SpringFramework应用接入Apollo配置中心过程解析

SpringFramework应用接入Apollo配置中心过程解析

环境：

SpringFramework：4.3.5.RELEASE

apollo-client：1.5.1

1.在项目的 resources/META-INF/ 目录下添加 app.properties 文件：

#Apollo配置id

app.id = phpdragon-demo

apollo.bootstrap.enabled = true

apollo.eagerLoad.enabled = true

apollo.cacheDir = /data/app_data/apollo_cache/

2. 新建 ApolloConfigurer 类，负责处理合并本地properties配置：

import com.alibaba.dubbo.common.utils.ConfigUtils;

import com.ctrip.framework.apollo.Config;

import com.ctrip.framework.apollo.ConfigService;

import org.springframework.beans.BeansException;

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;

import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;

import java.util.Properties;

import java.util.Set;

/**

* 处理apollo配置

*/

public class ApolloConfigurer extends PropertyPlaceholderConfigurer {

static final String[] NAMESPACES = {"PUBLIC", "REDIS", "ZOOKEEPER", "application"};

@Override

protected void processProperties(ConfigurableListableBeanFactory beanFactoryToProcess, Properties props) throws BeansException {

try {

this.reloadProperties(props);

} catch (Exception e) {

e.printStackTrace();

logger.info("获取apollo配置失败");

}

//设置到dubbo的上下里

ConfigUtils.addProperties(props);

super.processProperties(beanFactoryToProcess, props);

}

private void reloadProperties(Properties props) {

for (String namespace : NAMESPACES) {

Config config = ConfigService.getConfig(namespace);

Set fieldNames = config.getPropertyNames();

for (String attributeName : fieldNames) {

props.put(attributeName, config.getProperty(attributeName, ""));

//设置到系统变量里

System.setProperty(attributeName, config.getProperty(attributeName, ""));

}

}

}

@Override

protected String resolvePlaceholder(String placeholder, Properties props) {

this.reloadProperties(props);

return props.getProperty(placeholder);

}

}

3.在 Spring 的配置xml文件中声明配置：

classpath*:*.properties

classpath*:properties/*.properties

4.编写配置类接收远程配置变量：

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;

import org.springframework.data.redis.core.StringRedisTemplate;

import org.springframework.data.redis.serializer.StringRedisSerializer;

import redis.clients.jedis.JedisPoolConfig;

import lombok.Data;

/**

*

*/

@Data

@Configuration

//@EnableApolloConfig不能使用该注解，否则会导致无效，该注解由 ApolloConfigurer 接管类似功能

public class RedisConfig {

@Value("${sys.redis.host}")

private String hostName;

@Value("${sys.redis.port}")

private int port;

@Value("${redis.password}")

private String password;

@Value("${redis.timeout}")

private int timeout;

@Value("${redis.pool.maxTotal}")

private int maxTotal;

@Value("${redis.pool.minIdle}")

private int minIdle;

@Value("${redis.pool.maxIdle}")

private int maxIdle;

@Value("${redis.pool.maxWaitMillis}")

private long maxWaitMillis;

@Value("${redis.pool.testOnBorrow}")

private boolean testOnBorrow;

@Value("${redis.pool.testOnReturn}")

private boolean testOnReturn;

}

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