在InjectionServiceImpl类里面构造注入和设值注入同时存在，把spring-injection.xml文件中的构造注入配置注释掉，运行TestInjection类里面的testSetter（）设值注入方法，报异常

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>()