Common tools (continuous update)

1. Spring's own MD5 encryption

DigestUtils.md5DigestAsHex("xxxx".getBytes())

2. SpringMvc intercepts both URL and static resource files

@Configuration
public class MyInterceptorConfig implements WebMvcConfigurer {
    
    
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
    
    
        // 实现 WebMvcConfigurer 不会导致静态资源被拦截
        registry.addInterceptor(new MyInterceptor()).addPathPatterns("/**");
    }
}

3. The back end in vue defines the String type, and the front end must input numbers, which are written in input

@change="(e) => {e.target.value = e.target.value.replace(/[^0-9.]/g,'')}"