UnsupportedOperationException异常javax.servlet.ServletRequest.getServerName（）不支持

Question

我想一个CustomWebSecurityExpressionRoot

request.getServerName() 

这里中访问HttpServletRequest.getServerName（）是我的代码：

public class CustomWebSecurityExpressionRoot extends WebSecurityExpressionRoot { 

public CustomWebSecurityExpressionRoot(Authentication a, FilterInvocation fi) { 
    super(a, fi); 
} 

public boolean isLocal() { 
    return "localhost".equals(request.getServerName()); 
} 

}

此表达式根目前正在FilterSecurityInterceptor中设置

@Override 
public void configure(final WebSecurity web) throws Exception { 
    final HttpSecurity http = getHttp(); 
    web.postBuildAction(() -> { 
     FilterSecurityInterceptor fsi = http.getSharedObject(FilterSecurityInterceptor.class); 
     fsi.setSecurityMetadataSource(metadataSource); 
     web.securityInterceptor(fsi); 
    }); 
} 

然后，我有一个数据库条目设置“本地和hasRole（”ADMIN“）”它调用此表达式。

看起来有代理包装ServletRequest作为“DummyRequest”，并且所有其他方法都不受支持。

但是，当这个被执行，我得到以下错误：

java.lang.UnsupportedOperationException: public abstract java.lang.String javax.servlet.ServletRequest.getServerName() is not supported 
at org.springframework.security.web.UnsupportedOperationExceptionInvocationHandler.invoke(FilterInvocation.java:235) ~[spring-security-web-4.2.3.RELEASE.jar:4.2.3.RELEASE] 
at com.sun.proxy.$Proxy134.getServerName(Unknown Source) ~[na:na] 
at javax.servlet.ServletRequestWrapper.getServerName(ServletRequestWrapper.java:207) ~[tomcat-embed-core-8.5.16.jar:8.5.16] 

Answer 1

这里是一个另类

创建接收到请求的参数

@Component 
public class WebChecker { 
     public boolean isLocalHost(Authentication authentication, HttpServletRequest request) { 
      System.out.println("Server name" + request.getServerName()); 
      return "localhost".equals(request.getServerName()); 
     } 
} 

然后在一个简单的bean您的安全配置可以通过访问配置调用isLocalHost方法作为表达式，如下所示：

@Override 
protected void configure(HttpSecurity http) throws Exception { 
    http 
      .authorizeRequests() 
      .antMatchers("/stores").access("@webChecker.isLocalHost(authentication,request)") 

有春天公报网站26.2.1 Referring to Beans in Web Security Expressions

希望更多的信息，这种替代可以帮助你。