Spring相关

一、Spring系列版本对应关系

Spring	Spring-Boot	Spring-Cloud	Spring-Cloud-Netflix
4.3.x	1.5.21.RELEASE	Edgware.SR6	1.4.7.RELEASE
5.2.x	2.2.x.RELEASE	Hoxton.SR1~SR2	2.2.1.RELEASE
5.2.x	2.3.x.RELEASE	Hoxton.SR3~SR6	2.2.2.RELEASE

二、Spring上下文

1. Spring的Schema相关参数查询

• 包含jar：spring-context-x.x.x.RELEASE.jar
• 位置：org.springframework.context.config
• 文件：spring-context-x.x.xsd

三、Spring EL

1.Spring的填充普通类

 @Value("#{${thread.count}>0?${thread.count}:T(java.lang.Runtime).getRuntime().availableProcessors()*2}")
private int thread_count;

2.Spring的填充Bean

AckMode MANUAL = org.springframework.kafka.listener.AbstractMessageListenerContainer.AckMode.MANUAL
AckMode BATCH = org.springframework.kafka.listener.AbstractMessageListenerContainer.AckMode.BATCH
@Value("#{${enable.auto.commit}?@BATCH:@MANUAL}")
private AckMode ackMode;

3.Spring的填充Class

AckMode MANUAL = org.springframework.kafka.listener.AbstractMessageListenerContainer.AckMode.MANUAL
AckMode BATCH = org.springframework.kafka.listener.AbstractMessageListenerContainer.AckMode.BATCH
@Value("#{${enable.auto.commit}?B(BATCH):B(MANUAL)}")
private AckMode ackMode;

4.Spring的填充方法处理

@Value("#{'${tagschema.cache.name:}'?.split(',')}")
private String[] names;

配置

tagschema.cache.name=unit05,unit06

四、Spring xml配置

1.Spring的枚举

<bean id="BATCH" class="org.springframework.beans.factory.config.FieldRetrievingFactoryBean">
		<property name="staticField" value="org.springframework.kafka.listener.AbstractMessageListenerContainer.AckMode.BATCH"/>
</bean>

2.Spring方法构造bean

<bean id="kafkaProducerListener" class="com.kafka.spring.KafkaProducerService" autowire-candidate="false"/>
<bean id="producerListener" factory-bean="kafkaProducerListener" factory-method="callback"/>

autowire-candidate="false" 不产生bean，防止同一类产生多个bean

五、Spring开发

1. SpringMVC下载

Path file = Paths.get("/home/test.docx");
UrlResource resource = new UrlResource(file.toUri());
if (resource.exists() || resource.isReadable())
{
	BodyBuilder bulder = ResponseEntity.ok();
	bulder.cacheControl(CacheControl.empty().mustRevalidate());
	bulder.header(HttpHeaders.CONTENT_DISPOSITION, "attachment;fileName="+ URLEncoder.encode(resource.getFilename().trim().replaceAll(" ", ""),StandardCharsets.UTF_8.name()));
	bulder.header(HttpHeaders.PRAGMA, CacheControl.noCache().getHeaderValue());
	bulder.header(HttpHeaders.EXPIRES, "0");
	bulder.contentLength(resource.contentLength());
	bulder.contentType(MediaType.valueOf(MediaType.APPLICATION_OCTET_STREAM_VALUE));
	ResponseEntity<InputStreamResource> resp = bulder.body(new InputStreamResource(resource.getInputStream()));
	return resp;
}else {
	return error("报告不存在!");
}

六、SpringBoot开发

1. 服务器配置

org.springframework.boot.autoconfigure.web.ServerProperties

2. Spring获取请求

HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.currentRequestAttributes()).getRequest();