小编Bar*_*rge的帖子

我正在使用Boot将WebApp从Spring 3移植到Spring 4.

下面的原始web.xml

<listener>
 <listener-class>org.jasig.cas.client.session.SingleSignOutHttpSessionListener</listener-class>
</listener>

<filter>
 <filter-name>CAS Authentication Filter</filter-name>
 <filter-class>org.jasig.cas.client.authentication.AuthenticationFilter</filter-class>
 <init-param>
    <param-name>casServerLoginUrl</param-name>
    <param-value>https://casserver/login</param-value>
 </init-param>
 <init-param>
    <param-name>serverName</param-name>
    <param-value>http://myapp</param-value>
 </init-param>
</filter>

<filter>
 <filter-name>CAS Validation Filter</filter-name>
 <filter-class>org.jasig.cas.client.validation.Cas20ProxyReceivingTicketValidationFilter</filter-class>
 <init-param>
    <param-name>casServerUrlPrefix</param-name>
    <param-value>https://casserver/login</param-value>
 </init-param>
 <init-param>
    <param-name>serverName</param-name>
    <param-value>http://myapp</param-value>
 </init-param>
 <init-param>
    <param-name>encoding</param-name>
    <param-value>UTF-8</param-value>
 </init-param>
</filter>

<filter>
 <filter-name>CAS Single Sign Out Filter</filter-name>
 <filter-class>org.jasig.cas.client.session.SingleSignOutFilter</filter-class>
</filter>

<filter-mapping>
 <filter-name>CAS Single Sign Out Filter</filter-name>
 <url-pattern>/*</url-pattern>
</filter-mapping>

<filter-mapping>
 <filter-name>CAS Authentication Filter</filter-name>
 <url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
 <filter-name>CAS Validation Filter</filter-name>
 <url-pattern>/*</url-pattern>
</filter-mapping>

<session-config>
 <session-timeout>90</session-timeout>
</session-config>

<context-param>
 <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
 <param-value>messages</param-value>
</context-param>

我正在尝试在AppConfic类中注册所有过滤器,监听器和映射(下面并没有完成,因为它已经无法正常工作......)

@Configuration
public class MyWebApplicationInitializer implements …

我正在用tomcat运行一个spring boot应用程序.

通过类路径加载application.properties时,我的日志记录级别已正确设置.

使用以下java配置从外部加载application.properties时:

@PropertySource(value="file:/some/path/application.properties")

"something"覆盖logging.level.*语句,似乎默认值设置为INFO级别.

可能有什么不对？

考虑以下代码:

• obj在被服务初始化后没有被修改,但是,由于try/catch块,它不被认为是有效的最终版本.有没有办法避免这种情况？

• Optional是否可以被视为避免空值检查的通用方法？在这个例子中,服务会抛出异常而不是返回null,或者总是返回Optional？

  //to be used outside try/catch block, object must be initialized as null
  SomeObject obj = null;
  try {
      obj = someService.getSomeObject();
  } catch (ServiceException e) {
      LOG.error("Something nasty happened", e);
  }
  
  //the service could have returned a null object
  if(obj == null) {
      LOG.error("Obj is null");
  }
  
  //to be used in a lambda, object must be final
  SomeObject objCopy = obj;
  boolean test = someList.stream()
          .anyMatch(o->o.equals(objCopy));
  

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如何使用干净且通用的方式传递错误以在模板中显示它们？

我想通过叠加框消息显示错误.

• 为每次返回传输Error对象？
• 在会话中推送它,并在模板中检查它？
• 使用Ajax方法从模板检查？
• 使用常见的错误模板页面？(不是非常用户友好..)

使用HttpResponseRedirect时我很困惑; 除非使用会话变量,否则无法传递错误.