春天在地图结合值 [英] Spring binding values in a Map

问题描述

有没有办法在地图中spring绑定值？

Is there a way to Spring bind values in a map?

比如说，我有一个地图＆LT;字符串，字符串＆GT; ，我想它去春来绑定特定的值。
用户将键入的东西到一个input元素，并输入元素的值将得到势必在地图上的特定键关联的值。

For instance, I have a Map<String,String> and I want to spring bind specific values in it. The user will type something into a input element, and the value of that input element will get bound to the value associated with a specific key in the map.

推荐答案

是的，你可以用 [...] 语法做到这一点。在地图本身，但是，应该是命令对象的属性：

Yes, you can do it with [...] syntax. The Map itself, however, should be a property of the command object:

public class Form {
    private Map<String, String> values = ...;
    ...
}

然后你提交一个表单与名为值['富'] ，即使用Spring表单标签这将是一个路径输入字段：

Then you submit a form with the input field named values['foo'], i.e. with Spring form tags it would be a path:

<form:input path = "values['foo']" />

或名称在纯HTML：

<input name = "values['foo']" type = "text" />

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