Examples of org.springframework.core.env.PropertySource

org.springframework.core.env.PropertySource

Abstract base class representing a source of name/value property pairs. The underlying {@linkplain #getSource() source object} may be of any type {@code T} that encapsulatesproperties. Examples include {@link java.util.Properties} objects, {@link java.util.Map}objects, {@code ServletContext} and {@code ServletConfig} objects (for access to initparameters). Explore the {@code PropertySource} type hierarchy to see providedimplementations.

{@code PropertySource} objects are not typically used in isolation, but ratherthrough a {@link PropertySources} object, which aggregates property sources and inconjunction with a {@link PropertyResolver} implementation that can performprecedence-based searches across the set of {@code PropertySources}.

{@code PropertySource} identity is determined not based on the content ofencapsulated properties, but rather based on the {@link #getName() name} of the{@code PropertySource} alone. This is useful for manipulating {@code PropertySource}objects when in collection contexts. See operations in {@link MutablePropertySources}as well as the {@link #named(String)} and {@link #toString()} methods for details.

Note that when working with @ {@link org.springframework.context.annotation.Configuration Configuration} classes thatthe @ {@link org.springframework.context.annotation.PropertySource PropertySource}annotation provides a convenient and declarative way of adding property sources to the enclosing {@code Environment}. @author Chris Beams @since 3.1 @see PropertySources @see PropertyResolver @see PropertySourcesPropertyResolver @see MutablePropertySources @see org.springframework.context.annotation.PropertySource


    @Test
    public void test() throws IOException {
        Map<String, Object> map = new HashMap<>();
        map.put("encoding", "gbk");
        PropertySource propertySource1 = new MapPropertySource("map", map);
        System.out.println(propertySource1.getProperty("encoding"));


        ResourcePropertySource propertySource2 = new ResourcePropertySource("resource", "classpath:resources.properties");
        System.out.println(propertySource2.getProperty("encoding"));
    }

    @Test
    public void test2() throws IOException {


        Map<String, Object> map = new HashMap<>();
        map.put("encoding", "gbk");
        PropertySource propertySource1 = new MapPropertySource("map", map);


        ResourcePropertySource propertySource2 = new ResourcePropertySource("resource", "classpath:resources.properties");


        CompositePropertySource compositePropertySource = new CompositePropertySource("composite");
        compositePropertySource.addPropertySource(propertySource1);

    @Test
    public void test3() throws IOException {


        Map<String, Object> map = new HashMap<>();
        map.put("encoding", "gbk");
        PropertySource propertySource1 = new MapPropertySource("map", map);


        ResourcePropertySource propertySource2 = new ResourcePropertySource(
                "resource", "classpath:resources.properties");

Examples of org.springframework.core.env.PropertySource

Related Classes of org.springframework.core.env.PropertySource