bean 类的无效属性不可写或无效的 setter 方法 [英] Invalid property of bean class is not writable or an invalid setter method

问题描述

这可能看起来像这个问题的副本.但这是不同的.我试图通过在 spring 中使用方法注入来重构我的遗留代码.

This may looks like a duplicate of this question. But this is different. I was trying to refactor my legacy code by using method injection in spring.

我有一个包含许多静态辅助方法的 bean 类.我的针对性方法如下:

I have a bean class which contains many static helper methods. My targeted method as follows:

上下文.java

private static MessageSender messageSender;

//...

public static MessageSender getMessageSender(){
    return messageSender;
}

上下文豆

<bean id="context" class="org.abc.Context">

   <property name="messageSender"><ref bean="mailMessageSender"/></property>
</bean>

MailMessageSender.java

MailMessageSender.java

public abstract class MailMessageSender{

   protected abstract Session createSession();

   //using createSession() somewhere in this class
}

MailMessageSender bean

MailMessageSender bean

<bean id="session" class="javax.mail.Session" scope="prototype" />

<bean id="mailMessageSender" class="org.abc.MailMessageSender">
   <lookup-method name="createSession" bean="session"/>
</bean>

我在安装项目时收到无效属性错误.

I'm getting invalid property error when I'm installing the project.

推荐答案

你不能注入静态字段，把你的Context.java中的变量改成这样:

You can't inject static field, change your variable in Context.java become like this:

private MessageSender messageSender;

//...

public MessageSender getMessageSender(){
    return messageSender;
}

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