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SpringMVC PUT request to edit data but instead, got a new one(SpringMVC发出了编辑数据的请求，但得到了一个新的请求)

转载 作者：bug小助手 更新时间：2023-10-28 10:56:45 26 4
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I'm practicing Spring/Thymeleaf and facing an issue
I create a a PUT request to edit but instead it act as POST by create a new data

我正在练习Spring/Thymeleaf，面对一个问题，我创建了一个要编辑的PUT请求，但它通过创建一个新数据来充当POST


Here are my codes
Controller

以下是我的代码控制器


// imports



    @Autowired
    private UniversityService universityService;

    // More codes


    @PutMapping("/universities/{id}/edit")
    public String editUniversity(
            @Valid @ModelAttribute("thisUniversity") University updatedUniversity,
            BindingResult result,
            @PathVariable Long id) {
        if(result.hasErrors()) {
            return "editUniversity";
        }
        universityService.updateUniversity(updatedUniversity);
        return "redirect:/";
    }


Service

服务


// imports

@Service
public class UniversityService {

    @Autowired
    private UniversityRepo universityRepo;

//    Add a university
    public University createUniversity (University newUniversity) {
        return universityRepo.save(newUniversity);
    }


// More codes


    public University updateUniversity(University updatedUniversity) {
        return universityRepo.save(updatedUniversity);
    }

}

HTML

超文本标记语言


<!DOCTYPE html>
<1-- head -->
  <form th:taction="@{'/universities/'+${thisUniversity.universityId}+'/edit'}" th:object="${thisUniversity}" th:method="POST">
      <!--  The below tag is required for PUT/DELETE request  -->
     <input type="hidden" name="_method" value="PUT">

    // HTML elements

    <input type="submit" value="Save University">
  </form>

I also have spring.mvc.hiddenmethod.filter.enabled=true in application.properties file

我在应用程序的属性文件中也有spring.mvc.iddenmethod.filter.Enabled=True


I have try th:method="PUT" in form tag or not including <input type="hidden" name="_method" value="PUT">
But the results are still the same

我在表单标签中尝试了th：method=“PUT”或不包含，但结果仍然相同


更多回答

Stop using entities in your api. Learn about 3tier architecture

停止在API中使用实体。了解3TIER架构

Has your updatedUniversity entity a proper id set?

您的更新版大学实体是否设置了正确的ID？

优秀答案推荐

You're taking the id as a path variable but not giving it to the updated object, which is why it gets saved to a new object instead of editing the existing one.

您将id作为路径变量，但没有将其提供给更新后的对象，这就是将其保存到新对象而不是编辑现有对象的原因。


更多回答

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