AngularJswatch监听inputvalue并请求数据的方法

<p class="form-pider"></p>
<p class="form-item form-remark">
 <p class="item-title"><span class="adError">*</span> 投放产品</p>
 <input name="app" ng-model="chance.appName" type="text" class="item-select" placeholder="请填写产品名称">
</p>
<p ng-if="ishaveName==true" class="margin-top-1 adError">
 该应用已被商务"{{haveName}}"录入国，可保持沟通
</p>

$scope.chance={
 appName:null};

$scope.chance={
 appName:null};$scope.ishaveName= false;

$scope.$watch('chance.appName',function () {
 $scope.ishaveName= false; if($scope.chance.appName!=null&&$scope.chance.appName!=undefined&&$scope.chance.appName!=''){ $http.get(ctx+'/chance/findAdminByAppName?appName='+$scope.chance.appName)
 .success(function (data,status) {
 if(data.result!=null){ $scope.haveName= data.result.name; $scope.ishaveName= true;

 }
 })
 }

});

@Controller@RequestMapping("chance")@ResourceFolder(folder = "module/chance/")public class ChanceController {


 @GetMapping("findAdminByAppName") @ResponseBody
 public ResponseBean findAdminByAppName(String appName){ try { return ResponseBean.buildSuccess(customerChanceService.findAdminByAppName(appName));
 }catch (AppException e){ return ResponseBean.buildFailure(e.getMessage());
 }
 }
}

//根据产品名字 ，查看是否有商务经理已经添加了该产品,选则一个不是自己的产品经理@Overridepublic SysAdminUser findAdminByAppName(String appName) { if("".equals(appName)||appName==null){ return null;
 }
 Long adminId = CasConfig.RemoteUserUtil.getRemoteUserId();

 List<SysAdminUser> sysAdminUsers = customerMapper.findAdminByAppName(appName); //有可能会出现多个人，那么首先如果是自己创建的话，就排除掉
 if(sysAdminUsers.size()>0){ if(adminId.compareTo(sysAdminUsers.get(0).getId())==0){
 sysAdminUsers.remove(0);
 } if(sysAdminUsers.size()>0){ return sysAdminUsers.get(0);
 }
 } return null;
}

<!--根据产品，名字，看出是否已经有商务经理在维护了，根据产品名字 ，查看是否有商务经理已经添加了该产品,如果前台传入的参数我空，则通过java判断，不能进入本sql，`否则会出错`-->
 <select id="findAdminByAppName" resultType="com.duodian.admore.entity.db.admin.SysAdminUser"> SELECT s.* FROM `sys_admin_user` s
 left JOIN crm_customer_chance c on c.adminId = s.id where c.isVisible = 1 and c.adminId is not NULL
 <if test="_parameter != null and _parameter!= ''"> and c.appName = #{_parameter}
 </if> GROUP by id
 </select>

</mapper>