步骤1:创建新的 Java 文件 首先,在你的项目中创建一个新的 Java 文件。你可以命名它为OptionalImport.java。 步骤2:输入所需的类或功能的路径 在代码中定义所需的类名,通常通过条件判断来确定是否导入。 StringrequiredClass="java.util.ArrayList";// 这里定义了一个需要导入的类名 1. 步骤3
importorg.springframework.core.type.filter.AnnotationTypeFilter; importjava.util.Map; importjava.util.Optional; importjava.util.Set; /** *@authorhuan.fu 2021/4/14 - 上午9:25 */ publicclassCustomImportBeanDefinitionRegistrarimplementsImportBeanDefinitionRegistrar, ResourceLoaderAware, EnvironmentAware { ...
Removes the mapping for this key from this map if it is present (optional operation). More formally, if this map contains a mapping from key k to value v such that(key==null ? k==null : key.equals(k)), that mapping is removed. (The map can contain at most one such mapping.) ...
importfeign.optionals.OptionalDecoder; importio.vavr.jackson.datatype.VavrModule; importokhttp3.ConnectionPool; importorg.springframework.beans.factory.ObjectFactory; importorg.springframework.boot.autoconfigure.http.HttpMessageConverters; importorg.springframework.cloud.openfeign.FeignClientsConfiguration; impo...
import java.util.UUID; import java.util.Optional; import org.example.Foo.Builder; // violation import org.example.Bar; import org.example.Baz.Status; // violation class NoNestedImports {} If the whole thing were as simple as matching that regular expression (or whatever, I'm sure I could...
import static java.util.Comparator.comparing; import java.util.List; import java.util.Locale; import java.util.Optional; public class Example { public Optional<String> getBar(List<String> foo) { return foo.stream() .sorted(comparing((String it) -> it.toLowerCase(Locale.ROOT).trim())) ....
import java.util.Date; // imports only Date class import java.io.*; // imports everything inside java.io package The import statement is optional in Java. If you want to use class/interface from a certain package, you can also use its fully qualified name, which includes its full pack...
Descriptor.java:282) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:272) ~[junit-jupiter-engine-5.8.2.jar:5.8.2] at java.base/java.util.Optional.orElseGet(Optional.java:369) ...
(FeedbackEntityVisitorContainer.java:22) at java.util.Optional.ifPresent(Optional.java:159) at com.atlassian.jira.bc.dataimport.DefaultOfbizImportHandler.lambda$startElement$3(DefaultOfbizImportHandler.java:317) at java.util.Optional.ifPresent(Optional.java:159) at com.atlass...
核心功能无疑是exec_module方法,但是InspectLoader在此基础上实现了几个拓展协议,参考pep-0302-Optional Extensions to the Importer Protocol。 2.4 hooks注册 上面我们在实现好导入协议之后,就需要将自定义的importer进行注册才能使用,而根据注册的方式又分为两个hooks,Meta hooks和Path hooks 2.4.1 Meta Hooks Meta ...