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Commit c7e9f38

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coderbruiscoderbruis
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添加优秀工具类demo
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‎JdkLearn/pom.xml‎

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<properties>
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<java.version>1.8</java.version>
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<!-- <caffeine.version>2.8.0</caffeine.version>-->
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</properties>
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<dependencies>
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<!-- <dependency>-->
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<!-- <groupId>com.github.ben-manes.caffeine</groupId>-->
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<!-- <artifactId>caffeine</artifactId>-->
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<!-- <version>${caffeine.version}</version>-->
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<!-- </dependency>-->
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<!-- <dependency>-->
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<!-- <groupId>com.github.ben-manes.caffeine</groupId>-->
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<!-- <artifactId>guava</artifactId>-->
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<!-- <version>${caffeine.version}</version>-->
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<!-- </dependency>-->
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<!-- <dependency>-->
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<!-- <groupId>com.github.ben-manes.caffeine</groupId>-->
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<!-- <artifactId>jcache</artifactId>-->
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<!-- <version>${caffeine.version}</version>-->
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<!-- </dependency>-->
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<!-- <dependency>-->
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<!-- <groupId>com.github.ben-manes.caffeine</groupId>-->
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<!-- <artifactId>simulator</artifactId>-->
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<!-- <version>${caffeine.version}</version>-->
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<!-- </dependency>-->
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<!-- netty -->
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<dependency>
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<groupId>io.netty</groupId>
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‎JdkLearn/src/main/java/com/learnjava/optimization/BeanCopierDemo.java‎

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package com.learnjava.optimization;
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import org.springframework.cglib.beans.BeanCopier;
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/**
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*
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* 经过测试，BeanCopier性能是BeanUtils10倍左右。
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*
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* BeanCopier拷贝速度快，性能瓶颈出现在创建BeanCopier实例的过程中。 所以，把创建过的BeanCopier实例放到缓存中，下次可以直接获取，提升性能：
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*
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*
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* @author lhy
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* @date 2021/7/21
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*/
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public class BeanCopierDemo {
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private static final BeanCopier BEAN_COPIER = BeanCopier.create(Person.class, PersonVo.class, false);
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public static void main(String[] args) {
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Person person = new Person("zs", "high School", 16, 177, 126);
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PersonVo vo = new PersonVo();
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BEAN_COPIER.copy(person, vo, null);
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System.out.println(vo);
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}
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public static class PersonVo {
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private String name;
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private String grade;
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private Integer age;
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private Integer height;
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private Integer weight;
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@Override
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public String toString() {
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return "PersonVo{" +
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"name='" + name + '\'' +
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", grade='" + grade + '\'' +
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", age=" + age +
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", height=" + height +
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", weight=" + weight +
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'}';
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public String getGrade() {
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return grade;
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}
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public void setGrade(String grade) {
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this.grade = grade;
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}
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public Integer getAge() {
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return age;
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}
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public void setAge(Integer age) {
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this.age = age;
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}
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public Integer getHeight() {
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return height;
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}
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public void setHeight(Integer height) {
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this.height = height;
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}
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public Integer getWeight() {
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return weight;
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}
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public void setWeight(Integer weight) {
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this.weight = weight;
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}
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}
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public static class Person {
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private String name;
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private String grade;
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private Integer age;
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private Integer height;
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private Integer weight;
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public Person(String name, String grade, Integer age, Integer height, Integer weight) {
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this.name = name;
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this.grade = grade;
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this.age = age;
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this.height = height;
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this.weight = weight;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public String getGrade() {
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return grade;
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}
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public void setGrade(String grade) {
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this.grade = grade;
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}
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public Integer getAge() {
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return age;
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}
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public void setAge(Integer age) {
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this.age = age;
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}
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public Integer getHeight() {
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return height;
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}
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public void setHeight(Integer height) {
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this.height = height;
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}
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public Integer getWeight() {
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return weight;
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}
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public void setWeight(Integer weight) {
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this.weight = weight;
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}
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}
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}
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‎JdkLearn/src/main/java/com/learnjava/optimization/OptimizeUtilDemo.java‎

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package com.learnjava.optimization;
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/**
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* 优化工具类例子
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*
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* @author lhy
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* @date 2021/7/20
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*/
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public class OptimizeUtilDemo {
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// 超快深拷贝工具类BeanCopier
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private BeanCopierDemo beanCopierDemo;
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// Caffeine Cache
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}

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