【发布时间】：2021-06-24 12:15:48
【问题描述】：
我有一个问题：我的 post 表单工作正常，与 post 方法相关的控制器确实从 HTML post 表单接收对象，但 @Valid 注释什么也不做。
在BindingResult 对象中没有错误，即使它应该在那里
问题出在：itemAddControllerPost()
package orchowski.tomasz.ecommercedemo.controller.item;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import orchowski.tomasz.ecommercedemo.command.ItemCommand;
import orchowski.tomasz.ecommercedemo.converter.ItemCommandToItem;
import orchowski.tomasz.ecommercedemo.converter.ItemToItemCommand;
import orchowski.tomasz.ecommercedemo.domain.Item;
import orchowski.tomasz.ecommercedemo.security.permision.PermissionStoreItemCreate;
import orchowski.tomasz.ecommercedemo.security.permision.PermissionStoreItemRead;
import orchowski.tomasz.ecommercedemo.services.ItemService;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import jakarta.validation.Valid;
import org.springframework.web.bind.annotation.*;
import javax.servlet.http.HttpServletRequest;
import org.springframework.web.bind.annotation.*;
import java.security.Principal;
import java.util.List;
import java.util.Optional;
@Slf4j
@Controller
@RequestMapping("/item")
@RequiredArgsConstructor
public class ItemController {
private final ItemService itemService;
private final ItemCommandToItem commandToItem;
private final ItemToItemCommand itemToCommand;
@PermissionStoreItemCreate
@GetMapping("/create")
public String itemAddController(Model model) {
model.addAttribute("item", new ItemCommand());
return "item/itemform";
}
@PermissionStoreItemCreate
@PostMapping("/create/new")
public String itemAddControllerPost(@ModelAttribute("item") @Valid ItemCommand itemCommand, BindingResult bindingResult) {
log.debug("Posting new item object");
if (bindingResult.hasErrors()) {
bindingResult.getAllErrors().forEach(objectError -> log.error(objectError.toString()));
log.debug("Binding error");
return "redirect:/item/create";
}
Item save = itemService.save(commandToItem.convert(itemCommand));
log.debug("New item object persisted to db \n " + save.toString());
return "redirect:/item/" + save.getId() + "/show";
}
@PermissionStoreItemRead
@GetMapping("/show")
public String itemRead(Model model, HttpServletRequest request, @RequestParam(defaultValue = "0") Integer pageNo,
@RequestParam(defaultValue = "10") Integer pageSize) {
///item/show?pageNo=2&pageSize=20
if (pageNo < 0 || pageSize <= 0) {
return "redirect:/item/show?pageNo=0";
}
model.addAttribute("pageNumber", pageNo);
model.addAttribute("pageSize", pageSize);
List<Item> itemList = itemService.findAll(pageNo, pageSize);
if (itemList.size() == 0) {
return "redirect:/item/show?pageNo=" + (pageNo - 1);
}
model.addAttribute("items", itemList);
System.out.println(itemList);
return "item/show";
}
@GetMapping("/{id}/show")
@PermissionStoreItemRead
public String showItem(Model model,@PathVariable Long id) {
Optional<Item> byId = itemService.findById(id);
model.addAttribute("item", byId.orElseThrow(() -> new RuntimeException("Item id " + id + " not found")));
return "item/showProduct";
}
}
我的命令对象
package orchowski.tomasz.ecommercedemo.command;
import lombok.*;
import javax.validation.constraints.*;
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class ItemCommand {
private Long id;
@Size(min = 20, max = 1000,message = "Description must contains at least 20 characters and less than 1000")
@NotBlank
private String description;
@Min(value = 0, message = "Price have to be greater than 0")
@NotNull
private Double price;
@Min(value = 0, message = "Stock have to be at least 0")
@NotNull
private Integer stock;
}
html表单
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org"
xmlns:sec="http://www.thymeleaf.org/extras/spring-security">
<head>
<meta charset="UTF-8">
<title>store</title>
<link th:rel="stylesheet" th:href="@{/webjars/bootstrap/5.0.1/css/bootstrap.min.css}">
<link th:rel="stylesheet" th:href="@{/css/default.css}">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-sm-12">
<nav th:replace="fragments/navbar :: nav"></nav>
</div>
</div>
<form th:object="${item}" th:action="@{/item/create/new}" method="post">
<div class="row">
<div class="mb-3">
<!--description -->
<label for="description" class="form-label">Description of product</label>
<textarea class="form-control" id="description" name="description"></textarea>
</div>
</div>
<div class="row">
<div class="col-sm-3">
<!--price -->
<label for="price">Price of product</label>
<input type="text" class="form-control" id="price" name="price">
</div>
<div class="col-sm-3">
<!--stock -->
<label for="stock">Stock item</label>
<input type="text" class="form-control" id="stock" name="stock">
</div>
</div>
<div class="row">
<button type="submit" class="btn btn-primary">Submit</button>
</div>
</form>
</div>
<script th:src="@{/webjars/jquery/3.0.0/jquery.min.js}"></script>
<script th:src="@{/webjars/popper.js/2.9.2/umd/popper.js}"></script>
<script th:src="@{/webjars/bootstrap/5.0.1/js/bootstrap.js}"></script>
</body>
</html>
查看GitHub上的代码please click here
【问题讨论】：
-
尝试在
ItemController添加@Validated
标签： java spring validation