线程“主”中的异常org.springframework.beans.factory.BeanCreationException:创建类路径资源[Beans.xml]中定义的名称为“ helloGeorgia”的bean时出错:设置属性值时出错;嵌套的异常是org.springframework.beans.NotWritablePropertyException:Bean类[com.tutorialspoint.HelloGeorgia]的无效属性“ werili”:Bean属性“ werili”不可写,或者具有无效的setter方法。 setter的参数类型是否与getter的返回类型匹配?
但是我不明白为什么。
这是bean.xml文件:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns = "http://www.springframework.org/schema/beans"
xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation = "http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="helloworld" class="com.tutorialspoint.HelloWorld">
<property name="message" value = "Hello World" />
<property name="werili" value = "Hello Hello" />
</bean>
<bean id="helloGeorgia" class="com.tutorialspoint.HelloGeorgia"
parent="helloworld">
<property name="message" value="Hello Georgia" />
</bean>
</beans>
,这是三个Java文件: MainApp.java
package com.tutorialspoint;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class MainApp {
public static void main(String[] args){
ApplicationContext context = new ClassPathXmlApplicationContext("Beans.xml");
HelloWorld f = (HelloWorld) context.getBean("helloworld");
System.out.println(f.getMessage());
HelloGeorgia georgia = (HelloGeorgia) context.getBean("helloGeorgia");
System.out.println(georgia.getMessage());
}
}
HelloWorld.java
package com.tutorialspoint;
public class HelloWorld {
private String message;
private String werili;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public String getWerili() {
return werili;
}
public void setWerili(String werili) {
this.werili = werili;
}
}
HelloGeorgia.java
package com.tutorialspoint;
public class HelloGeorgia {
private String message;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
}
请告诉我如何解决它。谢谢
答案 0 :(得分:2)
查看您的春季配置helloGeorgia应该是helloWorld bean的子代。与java类中的情况不同。您也应该在Java中继承,或者至少要继承。您应该在helloGeorgia中使用getter / setter声明相同的字段。