是否表达式国际化code使用null_expression和and_expression

src/main/webapp/WEB-INF/views/cfg/stringCfgForm.jsp

@@ -49,12 +49,12 @@ $(function(){
 				<label class="radio-inline"> <input type="radio"
 					name="${cfgName}.exprType" value="1"
 					class="required" <c:if test="${strCfg.exprType==1}">checked</c:if>>
-					<spring:message code="and" />
+					<spring:message code="and_expression" />
 				</label> <label class="radio-inline"> <input type="radio"
 					name="${cfgName}.exprType" value="0"
 					class="required"
 					<c:if test="${strCfg.exprType==0 || strCfg.exprType==null}">checked</c:if>>
-					<spring:message code="null" />
+					<spring:message code="null_expression" />
 				</label>
 			</div>
 			<div for="${cfgName}.exprType"></div>