[angular] Access blocked by CORS policy: Response to preflight request doesn't pass access control check

If you are using Spring as Back-End server and especially using Spring Security then i found a solution by putting http.cors(); in the configure method. The method looks like that:

protected void configure(HttpSecurity http) throws Exception {
        http
                .csrf().disable()
                .authorizeRequests() // authorize
                .anyRequest().authenticated() // all requests are authenticated
                .and()
                .httpBasic();

        http.cors();
}

Examples related to angular

error NG6002: Appears in the NgModule.imports of AppModule, but could not be resolved to an NgModule class error TS1086: An accessor cannot be declared in an ambient context in Angular 9 TS1086: An accessor cannot be declared in ambient context @angular/material/index.d.ts' is not a module Why powershell does not run Angular commands? error: This is probably not a problem with npm. There is likely additional logging output above Angular @ViewChild() error: Expected 2 arguments, but got 1 Schema validation failed with the following errors: Data path ".builders['app-shell']" should have required property 'class' Access blocked by CORS policy: Response to preflight request doesn't pass access control check origin 'http://localhost:4200' has been blocked by CORS policy in Angular7

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Are all Spring Framework Java Configuration injection examples buggy? Two Page Login with Spring Security 3.2.x Access blocked by CORS policy: Response to preflight request doesn't pass access control check Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured ApplicationContextException: Unable to start ServletWebServerApplicationContext due to missing ServletWebServerFactory bean Failed to auto-configure a DataSource: 'spring.datasource.url' is not specified Spring Data JPA findOne() change to Optional how to use this? After Spring Boot 2.0 migration: jdbcUrl is required with driverClassName The type WebMvcConfigurerAdapter is deprecated No converter found capable of converting from type to type

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