spring ioc---参数注入-白红宇

spring ioc---参数注入

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发布时间：2019-06-08

本文共 4773 字，大约阅读时间需要 15 分钟。

注入参数：

1，基本类型值；

2，注入bean；

3，内部bean；

4，null 值；

5，级联属性；

6，集合类型属性；

package entity;public class Dog {    private String name;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    }

package entity;import java.util.ArrayList;import java.util.HashMap;import java.util.HashSet;import java.util.List;import java.util.Map;import java.util.Properties;import java.util.Set;public class People {    private int id;    private String name;    private int age;    private Dog dog;   //级联属性    private List
     
       hobbies=new ArrayList
      
       ();    private Set
       
         loves=new HashSet
        
         ();    private Map
         
           works=new HashMap
          
           (); private Properties addresses=new Properties(); public People() { super(); // TODO Auto-generated constructor stub } public People(int id, String name, int age) { super(); this.id = id; this.name = name; this.age = age; } public Set
           
             getLoves() { return loves; } public void setLoves(Set
            
              loves) { this.loves = loves; } public List
             
               getHobbies() { return hobbies; } public void setHobbies(List
              
                hobbies) { this.hobbies = hobbies; } public Map
               
                 getWorks() { return works; } public void setWorks(Map
                
                  works) { this.works = works; } public Properties getAddresses() { return addresses; } public void setAddresses(Properties addresses) { this.addresses = addresses; } public Dog getDog() { return dog; } public void setDog(Dog dog) { this.dog = dog; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } @Override public String toString() { return "People [id=" + id + ", name=" + name + ", age=" + age + ", dog=" + dog + ", hobbies=" + hobbies + ", loves=" + loves + ", works=" + works + ", addresses=" + addresses + "]"; } }

package test;import org.junit.Before;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import entity.People;public class T {    private ApplicationContext ac;    @Before    public void setUp() throws Exception {        ac=new ClassPathXmlApplicationContext("beans.xml");    }    // 基本类型值    @Test    public void test1() {        People people=(People)ac.getBean("people1");        System.out.println(people);    }        // 注入bean    @Test    public void test2() {        People people=(People)ac.getBean("people2");        System.out.println(people);    }        // 内部bean    @Test    public void test3() {        People people=(People)ac.getBean("people3");        System.out.println(people);    }        // 注入null    @Test    public void test4() {        People people=(People)ac.getBean("people4");        System.out.println(people);    }        // 级联属性    @Test    public void test5() {        People people=(People)ac.getBean("people5");        System.out.println(people);    }        // 注入集合    @Test    public void test6() {        People people=(People)ac.getBean("people6");        System.out.println(people);    }}