我用的是ExtJS 4.0.7,代码的用作判断代码是否已存在,调用callback后为什么response.responseText没有返回值?
请指教,谢谢!1. js items:[
{xtype: 'textfield',
name: 'cscode',
maxLength: 2,
disabled: true,
listeners: {
blur: function(){
var value = specForm.getForm().findField('cscode').getValue();
var exist = false;
Ext.Ajax.request({
url: 'investaction.jsp?action=isExistSpecCode',
async: false,
params: {"cscode": value},
method: 'POST',
callback: function(options, response){
msg = ["return:", response.responseText];
alert(msg.join(''));
}
});
return exist;
}
},
fieldLabel: '专业代码'},2. 服务器端代码 investaction.jsp
<%
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
String action = request.getParameter("action"); if(action.equals("isExistSpecCode")){
String isExist = "false";
String scode = request.getParameter("cscode");
if(invest.isExistSpeccode(scode)){
isExist = "true";
}
response.getWriter().write(isExist);
%》
请指教,谢谢!1. js items:[
{xtype: 'textfield',
name: 'cscode',
maxLength: 2,
disabled: true,
listeners: {
blur: function(){
var value = specForm.getForm().findField('cscode').getValue();
var exist = false;
Ext.Ajax.request({
url: 'investaction.jsp?action=isExistSpecCode',
async: false,
params: {"cscode": value},
method: 'POST',
callback: function(options, response){
msg = ["return:", response.responseText];
alert(msg.join(''));
}
});
return exist;
}
},
fieldLabel: '专业代码'},2. 服务器端代码 investaction.jsp
<%
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
String action = request.getParameter("action"); if(action.equals("isExistSpecCode")){
String isExist = "false";
String scode = request.getParameter("cscode");
if(invest.isExistSpeccode(scode)){
isExist = "true";
}
response.getWriter().write(isExist);
%》
解决方案 »
- javascript复制代码问题
- 梅花雪树2.0动态添加节点的问题
- 为什么这样不能document.getElementById("form1").getElementsByName("a");
- 怎样在table中动态追加行,而不是插入?
- 还是预览iframe的问题!
- 有难度的动态框架问题!高手请进来!
- 200分求菜单被遮住问题!!
- parent.window.opener.ifraName.frameElement.style.display="";不可以?
- 鼠标停留一段时间才触发事件?
- 如何通过用网页上的时间更改本地的时间?急需
- 急!extjs做像京东的商品分类
- iframe自适应高度(跨域)的问题
response.getWriter().close();//关闭流
write不如可以试试print()这个函数试试
response.getWriter().flush();
response.getWriter().close();