Question

spring注入失败 使用junit测试dao层的时候显示找不到匹配的类

applicationContext的配置
<context:component-scan base-package="com"
annotation-config="true">
<context:include-filter type="regex"
expression=".Actions.*" />
<context:include-filter type="regex"
expression=".Server.*" />
<context:include-filter type="regex"
expression=".Dao.*" />
</context:component-scan>
<context:annotation-config />

dao层
import com.trionfo.freenat.model.User;

public interface UserDao {

impl层
@Component
public class UserDaoImpl implements UserDao

Answer 1

你的include-filter是使用的正则，看起来你的正则好像有问题，你可以改成如下试一下：

	<context:component-scan base-package="com"
		annotation-config="true">
		<context:include-filter type="regex"
			expression=".*\.Actions.*" />
		<context:include-filter type="regex"
			expression=".*\.Server.*" />
		<context:include-filter type="regex"
			expression=".*\.Dao.*" />
	</context:component-scan>
	<context:annotation-config />

或者是：expression="包路径.Actions.*"

Spring对此处处理的原码如下：

public class RegexPatternTypeFilter extends AbstractClassTestingTypeFilter {

private final Pattern pattern;

public RegexPatternTypeFilter(Pattern pattern) {
Assert.notNull(pattern, "Pattern must not be null");
this.pattern = pattern;
}

@Override
protected boolean match(ClassMetadata metadata) {
return this.pattern.matcher(metadata.getClassName()).matches();
}

}