36");
Document document = connect.get();
Elements select = document.select("div .con");
System.out.println(select.text());
}catch (Exception e){
e.printStackTrace();
}异常如下：
org.jsoup.HttpStatusException: HTTP error fetching URL. Status=412, URL=http://www.nhc.gov.cn/xcs/yqtb/202101/8011b21e1b874eee80020a585db487d7.shtml
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:776)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:722)
at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:306)
at org.jsoup.helper.HttpConnection.get(HttpConnection.java:295)
at test.test5(test.java:78)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
很明显啊，访问这个页面需要什么参数，但你没有携带
我也遇到了此问题，各位大神如何解决呢？
那怎么知道这个页面需要什么参数呢