내 web.xml에 오류가 있습니다.

Question

서블릿을 추가하려고 할 때 web.xml에 오류가있는 이유는 무엇입니까?

<servlet> 
    <servlet-name>ClientServlet</servlet-name> 
    <servlet-class>org.task.ClientServlet</servlet-class> 
    <servlet-name>FactoryServlet</servlet-name> 
    <servlet-class>org.task.FactoryServlet</servlet-class> 
    <servlet-name>TraderServlet</servlet-name> 
    <servlet-class>org.task.TraderServlet</servlet-class> 
    </servlet> 
    <servlet-mapping> 
    <servlet-name>ClientServlet</servlet-name> 
    <url-pattern>/ClientServlet</url-pattern> 
    <servlet-name>FactoryServlet</servlet-name> 
    <url-pattern>/FactoryServlet</url-pattern> 
     <servlet-name>TraderServlet</servlet-name> 
    <url-pattern>/TraderServlet</url-pattern> 
    </servlet-mapping> 

Answer 1

구조가 잘못되었습니다. 다음과 같은 것을 원합니다.

<servlet> 
    <servlet-name>ClientServlet</servlet-name> 
    <servlet-class>org.task.ClientServlet</servlet-class> 
</servlet> 

<servlet> 
    <servlet-name>FactoryServlet</servlet-name> 
    <servlet-class>org.task.FactoryServlet</servlet-class> 
</servlet> 

<servlet> 
    <servlet-name>TraderServlet</servlet-name> 
    <servlet-class>org.task.TraderServlet</servlet-class> 
</servlet> 

<servlet-mapping> 
    <servlet-name>ClientServlet</servlet-name> 
    <url-pattern>/ClientServlet</url-pattern> 
</servlet-mapping> 

<servlet-mapping> 
    <servlet-name>FactoryServlet</servlet-name> 
    <url-pattern>/FactoryServlet</url-pattern> 
</servlet-mapping> 

<servlet-mapping> 
    <servlet-name>TraderServlet</servlet-name> 
    <url-pattern>/TraderServlet</url-pattern> 
</servlet-mapping>