java Map 中的 Spring 绑定值
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/4511647/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Spring binding values in a Map
提问by stevebot
Is there a way to Spring bind values in a map?
有没有办法在地图中绑定值？
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.
例如，我有一个Map<String,String>，我想在其中绑定特定的值。用户将在 input 元素中键入一些内容，该 input 元素的值将绑定到与映射中特定键关联的值。
回答by axtavt
Yes, you can do it with [...]syntax. The Mapitself, however, should be a property of the command object:
是的，您可以使用[...]语法来做到这一点。的Map本身，但是，应该是命令对象的属性：
public class Form {
private Map<String, String> values = ...;
...
}
Then you submit a form with the input field named values['foo'], i.e. with Spring form tags it would be a path:
然后您提交一个输入字段名为 的values['foo']表单，即使用 Spring 表单标签，它将是一个path：
<form:input path = "values['foo']" />
or namein plain HTML:
或name在纯 HTML 中：
<input name = "values['foo']" type = "text" />
