com.baomidou.framework.spring.SpringScanPackage.java Source code

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Here is the source code for com.baomidou.framework.spring.SpringScanPackage.java

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/**
 * Copyright (c) 2011-2020, hubin (jobob@qq.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.baomidou.framework.spring;

import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.core.type.classreading.CachingMetadataReaderFactory;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.util.ClassUtils;

/**
 * <p>
 * spring ??
 * </p>
 * 
 * @author hubin
 * @date 2016-08-12
 */
public class SpringScanPackage {

    /**
     * ?? class ?
     */
    public static Map<String, Set<String>> SCAN_CLASS_MAP = new ConcurrentHashMap<String, Set<String>>();

    /**
     * ???
     */
    private ScanInfo[] scanInfos;

    public SpringScanPackage() {

    }

    public void scanPackage() {
        if (null != scanInfos && scanInfos.length >= 1) {
            for (ScanInfo scanInfo : scanInfos) {
                Set<String> clazzSet = findPackageClass(scanInfo.getScanPackages());
                SCAN_CLASS_MAP.put(scanInfo.getScanFlag(), clazzSet);
            }
        }
    }

    public ScanInfo[] getScanInfos() {
        return scanInfos;
    }

    public void setScanInfos(ScanInfo[] scanInfos) {
        this.scanInfos = scanInfos;
    }

    /**
     * <p>
     * ???,?
     * </p>
     *
     * @param scanPackages
     *            ??package
     * @return
     */
    public static Set<String> findPackageClass(String scanPackages) {
        Set<String> clazzSet = new HashSet<String>();
        ResourcePatternResolver resolver = (ResourcePatternResolver) new PathMatchingResourcePatternResolver();
        MetadataReaderFactory metadataReaderFactory = new CachingMetadataReaderFactory(resolver);
        String pkg = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX
                + ClassUtils.convertClassNameToResourcePath(scanPackages) + "/**/*.class";
        /*
         * ??Resource
         * ClassLoader.getResource("META-INF")?????????
         */
        try {
            Resource[] resources = resolver.getResources(pkg);
            if (resources != null && resources.length > 0) {
                for (Resource resource : resources) {
                    if (resource.isReadable()) {
                        MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource);
                        if (metadataReader != null) {
                            clazzSet.add(metadataReader.getClassMetadata().getClassName());
                        }
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return clazzSet;
    }

}

class ScanInfo {
    /**
     * ??
     */
    private String scanFlag;

    /**
     * ??
     */
    private String scanPackages;

    public String getScanFlag() {
        return scanFlag;
    }

    public void setScanFlag(String scanFlag) {
        this.scanFlag = scanFlag;
    }

    public String getScanPackages() {
        return scanPackages;
    }

    public void setScanPackages(String scanPackages) {
        this.scanPackages = scanPackages;
    }
}