如果我须要使得一个办法采取异步执行
如果我须要使得一个办法采取异步执行,并且执行的时候须要指定线程池,那么我须要做三步操作。
1、配置线程池
@Configuration
@EnableAsync
public class ExecutorConfig implements AsyncConfigurer {@Bean("asyncServiceExecutor")
@Override
public Executor getAsyncExecutor() {ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
// 配置外围线程数
executor.setCorePoolSize(10);
// 配置最大线程数
executor.setMaxPoolSize(20);
// 配置队列大小
executor.setQueueCapacity(99999);
// 配置线程池中的线程的名称前缀
executor.setThreadNamePrefix("async-service-");
// rejection-policy:当 pool 曾经达到 max size 的时候,如何解决新工作
// CALLER_RUNS:不在新线程中执行工作,而是由调用者所在的线程来执行
executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
// 执行初始化
executor.initialize();
return executor;
}
}
2、启用异步办法注解
@EnableAsync
3、在办法上开启注解,并配置线程池
@Async("asyncServiceExecutor")
springboot 系统启动时初始化数据
@Component
@Slf4j
public class ApplicationRunnerImpl implements ApplicationRunner {
@Override
public void run(ApplicationArguments args) {}}
配置拦截器
1、增加拦截器配置文件
@Configuration
public class MyWebConfig implements WebMvcConfigurer {@Value("${api.contextPath}")
private String apiContextPath;
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) { }
public String getLocalFileServerDir() {return System.getProperty("user.dir") + "/data/";
}
@Resource
private SessionInterceptor sessionInterceptor;
@Override
public void addInterceptors(InterceptorRegistry registry) {registry.addInterceptor(sessionInterceptor)
.addPathPatterns(apiContextPath + "/**")
.excludePathPatterns(apiContextPath + "/user/test")
.excludePathPatterns(apiContextPath + "/***")
.excludePathPatterns(apiContextPath + "/log/**");
}
@Override
public void addCorsMappings(CorsRegistry registry) {registry.addMapping("/**")
.allowedOrigins("*")
.allowCredentials(true)
.allowedMethods("GET", "POST", "DELETE", "PUT", "PATCH")
.maxAge(3600 * 24)
.allowedHeaders("*")// 容许头部设置
.allowCredentials(true); // 是否发送 cookie
}
}