Bean属性不可读或具有无效的getter方法 [英] Bean property is not readable or has an invalid getter method

问题描述

所以，我有一个任务是为注册表路由编写一个简单的Web应用程序。使用Spring MVC。所以我有班级路线，我想保持起点，终点和中间点列表。但我不明白，如何将值从jsp列入列表（例如使用jstl）。所以我决定解析一个字符串。

So, I have a task to write a simple web-application for registry routes. Using Spring MVC. So I have class "Route", where I want to keep start point, finish point and list of intermediate points. But I don't understand, how to put values to list from jsp (e.g. using jstl). So I decide to parse a string.

public class Route {
    private String start;
    private String finish;
    private String form;
    private List<String> list;

    public Route() {
    }

    public Route(String start, String finish, String route) {
        this.start = start;
        this.finish = finish;
        this.form = route;
        this.toList();
    }

    public Route(String start, String finish) {
        this.start = start;
        this.finish = finish;
        this.list = new ArrayList<>();
    }

    public void addTown(String town){
        list.add(town);
    }

    public String getStart() {
        return start;
    }

    public void setStart(String start) {
        this.start = start;
    }

    public String getFinish() {
        return finish;
    }

    public void setFinish(String finish) {
        this.finish = finish;
    }

    public List<String> getRoute() {
        return list;
    }

    public void setFormRoute(String route) {
        this.form = route; 
        this.toList();
    }    

    private void toList()
    {
        String[] temp = form.split(",");
        for(String temp1 : temp) {
            list.add(temp1);
        }
    }
}

并遵循JSP：

<h2><a href="find.htm">Найти существующий маршрут</a><br/><br/>
    Добавить маршрут</h2>
<h3> 
    <spring:nestedPath path="route">
        <form modelAttribute="routeAttribute" method="POST" action="${add}">
            Пункт отправления:
            <spring:bind path="start">
                <input type="text" name="${status.expression}" value="${status.value}">
            </spring:bind><br/><br/>                    
            Пункт прибытия:
            <spring:bind path="finish">
                <input type="text" name="${status.expression}" value="${status.value}">
            </spring:bind><br/><br/>
            Промежуточные пункты (через запятую):
            <spring:bind path="form">
                <input type="text" name="${status.expression}" value="${status.value}">
            </spring:bind><br/><br/>

            <input type="submit" value="Сохранить">
        </form>
    </spring:nestedPath>

如果它是必需的，我可以发布控制器代码。
我有一个错误：

If it's nessesary I can post Controller code. And I have an error:

Bean property 'form' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?

请有人解释一下我做错的原因吗？

Can anyone, please, to explain what I do principaly wrong?

推荐答案

将表单的getter方法添加到bean中，如错误消息所示

Add the form's getter method to the bean as indicated by the error message

public String getForm() {
   return form;
}

setForm 应该有相应的方法

public void setForm(String form) {
   this.form = form;
}

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