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874天前package class_scanner; |
import java.io.IOException; |
import java.util.HashSet; |
import java.util.Set; |
import org.springframework.core.io.Resource; |
import org.springframework.core.io.support.PathMatchingResourcePatternResolver; |
import org.springframework.core.io.support.ResourcePatternResolver; |
/** |
* <p> |
* 扫描特定目录下面的class文件，参考spring的component scan实现 |
* 可以支持普通文件(tomcat)，jar包和<b>VFS(jboss)</b> |
* </p> |
* @Required spring-core-3.2.3 |
* @author luis.chen |
* @version $Id: ClassScanner.java, v 0.1 2014年6月30日 下午2:53:29 luis.chen Exp $ |
*/ |
public class ClassScanner { |
/** |
* 通过包名定位下面所有的class文件 |
* @param packageName 包名格式com.xxx.yyy |
* @throws IOException |
* @throws ClassNotFoundException |
* */ |
public static Set<Class<?>> loadClassByPackage(String packageName) throws IOException, ClassNotFoundException{ |
Set<Class<?>> clzSet = new HashSet<Class<?>>(); |
//定义资源格式为class后缀 |
String resourcePattern = "**/*.class"; |
//用于搜索的完整路径 |
//格式为 classpath*:aaa/bbb/cc/**/*.class |
String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + |
packageName.replaceAll("\\.", "/") + "/" + resourcePattern; |
ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver(); |
Resource[] resources = resourcePatternResolver.getResources(packageSearchPath); |
for (Resource resource : resources) { |
//去掉.class 获得真正的类名 |
String className = resource.getFilename().substring(0, resource.getFilename().length() - 6); |
clzSet.add(Class.forName(packageName+"."+className)); |
} |
return clzSet; |
} |
|
public static void main(String args[]){ |
String pkgName = "bean_mapping"; |
try { |
Set<Class<?>> clzSet = ClassScanner.loadClassByPackage(pkgName); |
for(Class<?> clz: clzSet){ |
System.out.println(clz.getName()); |
//输出如下 |
/* |
bean_mapping.Name2 |
bean_mapping.TestBeanMapping |
bean_mapping.Name |
bean_mapping.SrcObjectMapper |
bean_mapping.DescObj |
bean_mapping.SourceObj |
*/ |
|
} |
} catch (IOException e) { |
e.printStackTrace(); |
} catch (ClassNotFoundException e) { |
e.printStackTrace(); |
} |
} |
} |
