HTTP Status 400 – Bad Request is a common error message that users may encounter when browsing the web. This error occurs when the server cannot or will not process the request due to something that is perceived to be a client error. In this case, the error message specifically states that there is an invalid character found in the request target, and that the valid characters are defined in RFC 7230 and RFC 3986.
When a user receives a HTTP Status 400 – Bad Request error, it means that there is an issue with the request that was sent to the server. This could be due to a variety of reasons, such as malformed request syntax, invalid request message framing, or deceptive request routing. In the case of the specific exception report mentioned, the error is caused by an invalid character found in the request target [/news/detail/pt/N20Aenn0mP;jsessionid%5Cu003d4E37A09737F2D8A2BE96E84F1D29251F.app09?category\u003dEduca%C3%A7%C3%A3o_e_Desporto ].
The exception report also provides a stack trace that shows where the error occurred in the server code. In this case, the error is being thrown by the java.lang.IllegalArgumentException class, specifically in the Http11InputBuffer.parseRequestLine method of the org.apache.coyote.http11 package. This information can be helpful for developers and server administrators to troubleshoot and fix the issue.
It is important to note that the full stack trace of the root cause is usually available in the server logs. This can provide more detailed information about the error and help in diagnosing the problem. In this case, the error is likely related to the request target containing invalid characters that do not comply with the standards set by RFC 7230 and RFC 3986.
Apache Tomcat is mentioned in the exception report, indicating that the error occurred on a server running the Apache Tomcat web server software. Apache Tomcat is a popular open-source web server and servlet container that is used to serve Java-based web applications. It is important for server administrators to ensure that their server configurations are set up correctly to avoid issues such as HTTP Status 400 – Bad Request errors.
In conclusion, HTTP Status 400 – Bad Request errors can be frustrating for users, but they are usually caused by client-side issues with the request being sent to the server. By understanding the error message and the possible reasons for its occurrence, developers and server administrators can work towards resolving the issue and providing a better user experience for their website visitors.