一：
目前
创新互联公司已为上1000+的企业提供了网站建设、域名、
虚拟主机、
绵阳服务器托管、企业网站设计、
上党网站维护等服务，公司将坚持客户导向、应用为本的策略，正道将秉承"和谐、参与、激情"的文化，与客户和合作伙伴齐心协力一起成长，共同发展。
package com.zcp.springstart2;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
@SpringBootApplication
public class App {
public static void main(String[] args) {
ConfigurableApplicationContext context = SpringApplication.run(App.class, args);
System.out.println(System.getProperty("file.encoding"));
System.out.println(context.getBeansOfType(EncodingConvert.class));
System.out.println(">>>>>>>>>>>>>start>>>>>>>>>>>>");
System.out.println(context.getBeansOfType(Runnable.class));
System.out.println(">>>>>>>>>>>>>end>>>>>>>>>>>>");
context.close();
}
}
接口：
package com.zcp.springstart2;
public interface EncodingConvert {
}
接口的实现:
package com.zcp.springstart2;
public class UTF8EncodingConvert implements EncodingConvert {
}
package com.zcp.springstart2;
public class GBKEncodingConvert implements EncodingConvert {
}
package com.zcp.springstart2;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.type.AnnotatedTypeMetadata;
public class GBKCondition implements Condition {
@Override
public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
String encoding = System.getProperty("file.encoding");
if(null != encoding){
return "gbk".equals(encoding.toLowerCase());
}
return false;
}
}
package com.zcp.springstart2;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.type.AnnotatedTypeMetadata;
public class UTF8Condition implements Condition {
@Override
public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
String encoding = System.getProperty("file.encoding");
if(null != encoding){
return "utf-8".equals(encoding.toLowerCase());
}
return false;
}
}
常用的conditional的使用:
package com.zcp.springstart2;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
@SpringBootConfiguration
public class UserConfig {
@Bean
@ConditionalOnProperty(name="runnable.enabled",havingValue="true",matchIfMissing=true)
public Runnable createRunnable(){
return new Runnable() {
@Override
public void run() {
System.out.println("UserConfig中的Runnable");
}
};
}
@Bean
@ConditionalOnClass(name="com.zcp.springstart2.User")
public Runnable createRunnableOnClass(){
return new Runnable() {
@Override
public void run() {
System.out.println("UserConfig中的createRunnableOnBean");
}
};
}
@Bean
@ConditionalOnBean(name="user")
public Runnable createRunnableOnBean(){
return new Runnable() {
@Override
public void run() {
System.out.println("UserConfig中的createRunnableOnBean");
}
};
}
}
另外有需要云服务器可以了解下创新互联scvps.cn，海内外云服务器15元起步，三天无理由+7*72小时售后在线，公司持有idc许可证，提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案，具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势，专为企业上云打造定制，能够满足用户丰富、多元化的应用场景需求。
网站题目：springboot的conditioanal的解析-创新互联
本文链接：
http://cdkjz.cn/article/ddchsg.html
