spring框架构造方法注入

在resources里面新建applicationContext.xml

配置如下：

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd"> <!--构造方法注入--> <bean id="book1" class="com.ssz.entity.Book"> <constructor-arg name="name" value="张三三"/> </bean> <bean id="book2" class="com.ssz.entity.Book"> <constructor-arg name="id" value="50"/> <constructor-arg name="name" value="李思思"/> </bean> <!--setter方法注入--> <bean id="book3" class="com.ssz.entity.Book" scope="prototype"> <property name="id" value="100"/> <property name="name" value="王五五"/> <property name="price" value="30"/> </bean> <!--setter方法注入+ 集合setter方法注入--> <bean id="book4" class="com.ssz.entity.Book" scope="prototype"> <property name="id" value="200"/> <property name="name" value="赵六六"/> <property name="price" value="40.08"/> <property name="address"> <array> <value>郑州市</value> <value>开封市</value> <value>南阳市</value> <value>洛阳市</value> </array> </property> </bean> <!--User类--> <bean id="user" class="com.ssz.entity.User" destroy-method="close" init-method="init" > <property name="id" value="001"/> <property name="name" value="王九九"/> <property name="age" value="26"/> <property name="address" value="河南省郑州市"/> </bean> <bean id="user2" class="com.ssz.entity.User"> <property name="id" value="002"/> <property name="name" value="孙十十"/> <property name="age" value="33"/> <property name="address" value="河南省开封市"/> </bean> <!--setter方法注入+ array注入--> <bean id="book5" class="com.ssz.entity.Book" scope="prototype"> <property name="id" value="300"/> <property name="name" value="孙七七"/> <property name="price" value="60"/> <property name="address"> <array> <value>郑州市</value> <value>开封市</value> <value>南阳市</value> <value>洛阳市</value> </array> </property> </bean> <!--setter方法注入+ array注入 + list + map + set + Properties 集合--> <bean id="book6" class="com.ssz.entity.Book"> <property name="id" value="400"/> <property name="name" value="钱八八"/> <property name="price" value="70"/> <property name="address"> <!--array--> <array> <value>郑州市</value> <value>开封市</value> <value>南阳市</value> <value>洛阳市</value> </array> </property> <!--list--> <property name="list"> <list> <value>10</value> <value>100</value> <value>1000</value> </list> </property> <property name="user" ref="user2"> </property> <!--map--> <property name="map"> <map> <entry key="u1" value-ref="user"/> <entry key="u2" value-ref="user"/> </map> </property> <!--set--> <property name="set"> <set> <value>java</value> <value>C语言</value> <value>C++</value> <value>PHP</value> </set> </property> <!--Properties 集合--> <property name="pro"> <props> <prop key="k1">pt1</prop> <prop key="k2">pt1</prop> <prop key="k3">pt1</prop> <prop key="k4">pt1</prop> </props> </property> </bean></beans>

lombok依赖

<dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.16.18</version> <scope>provided</scope> </dependency>

创建测试类

package com.ssz;import com.ssz.entity.Book;import org.junit.Test;import org.springframework.beans.factory.BeanFactory;import org.springframework.context.support.ClassPathXmlApplicationContext;import java.util.List;public class Demo { @Test public void tt(){ BeanFactory bf=new ClassPathXmlApplicationContext("applicationContext.xml");//建立bean工厂 //Book book1=bf.getBean("book2",Book.class);// Book book1=bf.getBean(Book.class); //Book book2=bf.getBean("book3",Book.class); //Book book2=bf.getBean(Book.class);// Book b=bf.getBean("book",Book.class);// book.setId(100);// book.setName("C语言入门"); //System.out.println(book1.getPrice()); //System.out.println(book2); //System.out.println(book1==book2);// System.out.println(book1);// Book bk1=bf.getBean("book4",Book.class);// Book bk2=bf.getBean("book4",Book.class);// Book bk3=bf.getBean("book4",Book.class);// System.out.println(bk1==bk2);// System.out.println(bk1==bk3);// System.out.println(bk2==bk3);// Book book1=bf.getBean("book6",Book.class);// System.out.println(book1);// for (String addr:book1.getAddress()){// System.out.println(addr);// } Book book=bf.getBean("book5",Book.class); System.out.println(book); } @Test public void bb(){// BeanFactory bf1=new ClassPathXmlApplicationContext("applicationContext.xml"); ClassPathXmlApplicationContext bf1=new ClassPathXmlApplicationContext("applicationContext.xml"); Book bk=bf1.getBean("book6",Book.class); System.out.println(bk.getMap()); System.out.println(bk.getPro().getProperty("k1")); for (Integer i: bk.getList()){ System.out.println(i); } bf1.close(); }}

 

转载于:https://www.cnblogs.com/fqszywz/p/7498052.html