下面给个错误的列子
/**
* 采购退货信息添加
*/
@PostMapping("/purchasereturngoods/insert")
@ApiOperation("采购退货信息批量添加")
public R insertPurchaseReturnGoods(
@ApiParam("员工Id:必须")@RequestParam (value="employeeId",required=true) int employeeId,
@ApiParam("采购单Id:必须")@RequestParam (value="purchaseOrderId",required=true) int purchaseOrderId,
@RequestBody List<PurchaseReturnGoods> purchasereturngoodsList){
//获取用户ID
Long userId = getUserId();
return busBaseService.insertReturnGoods(userId,purchaseOrderId,purchasereturngoodsList);
}
后台这样接收前端传过来的数组接收不到的,因为前台默认传的是一个对象,但是你用List去接受它就会报Json解析错误。
为了解决这个问题,我们可以把List<PurchaseReturnGoods>封装到一个对象里在接收前端穿的数组对象:
public class PurchasereturngoodsList implements Serializable {
private static final long serialVersionUID = 1L;
private List<PurchaseReturnGoods> prgList;
public List<PurchaseReturnGoods> getPrgList() {
return prgList;
}
public void setPrgList(List<PurchaseReturnGoods> prgList) {
this.prgList = prgList;
}
}
PurchasereturngoodsList 是新封装的对象,对应的后台接收方式就要改变
/**
* 采购退货信息添加
*/
@PostMapping("/purchasereturngoods/insert")
@ApiOperation("采购退货信息批量添加")
public R insertPurchaseReturnGoods(
@ApiParam("员工Id:必须")@RequestParam (value="employeeId",required=true) int employeeId,
@ApiParam("采购单Id:必须")@RequestParam (value="purchaseOrderId",required=true) int purchaseOrderId,
@ApiParam("采购单Id:prgList")@RequestBody PurchasereturngoodsList purchasereturngoodsList){
//获取用户ID
Long userId = getUserId();
return busBaseService.insertReturnGoods(userId,purchaseOrderId,purchasereturngoodsList.getPrgList());
}
可以看到,接收从List<PurchaseReturnGoods>一个数组变成了PurchasereturngoodsList一个对象,purchasereturngoodsList.getPrgList()就能获取到前端传到后台的对象数组了。
注意:前端往后台传对象的时候参数名要和你封装的对象里面的属性名一致,在我这个模板里前端的参数名就是prgList,而不是purchasereturngoodsList。