struts2 传值问题，希望大家帮我看看

Question

jsp代码
[code="java"]

[/code]

实体类
[code="java"]
package com.yunwang.entity;

import java.util.HashSet;
import java.util.Set;

/**

• TRole entity. @author MyEclipse Persistence Tools
  */
  @SuppressWarnings("unchecked")
  public class TRole implements java.io.Serializable {

  /**

  • */ private static final long serialVersionUID = 1L; // Fields

  private Long sn;
  private String roleName;
  private Long orderNum;
  private String memo;
  private String createDate;
  private String flag;
  private Set TModules = new HashSet(0);
  private Set TGroups = new HashSet(0);
  private Set TActionAccesses = new HashSet(0);

  // Constructors

  /** default constructor */
  public TRole() {
  }

  /** minimal constructor */
  public TRole(String roleName, Long orderNum, String createDate, String flag) {
  this.roleName = roleName;
  this.orderNum = orderNum;
  this.createDate = createDate;
  this.flag = flag;
  }

  /** full constructor */
  public TRole(String roleName, Long orderNum, String memo,
  String createDate, String flag, Set TModules, Set TGroups,
  Set TActionAccesses) {
  this.roleName = roleName;
  this.orderNum = orderNum;
  this.memo = memo;
  this.createDate = createDate;
  this.flag = flag;
  this.TModules = TModules;
  this.TGroups = TGroups;
  this.TActionAccesses = TActionAccesses;
  }

  // Property accessors

  public Long getSn() {
  return this.sn;
  }

  public void setSn(Long sn) {
  this.sn = sn;
  }

  public String getRoleName() {
  return this.roleName;
  }

  public void setRoleName(String roleName) {
  this.roleName = roleName;
  }

  public Long getOrderNum() {
  return this.orderNum;
  }

  public void setOrderNum(Long orderNum) {
  this.orderNum = orderNum;
  }

  public String getMemo() {
  return this.memo;
  }

  public void setMemo(String memo) {
  this.memo = memo;
  }

  public String getCreateDate() {
  return this.createDate;
  }

  public void setCreateDate(String createDate) {
  this.createDate = createDate;
  }

  public String getFlag() {
  return this.flag;
  }

  public void setFlag(String flag) {
  this.flag = flag;
  }

  public Set getTModules() {
  return this.TModules;
  }

  public void setTModules(Set TModules) {
  this.TModules = TModules;
  }

  public Set getTGroups() {
  return this.TGroups;
  }

  public void setTGroups(Set TGroups) {
  this.TGroups = TGroups;
  }

  public Set getTActionAccesses() {
  return this.TActionAccesses;
  }

  public void setTActionAccesses(Set TActionAccesses) {
  this.TActionAccesses = TActionAccesses;
  }

}

[/code]

struts2配置信息
[code="java"]

<package name="employee"  extends="struts-default">
    <!-- 验证用户是否登录 -->
    <interceptors>
        <interceptor name="permission" class="com.yunwang.web.interceptor.PermissionInterceptor"/>
         <!--定义一个包含权限检查的拦截器栈--> 
        <interceptor-stack name="permissionStack">
         <!--配置内建默认拦截器,限制性系统自带的拦截器-->   
            <interceptor-ref name="defaultStack"/>
            <!--配置自定义的拦截器,在执行自定义的拦截器-->   
            <interceptor-ref name="permission" />
        </interceptor-stack>
    </interceptors>
    <!-- 全包拦截 -->
    <default-interceptor-ref name="permission" /> 
    <global-results>   
        <result name="forwork" type="redirectAction">PermissionAction.action</result>   
    </global-results>  

    <!-- 模块管理 -->
    <action name="moduleAction" class="moduleAction" >     
    </action>

    <!-- 部门管理  -->
    <action name="deptPanelAction" class="deptPanelAction" >     
    </action>

    <!-- 用户管理 -->
    <action name="usersAction" class="usersAction"></action>

    <!-- 权限管理 -->

    <action name="roleAction"  class="roleAction" ></action>

    <!-- 所有页面的跳转 -->
    <action name="forwordAction" class="forwordIndexAction">
        <result name="long-source" >/WEB-INF/jsp/home/index.jsp</result>
        <result name="todeptPanel" >/WEB-INF/jsp/dept/deptPanel.jsp</result>     
        <result name="toUserPanel" >/WEB-INF/jsp/dept/userPanel.jsp</result>  
        <result name="toRolePanel" >/WEB-INF/jsp/RoleManage/roleMain.jsp</result>     
    </action>

</package>

[/code]

action 代码
[code="java"]
package com.yunwang.web.action;

import com.opensymphony.xwork2.ActionSupport;
import com.yunwang.biz.IRoleBiz;
import com.yunwang.entity.TRole;

public class RoleAction extends ActionSupport {

/**
 * 
 */
private static final long serialVersionUID = 1L;

private IRoleBiz roleBiz;

private TRole role;

public TRole getRole() {
    return role;
}

public void setRole(TRole role) {
    this.role = role;
}

public String addRole(){
    System.out.println("sssssssssssssssssssssssssssssssss");
    System.out.println("ssssss==="+role.getRoleName());


    return null;
}

public IRoleBiz getRoleBiz() {
    return roleBiz;
}

public void setRoleBiz(IRoleBiz roleBiz) {
    this.roleBiz = roleBiz;
}

}
[/code]

在点击提交后获取不到值，System.out.println("ssssss==="+role.getRoleName());什么都没输出，估计空指针了，不知道那里配置信息写错了，导致得不到值。

Answer 1

只能说楼主太粗心了。不知楼主是否注意到你的struts.xml文件中的这句话：

[code="java"]

<!-- 全包拦截 -->

[/code]

很显然这句有问题，你配的那个拦截器栈就没用了，当改为：
[code="java"]

<!-- 全包拦截 -->

[/code]