java - 编辑列表中一个元素的 API 端点

Question

我目前正在构建一个rest api，让用户输入菜谱并对其进行描述。我使用 spring-boot 作为后端，使用 angularjs 作为前端。

这是 springboot 配方文件

package com.example.springboot;
import com.example.springboot.Recipe;
import javax.persistence.*;
import javax.validation.constraints.NotBlank;
import  javax.validation.constraints.NotNull;

@Entity // This tells Hibernate to make a table out of this class

public class Recipe {

    public Recipe(){

    }

    public Recipe(Integer id, String name, String description, String type, Integer preptime, Integer cooktime, String content, Integer difficulty){
        this.id = id;
        this.name = name;
        this.description = description;
        this.type = type;
        this.preptime = preptimee;
        this.cooktime = cooktime;
        this.content = content;
        this.difficulty = difficulty;
    }

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;


    private String name;


    private String description;


    private String type;


    private Integer preptime;




    @Column(columnDefinition = "TEXT")
    private String content;

    private Integer difficulty;






    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public Integer getDifficulty() {
        return difficulty;
    }

    public void setDifficulty(Integer difficulty) {
        this.difficulty = difficulty;
    }



    public Integer getpreptime {
        return preptime;
    }

    public void setpreptime(Integer preptime) {
        this.preptime = preptime;
    }
}

我创建了一个端点，用户可以在其中编辑整个配方。用户可以在recipes/edit/{id}端点中编辑名称、描述、内容等。端点看起来像这样。

@PutMapping("/recipes/edit/{id}")
    void updateRecipe(@PathVariable int id, @RequestBody Recipe recipe ) {
        System.out.println("entering");
        Recipe recipe_ = recipeRepository.findById(id).get();
        recipe_.setName(recipe.getName());
        recipe_.setDescription(recipe.getDescription());
        recipe_.setType(recipe.getType());
        recipe_.setpreptime(recipe.getpreptime());
        recipe_.setContent(recipe.getContent());


        System.out.println("entering " + recipe.getTitle());
        System.out.println("entering" + recipe.getType());
        System.out.println("entering" + recipe.getDescription());


        System.out.println("adding");
        recipeRepository.save(recipe_);
    }

现在我只想创建一个端点，它仅用于重命名配方名称。此 putmapping 应接受列表作为其输入，然后仅重命名配方的名称。

   @PutMapping("/recipes/rename")
      public List<Recipe> {
       System.out.println("entering renaming");
     //  recipe_.setName(recipe.getName()); ?


}

我不知道如何实现这个。这是我到目前为止所想出的。以列表作为参数的端点。

这是在编辑功能中更新Recipes的service.ts文件服务.ts:

updateRecipe (id: number, recipe: any): Observable<any > {
    const url = `${this.usersUrl}/edit/${id}`;
  return this.http.put(url ,recipe);
}

调用 updateRecipe 的位置:

 save(): void {
    const id = +this.route.snapshot.paramMap.get('name');
     this.recipeService.updateRecipe2(id, this.recipes)
       .subscribe(() => this.gotoUserList());

   }

这个实现工作，我不知道如何让它工作，也不知道如何重写函数，以便它只能更新配方的名称而不是整个文件。

有人可以帮助我吗？

Answer 1

您的更新名称方法应如下所示:

@PutMapping("...{id}")
public void updateName(@PathVariable Integer id, @RequestParam String name){
    Recipe recipe = repository.findById(id).orElseThrow(...);
    recipe.setName(name);
}

如果你想重命名食谱列表

public void renameRecipes(String oldName, String newName){
    repository.findByName(oldName)
              .forEach(r -> r.setName(newName));
}

@PutMapping("recipes/rename")
public void updateNames(@PequestParam String oldName, @RequestParam String newName){
    renameRecipes(oldName, newName);
}

尝试一下。