求可以解决cors 跨域的方法！！！

尝试过很多种cors，可是都不行。
加过filter，在filter里面设置各种header。不行！
在web.xml里面加过corsfilter和引入jar包。不行！
用Springboot的，加CorsConfig的，在里面加标签的，设置的。不行！
结果还是没解决这个跨域的问题，纠结好久了~
有没有哪位大神亲身试过用cors的，并成功解决跨域问题，求帮助！！！
（希望可以给出比较具体代码或思路，谢谢！）

如果不考虑IE8和IE8以下版本，那么在 web.xml里面加过corsfilter和引入jar包 ，是个很不错的选择 。
我的配置 ：

<!-- cors filter begin 利用请求头处理跨域问题，不支持IE8及以下版本-->

CORS
com.thetransactioncompany.cors.CORSFilter

cors.allowOrigin



cors.supportedMethods
GET, POST, HEAD, PUT, DELETE


cors.supportedHeaders
Accept, Origin, X-Requested-With, Content-Type, Last-Modified


cors.exposedHeaders
Set-Cookie


cors.supportsCredentials
true



CORS
/

同时，在请求端 ，你需要添加参数 crossDomain:true； 而且访问需要加入http请求头。 如下

  <!--  cors filter begin 利用请求头处理跨域问题，不支持IE8及以下版本-->
<filter>
        <filter-name>CORS</filter-name>
        <filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>
    <init-param>
            <param-name>cors.allowOrigin</param-name>
            <param-value>*</param-value>
    </init-param>
    <init-param>
            <param-name>cors.supportedMethods</param-name>
            <param-value>GET, POST, HEAD, PUT, DELETE</param-value>
    </init-param>
    <init-param>
            <param-name>cors.supportedHeaders</param-name>
            <param-value>Accept, Origin, X-Requested-With, Content-Type, Last-Modified</param-value>
    </init-param>
    <init-param>
            <param-name>cors.exposedHeaders</param-name>
            <param-value>Set-Cookie</param-value>
    </init-param>
    <init-param>
            <param-name>cors.supportsCredentials</param-name>
            <param-value>true</param-value>
    </init-param>
</filter>
  <filter-mapping>
        <filter-name>CORS</filter-name>
        <url-pattern>/*</url-pattern>
</filter-mapping>

1：cors配置允许跨域

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import java.util.ArrayList;
import java.util.List;
/**

• Created by Msater Zg on 2017/4/3.
  /
  @Configuration
  public class CorsConfig extends WebMvcConfigurerAdapter {
  @Override
  public void addCorsMappings(CorsRegistry registry) {
  registry.addMapping("/*")
  .allowedOrigins("*")
  .allowCredentials(true)
  .allowedMethods("GET", "POST", "DELETE", "PUT")
  .maxAge(3600);
  }
  private CorsConfiguration buildConfig() {
  CorsConfiguration corsConfiguration = new CorsConfiguration();
  List list = new ArrayList<>();
  list.add("*");
  corsConfiguration.setAllowedOrigins(list);
  corsConfiguration.addAllowedOrigin("*"); // 1
  corsConfiguration.addAllowedHeader("*"); // 2
  corsConfiguration.addAllowedMethod("*"); // 3
  return corsConfiguration;
  }
  @Bean
  public CorsFilter corsFilter() {
  UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
  source.registerCorsConfiguration("/**", buildConfig()); // 4

  return new CorsFilter(source);
  

  }
  }
  2：拦截器拦截方法获取token
  1：拦截器配置
  import org.springframework.web.servlet.HandlerInterceptor;
  import org.springframework.web.servlet.ModelAndView;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  /**

• Created by Msater Zg on 2017/4/5.

• 拦截器
  /
  public class ApiInterceptor implements HandlerInterceptor {
  @Override
  public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
  System.out.println("拦截了");
  return true;
  }
  @Override
  public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
  System.out.println("拦截了");
  }
  @Override
  public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
  System.out.println("拦截了");
  }
  }
  2： 拦截器管理工具
  import org.springframework.context.annotation.Configuration;
  import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
  import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
  /*

• Created by Msater Zg on 2017/4/5.

• 拦截器管理工具
  /
  @Configuration
  public class MyWebAppConfigurer extends WebMvcConfigurerAdapter {
  @Override
  public void addInterceptors(InterceptorRegistry registry) {
  // 多个拦截器组成一个拦截器链
  // addPathPatterns 用于添加拦截规则
  // excludePathPatterns 用户排除拦截
  registry.addInterceptor(new ApiInterceptor()).addPathPatterns("/*"); //对来自/user/** 这个链接来的请求进行拦截
  super.addInterceptors(registry);
  }
  }