出现这样错误

HTTP Status 404 - There is no Action mapped for namespace / and action name LoginAction.

type Status report

message There is no Action mapped for namespace / and action name LoginAction.

description The requested resource (There is no Action mapped for namespace / and action name LoginAction.) is not available.

代码：

<form action="LoginAction.action" method="post">

  用户名：<input type="text" name="username">

  密码：<input type="password" name="password"> 

  <input type="submit" value="提交"/>

  </form>

<package name="default" extends="struts-default">

<action name="LoginAction" method="login"  class="com.xaccp.Action.LoginAction">

<result>/success.jsp</result>

</action>

</package>

public class LoginAction extends ActionSupport {

private String username;

private String password;

public String login(){

System.out.println(username);

return SUCCESS;

}

public String getUsername() {

return username;

}

public void setUsername(String username) {

this.username = username;

}

public String getPassword() {

return password;

}

public void setPassword(String password) {

this.password = password;

}

}

求解