Spring4-注入值到集合类型

Posted 2020-09-06

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1.创建Maven项目,项目名称springdemo27,如图所示

2.配置Maven,修改项目中的pom.xml文件,修改内容如下

<project xmlns="http://maven.apache.org/POM/4.0.0" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>1.0.0</modelVersion>
  <groupId>shequ</groupId>
  <artifactId>springdemo13</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  
  <properties>
  	<java.version>1.7</java.version>
  	<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  	<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  </properties>
  
  <repositories>
  	<repository>
  		<id>codelds</id>
  		<url>https://code.lds.org/nexus/content/groups/main-repo</url>
  	</repository>
  </repositories>
  
  <dependencies>
  	<dependency>
  		<groupId>junit</groupId>
  		<artifactId>junit</artifactId>
  		<version>4.10</version>
  	</dependency>
  	
  	<dependency>
  		<groupId>org.springframework</groupId>
  		<artifactId>spring-core</artifactId>
  		<version>4.1.4.RELEASE</version>
  	</dependency>
  	
  	<dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.1.4.RELEASE</version>
    </dependency>
    
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>4.1.4.RELEASE</version>
    </dependency>
    
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.34</version>
    </dependency>
       
  </dependencies>
  <build/>
</project>

3.在src/main/java下创建实体Bean Forum,包名(com.mycompany.shequ.bean)如图所示

4.实体Bean Forum的内容如下

package com.mycompany.shequ.bean;

import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

public class Forum {
	private int fid;
	private String name;
	private List<Object> lists;
	private Set<Object> sets;
	private Map<Object,Object> maps;
	private Properties pros;
	public int getFid() {
		return fid;
	}
	public void setFid(int fid) {
		this.fid = fid;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public List<Object> getLists() {
		return lists;
	}
	public void setLists(List<Object> lists) {
		this.lists = lists;
	}
	public Set<Object> getSets() {
		return sets;
	}
	public void setSets(Set<Object> sets) {
		this.sets = sets;
	}
	public Map<Object, Object> getMaps() {
		return maps;
	}
	public void setMaps(Map<Object, Object> maps) {
		this.maps = maps;
	}
	public Properties getPros() {
		return pros;
	}
	public void setPros(Properties pros) {
		this.pros = pros;
	}
	@Override
	public String toString() {
		return "{fid=>"+this.fid+",name=>"+this.name+"}";
	}
}

5.在src/main/java下创建实体Bean ForumPost,包名(com.mycompany.shequ.bean)如图所示

6.实体Bean ForumPost的内容如下

package com.mycompany.shequ.bean;

public class ForumPost {
	private int pid;
	private String name;

	public int getPid() {
		return pid;
	}
	public void setPid(int pid) {
		this.pid = pid;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	@Override
	public String toString() {
		return "{pid=>"+this.pid+",name=>"+this.name+"}";
	}
}

7.在src/main/resources下创建spring-bean.xml配置文件,如图所示

8.spring-bean.xml配置文件的内容如下

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">

	<bean id="forum" class="com.mycompany.shequ.bean.Forum">
		<property name="fid" value="1"></property>
		<property name="name" value="集合"></property>
		<property name="lists">
			<list>
				<value>1</value>
				<ref bean="forumpost"/>
				<bean class="com.mycompany.shequ.bean.ForumPost">
					<property name="pid" value="1"></property>
					<property name="name" value="list"></property>
				</bean>
			</list>
		</property>
		
		<property name="sets">
			<set>
				<value>1</value>
				<ref bean="forumpost"/>
				<bean class="com.mycompany.shequ.bean.ForumPost">
					<property name="pid" value="2"></property>
					<property name="name" value="set"></property>
				</bean>
			</set>
		</property>
		
		<property name="maps">
			<map>
				<entry key="key1" value="1"></entry>
				<entry key="key2" value-ref="forumpost"></entry>
				<entry key="key3">
					<bean class="com.mycompany.shequ.bean.ForumPost">
						<property name="pid" value="3"></property>
						<property name="name" value="map"></property>
					</bean>
				</entry>
			</map>
		</property>
		
		<property name="pros">
			<props>
				<prop key="key1">props1</prop>
				<prop key="key2">props2</prop>
			</props>
		</property>
	</bean>
	
	<bean id="forumpost" class="com.mycompany.shequ.bean.ForumPost">
		<property name="pid" value="2"></property>
		<property name="name" value="prototype"></property>
	</bean>

</beans>

9.在src/main/resources下创建核心配置文件applicationContext.xml,如图所示

10.核心配置文件applicationContext.xml的内容如下

<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-4.0.xsd">

	<import resource="bean/spring-bean.xml"/>

</beans>

11.在src/test/java下创建测试文件AppTest,包名(com.mycompany.shequ.test)如图所示

12.测试文件AppTest的内容如下

package com.mycompany.shequ.test;

import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;

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

import com.mycompany.shequ.bean.Forum;

public class AppTest {
	
	@Test
	public void beanTest(){
	    ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
		Forum forum = (Forum) context.getBean("forum");
		
		List<Object> lists = forum.getLists();
		for (Object object : lists) {
			System.out.println(object);
		}
		
		System.out.println("----------------------------------------------");
		
		Set<Object> sets = forum.getSets();
		for (Object object : sets) {
			System.out.println(object);
		}
		
		System.out.println("----------------------------------------------");
		
		Map<Object,Object> maps = forum.getMaps();
		for(Map.Entry<Object,Object> entry:maps.entrySet()){
			System.out.println(entry.getKey()+"=>"+entry.getValue());
		}
		
		System.out.println("----------------------------------------------");
		
		Properties pros = forum.getPros();
		Iterator it = pros.entrySet().iterator();
		while(it.hasNext()){
			Map.Entry entry = (Entry) it.next();
			System.out.println(entry.getKey()+"=>"+entry.getValue());
		}
	}
}

13.在测试类AppTest的beanTest方法上右键运行,输出结果如图所示

本文出自 “素颜” 博客，请务必保留此出处http://suyanzhu.blog.51cto.com/8050189/1909911

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