Spring MVC中没有默认构造函数发现

Question

我有一个问题，这个程序

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cdmiService': Cannot resolve reference to bean 'badRequestException' while setting bean property 'providers' with key [0]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'badRequestException' defined in class path resource [applicationContext.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.snia.cdmiserver.exception.BadRequestException]: No default constructor found; nested exception is java.lang.NoSuchMethodException: org.snia.cdmiserver.exception.BadRequestException.<init>() 

和我的XML如下：

<bean id="badRequestException"  class="org.snia.cdmiserver.exception.BadRequestException"/> 

的BadRequestException.java如下：

public class BadRequestException extends RuntimeException { 
public BadRequestException(String message) { 
    super(message); 
} 

public BadRequestException(String message, Throwable cause) { 
    super(message, cause); 
} 

public BadRequestException(Throwable cause) { 
    super(cause); 
} 

我该如何解决这个问题？添加一个默认的建筑师或编辑XML文件？

Answer 1

我该如何解决这个问题？添加一个默认的构造函数或编辑xml文件？

你可以解决它。

1. 添加默认construtor：

   public BadRequestException() { 
        super(); 
       } 
   

2. 编辑XML文件

   <bean id="badRequestException"  class="org.snia.cdmiserver.exception.BadRequestException"> 
       <constructor-arg type="java.lang.String"><value>Message you want</value></constructor-arg> 
   </bean >