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Catalogue of Series Articles I. Array Type Solution Method I: Dichotomy 2. Array Type Solution Method 2: Double Pointer Method 3. Array Type Solution Method 3: Sliding Window IV. Array Type Solution Method 4: Simulation V. Basic Operation and Classical Title of Chain List in Chain Table Text 6. Classic Title of Hash Table 7. Classic Title ...

What is OpenFeign Feign is a declarative Web service client that, in other words, lets you invoke a web service as easily as a method. What can Feign do Feign is designed to make writing Java Http clients easier. Previously, when Ribbon+RestTemplate was used, the encapsulation of http requests using RestTemplate formed a set of templated ...

Condition true is returned if the condition is met, and false is returned if the condition is not met @FunctionalInterface public interface Condition { boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata); } Several sub interfaces and classes Condition has several sub interfaces and classes, and its functions are exte ...

Basic Java syntax (2) The wood that embraces is born at the slightest; The nine storey platform starts from the tired soil; A journey of a thousand miles begins with a single step—— Tao Te Ching 10, Scanner class (user interaction data type) From Java 5 to Java util. Scanner is a package. We can get user input through s ...

For reference to source code analysis, please visit: https://gitee.com/lidishan/apollo-code-analysis Statement before reading: This article does not provide relevant usage instructions, but only analyzes the Apollo source code Apollo overall architecture diagram What is the core function of Apollo server? Configuration change and discovery C ...

1, Why use validator? Parameter verification is a very important step in the development process. If the front-end parameter verification is for user experience, the back-end parameter verification is for security. Have you ever done parameter verification? Judge one field by one. The disadvantages of this approach are obvious - code redundanc ...

Introduction to spring security Spring security is a security framework for spring projects. It is also the default technology type of the underlying security module of spring boot. It can realize powerful Web security control. For security control, it provides Authentication，to grant authorization and Protection against common attacks . It ...

Chapter 1 control inversion / dependency injection in Spring review Add, delete, modify and check. Pre class test: Contents of this chapter Spring: Spring IOC: give the power to create objects to the spring core container. Factory mode BeanFactory: lazy man ApplicationContext: hungry man < bean id="" name="" class="" scope="" > T ...

catalogue I What is the pointer II Pointer and pointer type 3. Field pointer 4. Pointer operation 5. Pointer and array 6. Secondary pointer 7. Pointer array I What is the pointer Understand pointer 1. Pointer is the number of the smallest unit in memory, that is, the address2. The pointer in spoken English usually refers to the p ...

UDP transport 1: Establish udp socket service 2: Receive data through receive method 3: Store the received data in the packet object 4: Analyze the received data through the function of packet object 5: Resources can be closed client /* Add feedback according to our normal thinking, but there is no response. Why The reas ...