/**
     * 加載jar包
     *
     * @param jarPath     jar路徑
     * @param packageName 掃面代碼的路徑
     * @return
     */
    public boolean loadJar(String jarPath, String packageName) {
        try {
            File file = FileUtil.file(jarPath);
            URLClassLoader classloader = new URLClassLoader(new URL[]{file.toURI().toURL()}, this.applicationContext.getClassLoader());
            JarFile jarFile = new JarFile(file);
            // 獲取jar包下所有的classes
            String pkgPath = packageName.replace(".", "/");
            Enumeration<JarEntry> entries = jarFile.entries();
            Class<?> clazz = null;
            List<JarEntry> xmlJarEntry = new ArrayList<>();
            List<String> loadedAliasClasses = new ArrayList<>();
            List<String> otherClasses = new ArrayList<>();
            // 首先加載model
            while (entries.hasMoreElements()) {
                JarEntry jarEntry = entries.nextElement();
                String entryName = jarEntry.getName();
                if (entryName.charAt(0) == '/') {
                    entryName = entryName.substring(1);
                }
                if (entryName.endsWith("Mapper.xml")) {
                    xmlJarEntry.add(jarEntry);
                } else {
                    if (jarEntry.isDirectory() || !entryName.contains(pkgPath) || !entryName.endsWith(".class")) {
                        continue;
                    }
                    String className = entryName.substring(0, entryName.length() - 6);
                    otherClasses.add(className.replace("/", "."));
                    log.info("load class : " + className.replace("/", "."));
                    // 將變量首字母置小寫
                    String beanName = StringUtils.uncapitalize(className);
                    if (beanName.contains(LoaderConstant.MODEL)) {
                        // 加載所有的class
                        clazz = classloader.loadClass(className.replace("/", "."));
                        SqlSessionFactory sqlSessionFactory = applicationContext.getBean(SqlSessionFactory.class);
                        sqlSessionFactory.getConfiguration().getTypeAliasRegistry().registerAlias(beanName.replace("/", "."), clazz);
                        loadedAliasClasses.add(beanName.replace("/", ".").toLowerCase());
                        doMap.put(className.replace("/", "."), clazz);
                    }
                }
            }
            // 再加載其他class
            for (String otherClass : otherClasses) {
                // 加載所有的class
                clazz = classloader.loadClass(otherClass.replace("/", "."));
                log.info("load class : " + otherClass.replace("/", "."));
                // 將變量首字母置小寫
                String beanName = StringUtils.uncapitalize(otherClass);
                if (beanName.endsWith(LoaderConstant.MAPPER)) {
                    mapperMap.put(beanName, clazz);
                } else if (beanName.endsWith(LoaderConstant.CONTROLLER)) {
                    controllerMap.put(beanName, clazz);
                } else if (beanName.endsWith(LoaderConstant.SERVICE_IMPL)) {
                    serviceImplMap.put(beanName, clazz);
                } else if (beanName.endsWith(LoaderConstant.SERVICE)) {
                    serviceMap.put(beanName, clazz);
                }
            }
            // 加載所有XML
            for (JarEntry jarEntry : xmlJarEntry) {
                SqlSessionFactory sqlSessionFactory = applicationContext.getBean(SqlSessionFactory.class);
                mybatisXMLLoader.xmlReload(sqlSessionFactory, jarFile, jarEntry, jarEntry.getName());
            }
            Jar jar = new Jar();
            jar.setName(jarPath);
            jar.setJarFile(jarFile);
            jar.setLoader(classloader);
            jar.setLoadedAliasClasses(loadedAliasClasses);
            // 開始加載bean
            registerBean(jar);
            registry.registerJar(jarPath, jar);
        } catch (Exception e) {
            log.error(e.getLocalizedMessage());
            return false;
        }
        return true;
    }

// 獲取bean工廠并轉(zhuǎn)換為DefaultListableBeanFactory
        DefaultListableBeanFactory beanFactory = (DefaultListableBeanFactory) ((ConfigurableApplicationContext)
                applicationContext).getBeanFactory();
        // 定義BeanDefinition
        BeanDefinitionBuilder beanDefinitionBuilder = BeanDefinitionBuilder.genericBeanDefinition(clazz);
        GenericBeanDefinition beanDefinition = (GenericBeanDefinition) beanDefinitionBuilder.getRawBeanDefinition();
        //設(shè)置當(dāng)前bean定義對象是單利的
        beanDefinition.setScope("singleton");
        // 將變量首字母置小寫
        beanName = StringUtils.uncapitalize(beanName);
        // 將構(gòu)建的BeanDefinition交由Spring管理
        beanFactory.registerBeanDefinition(beanName, beanDefinition);
        // 手動構(gòu)建實(shí)例，并注入base service 防止卸載之后不再生成
        Object obj = clazz.newInstance();
        beanFactory.registerSingleton(beanName, obj);
        log.info("register Singleton :" + beanName);
        final RequestMappingHandlerMapping requestMappingHandlerMapping =
                    applicationContext.getBean(RequestMappingHandlerMapping.class);
        if (requestMappingHandlerMapping != null) {
                String handler = beanName;
                Object controller = null;
                try {
                    controller = applicationContext.getBean(handler);
                } catch (Exception e) {
                    e.printStackTrace();
                }
                if (controller == null) {
                    return beanName;
                }
                // 注冊Controller
                Method method = requestMappingHandlerMapping.getClass().getSuperclass().getSuperclass().
                        getDeclaredMethod("detectHandlerMethods", Object.class);
                // 將private改為可使用
                method.setAccessible(true);
                method.invoke(requestMappingHandlerMapping, handler);
        }

SqlSessionFactory sqlSessionFactory = applicationContext.getBean(SqlSessionFactory.class);
sqlSessionFactory.getConfiguration().getTypeAliasRegistry().registerAlias(beanName.replace("/", "."), clazz);

/**
     * 解析加載XML
     *
     * @param sqlSessionFactory
     * @param jarFile jar對象
     * @param jarEntry jar包中的XML對象
     * @param name XML名稱
     * @throws IOException
     * @throws NoSuchFieldException
     * @throws IllegalAccessException
     */
    public void xmlReload(SqlSessionFactory sqlSessionFactory, JarFile jarFile, JarEntry jarEntry, String name) throws IOException, NoSuchFieldException, IllegalAccessException {
        // 2. 取得Configuration
        Configuration targetConfiguration = sqlSessionFactory.getConfiguration();
        Class<?> aClass = targetConfiguration.getClass();
        if (targetConfiguration.getClass().getSimpleName().equals("MybatisConfiguration")) {
            aClass = Configuration.class;
        }
        Set<String> loadedResources = (Set<String>) ObjectUtil.getFieldValue(targetConfiguration, aClass, "loadedResources");
        loadedResources.remove(name);
        // 3. 去掉之前加載的數(shù)據(jù)
        Map<String, ResultMap> resultMaps = (Map<String, ResultMap>) ObjectUtil.getFieldValue(targetConfiguration, aClass, "resultMaps");
        Map<String, XNode> sqlFragmentsMaps = (Map<String, XNode>) ObjectUtil.getFieldValue(targetConfiguration, aClass, "sqlFragments");
        Map<String, MappedStatement> mappedStatementMaps = (Map<String, MappedStatement>) ObjectUtil.getFieldValue(targetConfiguration, aClass, "mappedStatements");
        XPathParser parser = new XPathParser(jarFile.getInputStream(jarEntry), true, targetConfiguration.getVariables(), new XMLMapperEntityResolver());
        XNode mapperXNode = parser.evalNode("/mapper");
        List<XNode> resultMapNodes = mapperXNode.evalNodes("/mapper/resultMap");
        String namespace = mapperXNode.getStringAttribute("namespace");
        for (XNode xNode : resultMapNodes) {
            String id = xNode.getStringAttribute("id", xNode.getValueBasedIdentifier());
            resultMaps.remove(namespace + "." + id);
        }
        List<XNode> sqlNodes = mapperXNode.evalNodes("/mapper/sql");
        for (XNode sqlNode : sqlNodes) {
            String id = sqlNode.getStringAttribute("id", sqlNode.getValueBasedIdentifier());
            sqlFragmentsMaps.remove(namespace + "." + id);
        }
        List<XNode> msNodes = mapperXNode.evalNodes("select|insert|update|delete");
        for (XNode msNode : msNodes) {
            String id = msNode.getStringAttribute("id", msNode.getValueBasedIdentifier());
            mappedStatementMaps.remove(namespace + "." + id);
        }
        try {
            // 4. 重新加載和解析被修改的 xml 文件
            XMLMapperBuilder xmlMapperBuilder = new XMLMapperBuilder(jarFile.getInputStream(jarEntry),
                    targetConfiguration, name, targetConfiguration.getSqlFragments());
            xmlMapperBuilder.parse();
        } catch (Exception e) {
            log.error(e.getMessage(), e);
        }
        log.info("Parsed mapper file: '" + name + "'");
    }