通过实现redis功能来演示如何自定义start
本文主要通过模拟实现redis的功能来自定义start，具体实现口可以往下看
1、新建SpringBoot项目，引入依赖
2、定义属性类
@ConfigurationProperties(prefix = "forlan.redis")
public class ForlanRedisProperties {
private int database = 0;
private String host = "localhost";
private String password;
private int port = 6379;
public int getDatabase() {
return database;
}
public void setDatabase(int database) {
this.database = database;
}
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public int getPort() {
return port;
}
public void setPort(int port) {
this.port = port;
}
}
3、定义配置类（重点）
@Configuration
@ConditionalOnClass(value = Jedis.class)
@EnableConfigurationProperties(ForlanRedisProperties.class)
public class ForlanAutoConfiguration {
@Bean
@ConditionalOnMissingBean
public Jedis jedis(ForlanRedisProperties forlanRedisProperties) {
Jedis jedis = new Jedis(forlanRedisProperties.getHost(), forlanRedisProperties.getPort());
if (StringUtils.isNotBlank(forlanRedisProperties.getPassword())) {
jedis.auth(forlanRedisProperties.getPassword());
}
jedis.select(forlanRedisProperties.getDatabase());
return jedis;
}
}
4、定义spring.factories
在resources目录META-INF新建
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
cn.forlan.spring.autoconfigure.ForlanAutoConfiguration
5、测试
引入自定义start
配置属性文件
#forlan_redis
forlan.redis.database=1
forlan.redis.host=127.0.0.1
forlan.redis.password=
forlan.redis.port=6379
测试方法
@Autowired
private Jedis jedis;
@Test
public void testRedis() {
jedis.set("forlan-redis-start", "测试自定义组件");
}
查看redis，发现forlan-redis-start已经缓存到redis，自定义start正常使用
本地:1>get forlan-redis-start
"测试自定义组件"
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