SpringBoot 02: 初識SpringBoot( 二 ) _生活百科

【SpringBoot 02: 初識SpringBoot】@Component@ConfigurationProperties(prefix = "school")public class SchoolInfo {private String name;private String website;private String address;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getWebsite() {return website;}public void setWebsite(String website) {this.website = website;}public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}@Overridepublic String toString() {return "SchoolInfo{" +"name='" + name + '\'' +", website='" + website + '\'' +", address='" + address + '\'' +'}';}}使用jsp

SpringBoot不推薦使用jsp, 而是使用模板技術代替jsp
如果要使用jsp, 需要添加如下依賴，負責編譯jsp文件

<dependency><groupId>org.apache.tomcat.embed</groupId><artifactId>tomcat-embed-jasper</artifactId></dependency>

如果需要使用servlet, jsp, jstl的功能, 需要添加如下依賴

<dependency>	<groupId>javax.servlet</groupId>	<artifactId>jstl</artifactId></dependency><dependency>	<groupId>javax.servlet</groupId>	<artifactId>javax.servlet-api</artifactId></dependency><dependency><groupId>javax.servlet.jsp</groupId>	<artifactId>javax.servlet.jsp-api</artifactId>	<version>2.3.1</version></dependency>

創建一個存放jsp的目錄, 一般為src/main/webapp目錄，記得設置webapp的目錄屬性
需要在pom.xml指定jsp文件編譯后的存放目錄：META-INF/resources

<resource>	<directory>src/main/webapp</directory>	<targetPath>META-INF/resources</targetPath>	<includes><include>**/*.*</include>	</includes></resource>

創建Controller, 訪問jsp
在application.propertis文件中配置視圖解析器

#配置視圖解析器spring.mvc.view.prefix=/spring.mvc.view.suffix=.jsp手動使用SpringBoot容器獲取對象

關注SpringBoot工程的主啟動類的run方法

@SpringBootApplicationpublic class Application {public static void main(String[] args) {SpringApplication.run(Application.class, args);}}

關注上述run方法的返回值

public static ConfigurableApplicationContext run(Class<?> primarySource, String... args) {return run(new Class[]{primarySource}, args);}

而ConfigurableApplicationContext是ApplicationContext的子接口

public interface ConfigurableApplicationContext extends ApplicationContext, Lifecycle, Closeable {}

所以接收SpringBoot主啟動類的run方法的返回值就可以獲取到SpringBoot容器
之后便可以按照需求調用SpringBoot容器的方法獲取已經注冊到容器中的對象

CommandLineRunner接口與 ApplcationRunner接口

兩個接口

@FunctionalInterfacepublic interface CommandLineRunner {void run(String... args) throws Exception;}@FunctionalInterfacepublic interface ApplicationRunner {void run(ApplicationArguments args) throws Exception;}