SpringContext PathMatchingResourcePatternResolver Sınıfı

Giriş

Şu satırı dahil ederiz

import  org.springframework.core.io.support.PathMatchingResourcePatternResolver;

Kalıtım şöyle

ResourceLoader

  ResourcePatternResolver

    PathMatchingResourcePatternResolver

getResource metodu

Resource döner

Örnek - classpath

Şöyle yaparız

@Component
public class ValidationUtil {
  private final ResourcePatternResolver resourcePatternResolver;

  public ValidationUtil(ResourcePatternResolver resourcePatternResolver) {
    this.resourcePatternResolver = resourcePatternResolver;
  }

  public void readResource() {
    String path = "classpath:schema/user_details-country.json";
    Resource resource = resourcePatternResolver.getResource(path);
    if (!resource.exists()) {
      ...
    }
    try (InputStream schemaStream = resource.getInputStream()) {
      ...
    } catch (Exception e) {
      ...
    }
  }
}

getResources metodu

Resource[] döner.

1. classpath: olarak kullanırsak  src/main/resources altında belirtilen örüntüye uyan dosyaları arar

2. file: olarak kullanırsak  belirtilen örüntüye uyan dosyaları arar

Örnek - classpath

Şöyle yaparız. src/main/resources/csv altındaki dosyalara erişiriz

@Component  
public class CsvUpsertCallback implements Callback {  
  @Autowired  
  private ResourceLoader resourceLoader;  

  // Get the path to the CSV directory  
  PathMatchingResourcePatternResolver resolver = 
    new PathMatchingResourcePatternResolver(resourceLoader);  
  Resource[] resources = resolver.getResources("classpath:csv/*");  
  List<File> files = new ArrayList<>();  
  for (Resource resource : resources) {  
    File file = resource.getFile();  
    if (file.getName().toLowerCase().endsWith(".csv")){  
      files.add(file);  
    }  
  }  
}

Örnek - "file:/path/to/folder/*.sql"

Şöyle yaparız

PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
Resource[] resources = resolver.getResources(ExecuteSqlScriptRunner.BASE_SCRIPT_FOLDER +
  dirName + "/*.sql");