Article directory Exception information reason Solution Plan 0 plan 1 Insert image description here Exception information Failed to start bean ‘documentationPluginsBootstrapper’; nested exception is java.lang.NullPointerException 2023-11-10 11:21:44.013 ERROR 44100 — [o-8080-Acceptor] org.apache.tomcat.util.net.Acceptor : Socket accept failed java.nio.channels.AsynchronousCloseException: null at java.base/java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:202) ~[na:na] at java.base/sun.nio.ch.ServerSocketChannelImpl.end(ServerSocketChannelImpl.java:269) ~[na:na] at java.base/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:288) ~[na:na] at org.apache.tomcat.util.net.NioEndpoint.serverSocketAccept(NioEndpoint.java:547) ~[tomcat-embed-core-9.0.68.jar:9.0.68] at org.apache.tomcat.util.net.NioEndpoint.serverSocketAccept(NioEndpoint.java:79) ~[tomcat-embed-core-9.0.68.jar:9.0.68] at org.apache.tomcat.util.net.Acceptor.run(Acceptor.java:129) […]
Tag: exception
Analysis of anonymous mapping page fault exception in Linux kernel virtual memory management
Before explaining the anonymous mapping page fault exception, we must first understand what is an anonymous page? Corresponding to the anonymous page is the file page. We should understand the file page well, which is the page that maps the file, such as mapping the file to the virtual memory through mmap and then reading […]
Attack and utilization techniques of overflow vulnerabilities in exception handling – Part 1
This article focuses on the exception handling corresponding to C++ under Linux, that is, the study of attack methods for the unwind exception handling process based on eh_frame. Since there are certain differences in the exception handling process and underlying implementation in different operating systems and languages, specific issues need to be dealt with on […]
Will java try catch continue execution after exception?
1. There is a try-catch statement block, and throw is in the catch statement block. Then the subsequent code of the line of code that causes the exception (error report) in the try statement block will not be executed, and the code after the catch statement block will not be executed (in case of Except […]
Springboot integrates redis, mybatis-plus and websocket exception framework code encapsulation
In the process of software development, a well-encapsulated, concise and elegant Family Bucket framework can greatly improve the work efficiency of developers, while also reducing the complexity of the code and making it easier to maintain in the future. The source code involved in this article is at the end of the article, with a […]
OpenHarmony 4.0 Release compilation exception handling
1. Environment configuration Compilation environment: Ubuntu 20.04 OpenHarmony software version: 4.0 Release Equipment platform: rk3568 2. Drop-down code Refer to the official website for steps: OpenHarmony 4.0 Release source code acquisition repo init -u https://gitee.com/openharmony/manifest -b OpenHarmony-4.0-Release –no-repo-verify repo sync -c repo forall -c ‘git lfs pull’ 3. Compile code Refer to the official website […]
Solving errors in web projects, java.io.FileNotFoundException: druid.properties (the system cannot find the specified file); [spring factory decoupling development]
When using Tomcat9.0, spring5.0 framework original factory class decoupling, druid-1.0.9jar version, JDK9, MSQL8 version database to simulate web page login case, an error message that the druid.properties file cannot be found appears, the details are as follows [Case code posted at the end]; Normally speaking, the configuration file is placed under the src directory, and […]
Brief description of SpringBoot exception handling mechanism
SpringBoot exception handling mechanism 1. Basic introduction Spring Boot provides a powerful exception handling mechanism, allowing developers to capture and handle various exceptions that occur in applications to provide more friendly error messages or perform appropriate error handling operations. The following is a brief introduction to the Spring Boot exception handling mechanism: @ControllerAdvice: @ControllerAdvice is […]
“Ideas of optimizing interface design” series: Part 5 – How to handle exceptions in the interface in a unified manner
Series article navigation Part 1 – Some twists and turns of interface parameters Part 2-Design and Implementation of Interface User Context Part 3 – Leaving traces of the user calling the interface Part 4-Permission Control of Interfaces Part 5 – How to handle exceptions in the interface in a unified manner Part 6 – Some […]
Android file upload error java.net.SocketTimeoutException: timeout
//Upload data public void upload_Data(String jsons) {<!– –> // String categoryNo = “”; // String CategoryName = “”; // String location_no = “”; // JSONObject jsonObject = new JSONObject(); // jsonObject.put(“userNo”, “003”); // jsonObject.put(“categoryNo”, “”); // jsonObject.put(“categoryName”, “”); // jsonObject.put(“locationName”, “Guangzhou”); // String json = “”; showProgressDialog(“Prompt”, “Uploading, please wait…”); // System.out.println(“Test jsons:” + jsons); […]