用Thymeleaf+Spring boot与Java一起从网页中检索布尔值

Question

public class SuperHuman {
    private int id;
    
    @NotBlank(message = "Name must not be empty")
    @Size(max = 25, message = "Name must be less than 25 characters")
    private String name;
    
    @NotBlank(message = "Description must not be empty")
    @Size(max = 100, message = "Name must be less than 100 characters")
    private String description;
    
    // The hero boolean will have a default value
    private boolean hero;

    private List<Power> powers;

上面是我的超级人类模型。请注意名为Hero的布尔变量。

    @PostMapping("addSuperHuman")
    public String addSuper(HttpServletRequest request){
        String[] powerIds = request.getParameterValues("powers");
        String name = request.getParameter("name");
        String description = request.getParameter("description");
        
        // Request for boolean retrieval code here
        
        List<Power> powers = new ArrayList<>();
        for(String powerId : powerIds){
            powers.add(powerDao.getPowerById(Integer.parseInt(powerId)));
        }
        SuperHuman superHuman = new SuperHuman();
        superHuman.setName(name);
        superHuman.setDescription(description);
        // superHuman.setHero();
        superHuman.setPowers(powers);
        
        superDao.addSuperHuman(superHuman);
        
        return "redirect:/superHumans";
    }

上面是我用来通过servlet请求检索表单数据的控制器方法。一旦发现，注释部分将被替换为实际工作代码。

```
                    <div class="form-group row pb-3">
                    <label for="affiliation" class="col-3 col-form-label">
                        <Strong>Affiliation:</Strong></label>
                    <div class="col-2">
                            <select id="heroOrVillian" name="heroOrVillian" class="form-control">
                                <option value="1">Hero</option>
                                <option value="2">Villian</option>
                            </select>
                    </div>
                </div>
```

                       <div class="col-2">
                                <select id="heroOrVillian" name="heroOrVillian" class="form-control">
                                    <option value="1">Hero</option>
                                    <option value="2">Villian</option>
                                </select>
                        </div>

我只想知道是否有一种方法通过输入字段返回布尔值true或false，用户可以选择他们是英雄还是维利安，并在java中接收所述数据，我可以将其提交到SQL数据库中。

Answer 1

您必须更改代码，如下所示

 <select id="heroOrVillian" name="heroOrVillian" class="form-control">
                            <option value="0">Hero</option>
                            <option value="1">Villian</option>
                        </select>