spring ioc 依賴注入

spring ioc：控制反轉，或叫依賴注入

簡單的bean裝配：

import

import
import
test.helloworld;
public
class
test 
}

public

class
helloworld 
}

beans.xml

<?

xml version="1.0" encoding="utf-8"
?>
<
beans 
xmlns
=""xmlns:xsi
=""xsi:schemalocation
="/spring-beans.xsd"
>
<
bean 
id="helloworld"
class
="test.helloworld"
>
bean
>
beans
>

依賴注入：

1，屬性注入；

2，建構函式注入；(通過型別；通過索引；聯合使用)

3，工廠方法注入；(非靜態工廠，靜態工廠)

4，泛型依賴注入；(spring4 整合hibernate4 的時候順帶講)

package

entity;
public
class
people 
public people(int id, string name, int
age) 
public
intgetid() 
public
void setid(int
id) 
public
string getname() 
public
void
setname(string name) 
public
intgetage() 
public
void setage(int
age) 
@override
public
string tostring() 
}

package

factory;
import
entity.people;
public
class
peoplefactory 
}

package

factory;
import
entity.people;
public
class
peoplefactory2 
}

import

import
import
entity.people;
public
class
test2 
}

<?

xml version="1.0" encoding="utf-8"
?>
<
beans 
xmlns
=""xmlns:xsi
=""xsi:schemalocation
="/spring-beans.xsd"
>
<
bean 
id="people"
class
="entity.people"
>
bean
>
<
bean 
id="people2"
class
="entity.people"
>
<
property 
name
="id"
value
="1"
>
property
>
<
property 
name
="name"
value
="張三"
>
property
>
<
property 
name
="age"
value
="11"
>
property
>
bean
>
<
bean 
id="people3"
class
="entity.people"
>
<
constructor-arg 
type
="int"
value
="2"
>
constructor-arg
>
<
constructor-arg 
type
="string"
value
="李四"
>
constructor-arg
>
<
constructor-arg 
type
="int"
value
="22"
>
constructor-arg
>
bean
>
<
bean 
id="people4"
class
="entity.people"
>
<
constructor-arg 
index
="0"
value
="3"
>
constructor-arg
>
<
constructor-arg 
index
="1"
value
="王五"
>
constructor-arg
>
<
constructor-arg 
index
="2"
value
="55"
>
constructor-arg
>
bean
>
<
bean 
id="people5"
class
="entity.people"
>
<
constructor-arg 
index
="0"
type
="int"
value
="4"
>
constructor-arg
>
<
constructor-arg 
index
="1"
type
="string"
value
="招六"
>
constructor-arg
>
<
constructor-arg 
index
="2"
type
="int"
value
="66"
>
constructor-arg
>
bean
>
<
bean 
id="peoplefactory"
class
="factory.peoplefactory"
>
bean
>
<
bean 
id="people8"
class
="factory.peoplefactory2"
factory-method
="createpeople"
>
bean
>
beans
>

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