如何解决jsoup错误：无法找到请求目标的有效证书路径 [英] how to resolve jsoup error: unable to find valid certification path to requested target

问题描述

我正在尝试解析以下网址的html：

https://www.smuc.ac.kr/mbs/smuc/jsp/board/list.jsp?boardId=6993& ; id = smuc_040100000000

我收到以下错误：

  sun.security.validator.ValidatorException：PKIX路径构建失败：sun.security.provider.certpath.SunCertPathBuilderException：无法在sun.security.validator.PKIXValidator上找到请求目标
的有效证书路径。 doBuild（PKIXValidator.java:387）
 at sun.security.validator.PKIXValidator.engineValidate（PKIXValidator.java:292) 
 at sun.security.validator.Validator.validate（Validator.java:260） 
 at sun.security.ssl.X509TrustManagerImpl.validate（X509TrustManagerImpl.java:324）
 at sun.security.ssl.X509TrustManagerImpl.checkTrusted（X509TrustManagerImpl.java:229）
 at sun.secur ity.ssl.X509TrustManagerImpl.checkServerTrusted（X509TrustManagerImpl.java:124）
 at sun.security.ssl.ClientHandshaker.serverCertificate（ClientHandshaker.java:1491) 
 ... 15更多
引起的：sun.security.provider.certpath.SunCertPathBuilderException：无法在sun.security.provider.certpath.SunCertPathBuilder.build（SunCertPathBuilder.java:141）
 sun处找到请求目标
的有效证书路径。 security.provider.certpath.SunCertPathBuilder.engineBuild（SunCertPathBuilder.java:126）
 at java.security.cert.CertPathBuilder.build（CertPathBuilder.java:280）
 at sun.security.validator.PKIXValidator。 doBuild（PKIXValidator.java:382）
 ... 21更多
  

这是我的代码：

 公共类MainActivity扩展AppCompatActivity {
 private ListView listView; 
 private TextView textView; 
 public ArrayList< String> arrayList = new ArrayList< String>（）; 
 private ArrayAdapter< String> arrayAdapter; 
 
 @Override 
 protected void onCreate（Bundle savedInstanceState）{
 super.onCreate（savedInstanceState）; 
 setContentView（R.layout.activity_main）; 
 listView =（ListView）findViewById（R.id.listView）; 
 new Insert（）。execute（）; 
 arrayAdapter = new ArrayAdapter< String>（MainActivity.this，R.layout.list_ok，R.id.text，arrayList）; 
} 
 
 class Insert extends AsyncTask< String，Void，String> {
 @Override 
 protected String doInBackground（String ... params）{
 try {
 // Connection.Response res = Jsoup.connect（https：// www。 smuc.ac.kr/mbs/smuc/index.jsp）
 // .method（Connection.Method.POST）
 // .execute（）; 
文档文档= Jsoup.connect（https://www.smuc.ac.kr/mbs/smuc/jsp/board/list.jsp?boardId=6993&id=smuc_040100000000）。get（）; 
 Elements elements = document.select（。tit）; 
 arrayList.clear（）; 
 for（元素元素：元素）{
 arrayList.add（element.text（））; 
} 
} catch（IOException e）{
 e.printStackTrace（）; 
} 
返回null; 
} 
 @Override 
 protected void onPostExecute（String result）{
 listView.setAdapter（arrayAdapter）; 
} 
 
} 
 
} 
  

validateTLSCertificates（false）：

 文档文档= Jsoup.connect（URL）。timeout（10000）.validateTLSCertificates（false）.get（）; 
  

由于读取页面也需要一段时间，因此增加超时 timeout（ 10000）。

I am trying to parse the html of the following URL:

https://www.smuc.ac.kr/mbs/smuc/jsp/board/list.jsp?boardId=6993&id=smuc_040100000000

I'm getting the following error:

sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387)
    at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292)
    at sun.security.validator.Validator.validate(Validator.java:260)
    at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)
    at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229)
    at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124)
    at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1491)
    ... 15 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
    at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
    at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
    at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:382)
    ... 21 more

This is my code:

public class MainActivity extends AppCompatActivity {
    private ListView listView;
    private TextView textView;
    public ArrayList<String> arrayList = new ArrayList<String>();
    private ArrayAdapter<String> arrayAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listView = (ListView) findViewById(R.id.listView);
        new Insert().execute();
        arrayAdapter = new ArrayAdapter<String>(MainActivity.this, R.layout.list_ok, R.id.text, arrayList );
       }

    class Insert extends AsyncTask<String, Void, String> {
        @Override
        protected String doInBackground(String... params) {
            try {
               // Connection.Response res = Jsoup.connect("https://www.smuc.ac.kr/mbs/smuc/index.jsp")
               //         .method(Connection.Method.POST)
               //         .execute();
                Document document = Jsoup.connect("https://www.smuc.ac.kr/mbs/smuc/jsp/board/list.jsp?boardId=6993&id=smuc_040100000000").get();
                Elements elements = document.select(".tit");
                arrayList.clear();
                for (Element element : elements) {
                    arrayList.add(element.text());
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }
        @Override
        protected void onPostExecute(String result){
            listView.setAdapter(arrayAdapter);
        }

    }

}

解决方案

You can ignore TSL validation, set validateTLSCertificates(false):

Document document = Jsoup.connect("URL").timeout(10000).validateTLSCertificates(false).get();

Since the reading the page also takes a while, increase the timeout timeout(10000).

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