国产,亚洲,欧美997久久综合,大帝av在线一区二区三区

Article Tags

Home

Technical Articles

Java

How to create a simple web application in Java with Spring Boot

Install Java17, Maven, IDE and ensure networking; 2. Create a project through https://start.spring.io, select Maven, Java, SpringBoot3, add SpringWeb dependencies and generate a project; 3. Create HelloController class under the com.example.demo package, use @RestController and @GetMapping("/") to return "Hello,World!"; 4. Run the DemoApplication main class to start the built-in Tomcat server; 5. Visit http by the browser:

Aug 12, 2025 pm 01:37 PM

java

Solutions for failing to load SVG images using Glide and AndroidSVG

This document is intended to resolve the "onLoadFailed" issue encountered when loading SVG images using the Glide library and the AndroidSVG library. Help developers properly configure Glide to support SVG images by adding Glide's annotation processor, using GlideApp to replace Glide, and handling possible errors from placeholder images.

Aug 12, 2025 pm 01:30 PM

How does method synchronization function in Java?

AsynchronizedmethodinJavaensuresthreadsafetybyallowingonlyonethreadtoexecuteitatatimeonagivenobjectorclass;forinstancemethods,theintrinsiclockoftheobjectisacquiredbeforeentry,blockingotherthreadsuntilrelease,whileforstaticmethods,thelockisontheClasso

Aug 12, 2025 pm 01:24 PM

Challenges and optimization strategies for large-batch data retrieval of DynamoDB

This article discusses the challenges and optimization strategies for obtaining large-scale data from DynamoDB in depth. Given the data limit of 1MB for a single request and the inefficiency of Scan operations, it is not scalable to directly obtain hundreds of thousands of records. The article emphasizes the importance of understanding DynamoDB design philosophy, and proposes methods such as pagination, refined query, reevaluating business needs, combining other AWS services for data analysis or considering different database types to achieve efficient and scalable big data retrieval.

Aug 12, 2025 pm 01:24 PM

Use Selenium Grid 4 to run scripts on specified nodes

This document is intended to guide newbie Selenium Grid 4 to enable them to configure the Grid environment and to implement the need to run test scripts on specific nodes. By setting custom capabilities, you can precisely control where test cases are executed, thereby improving test efficiency and reliability.

Aug 12, 2025 pm 01:15 PM

How to properly close resources in Java 7 and beyond?

ThebestwaytoproperlycloseresourcesinJava7andlaterisusingthetry-with-resourcesstatement,whichautomaticallyclosesresourcesthatimplementAutoCloseableorCloseable,eliminatingmanualcleanupandreducingresourceleaks.

Aug 12, 2025 pm 01:06 PM

Solve the Maven dependency problem that the RestAssured type cannot be parsed in Eclipse

This article provides a detailed solution to the problem that the RestAssured type cannot be parsed in the Eclipse IDE. Despite the correct configuration of the POM file, this problem may still result in incomplete dependency downloads due to corruption of the local Maven repository or network issues. The core solution strategies include checking POM configuration, cleaning up local Maven repositories, and ensuring that the IDE is synchronized with the Maven project, aiming to help developers quickly recover project compilation and operation.

Aug 12, 2025 pm 12:57 PM

Spring Boot REST API Response Optimization: Avoid unnecessary relevance of data

This tutorial explores how to optimize JSON responses in Spring Boot RESTful API to avoid returning unnecessary associated entity data. In response to the data redundancy problem caused by JPA entity association, the article will introduce in detail how to use the @JsonIgnore annotation to exclude fields, and explore custom JSON serialization strategies to ensure that the API response only contains the core information required by the front-end, improving data transmission efficiency and security.

Aug 12, 2025 pm 12:42 PM

How to profile a Java application

Use appropriate tools (such as JFR JMC or async-profiler) to perform performance analysis of Java applications. 1. Select tools: Select JFR JMC (recommended by JDK11) or async-profiler according to the scenario; 2. Start record: Enable JFR through the command line or attach to the process using async-profiler script; 3. Analyze data: View CPU, memory, GC and thread situations in JMC, or generate flame graphs through async-profiler; 4. Pay attention to hotspot methods, object allocation, GC pressure, thread contention and I/O calls; 5. Follow best practices: analyze, warm up JVM in a real environment, reduce overhead, compare baselines and

Aug 12, 2025 pm 12:27 PM

java Performance analysis

Update Google Calendar with Service Account: Resolve 403 Forbidden Error

This article explores the common 403 Forbidden errors when updating user calendars with Google Services accounts and provides detailed solutions. The core content includes understanding the relationship between service accounts and calendar access rights, correctly configuring domain-wide authorization (DWD), and distinguishing the restrictions of Google Workspace accounts from standard Gmail accounts when using service accounts. The article will also clarify the differences between OAuth 2.0 user authorization and service account authorization, helping developers effectively manage calendar events.

Aug 12, 2025 pm 12:15 PM

What is a LinkedList in Java?

LinkedList is a bidirectional linked list in Java, implementing List and Deque interfaces. It is suitable for scenarios where elements are frequently inserted and deleted. Especially when operating on both ends of the list, it has high efficiency, but the random access performance is poor and the time complexity is O(n). Insertion and delete can reach O(1) at known locations. Therefore, it is suitable for implementing stacks, queues, or situations where structures need to be dynamically modified, and is not suitable for read-intensive operations that frequently access by index. The final conclusion is that LinkedList is better than ArrayList when it is frequently modified but has fewer accesses.

Aug 12, 2025 pm 12:14 PM

java

Analysis and solution for data loss problem in Java methods

This article aims to solve the problem of data loss after Java methods are executed. Explain why data created or modified within a method "disappears" after the method is finished by explaining Java's parameter value transfer mechanism and local variable scope. The article provides solutions to effectively pass data through method return values, and comes with code examples to help developers build more robust programs.

Aug 12, 2025 pm 12:12 PM

How to properly configure Spring Boot to handle non-UTF-8 encoded requests

This article discusses the common garbled problems encountered by Spring Boot applications when handling non-UTF-8 (such as Windows-1252) encoding requests. The article first reveals the misunderstandings that may be caused by improper use of curl commands when simulating different encoding requests, and provides detailed steps to create and send correct encoding requests. Subsequently, the processing mechanism of character encoding by Spring Boot and its embedded Servlet container is analyzed, emphasizing the importance of Content-Type header. Finally, troubleshooting ideas and best practices to solve this type of problem are provided to ensure coding consistency between the client and the server.

Aug 12, 2025 pm 12:00 PM

Guide to Integration of CMake and Temurin JDK 8 in macOS Environment

This article aims to solve the common problem that CMake cannot correctly detect JNI libraries during the build process when using Temurin JDK 8 on macOS systems. Even if the JAVA_HOME environment variable is correctly configured, CMake's FindJNI module may still report an error. This tutorial will introduce in detail the overcoming of this obstacle by explicitly setting JNI-related inclusion paths and variables in CMake calls, ensuring that the project can compile and link the JNI interface smoothly, providing developers with a stable and reliable solution.

Aug 12, 2025 am 11:48 AM