SpEL function changes String

I am trying to take a String from properties, run an operation on it, then store it as a variable with the @Value annotation. Unfortunately, when I use the #{'${variable}'} syntax that I need to use to use SpEL, the String changes. If I have two double quotes (""), they are changed to a single double quote (") which prevents me from deserializing the String. How do I prevent Spring from removing that 2nd quotation mark?

myProperties.properties
myValue={"myWorkingKey": "Hi!", "myNonWorkingKey": ""}


MyClass.java
public class MyClass {

  @Value("#{'${myValue}'}")
  public void printWithSpEL(String withSpEL){
    System.out.println(withSpEL);
  }

  @Value("${myValue}")
  public void printWithOut(String without){
    System.out.println(without);
  }
}

result after startup:

{"myWorkingKey": "Hi!", "myNonWorkingKey": "}
{"myWorkingKey": "Hi!", "myNonWorkingKey": ""}


</details>


# 答案1
**得分**: 1

为什么需要在这样一个简单的值上使用 SpEL？属性占位符已经足够了。

或者这只是一个基于更复杂内容的示例。

使用 SpEL 需要三重引号：

    myValue={&quot;myWorkingKey&quot;: &quot;Hi!&quot;, &quot;myNonWorkingKey&quot;: &quot;&quot;&quot;}

<details>
<summary>英文:</summary>

Why do you need to use SpEL for such a simple value? The property placeholder is enough.

Or is this just an example based on something more complex.

With SpEL you need triple quotes:

    myValue={&quot;myWorkingKey&quot;: &quot;Hi!&quot;, &quot;myNonWorkingKey&quot;: &quot;&quot;&quot;}


</details>



# 答案2
**得分**: 0

为什么要加载到 `String` 中？改为加载到 `Map&lt;String, String&gt;` 中。

```java
@Value(&quot;#{${myValue}}&quot;)
public void printWithSpEL(Map&lt;String, String&gt; withSpEL){
    System.out.println(withSpEL);
}

@Value("#{${myValue}}")
public void printWithSpEL(Map<String, String> withSpEL){
    System.out.println(withSpEL);
}