@ConfigurationProperties和@Enable

配置元数据官网

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• LuckyZookeeperPropertiesod.class

package com.lucky.config.properties;

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

@ConfigurationProperties(prefix = "lucky.zookeeper", ignoreInvalidFields = true)
public class LuckyZookeeperProperties {
    private String connectString;
    private int sessionTimeoutMs;
    private int connectionTimeoutMs;

    private RetryPolicy retryPolicy;


    public String getConnectString() {
        return connectString;
    }

    public void setConnectString(String connectString) {
        this.connectString = connectString;
    }

    public int getSessionTimeoutMs() {
        return sessionTimeoutMs;
    }

    public void setSessionTimeoutMs(int sessionTimeoutMs) {
        this.sessionTimeoutMs = sessionTimeoutMs;
    }

    public int getConnectionTimeoutMs() {
        return connectionTimeoutMs;
    }

    public void setConnectionTimeoutMs(int connectionTimeoutMs) {
        this.connectionTimeoutMs = connectionTimeoutMs;
    }

    public RetryPolicy getRetryPolicy() {
        return retryPolicy;
    }

    public void setRetryPolicy(RetryPolicy retryPolicy) {
        this.retryPolicy = retryPolicy;
    }

    public static class RetryPolicy {
        private int baseSleepTimeMs;
        private int maxRetries;

        public int getBaseSleepTimeMs() {
            return baseSleepTimeMs;
        }

        public void setBaseSleepTimeMs(int baseSleepTimeMs) {
            this.baseSleepTimeMs = baseSleepTimeMs;
        }

        public int getMaxRetries() {
            return maxRetries;
        }

        public void setMaxRetries(int maxRetries) {
            this.maxRetries = maxRetries;
        }
    }
}

• ZookeeperConfig.class

package com.lucky.config;

import com.lucky.config.properties.LuckyZookeeperProperties;
import org.apache.curator.RetryPolicy;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.retry.ExponentialBackoffRetry;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableConfigurationProperties(LuckyZookeeperProperties.class)
public class ZookeeperConfig {

    @Bean
    public CuratorFramework curatorZookeeperClient(LuckyZookeeperProperties properties) {
        RetryPolicy retryPolicy = new ExponentialBackoffRetry(properties.getRetryPolicy().getBaseSleepTimeMs(),
                properties.getRetryPolicy().getMaxRetries());
        final CuratorFramework client = CuratorFrameworkFactory.builder()
                .connectString(properties.getConnectString())
                .sessionTimeoutMs(properties.getSessionTimeoutMs())
                .connectionTimeoutMs(properties.getConnectionTimeoutMs())
                .retryPolicy(retryPolicy)
                .build();
        client.start();
        return client;
    }
}

• gradle

    annotationProcessor('org.springframework.boot:spring-boot-configuration-processor')

• 执行命令

gradle clear && gradle build

查看生成的自动补全json

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build/classes/java/main/META-INF/spring-configuration-metadata.json

{
  "groups": [
    {
      "name": "lucky.zookeeper",
      "type": "com.lucky.config.properties.LuckyZookeeperProperties",
      "sourceType": "com.lucky.config.properties.LuckyZookeeperProperties"
    },
    {
      "name": "lucky.zookeeper.retry-policy",
      "type": "com.lucky.config.properties.LuckyZookeeperProperties$RetryPolicy",
      "sourceType": "com.lucky.config.properties.LuckyZookeeperProperties",
      "sourceMethod": "getRetryPolicy()"
    },
    {
      "name": "spring.datasource.druid.primary",
      "type": "javax.sql.DataSource",
      "sourceType": "com.lucky.config.PrimaryDataSourceConfig",
      "sourceMethod": "dataSource()"
    }
  ],
  "properties": [
    {
      "name": "lucky.zookeeper.connect-string",
      "type": "java.lang.String",
      "description": "zookeeper地址格式:Ip1:port1,Ip2:port2.",
      "sourceType": "com.lucky.config.properties.LuckyZookeeperProperties"
    },
    {
      "name": "lucky.zookeeper.connection-timeout-ms",
      "type": "java.lang.Integer",
      "sourceType": "com.lucky.config.properties.LuckyZookeeperProperties",
      "defaultValue": 0
    },
    {
      "name": "lucky.zookeeper.retry-policy.base-sleep-time-ms",
      "type": "java.lang.Integer",
      "sourceType": "com.lucky.config.properties.LuckyZookeeperProperties$RetryPolicy",
      "defaultValue": 0
    },
    {
      "name": "lucky.zookeeper.retry-policy.max-retries",
      "type": "java.lang.Integer",
      "sourceType": "com.lucky.config.properties.LuckyZookeeperProperties$RetryPolicy",
      "defaultValue": 0
    },
    {
      "name": "lucky.zookeeper.session-timeout-ms",
      "type": "java.lang.Integer",
      "sourceType": "com.lucky.config.properties.LuckyZookeeperProperties",
      "defaultValue": 0
    }
  ],
  "hints": [
    {
      "name": "lucky.zookeeper.connect-string",
      "values": [
        {
          "value": "localhost:2181"
        },
        {
          "value": "192.168.56.103:2181,192.168.56.104:2181,192.168.56.105:2181"
        },
        {
          "value": "192.168.56.103:2181"
        }
      ]
    }
  ]
}

• 打开application.yml,发现有提示了

lucky:
  zookeeper:
    session-timeout-ms: 6000
    connection-timeout-ms: 6000
    retry-policy:
      base-sleep-time-ms: 1000
      max-retries: 3
    connect-string: 192.168.56.103:2181,192.168.56.104:2181,192.168.56.105:2181

• 如果想输入的情况也有提示，在resources目录下面的META-INF中新建additional-spring-configuration-metadata.json
  （这里的additional-spring-configuration-metadata.json会自动合并到spring-configuration-metadata.json当中）

{
  "properties": [
    {
      "name": "lucky.zookeeper.connect-string",
      "type": "java.lang.String",
      "description": "zookeeper地址格式:Ip1:port1,Ip2:port2.",
      "sourceType": "com.lucky.config.properties.LuckyZookeeperProperties"
    }
  ],
  "hints": [
    {
      "name": "lucky.zookeeper.connect-string",
      "values": [
        {
          "value": "localhost:2181"
        },
        {
          "value": "192.168.56.103:2181,192.168.56.104:2181,192.168.56.105:2181"
        },
        {
          "value": "192.168.56.103:2181"
        }
      ]
    }
  ]
}

• 连输入都有提示了

  
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