GWT之怪现象

同样的一段代码,加上一句 Window.alert("Debug: 0000");   就可以继续执行,否则不行!!真是怪了.. 代码如下:

java 代码

private void initLeftList() {

        ufRoleService.loadAllUserRole(new AsyncCallback() {
            public void onFailure(Throwable caught) {
                Window.alert("获得角色信息时,数据库出错!!");
            }
            public void onSuccess(Object result) {
                List roles = (List) result;
                if (roles != null) {
                    int count = 0;
//                  Window.alert("Debug: 0000");
                    roleTable.resize(roles.size(), 2);
                    for (Iterator iter = roles.iterator(); iter.hasNext();) {
                        UfRoleDTO element = (UfRoleDTO) iter.next();
                        roleTable.setText(count, 0, element.getRolename());
                        roleTable.getCellFormatter().
addStyleName(count, 0, "financeTableRowWithCheckBox2");
                        checkBoxs = new CheckBox[allFuncNodes.size()];
                        for (int i = 0; i < allFuncNodes.size(); i++) {
                            checkBoxs[i] = new CheckBox();
                            UfFuncregisterDTO dto = (UfFuncregisterDTO) allFuncNodes.get(i);
                            checkBoxs[i].setText(dto.getFunName());
                        }
                        Window.alert("Debug: 1111");
                        // 得到当前选择的用户的权限节点
                        ufRoleService.findByPk(element.getPkRole().toString(), new AsyncCallback() {
                            public void onFailure(Throwable caught) {

                                Window.alert("获得角色信息出错!!");
                            }
                            public void onSuccess(Object result) {

                                if(result == null) {
                                    Window.alert("角色为空!!");
                                    return ;
                                }
                                UfRoleDTO roleDTO = (UfRoleDTO) result;
                                if(roleDTO.getUfRoleFuncs() != null) {
                                    //角色功能关联
                                    Iterator iter = roleDTO.getUfRoleFuncs().iterator();
                                    while(iter.hasNext()) {
                                        UfRoleFuncDTO roleFuncDTO = (UfRoleFuncDTO) iter.next();
                                        //得到功能节点主键
                                        UfFuncregisterDTO funDTO = roleFuncDTO.getUfFuncregisterDTO();
                                        validFunc.add(funDTO);
                                    }
                                }
                            }
                        });
//                      Window.alert("Debug: 2222");
//                      将构造好的CheckBox加入到面版中
                        HorizontalPanel hPanel = new HorizontalPanel();
                        for (int i = 0; i < checkBoxs.length; i++) {
                            hPanel.add(checkBoxs[i]);
                        }
                        roleTable.setWidget(count, 1, hPanel);
                        roleTable.getCellFormatter().addStyleName(count, 1, "financeTableRowWithCheckBox");
                        count ++;
                    }
                }
            }
        });
    }

 

 

 

 

评论

3 楼 jvincent 2006-12-25  

终于搞定了..原来是使用了两个数据没有全部加在完成就使用了.结果报了空指针..

2 楼 jvincent 2006-12-22  

还是不行啊..为什么啊?

1 楼 jvincent 2006-12-21  

<p>自己解决..</p>
<p>方法:把第7行的代码改为:</p>
<div class='code_title'>java 代码</div>
<div class='dp-highlighter'>
<div class='bar'>
<ol class='dp-j'>
    <li class='alt'><span><span class='keyword'>if</span><span>(role == </span><span class='keyword'>null</span><span>) {   </span></span></li>
    <li class=''><span>   Window.alert(</span><span class='string'>"角色为空!!"</span><span>);l   </span></li>
    <li class='alt'><span>}   </span></li>
    <li class=''><span>.....  </span></li>
</ol>
</div>
不知是何原因....研究中.......</div>