SpringBoot代码段

一、数据库配置

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/biubiu?serverTimezone=GMT%2B8&useSSL=true
    username: root
    password: root
mybatis:
  mapper-locations: classpath:mapper/*Mapper.xml
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

二、AOP切面配置

@Aspect
@Component
public class WebLogAspect {

    private static final Logger LOGGER = LoggerFactory.getLogger(WebLogAspect.class);

    @Pointcut("execution(public * com.biubiu.my.controller.*.*(..))")
    public void webLog() {
    }

    @Before("webLog()")
    public void doBefore(JoinPoint joinPoint) throws Throwable {
    }

    @AfterReturning(value = "webLog()", returning = "ret")
    public void doAfterReturning(Object ret) throws Throwable {
    }

    @Around("webLog()")
    public Object doAround(ProceedingJoinPoint joinPoint) throws Throwable {
        long startTime = System.currentTimeMillis();
        //执行代码
        Object result = joinPoint.proceed();
        //接口执行时间
        long elapsed = System.currentTimeMillis() - startTime;

        //other
        //获取当前请求对象
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
    }
}

三、跨域处理

• 单接口/方法处理 @CrossOrigin
• 全局处理

@Configuration
public class CorsConfig {

    @Bean
    public WebMvcConfigurer corsConfigurer() {
        return new WebMvcConfigurer() {
            @Override
            //重写父类提供的跨域请求处理的接口
            public void addCorsMappings(CorsRegistry registry) {
                //添加映射路径
                registry.addMapping("/**")
                        //放行哪些原始域
                        .allowedOriginPatterns("*")
                        //是否发送Cookie信息
                        .allowCredentials(true)
                        //放行哪些原始域(请求方式)
                        .allowedMethods("GET", "POST", "PUT", "DELETE")
                        //放行哪些原始域(头部信息)
                        .allowedHeaders("*")
                        //配置预检请求的有效时间
                        .maxAge(3600)
                        //暴露哪些头部信息（因为跨域访问默认不能获取全部头部信息）
                        .exposedHeaders("Header1", "Header2");
            }
        };
    }
}

四、拦截器

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new LoginInterceptor())
                .addPathPatterns("/ufs/rest/**")
                .excludePathPatterns("/**/login");
    }
}

@Component
public class LoginInterceptor extends HandlerInterceptorAdapter {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        return true;
    }
}