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fumj
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1.threadlocal 使用
2.thread chapter1 3.策略模式
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‎designpatten/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>example</artifactId>
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<groupId>com.fumj</groupId>
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<version>0.0.1-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>designpatten</artifactId>
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<dependencies>
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<!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-api</artifactId>
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<version>5.3.1</version>
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<scope>test</scope>
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</dependency>
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<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context</artifactId>
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<version>5.2.1.RELEASE</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-core</artifactId>
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<version>5.2.1.RELEASE</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-beans</artifactId>
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<version>5.2.1.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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</dependency>
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<dependency>
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<groupId>cn.hutool</groupId>
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<artifactId>hutool-all</artifactId>
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</dependency>
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<dependency>
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<groupId>log4j</groupId>
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<artifactId>log4j</artifactId>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-log4j12</artifactId>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-api</artifactId>
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</dependency><dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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</dependency>
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</dependencies>
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</project>

‎designpatten/src/main/java/rdis/RedisLRU.java‎

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package rdis;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* @author fumj
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* @projectName example
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* @description: TODO
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* @date 2019/12/2517:43
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*/
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public class RedisLRU<k, v> {
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private int capacity;
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private int count;
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private Map<k, Node<k, v>> nodeMap;
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private Node<k, v> head;
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private Node<k, v> tail;
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public RedisLRU(int capacity) {
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if (capacity < 1) {
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throw new IllegalArgumentException(String.valueOf(capacity));
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}
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this.capacity = capacity;
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this.nodeMap = new HashMap<>();
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Node headNode = new Node(null,null);
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Node tailNode = new Node(null,null);
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headNode.next = tailNode;
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tailNode.pre = headNode;
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this.head = headNode;
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this.tail = tailNode;
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}
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public void put(k key,v value){
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Node<k,v> node = nodeMap.get(key);
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if(node == null) {
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if (count >= capacity) {
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removeNode();
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}
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node = new Node<>(key,value);
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addNode(node);
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}else {
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moveNodeToHead(node);
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}
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}
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public Node<k,v> get(k key){
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Node<k,v> node = nodeMap.get(key);
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if(node != null){
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moveNodeToHead(node);
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}
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return node;
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}
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public void removeNode(){
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Node node = tail.pre;
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removeFromList(node);
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nodeMap.remove(node.key);
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count--;
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}
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private void removeFromList(Node<k,v> node){
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Node pre = node.pre;
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Node next = node.next;
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pre.next = next;
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next.pre = pre;
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node.next = null;
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node.pre = null;
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}
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private void addNode(Node<k,v> node){
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addToHead(node);
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nodeMap.put(node.key,node);
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count++;
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}
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public void moveNodeToHead(Node<k,v> node){
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removeFromList(node);
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addToHead(node);
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}
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public void addToHead(Node<k,v> node){
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Node next = head.next;
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next.pre = node;
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node.next = next;
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node.pre = head;
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head.next = node;
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}
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class Node<k, v> {
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k key;
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v value;
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Node pre;
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Node next;
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public Node(k key,v value){
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this.key = key;
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this.value = value;
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}
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}
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}
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‎designpatten/src/main/java/singleton/Singleton.java‎

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package singleton;
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/**
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* @author fumj
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* @projectName credit
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* @description: TODO
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* @date 2019/6/2016:27
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*/
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public enum Singleton {
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INSTANCE;
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public void doSomething() {
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System.out.println("do =============");
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}
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}

‎designpatten/src/main/java/singleton/SingletonTest.java‎

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package singleton;
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/**
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* @author fumj
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* @projectName credit
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* @description: TODO
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* @date 2019/6/2016:28
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*/
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public class SingletonTest {
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public static void main(String[] args) {
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Singleton.INSTANCE.doSomething();
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}
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}

‎designpatten/src/main/java/strategy/EmailSlover.java‎

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package strategy;
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import lombok.extern.slf4j.Slf4j;
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/**
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* @author fumj
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* @projectName example
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* @description: TODO
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* @date 2019/12/2517:22
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*/
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@Slf4j
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public class EmailSlover extends ServerDealSlover {
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@Override
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public void slover(Long serverId, Long userId) {
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log.info("email slover");
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}
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@Override
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public String[] supports() {
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return new String[]{"EMAIL"};
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}
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}

‎designpatten/src/main/java/strategy/MessageSlover.java‎

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package strategy;
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import lombok.extern.slf4j.Slf4j;
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/**
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* @author fumj
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* @projectName example
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* @description: TODO
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* @date 2019/12/2517:25
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*/
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@Slf4j
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public class MessageSlover extends ServerDealSlover {
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@Override
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public void slover(Long serverId, Long userId) {
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log.info("message slover");
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}
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@Override
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public String[] supports() {
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return new String[]{"MESSAGE"};
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}
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}

‎designpatten/src/main/java/strategy/ServerDealSlover.java‎

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package strategy;
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/**
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* @author fumj
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* @projectName example
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* @description: TODO
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* @date 2019/12/2517:23
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*/
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public abstract class ServerDealSlover {
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public abstract void slover(Long serverId,Long userId);
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public abstract String[] supports();
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}

‎designpatten/src/main/java/strategy/ServerDealSloverChooser.java‎

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package strategy;
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import org.springframework.beans.BeansException;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.ApplicationContextAware;
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import javax.annotation.PostConstruct;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* @author fumj
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* @projectName example
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* @description: TODO
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* @date 2019/12/2517:27
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*/
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public class ServerDealSloverChooser implements ApplicationContextAware {
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private ApplicationContext applicationContext;
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@Override
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public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
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this.applicationContext = applicationContext;
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}
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private Map<String,ServerDealSlover> sloverMap = new HashMap<>();
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@PostConstruct
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private void register(){
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Map<String, ServerDealSlover> beansOfType = applicationContext.getBeansOfType(ServerDealSlover.class);
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sloverMap.putAll(beansOfType);
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}
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public ServerDealSlover chooser(String type){
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return sloverMap.get(type);
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}
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}

‎designpatten/src/main/java/strategy/ServerDealSloverChooserTest.java‎

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package strategy;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.beans.BeansException;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.ApplicationContextAware;
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import javax.annotation.PostConstruct;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* @author fumj
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* @projectName example
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* @description: TODO
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* @date 2019/12/2517:27
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*/
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@Slf4j
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public class ServerDealSloverChooserTest {
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public static void main(String[] args) {
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ServerDealSloverChooser chooser = new ServerDealSloverChooser();
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ServerDealSlover slover = chooser.chooser("MESSAGE");
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slover.slover(1L,1L);
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}
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}

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