java 使用xml和java注释的Spring配置

Posted 2021-05-08

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

<context:annotation-config />
<context:component-scan base-package="com.pluralsight" />

</beans>

// Can have three way to do the wiring, field, constructor and setter

package com.pluralsight.service;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.pluralsight.model.Customer;
import com.pluralsight.repository.CustomerRepository;

@Service("customerService")
public class CustomerServiceImpl implements CustomerService {
	
//	@Autowired
	private CustomerRepository customerRepository;
	
	@Autowired
	public CustomerServiceImpl(CustomerRepository customerRepository){
		this.customerRepository = customerRepository;
	}
	
	@Override
	public List<Customer> findAll(){
		return customerRepository.findAll();
	}

//	@Autowired
	public void setCustomerRepository(CustomerRepository customerRepository) {
		this.customerRepository = customerRepository;
	}
	
	
}

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.pluralsight.service.CustomerService;

public class Application {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
//		CustomerService service = new CustomerServiceImpl();
		
		ApplicationContext appContext = new ClassPathXmlApplicationContext("applicationContext.xml");
		
		CustomerService service = appContext.getBean("customerService", CustomerService.class);
		
		System.out.println(service.findAll().get(0).getFirstName());
	}

}