我正在用SpringBoot和Angular为一个期末项目创建一个投资组合网站，但我遇到了很多问题。
在localhost上一切工作都很完美，但是当我在Render上进行部署时（背面），数据不会显示在前面。
这就是我得到的：enter image description here
我在所有的控制器中设置了这样的头文件：enter image description here
这是主安全：

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class MainSecurity extends WebSecurityConfigurerAdapter {

    @Autowired
    UserDetailsImpl userDetailsServicesImpl;

    @Autowired
    JwtEntryPoint jwtEntryPoint;

    @Bean
    public JwtTokenFilter jwtTokenFilter() {
        return new JwtTokenFilter();
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.cors().and().csrf().disable()
                .authorizeRequests()
                .antMatchers("**").permitAll()
                .anyRequest().authenticated()
                .and()
                .exceptionHandling().authenticationEntryPoint(jwtEntryPoint)
                .and()
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
        http.addFilterBefore(jwtTokenFilter(), UsernamePasswordAuthenticationFilter.class);
    }

    @Override
    protected AuthenticationManager authenticationManager() throws Exception {
        return super.authenticationManager();
    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsServicesImpl).passwordEncoder(passwordEncoder());
    }

}