Question

我是Spring Boot的新手，我正在努力创建一个应用程序的正面连接到后面。

我使用过这个网站https://spring.io/guides/gs/validating-form-input/ 研究一个简单的例子，它工作得很好。它使用名称＆＃39;名称＆＃39;和＆＃39;年龄＆＃39;对于两个字段，getAge和getName等用于getter和setter。

此代码有效：

HTML表单：

<html>
    <body>
        <form action="#" th:action="@{/}" th:object="${personForm}" method="post">
            <table>
                <tr>
                    <td>Name:</td>
                    <td><input type="text" th:field="*{name}" /></td>
                    <td th:if="${#fields.hasErrors('name')}" th:errors="*{name}">Name Error</td>
                </tr>
                <tr>
                    <td>Age:</td>
                    <td><input type="text" th:field="*{age}" /></td>
                    <td th:if="${#fields.hasErrors('age')}" th:errors="*{age}">Age Error</td>
                </tr>
                <tr>
                    <td><button type="submit">Submit</button></td>
                </tr>
            </table>
        </form>
    </body>
</html>

Person java class

public class PersonForm {

    @NotNull
    @Size(min=2, max=30)
    private String name;

    @NotNull
    @Min(18)
    private Integer age;

    public String getName() {
        return this.name;
    }

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

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String toString() {
        return "Person(Name: " + this.name + ", Age: " + this.age + ")";
    }
}

控制器

@Controller
public class WebController extends WebMvcConfigurerAdapter {

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/results").setViewName("results");
    }

    @GetMapping("/")
    public String showForm(PersonForm personForm) {
        return "form";
    }

    @PostMapping("/")
    public String checkPersonInfo(@Valid PersonForm personForm, BindingResult bindingResult) {

        if (bindingResult.hasErrors()) {
            return "form";
        }

        return "redirect:/results";
    }
}

我只是将变量的名称更改为以下内容：（2个字符串而不是int和字符串）。当我尝试查看页面时显示以下错误：执行处理器期间出错＆org.thymeleaf.spring4.processor.attr.SpringInputGeneralFieldAttrProcessor＆＃39; （形式：33）

第33行有＆＃34;个：字段=＆＃34; * {testcolumn}＆＃34; ＆＃34;在上面。

是否有某些命名惯例，您可能必须遵循百里香？我找不到有关它的信息。感谢

人员类：

 @NotNull
    @Size(min=2, max=30)
    private String testcolumn;

    @NotNull
    private String testcolumntwo;

    public String getTestcolumn() {
        return this.testcolumn;
    }

    public void setTestcolumn(String testcolumn) {
        this.testcolumn =   testcolumn;


    }

    public String getTestcolumntwo() {
        return testcolumntwo;
    }

    public void setTestcolumntwo(String testcolumntwo) {
        this.testcolumntwo = testcolumntwo;
    }

    public String toString() {
        return "Person(Name: " + this.testcolumntwo + ", Age: " + this.testcolumntwo + ")";
    }

HTML表单：

<form action="#" th:action="@{/}" th:object="${personForm}" method="post">
    <table>
        <tr>
            <td>Name:</td>
            <td><input type="text" th:field="*{testcolumn}" /></td>
            <td th:if="${#fields.hasErrors('testcolumn')}" th:errors="*{testcolumn}">Name Error</td>
        </tr>
        <tr>
            <td>Age:</td>
            <td><input type="text" th:field="*{testcolumntwo}" /></td>
            <td th:if="${#fields.hasErrors('testcolumntwo')}" th:errors="*{testcolumntwo}">Age Error</td>
        </tr>
        <tr>
            <td><button type="submit">Submit</button></td>
        </tr>
    </table>
</form>

命名变量/字段??不接受名字 - Thymeleaf和Spring Boot MVC

0 个答案: