[spring]<context:component-scan/>使用

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
//context命名空间 xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <context:component-scan base-package="com.sparta.trans" use-default-filters="false"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan> </beans>


base-package:

告诉spring要扫描的包;


use-default-filters=”false”:
表示不要使用默认的过滤器。
use-default-filters=”true”或不设置时表示会扫描包含Service,Component,Responsitory,Controller注释修饰类。


<context:include-filter/>:
<context:include-filter>为<context:annotation-config/>的子标签(另一个相对应的子标签为:<context:exclude-filter>);
而<context:component-scan>包含了<context:annotation-config/>;

filter标签的type和表达式说明如下:
Filter TypeExamples ExpressionDescription
annotation org.example.SomeAnnotation 符合SomeAnnoation的target class
assignable org.example.SomeClass 指定class或interface的全名
aspectj org.example..*Service+ AspetJ语法
regex org.example.Default.* Regelar Expression
custom org.example.MyTypeFilter Spring3新增自订Type,称作org.springframework.core.type.TypeFilter
原文地址:https://www.cnblogs.com/vickylinj/p/9522292.html