Question

我想知道如何使用String bean作为键从spring定义的Map中获取值。

我在xml中定义了以下地图：

Sub Tester()
    Dim dontDelete As Variant
    Dim sKeep As String, x As Long
    Dim rngSearch As Range, c As Range
    Dim i As Long, j As Long

    dontDelete = Array("abel", "varo")
    Dim deleteCell As Boolean
         For x = Range("A" & Rows.Count).End(xlUp).Row To 1 Step -1
             Set c = Range("A" & x).Cells
             deleteCell = True
             For j = LBound(dontDelete) To UBound(dontDelete)
                 If InStr(c.Value, dontDelete(j)) Then
                     deleteCell = False
                 End If
             Next j
             If deleteCell Then c.Delete shift:=xlShiftUp
         Next x
End Sub

我有以下简单的String bean：

<bean id="myMap" class="java.util.HashMap">
    <constructor-arg>
        <util:map>
            <entry key="key1" value="Value1"/>
            <entry key="key2" value="Value2"/>
        </util:map>
    </constructor-arg>
</bean>

要在我的xml中使用SPEL获取值，如下所示：

<bean id="mySimpleString" class="java.lang.String">
    <constructor-arg value="key1"/>
</bean>

我的<bean class="com.my.MyClass"> <property name="someProp" value="#{myMap[#mySimpleString]}"/> </bean>值为空。

我做错了什么？

Answer 1

由于myMap是Map，您应该使用#get()方法来检索该值。这会起作用

<property name="someProp" value="#{myMap.get(mySimpleString)}"/>

使用String bean作为SPEL中的键从map获取值

1 个答案: