一、springboot加载xml配置

1. bean.xml文件

@Configuration
//spring中的注解。导入xml配置
@ImportResource("classpath:/bean.xml")
public class WebMvcConfig {}

2. 配置类

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"><bean class="org.lyl.xml.controller.HelloController" id="hello"/>
</beans>

3. 测试

@SpringBootTest
class XmlApplicationTests {@AutowiredHelloController helloController;@Testvoid contextLoads() {System.out.println(helloController.hello());}}

二、系统启动任务

介绍：项目启动时会启动一次

1. CommandLineRunner

• MyCommandLineRunner1

@Component
//设置优先级：数越大，优先级越低
@Order(value = 99)
public class MyCommandLineRunner1 implements CommandLineRunner {//args:从CommandlinerunnerApplication.java中接收过来//run:要执行的系统启动任务位置@Overridepublic void run(String... args) throws Exception {System.out.println("MyCommandLineRunner1--------" + Arrays.toString(args));}
}

• MyCommandLineRunner2

@Component
//设置优先级：数越大，优先级越低
@Order(value = 98)
public class MyCommandLineRunner2 implements CommandLineRunner {//args:从CommandlinerunnerApplication.java中接收过来//run:要执行的系统启动任务位置@Overridepublic void run(String... args) throws Exception {System.out.println("MyCommandLineRunner2--------" + Arrays.toString(args));}
}

• CommandlinerunnerApplication

@SpringBootApplication
public class CommandlinerunnerApplication {//方法一：在配置启动的spring boot项目--Configuration--Environment--Program arguments中设置。个数用空格隔开//方法二：运用maven的package进行项目打包，然后在Terminal中进入target中，输入java -jar 所用jar包 启动时要设置的任务的args（多个用空格隔开）public static void main(String[] args) {SpringApplication.run(CommandlinerunnerApplication.class, args);}}

2. ApplicationRunner

• MyApplicationRunner1

@Component
@Order(value = 99)
//与commandLineRunner没有太大的区别，只是参数不一样
public class MyApplicationRunner1 implements ApplicationRunner {@Overridepublic void run(ApplicationArguments args) throws Exception {//获取所有的args.//带key的args在写的时候需要加--key=valueString[] sourceArgs = args.getSourceArgs();System.out.println("sourceArgs1-----" + Arrays.toString(sourceArgs));//获取不带key的argsList<String> nonOptionArgs = args.getNonOptionArgs();System.out.println("nonOptionArgs1-----" + nonOptionArgs);//获取带key的argsSet<String> optionNames = args.getOptionNames();for (String optionName : optionNames) {System.out.println("optionNames1-------" + optionName + ":" + args.getOptionValues(optionName));}}
}

• MyApplicationRunner2

@Component
//@Order设置优先级
@Order(value = 98)
//与commandLineRunner没有太大的区别，只是参数不一样
public class MyApplicationRunner2 implements ApplicationRunner {@Overridepublic void run(ApplicationArguments args) throws Exception {//获取所有的argsString[] sourceArgs = args.getSourceArgs();System.out.println("sourceArgs2----" + Arrays.toString(sourceArgs));//获取不带key的argsList<String> nonOptionArgs = args.getNonOptionArgs();System.out.println("nonOptionArgs2--------" + nonOptionArgs);//获取带key的argsSet<String> optionNames = args.getOptionNames();for (String optionName : optionNames) {System.out.println("optionNames2------" + optionName + ":" + args.getOptionValues(optionName));}}
}

• ApplicationrunnerApplication

@SpringBootApplication
public class ApplicationrunnerApplication {//方法一：在配置启动的spring boot项目--Configuration--Environment--Program arguments中设置。个数用空格隔开。其中含key的args用--key=value格式。//方法二：运用maven的package进行项目打包，然后在Terminal中进入target中，输入java -jar 所用jar包 启动时要设置的任务的args（多个用空格隔开）public static void main(String[] args) {SpringApplication.run(ApplicationrunnerApplication.class, args);}}

• 运行结果
  

三、整合Web组件

1. ServletApplication

@SpringBootApplication
@ServletComponentScan(basePackages = "org.lyl.servlet")
public class ServletApplication {public static void main(String[] args) {SpringApplication.run(ServletApplication.class, args);}}

2. MyServlet

//通过@WebServlet来进行注册
@WebServlet(urlPatterns = "/myServlet")
public class MyServlet extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {System.out.println("MyServlet");}
}

3. MyFilter

//urlPattern:要拦截的地址
@WebFilter(urlPatterns = "/*")
public class MyFilter implements Filter {@Overridepublic void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {System.out.println("MyFilter");filterChain.doFilter(servletRequest,servletResponse);}
}

4. MyListener

@WebListener
public class MyListener implements ServletRequestListener {@Overridepublic void requestDestroyed(ServletRequestEvent sre) {System.out.println("MyListener-----requestDestroyed");}@Overridepublic void requestInitialized(ServletRequestEvent sre) {System.out.println("MyListener-----requestInitialized");}
}

5. 访问：http://localhost:8080/myServlet
6. 运行结果
   

四、路径映射

1. WebMvcConfig

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {//使只显示样式的动态页面不需要通过控制器进行访问@Overridepublic void addViewControllers(ViewControllerRegistry registry) {//setViewName：动态页面的名称。//addViewController：要访问的路径registry.addViewController("/login").setViewName("login");}
}

五、类型转换器

1. 自定义字符串转日期组件

@Component
public class StringToDateConverter implements Converter<String, Date> {@Overridepublic Date convert(String source) {SimpleDateFormat sdf  = new SimpleDateFormat("yyyy-MM-dd");if(source != null && !"".equals(source)) {try {return sdf.parse(source);} catch (ParseException e) {e.printStackTrace();}}return null;}
}

六、整合AOP

1. pom.xml

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-aop</artifactId></dependency>

2. LogComponent

//@Component:定义为一个spring组件
@Component
//@Aspect：表示为一个切面
@Aspect
public class LogComponent {//@Pointcut:定义拦截规则//excution:// 第一个*：代表返回值.// 第二个*：代表任意类.// 第三个*：代表任意方法.// ..：参数任意(1.参数类型任意。2.参数个数任意)@Pointcut("execution(* org.lyl.aop.service.*.*(..) )")public void pc1() {}//前置通知@Before(value = "pc1()")public void before(JoinPoint joinPoint) {String name = joinPoint.getSignature().getName();System.out.println("before----------" + name);}//后置通知@After(value = "pc1()")public void after(JoinPoint joinPoint) {String name = joinPoint.getSignature().getName();System.out.println("after----------" + name);}//返回通知//在该方法中获取拦截方法的返回值（returning）@AfterReturning(value = "pc1()",returning = "result")public void afterReturning(JoinPoint joinPoint,Object result) {String name = joinPoint.getSignature().getName();System.out.println("afterReturning----------" + name + "--------" + result);}//异常通知//throwing:抛出的异常是什么@AfterThrowing(value = "pc1()",throwing = "e")public void afterThrowing(JoinPoint joinPoint,Exception e) {String name = joinPoint.getSignature().getName();System.out.println("afterThrowing----------" + name + "---------" + e.getMessage());}//环绕通知:是以上四个的综合//返回的值会影响到真正方法的值@Around(value = "pc1()")public Object around(ProceedingJoinPoint pjp) throws Throwable {//在proceed前面写的就先执行Object proceed = pjp.proceed();//afterReturning(pjp,proceed);return "123";}
}

七、自定义欢迎页

介绍：在静态页面路径下或者动态路径下存在index的页面，则访问时直接加载该页面。
注：先静后动

八、自定义favicon

1. favicon制作网站:https://tool.lu/favicon
2. 存放位置：1.resources/static。2.resources
3. 优先级：resources/static>resources

九、除去自动化配置

1. 第一种方法

--application.properties
#第一种方法：去除自动化配置
#spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration

2. 第二种方法

//第二种方法：去除WebMvcAutoConfiguration.class
//@SpringBootApplication(exclude = WebMvcAutoConfiguration.class)
@SpringBootApplication
public class WelcomeApplication {public static void main(String[] args) {SpringApplication.run(WelcomeApplication.class, args);}
}