配置元数据

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.DeprecatedConfigurationProperty;

@ConfigurationProperties("my.app")
public class MyProperties {

    private String name;

    public String getName() {
        return this.name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Deprecated
    @DeprecatedConfigurationProperty(replacement = "my.app.name")
    public String getTarget() {
        return this.name;
    }

    @Deprecated
    public void setTarget(String target) {
        this.name = target;
    }

}

import java.util.Map;

import org.springframework.boot.context.properties.ConfigurationProperties;

@ConfigurationProperties("my")
public class MyProperties {

    private Map<String, Integer> contexts;

    // getters/setters ...

    public Map<String, Integer> getContexts() {
        return this.contexts;
    }

    public void setContexts(Map<String, Integer> contexts) {
        this.contexts = contexts;
    }

}

{"hints": [
    {
        "name": "my.contexts.keys",
        "values": [
            {
                "value": "sample1"
            },
            {
                "value": "sample2"
            }
        ]
    }
]}

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-configuration-processor</artifactId>
    <optional>true</optional>
</dependency>

dependencies {
    annotationProcessor "org.springframework.boot:spring-boot-configuration-processor"
}

tasks.named('compileJava') {
    inputs.files(tasks.named('processResources'))
}

import org.springframework.boot.context.properties.ConfigurationProperties;

@ConfigurationProperties(prefix = "my.server")
public class MyServerProperties {

    /**
     * Name of the server.
     */
    private String name;

    /**
     * IP address to listen to.
     */
    private String ip = "127.0.0.1";

    /**
     * Port to listener to.
     */
    private int port = 9797;

    // getters/setters ...

    public String getName() {
        return this.name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getIp() {
        return this.ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }

    public int getPort() {
        return this.port;
    }

    public void setPort(int port) {
        this.port = port;
    }
    // fold:off

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.springframework.boot.context.properties.ConfigurationProperties;

@ConfigurationProperties(prefix = "my.messaging")
public class MyMessagingProperties {

    private List<String> addresses = new ArrayList<>(Arrays.asList("a", "b"));

    private ContainerType containerType = ContainerType.SIMPLE;

    // getters/setters ...

    public List<String> getAddresses() {
        return this.addresses;
    }

    public void setAddresses(List<String> addresses) {
        this.addresses = addresses;
    }

    public ContainerType getContainerType() {
        return this.containerType;
    }

    public void setContainerType(ContainerType containerType) {
        this.containerType = containerType;
    }

    public enum ContainerType {

        SIMPLE, DIRECT

    }

}

{"properties": [
    {
        "name": "my.messaging.addresses",
        "defaultValue": ["a", "b"]
    },
    {
        "name": "my.messaging.container-type",
        "defaultValue": "simple"
    }
]}