解决Spring使用@MapperScan问题

    compile(project(":spring-context"))
//    compile(project(":spring-instrument"))
    // https://mvnrepository.com/artifact/cglib/cglib
    compile group: 'cglib', name: 'cglib', version: '2.2.2'
    // https://mvnrepository.com/artifact/mysql/mysql-connector-java
    compile group: 'mysql', name: 'mysql-connector-java', version: '8.0.21'
    // https://mvnrepository.com/artifact/org.mybatis/mybatis
    compile group: 'org.mybatis', name: 'mybatis', version: '3.5.2'
    // https://mvnrepository.com/artifact/org.mybatis/mybatis-spring
    compile group: 'org.mybatis', name: 'mybatis-spring', version: '2.0.2'

static Annotation[] getDeclaredAnnotations(AnnotatedElement source, boolean defensive) {
  boolean cached = false;
  Annotation[] annotations = declaredAnnotationCache.get(source);
  if (annotations != null) {
   cached = true;
  }
  else {
   // 使用@MapperScan 的时候会报错，引入spring-jdbc 即可
   // 具体原因暂时还不清楚
   // Invalid default: public abstract java.lang.Class org.mybatis.spring.annotation.MapperScan.factoryBean()
   annotations = source.getDeclaredAnnotations();
   if (annotations.length != 0) {
    boolean allIgnored = true;
    for (int i = 0; i < annotations.length; i++) {
     Annotation annotation = annotations[i];
     if (isIgnorable(annotation.annotationType()) ||
       !AttributeMethods.forAnnotationType(annotation.annotationType()).isValid(annotation)) {
      annotations[i] = null;
     }
     else {
      allIgnored = false;
     }
    }
    annotations = (allIgnored ? NO_ANNOTATIONS : annotations);
    if (source instanceof Class || source instanceof Member) {
     declaredAnnotationCache.put(source, annotations);
     cached = true;
    }
   }
  }
  if (!defensive || annotations.length == 0 || !cached) {
   return annotations;
  }
  return annotations.clone();
 }

 * <pre class="code">
 * &#064;Configuration
 * &#064;MapperScan("org.mybatis.spring.sample.mapper")
 * public class AppConfig {
 *
 *   &#064;Bean
 *   public DataSource dataSource() {
 *     return new EmbeddedDatabaseBuilder().addScript("schema.sql").build();
 *   }
 *
 *   &#064;Bean
 *   public DataSourceTransactionManager transactionManager() {
 *     return new DataSourceTransactionManager(dataSource());
 *   }
 *
 *   &#064;Bean
 *   public SqlSessionFactory sqlSessionFactory() throws Exception {
 *     SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
 *     sessionFactory.setDataSource(dataSource());
 *     return sessionFactory.getObject();
 *   }
 * }
 * </pre>

 <dependencies>
    <!-- Compile dependencies -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.batch</groupId>
      <artifactId>spring-batch-infrastructure</artifactId>
      <version>${spring-batch.version}</version>
      <scope>provided</scope>
    </dependency>

import tk.mybatis.spring.annotation.MapperScan;

import org.mybatis.spring.annotation.MapperScan