Solve the problem of SpringBoot integration Swagger reporting error osweb.servlet.PageNotFound No mapping for GET

problem

o.s.web.servlet.PageNotFound : No mapping for GET

solve

Currently I met these four cases, we have to add the follow-up, the condemnation ~
① redirected to the
problem ② annotations
③SwaggerConfig configuration class
④CorsConfig cross-domain configuration

①Redirect

/**
 * 解决swagger死循环问题
 * 视具体情况用,若控制台报错 No mapping for GET /aifruit/null/swagger-resources/configuration/security
 * 则使用下面代码
 * 下面这几个地址会一直轮询，改为重定向
 * /null/swagger-resources/configuration/ui
 * /null/swagger-resources/configuration/security
 * /null/swagger-resources
 */
@Override
public void addViewControllers(ViewControllerRegistry registry) {
    
    
    registry.addRedirectViewController("/null/api-docs",
            "/api-docs").setKeepQueryParams(true);
    registry.addRedirectViewController("/null/swagger-resources/configuration/ui",
            "/swagger-resources/configuration/ui");
    registry.addRedirectViewController("/null/swagger-resources/configuration/security",
            "/swagger-resources/configuration/security");
    registry.addRedirectViewController("/null/swagger-resources", "/swagger-resources");
}

②Annotation problem

1. It may be @RequestMapping("xxxx")that the xxxxaccess path in the class is misconfigured

• Solution: Check whether the accessed URL is correct

2. It may be methodological @PostMappingor @GetMappingnot written or written wrong
   

③SwaggerConfig configuration class

SwaggerConfigThe configuration class is missing something, check it:

• @Configuration
• @EnableSwagger2
• .apis(RequestHandlerSelectors.basePackage("com.melodyjerry.config"))
  

④CorsConfig cross-domain configuration

This may happen after the interceptor is added. It should be that the interceptor failed to load the resource file successfully. Will be WebMvcConfigurationSupportmodified to WebMvcConfigurerAdapterit.

Reference

[1] Annotation Configuration Replacement for mvc:resources - Spring