package com.java110.doc.registrar;
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import com.java110.doc.annotation.Java110CmdDoc;
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import com.java110.doc.annotation.Java110CmdDocDiscovery;
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import com.java110.doc.entity.CmdDocDto;
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import org.springframework.beans.factory.BeanClassLoaderAware;
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import org.springframework.beans.factory.annotation.AnnotatedBeanDefinition;
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import org.springframework.beans.factory.config.BeanDefinition;
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import org.springframework.beans.factory.support.BeanDefinitionRegistry;
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import org.springframework.context.ResourceLoaderAware;
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import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
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import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
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import org.springframework.core.io.ResourceLoader;
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import org.springframework.core.type.AnnotationMetadata;
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import org.springframework.core.type.filter.AnnotationTypeFilter;
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import org.springframework.util.ClassUtils;
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import org.springframework.util.StringUtils;
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import java.beans.Introspector;
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import java.lang.annotation.Annotation;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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/**
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* api 文档 注入类
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* Created by wuxw on 2018/7/2.
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*/
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public class Java110CmdDocDiscoveryRegistrar implements ImportBeanDefinitionRegistrar, ResourceLoaderAware, BeanClassLoaderAware {
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private ResourceLoader resourceLoader;
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private ClassLoader classLoader;
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public Java110CmdDocDiscoveryRegistrar() {
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}
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@Override
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public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata, BeanDefinitionRegistry registry) {
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try {
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registerListener(importingClassMetadata, registry);
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} catch (NoSuchMethodException e) {
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e.printStackTrace();
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} catch (InvocationTargetException e) {
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e.printStackTrace();
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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}
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}
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@Override
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public void setBeanClassLoader(ClassLoader classLoader) {
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this.classLoader = classLoader;
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}
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@Override
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public void setResourceLoader(ResourceLoader resourceLoader) {
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this.resourceLoader = resourceLoader;
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}
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/**
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* 注册侦听
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*
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* @param metadata
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* @param registry
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*/
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public void registerListener(AnnotationMetadata metadata,
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BeanDefinitionRegistry registry) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
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ClassPathScanningCandidateComponentProvider scanner = getScanner();
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scanner.setResourceLoader(this.resourceLoader);
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Set<String> basePackages;
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Map<String, Object> attrs = metadata
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.getAnnotationAttributes(Java110CmdDocDiscovery.class.getName());
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Object cmdPublishClassObj = attrs.get("cmdDocClass");
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//Assert.notNull(cmdPublishClassObj,"Java110CmdDiscovery 没有配置 cmdPublishClass 属性");
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Class<?> cmdPublishClass = (Class<?>) cmdPublishClassObj;
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AnnotationTypeFilter annotationTypeFilter = new AnnotationTypeFilter(
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Java110CmdDoc.class);
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scanner.addIncludeFilter(annotationTypeFilter);
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basePackages = getBasePackages(metadata);
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for (String basePackage : basePackages) {
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Set<BeanDefinition> candidateComponents = scanner
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.findCandidateComponents(basePackage);
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for (BeanDefinition candidateComponent : candidateComponents) {
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if (candidateComponent instanceof AnnotatedBeanDefinition) {
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// verify annotated class is an interface
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AnnotatedBeanDefinition beanDefinition = (AnnotatedBeanDefinition) candidateComponent;
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AnnotationMetadata annotationMetadata = beanDefinition.getMetadata();
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Map<String, Object> attributes = annotationMetadata
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.getAnnotationAttributes(
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Java110CmdDoc.class.getCanonicalName());
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String beanName = getListenerName(attributes, beanDefinition);
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CmdDocDto cmdDocDto = new CmdDocDto();
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cmdDocDto.setCmdClass(candidateComponent.getClass());
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cmdDocDto.setDescription(attributes.get("description").toString());
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cmdDocDto.setAuthor(attributes.get("author").toString());
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cmdDocDto.setResource(attributes.get("resource").toString());
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cmdDocDto.setTitle(attributes.get("title").toString());
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cmdDocDto.setUrl(attributes.get("url").toString());
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cmdDocDto.setVersion(attributes.get("version").toString());
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cmdDocDto.setHttpMethod(attributes.get("httpMethod").toString());
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cmdDocDto.setServiceCode(attributes.get("serviceCode").toString());
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/*BeanDefinitionHolder definitionHolder = new BeanDefinitionHolder(beanDefinition, beanName);
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BeanDefinitionReaderUtils.registerBeanDefinition(definitionHolder, registry);*/
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Method method = cmdPublishClass.getMethod("addCmdDoc", CmdDocDto.class);
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method.invoke(null, cmdDocDto);
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}
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}
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}
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}
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protected ClassPathScanningCandidateComponentProvider getScanner() {
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return new ClassPathScanningCandidateComponentProvider(false) {
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@Override
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protected boolean isCandidateComponent(
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AnnotatedBeanDefinition beanDefinition) {
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if (beanDefinition.getMetadata().isIndependent()) {
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// TODO until SPR-11711 will be resolved
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if (beanDefinition.getMetadata().isInterface()
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&& beanDefinition.getMetadata()
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.getInterfaceNames().length == 1
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&& Annotation.class.getName().equals(beanDefinition
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.getMetadata().getInterfaceNames()[0])) {
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try {
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Class<?> target = ClassUtils.forName(
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beanDefinition.getMetadata().getClassName(),
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Java110CmdDocDiscoveryRegistrar.this.classLoader);
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return !target.isAnnotation();
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} catch (Exception ex) {
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this.logger.error(
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"Could not load target class: "
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+ beanDefinition.getMetadata().getClassName(),
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ex);
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}
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}
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return true;
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}
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return false;
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}
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};
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}
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protected Set<String> getBasePackages(AnnotationMetadata importingClassMetadata) {
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Map<String, Object> attributes = importingClassMetadata
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.getAnnotationAttributes(Java110CmdDocDiscovery.class.getCanonicalName());
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Set<String> basePackages = new HashSet<String>();
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for (String pkg : (String[]) attributes.get("value")) {
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if (StringUtils.hasText(pkg)) {
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basePackages.add(pkg);
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}
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}
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for (String pkg : (String[]) attributes.get("basePackages")) {
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if (StringUtils.hasText(pkg)) {
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basePackages.add(pkg);
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}
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}
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if (basePackages.isEmpty()) {
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basePackages.add(
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ClassUtils.getPackageName(importingClassMetadata.getClassName()));
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}
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return basePackages;
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}
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/**
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* 获取名称
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*
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* @param listeners
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* @param beanDefinition
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* @return
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*/
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private String getListenerName(Map<String, Object> listeners, AnnotatedBeanDefinition beanDefinition) {
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if (listeners == null) {
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String shortClassName = ClassUtils.getShortName(beanDefinition.getBeanClassName());
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return Introspector.decapitalize(shortClassName);
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}
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String value = (String) listeners.get("value");
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if (!StringUtils.hasText(value)) {
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value = (String) listeners.get("name");
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}
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if (StringUtils.hasText(value)) {
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return value;
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}
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String shortClassName = ClassUtils.getShortName(beanDefinition.getBeanClassName());
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value = Introspector.decapitalize(shortClassName);
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return value;
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}
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}
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