CORS问题-请求的资源上没有“访问-控制-允许-起源”标头

Question

我已经创建了两个web应用程序--客户端和服务应用程序。
当客户端和服务应用程序部署在同一个Tomcat实例中时，它们之间的交互很好。
但是当应用程序部署到分开的Tomcat实例（不同的机器）时，当请求发送服务应用程序时，我会得到以下错误。

Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. 
Origin 'http://localhost:8080' is therefore not allowed access. The response had HTTP status code 401

我的客户端应用程序使用JQuery、HTML5和bootstrap。

var auth = "Basic " + btoa({usname} + ":" + {password});
var service_url = {serviceAppDomainName}/services;

if($("#registrationForm").valid()){
    var formData = JSON.stringify(getFormData(registrationForm));
    $.ajax({
        url: service_url+action,
        dataType: 'json',
        async: false,
        type: 'POST',
        headers:{
            "Authorization":auth
        },
        contentType: 'application/json',
        data: formData,
        success: function(data){
            //success code
        },
        error: function( jqXhr, textStatus, errorThrown ){
            alert( errorThrown );
        });
}

@Configuration
@EnableWebMvc
public class CORSConfig extends WebMvcConfigurerAdapter  {
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("*");
    }
}

@Configuration
@EnableGlobalMethodSecurity(prePostEnabled = true)
@EnableWebSecurity
@ComponentScan(basePackages = "com.services", scopedProxy = ScopedProxyMode.INTERFACES)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    @Qualifier("authenticationService")
    private UserDetailsService userDetailsService;

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

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

    @Override
    protected void configure(HttpSecurity http) throws Exception {
       http
                .authorizeRequests()
                .antMatchers("/login").permitAll()
                .anyRequest().fullyAuthenticated();
        http.httpBasic();
        http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
        http.csrf().disable();
    }

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

    @Bean
    public DaoAuthenticationProvider authenticationProvider() {
        DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();
        authenticationProvider.setUserDetailsService(userDetailsService);
        authenticationProvider.setPasswordEncoder(passwordEncoder());
        return authenticationProvider;
    }
}

 <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
            <version>3.2.3.RELEASE</version>
</dependency>
<dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
            <version>3.2.3.RELEASE</version>
</dependency>

Answer 1

CORS的飞行前请求使用HTTP选项而没有凭据，请参见跨源资源共享：

否则，提出飞行前请求。使用referrer source作为覆盖referrer source，并设置手动重定向标志和块cookies标志，使用方法选项和以下附加约束，从origin source origin获取请求URL：

• 包括一个Access-Control-Request-Method标头，其作为标头字段值为请求方法（即使它是一个简单的方法）。
• 如果author请求头不为空，则包括一个Access-Control-Request-Headers标头，标头字段值为as header字段值为一个以逗号分隔的表头字段名列表，每个表头字段名按词典顺序从author请求头中按词典顺序转换为ASCII小写（即使一个或多个标头为简单标头）。
• 排除作者请求标题。
• 排除用户凭据。
• 排除请求实体正文。

@Override
protected void configure(HttpSecurity http) throws Exception {
   http
       .authorizeRequests()
           .antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
           .antMatchers("/login").permitAll()
           .anyRequest().fullyAuthenticated()
           .and()
       .httpBasic()
           .and()
       .sessionManagement()
           .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
           .and()
       .csrf().disable();
}

@Configuration
@EnableWebMvc
public class CORSConfig extends WebMvcConfigurerAdapter  {
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("*");
    }
}

确保首先处理CORS的最简单方法是使用CorsFilter。用户可以使用以下方法提供CorsConfigurationSource，从而将CorsFilter与Spring Security集成在一起：

@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

  @Override
  protected void configure(HttpSecurity http) throws Exception {
      http
          // by default uses a Bean by the name of corsConfigurationSource
          .cors().and()
          ...
  }

  @Bean
  CorsConfigurationSource corsConfigurationSource() {
      CorsConfiguration configuration = new CorsConfiguration();
      configuration.setAllowedOrigins(Arrays.asList("https://example.com"));
      configuration.setAllowedMethods(Arrays.asList("GET","POST"));
      UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
      source.registerCorsConfiguration("/**", configuration);
      return source;
  }
}