What are the methods of creating a factory in Spring framework development IOC
This article will share with you about the Spring framework development IOC factory creation method. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.
1.IOC has two ways to create a factory
There are two ways for IoC to create bean through factory mode: static factory method, instance factory method.
two。 Different 2.1 static method creation of the two methods
You can instantiate an object directly through a static method, using the class name. Created by the method name
Public class HelloFactory {public static HelloWorld getInstance () {return new Hello ();}} HelloWorldFactory.getInstance (); 2.2 instance method creation
Using new to open up in heap memory
Public class Hello {public HelloWorld createHelloWorld () {return new Hello ();}} Hello helloF = new Hello (); hello.createHelloWorld (); static factory method package entity;import lombok.AllArgsConstructor;import lombok.Data;import lombok.NoArgsConstructor;@Data@AllArgsConstructor@NoArgsConstructorpublic class Car {private long id; private String name;} package factory;import entity.Car;import java.util.HashMap;import java.util.Map;public class StaticCarFactory {private static Map carMap; static {carMap = new HashMap () CarMap.put (1L xml new Car (1L, "Baodi"); carMap.put (2L Car new Car (2L, "Mercedes-Benz"));} public static Car getCar (long id) {return carMap.get (id);}} xml profile instance factory creation package factory;import entity.Car;import java.util.HashMap;import java.util.Map;public class InstanceCarFactory {private Map carMap; public InstanceCarFactory () {carMap = new HashMap (); carMap.put (1LMagneNew Car (1L, "Bao Yi")) CarMap.put (2L long id new Car (2L, "Mercedes-Benz");} public Car getCar (long id) {return carMap.get (id);}} xml configuration file thank you for reading! This is the end of this article on "what are the methods for developing IOC factories in Spring framework development?". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it out for more people to see!
