angular js 页面修改数据存入数据库

一、编写service，修改数据要根据ID回显数据

　　//根据ID查询
    public Brand findById(Long id);
    //修改
    public int update(Brand brand);
二、编写serviceImpl

@Override
public Brand findById(Long id) {
    return brandDao.selectByPrimaryKey(id);
}

@Override
public int update(Brand brand) {
    return brandDao.updateByPrimaryKeySelective(brand);
}
三、编写controller，修改返回Result类型

//根据ID查询回显数据
//    @RequestMapping("/findById")
    @RequestMapping("/{id}")
//    public Brand findById(Long id){
    public Brand findById(@PathVariable(value = "id")Long id){
        return brandService.findById(id);
    }
    //修改
    @RequestMapping("/update")
    public Result update(@RequestBody Brand brand){
        int id = brandService.update(brand);
        if (id>0){
            return new Result(true,"修改成功");
        }else {
            return new Result(false,"修改失败");
        }
    }

四、编写页面html

//添加保存
$scope.save=function () {
   var url="../brand/save.do";
   //判断是添加还是修改，添加$scope.entity.id==null，否则执行修改
   if ($scope.entity.id!=null){
      url="../brand/update.do"
   }
   //发送请求$http.post(url,$scope.entity)，第一个参数是请求地址，第二个参数是提交的数据
   $http.post(url,$scope.entity).success(function (response) {
      if(response.success){
         //重新加载
         return $scope.reloadList();
      }else {
         alert(response.message);
      }
   });
}
//根据ID回显数据
$scope.findById=function (id) {
   // $http.get('../brand/findById.do?id='+id).success(function (response) {
   $http.get('../brand/'+id+'.do').success(function (response) {
      $scope.entity=response;
   });
}

<td class="text-center">
   <button type="button" class="btn bg-olive btn-xs" data-toggle="modal"
         data-target="#editModal" ng-click="findById(entity.id)" >修改</button>
</td>

//ng-click="save()"，根据请求地址判断调用save

<button class="btn btn-success" data-dismiss="modal" aria-hidden="true" ng-click="save()">保存</button>