Spring基础学习教程(applicationContext.xml 配置文件详解)-07

Love The Way You Lie 2022-06-15 04:48 118阅读 0赞

# applicationContext.xml 文件    #

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1.  **<?****xml** version="1.0" encoding="UTF-8"**?>**  
2.  **<****beans** xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"  
3.      xmlns:tx="http://www.springframework.org/schema/tx" xmlns:p="http://www.springframework.org/schema/p" xmlns:util="http://www.springframework.org/schema/util" xmlns:jdbc="http://www.springframework.org/schema/jdbc"  
4.      xmlns:cache="http://www.springframework.org/schema/cache"  
5.      xsi:schemaLocation="  
6.      http://www.springframework.org/schema/context  
7.      http://www.springframework.org/schema/context/spring-context.xsd  
8.      http://www.springframework.org/schema/beans  
9.      http://www.springframework.org/schema/beans/spring-beans.xsd  
10.     http://www.springframework.org/schema/tx  
11.     http://www.springframework.org/schema/tx/spring-tx.xsd  
12.     http://www.springframework.org/schema/jdbc  
13.     http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd  
14.     http://www.springframework.org/schema/cache  
15.     http://www.springframework.org/schema/cache/spring-cache-3.1.xsd  
16.     http://www.springframework.org/schema/aop  
17.     http://www.springframework.org/schema/aop/spring-aop.xsd  
18.     http://www.springframework.org/schema/util  
19.     http://www.springframework.org/schema/util/spring-util.xsd"**>**  
20.   
21.       
22.     **<****context:component-scan** base-package="com.eduoinfo.finances.bank.web"**>****</****context:component-scan****>**  
23.   
24.       
25.     **<****bean** id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"**>**  
26.         **<****property** name="locations"**>**  
27.             **<****list****>**  
28.                 **<****value****>**classpath\*:jdbc.properties**</****value****>**  
29.             **</****list****>**  
30.         **</****property****>**  
31.     **</****bean****>**  
32.   
33.       
34.     **<****bean** id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"**>**  
35.           
36.         **<****property** name="url" value="$\{jdbc.url\}" **/>**  
37.         **<****property** name="username" value="$\{jdbc.username\}" **/>**  
38.         **<****property** name="password" value="$\{jdbc.password\}" **/>**  
39.   
40.           
41.         **<****property** name="initialSize" value="1" **/>**  
42.         **<****property** name="minIdle" value="1" **/>**  
43.         **<****property** name="maxActive" value="20" **/>**  
44.   
45.           
46.         **<****property** name="maxWait" value="60000" **/>**  
47.   
48.           
49.         **<****property** name="timeBetweenEvictionRunsMillis" value="60000" **/>**  
50.   
51.           
52.         **<****property** name="minEvictableIdleTimeMillis" value="300000" **/>**  
53.   
54.         **<****property** name="validationQuery" value="SELECT 'x'" **/>**  
55.         **<****property** name="testWhileIdle" value="true" **/>**  
56.         **<****property** name="testOnBorrow" value="false" **/>**  
57.         **<****property** name="testOnReturn" value="false" **/>**  
58.   
59.           
60.         **<****property** name="poolPreparedStatements" value="false" **/>**  
61.         **<****property** name="maxPoolPreparedStatementPerConnectionSize" value="20" **/>**  
62.   
63.           
64.         **<****property** name="filters" value="stat" **/>**  
65.     **</****bean****>**  
66.   
67.       
68.     **<****bean** id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean" p:dataSource-ref="dataSource" p:configLocation="classpath:mybatis-config.xml" p:mapperLocations="classpath:com/eduoinfo/finances/bank/web/dao/\*.xml" **/>**  
69.   
70.       
71.     **<****bean** class="org.mybatis.spring.mapper.MapperScannerConfigurer" p:basePackage="com.eduoinfo.finances.bank.web.dao" p:sqlSessionFactoryBeanName="sqlSessionFactory" **/>**  
72.   
73.       
74.     **<****bean** id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager" p:dataSource-ref="dataSource" **/>**  
75.   
76.       
77.     **<****aop:aspectj-autoproxy** proxy-target-class="true" **/>**  
78.   
79.       
80.     **<****tx:annotation-driven** transaction-manager="transactionManager" **/>**  
81.   
82.       
83.     **<****cache:annotation-driven** cache-manager="cacheManager" **/>**  
84.     **<****bean** id="ehCacheManagerFactory" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean" p:configLocation="classpath:ehcache.xml" **/>**  
85.     **<****bean** id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager" p:cacheManager-ref="ehCacheManagerFactory" **/>**  
86.   
87. **</****beans****>**

1、<context:component-scan base-package="com.eduoinfo.finances.bank.web"></context:component-scan> 作用

Spring 容器初始化的时候，会扫描 com.eduoinfo.finances.bank.web下 标有 ( @Component,@Service,@Controller,@Repository ) 注解的 类  纳入spring容器管理

**在类上 ，使用以下注解，实现bean 的声明**

@Component 泛指组件，当组件不好归类的时候，我们可以使用这个注解进行标注。

@Service 用于标注业务层组件

@Controller 用于标注控制层组件（如srping mvc的controller,struts中的action）

@Repository 用于标注数据访问组件，即DAO组件

示例：

@Controller  
@RequestMapping(value = "/test")  
public class TestController \{

\------------------------------------------------------------------------------------------------------------------

**在类的成员变量上,使用以下注解，实现属性的自动装配**

@Autowired : 按类 的 类型进行装配