Spring（4）从json文件里面读取BeanDefinition

Spring 从xml文件读取BeanDefinition，或者从properties文件读取BeanDefinition，大家或多或少都有了解，今儿就是对spring进行一个扩展来从json里面去读取BeanDefinition。

下面是我用fastjson转的GenericBeanDefinition的json文件，当然你去转的话可能会报错哦，开动你的脑筋，很好解决的

{"abstract":false,
"autowireCandidate":true,
"autowireMode":0,
"beanClassName":"org.spring.learn.service.impl.TestServiceImpl",
"constructorArgumentValues":{
"argumentCount":0,
"empty":true,
"genericArgumentValues":[],
"indexedArgumentValues":{}},
"dependencyCheck":0,
"enforceDestroyMethod":true,
"enforceInitMethod":true,
"lenientConstructorResolution":true,
"methodOverrides":{"empty":true,"overrides":[]},
"nonPublicAccessAllowed":true,
"primary":false,
"propertyValues":{"converted":false,"empty":true,"propertyValueList":[],"propertyValues":[]}
,"prototype":false,
"qualifiers":[],
"resolvableType":{"array":false,"componentType":{"$ref":"@"},
"generics":[],
"interfaces":[],
"source":{"typeName":"org.springframework.core.ResolvableType$EmptyType@5442a311"},
"superType":{"$ref":"@"},
"type":{"$ref":"$.resolvableType.source"}},
"resolvedAutowireMode":0,
"role":0,
"scope":"",
"singleton":true,
"synthetic":false
}
{"abstract":false,
"autowireCandidate":true,
"autowireMode":0,
"beanClassName":"org.spring.learn.controller.TestControllerWithProperty",
"constructorArgumentValues":{"argumentCount":0,"empty":true,"genericArgumentValues":[],"indexedArgumentValues":{}},
"dependencyCheck":0,
"enforceDestroyMethod":true,
"enforceInitMethod":true,
"lenientConstructorResolution":true,
"methodOverrides":{"empty":true,"overrides":[]},
"nonPublicAccessAllowed":true,
"primary":false,
"propertyValues":{
"converted":false,
"empty":false,
"propertyValueList":[
{"converted":false,"name":"name","optional":false,"originalPropertyValue":{"$ref":"@"},"value":"property controller"},
{"converted":false,"name":"testService","optional":false,"originalPropertyValue":{"$ref":"@"},"value":{"beanName":"testServiceImpl","toParent":false}},
{"converted":false,"name":"key","optional":false,"originalPropertyValue":{"$ref":"@"},"value":"property"}],
"propertyValues":[{"$ref":"$.propertyValues.propertyValueList[0]"},{"$ref":"$.propertyValues.propertyValueList[1]"},{"$ref":"$.propertyValues.propertyValueList[2]"}]},
"prototype":false,
"qualifiers":[],
"resolvableType":{"array":false,"componentType":{"array":false,"componentType":{"$ref":"@"},"generics":[],"interfaces":[],"source":{"typeName":"org.springframework.core.ResolvableType$EmptyType@5442a311"},"superType":{"$ref":"@"},"type":{"$ref":"$.resolvableType.componentType.source"}},
"generics":[],
"interfaces":[],
"rawClass":"org.spring.learn.controller.TestControllerWithProperty",
"source":"org.spring.learn.controller.TestControllerWithProperty",
"superType":{"array":false,"componentType":{"$ref":"$.resolvableType.componentType"},
"generics":[],
"interfaces":[],
"rawClass":"java.lang.Object",
"source":"java.lang.Object",
"superType":{"$ref":"$.resolvableType.componentType"},
"type":"java.lang.Object"},
"type":"org.spring.learn.controller.TestControllerWithProperty"},
"resolvedAutowireMode":0,
"role":0,
"scope":"",
"singleton":true,
"synthetic":false
}
{"abstract":false,"autowireCandidate":true,"autowireMode":0,"beanClassName":"org.spring.learn.controller.TestControllerWithConstructor","constructorArgumentValues":{"argumentCount":3,"empty":false,"genericArgumentValues":[],"indexedArgumentValues":{0:{"converted":false,"value":"constructor controller"},1:{"converted":false,"value":11123},2:{"converted":false,"value":{"beanName":"testServiceImpl","toParent":false}}}},"dependencyCheck":0,"enforceDestroyMethod":true,"enforceInitMethod":true,"lenientConstructorResolution":true,"methodOverrides":{"empty":true,"overrides":[]},"nonPublicAccessAllowed":true,"primary":false,"propertyValues":{"converted":false,"empty":true,"propertyValueList":[],"propertyValues":[]},"prototype":false,"qualifiers":[],"resolvableType":{"array":false,"componentType":{"array":false,"componentType":{"$ref":"@"},"generics":[],"interfaces":[],"source":{"typeName":"org.springframework.core.ResolvableType$EmptyType@5442a311"},"superType":{"$ref":"@"},"type":{"$ref":"$.resolvableType.componentType.source"}},"generics":[],"interfaces":[],"rawClass":"org.spring.learn.controller.TestControllerWithConstructor","source":"org.spring.learn.controller.TestControllerWithConstructor","superType":{"array":false,"componentType":{"$ref":"$.resolvableType.componentType"},"generics":[],"interfaces":[],"rawClass":"java.lang.Object","source":"java.lang.Object","superType":{"$ref":"$.resolvableType.componentType"},"type":"java.lang.Object"},"type":"org.spring.learn.controller.TestControllerWithConstructor"},"resolvedAutowireMode":0,"role":0,"scope":"","singleton":true,"synthetic":false}

那换成xml格式的话

<bean name="testServiceImpl" class="org.spring.learn.service.impl.TestServiceImpl"/>

    <bean name="testControllerWithConstructor" class="org.spring.learn.controller.TestControllerWithConstructor">
        <constructor-arg index="0" value="constructor controller"/>
        <constructor-arg index="1" value="11123"/>
        <constructor-arg index="2" ref="testServiceImpl"/>
    </bean>

    <bean name="testControllerWithProperty" class="org.spring.learn.controller.TestControllerWithProperty">
        <property name="key" value="property"/>
        <property name="name" value="property controller"/>
        <property name="testService" ref="testServiceImpl"/>
    </bean>

上面转json文件，就是把AbstractBeanDefinition的beanClass加上了transient关键字，不让此属性序列化，就行了

这个地方有个注意点，就是当property注入的时候，属性对象set方法注入，值类型，用fastjson是转换不了的

 是RuntimeBeanReference类型。

代码一通瞎jb写，最后看看有没有问题

public static void main( String[] args )
    {
        //1,注入进去
        JsonContext jsonContext = new JsonContext("beanDefinition.json");

        //2,把bean获取出来，看看是不是工作正常的
        TestService testService = jsonContext.getBean(TestServiceImpl.class);
        TestControllerWithProperty testControllerWithProperty = jsonContext.getBean(TestControllerWithProperty.class);
        System.out.println(testService);
        System.out.println(testControllerWithProperty.getTestService());
    }

org.spring.learn.service.impl.TestServiceImpl@fad74ee
org.spring.learn.service.impl.TestServiceImpl@fad74ee

结果是正常的。ok的，暂时写到这，等会再增加constructor构造函数的逻辑吧