在InjectionServiceImpl類里面構造注入和設值注入同時存在，把spring-injection.xml文件中的構造注入配置注釋掉，運行TestInjection類里面的testSetter（）設值注入方法，報異常

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'injectionService' defined in class path resource [spring-injection.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.imooc.ioc.injection.service.InjectionServiceImpl]: No default constructor found; nested exception is java.lang.NoSuchMethodException: com.imooc.ioc.injection.service.InjectionServiceImpl.<init>()