|
| 1 | +# 在Spring中的源码分析 |
| 2 | + |
| 3 | +#### 例子 |
| 4 | + |
| 5 | +```xml |
| 6 | +<?xml version="1.0" encoding="UTF-8" ?> |
| 7 | +<beans xmlns="http://www.springframework.org/schema/beans" |
| 8 | + xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" |
| 9 | + xsi:schemaLocation="http://www.springframework.org/schema/beans |
| 10 | + http://www.springframework.org/schema/beans/spring-beans.xsd"> |
| 11 | + |
| 12 | + <bean id="id01" class="org.fade.pattern.cp.prototype.spring.Monster" scope="prototype" /> |
| 13 | + |
| 14 | +</beans> |
| 15 | +``` |
| 16 | + |
| 17 | +```java |
| 18 | +public class Monster { |
| 19 | + |
| 20 | + private Integer id = 10; |
| 21 | + |
| 22 | + private String nickName = "牛魔王"; |
| 23 | + |
| 24 | + private String skill = "芭蕉扇"; |
| 25 | + |
| 26 | + public Monster(){ |
| 27 | + |
| 28 | + } |
| 29 | + |
| 30 | + public Monster(Integer id, String nickName, String skill) { |
| 31 | + this.id = id; |
| 32 | + this.nickName = nickName; |
| 33 | + this.skill = skill; |
| 34 | + } |
| 35 | + |
| 36 | + public Integer getId() { |
| 37 | + return id; |
| 38 | + } |
| 39 | + |
| 40 | + public void setId(Integer id) { |
| 41 | + this.id = id; |
| 42 | + } |
| 43 | + |
| 44 | + public String getNickName() { |
| 45 | + return nickName; |
| 46 | + } |
| 47 | + |
| 48 | + public void setNickName(String nickName) { |
| 49 | + this.nickName = nickName; |
| 50 | + } |
| 51 | + |
| 52 | + public String getSkill() { |
| 53 | + return skill; |
| 54 | + } |
| 55 | + |
| 56 | + public void setSkill(String skill) { |
| 57 | + this.skill = skill; |
| 58 | + } |
| 59 | + |
| 60 | + @Override |
| 61 | + public String toString() { |
| 62 | + return "Monster{" + |
| 63 | + "id=" + id + |
| 64 | + ", nickName='" + nickName + '\'' + |
| 65 | + ", skill='" + skill + '\'' + |
| 66 | + '}'; |
| 67 | + } |
| 68 | + |
| 69 | +} |
| 70 | + |
| 71 | +public class Prototype { |
| 72 | + |
| 73 | + public static void main(String[] args) { |
| 74 | + ApplicationContext applicationContext = new FileSystemXmlApplicationContext(System.getProperty("user.dir") |
| 75 | + +"/src/main/java/org/fade/pattern/cp/prototype/spring/ApplicationContext.xml"); |
| 76 | + Object bean1 = applicationContext.getBean("id01"); |
| 77 | + System.out.println("bean1:"+bean1); |
| 78 | + Object bean2 = applicationContext.getBean("id01"); |
| 79 | + System.out.println("bean2:"+bean2); |
| 80 | + System.out.println(bean1==bean2); |
| 81 | + } |
| 82 | + |
| 83 | +} |
| 84 | +``` |
| 85 | + |
| 86 | +#### 运行结果 |
| 87 | + |
| 88 | +``` |
| 89 | +bean1:Monster{id=10, nickName='牛魔王', skill='芭蕉扇'} |
| 90 | +bean2:Monster{id=10, nickName='牛魔王', skill='芭蕉扇'} |
| 91 | +false |
| 92 | +``` |
| 93 | + |
| 94 | +#### [代码](../../../../../src/main/java/org/fade/pattern/cp/prototype/spring) |
| 95 | + |
| 96 | +#### DEBUG调试 |
| 97 | + |
| 98 | +1. ###### 单击图示处打上断点 |
| 99 | + |
| 100 | + |
| 101 | + |
| 102 | +2. ###### 右键点击图示1处,选择图示2处选项“Debug 'Prototype.main()'” |
| 103 | + |
| 104 | + |
| 105 | + |
| 106 | +3. ###### 等调试系统上线后,点击图示处选项“Step Into” |
| 107 | + |
| 108 | + |
| 109 | + |
| 110 | +4. ###### 再点击图示处选项“Step Over” |
| 111 | + |
| 112 | + |
| 113 | + |
| 114 | +5. ###### 当代码运行至下图所示时,再次点击选项“Step Into” |
| 115 | + |
| 116 | + |
| 117 | + |
| 118 | +6. ###### 当出现如下图所示内容时,点击“getBean” |
| 119 | + |
| 120 | + |
| 121 | + |
| 122 | +7. ###### 当出现如下图所示内容时,点击选项“Step Into” |
| 123 | + |
| 124 | + |
| 125 | + |
| 126 | + |
| 127 | +8. ###### 滚动页面,当代码为下图所示的内容时,可以发现此处Spring中确实采用了原型模式 |
| 128 | + |
| 129 | + |
| 130 | + |
| 131 | + |
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