ext combobox动态加载数据库数据(附前后台)

前台：

var provinceStore = new Ext.data.Store({ 
proxy: new Ext.data.HttpProxy({ url: basePath + "/stationManage/station_getProvinceJSON.action" }), 
reader: new Ext.data.JsonReader( 
{ root: "" }, 
["PROVINCEID", "PROVINCENAME"] 
) 
}); 
//选择省市 
var provinceIDadd = new Ext.form.ComboBox({ 
anchor : '98%', 
id:'provinceIDadd', 
name : "provinceIDAdd1", 
hiddenName : "provinceID", 
displayField : "PROVINCENAME", 
valueField : "PROVINCEID", 
blankText : '请选择站点所属省份', 
emptyText : '请选择站点所属省份', 
fieldLabel : '站点所属省份', 
allowBlank : false, 
editable : false, 
triggerAction : 'all', 
store :provinceStore , 
forceSelection : true, 
mode : 'local', 
selectOnFocus : true 
}) 
provinceStore.load();

后台action代码

public class StationAction extends BaseAction { private List<Map<String, Object>> provinceList; 
public void setProvinceList(List<Map<String, Object>> provinceList) { 
this.provinceList = provinceList; 
} 
public List<Map<String, Object>> getProvinceList() { 
return provinceList; 
} 
public String getProvinceJSON(){ 
String sql="SELECT PK_ID PROVINCEID,NAME PROVINCENAME FROM T_DICT_DISTRICT A WHERE A.DISTRICT_LEVEL=20"; 
provinceList= stationService.findBySQL(sql); 
return "json_getProvinceList"; 
} 
}

strtus xml配置

<result name="json_getProvinceList" type="json" > 
<param name="root">provinceList</param> 
</result>

加载静态数据的下拉选择框

var dataType=[['0','8列'],['1','38列'],['2','21列']]; 
var dataTypeStore = new Ext.data.SimpleStore({ 
fields: ['dataTypeID', 'dataTypeName'], 
data : data 
}); var dataTypedd = new Ext.form.ComboBox({ 
anchor : '98%', 
id:'dataTypeadd', 
name : "dataTypeAdd1", 
hiddenName : "dataType", 
displayField : "dataTypeName", 
valueField : "dataTypeID", 
blankText : '请选择数据格式', 
emptyText : '请选择数据格式', 
fieldLabel : '数据格式', 
allowBlank : false, 
editable : false, 
triggerAction : 'all', 
store :unitStore , 
forceSelection : true, 
mode : 'local', 
selectOnFocus : true 
})