Spring安全依赖查找

依赖查找安全性比照

实体类Rumenz.java

package com.rumenz;public class Rumenz{    private Integer id;    private String name;    @Override    public String toString() {        return "Rumenz{" +                "id=" + id +                ", name='" + name + '\'' +                '}';    }    public Integer getId() {        return id;    }    public void setId(Integer id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }}

BeanFactory#getBean 繁多类型查找

package com.rumenz;import org.springframework.context.annotation.AnnotationConfigApplicationContext;import java.util.Map;public class DemoApplication {    public static void main(String[] args) {         AnnotationConfigApplicationContext ac=new AnnotationConfigApplicationContext();         ac.register(DemoApplication.class); //没有注册Rumenz.class         ac.refresh();         //通过BeanFactory#getBean         byBeanFactory(ac);         ac.close();    }    private static void byBeanFactory(AnnotationConfigApplicationContext ac) {        printBeanException("byBeanFactory",()->ac.getBean(Rumenz.class));    }    private static void printBeanException(String msg,  Runnable runnable) {        System.err.println("from---->>>"+msg);        try{            runnable.run();        }catch (Exception e){            e.printStackTrace();        }    }}

输入

因为没有注册Rumenz.class,所以查找报错,不平安

from---->>>byBeanFactoryorg.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.rumenz.Rumenz' available

ObjectFactory#getObject 繁多类型查找

package com.rumenz;import org.springframework.beans.factory.ObjectProvider;import org.springframework.context.annotation.AnnotationConfigApplicationContext;import java.util.Map;public class DemoApplication {    public static void main(String[] args) {         AnnotationConfigApplicationContext ac=new AnnotationConfigApplicationContext();         ac.register(DemoApplication.class);         ac.refresh();         //通过ObjectFactory#getObject         byObjectFactory(ac);         ac.close();    }    private static void byObjectFactory(AnnotationConfigApplicationContext ac) {        ObjectProvider<Rumenz> beanProvider = ac.getBeanProvider(Rumenz.class);        printBeanException("byObjectFactory",()->beanProvider.getObject());    }    private static void printBeanException(String msg,  Runnable runnable) {        System.err.println("from---->>>"+msg);        try{            runnable.run();        }catch (Exception e){            e.printStackTrace();        }    }}

输入

因为没有注册Rumenz.class,所以查找报错,不平安

from---->>>byObjectFactoryorg.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.rumenz.Rumenz' available

ObjectProvider#getIfAvailable 繁多类型查找

package com.rumenz;import org.springframework.beans.factory.ObjectProvider;import org.springframework.context.annotation.AnnotationConfigApplicationContext;import java.util.Map;public class DemoApplication {    public static void main(String[] args) {         AnnotationConfigApplicationContext ac=new AnnotationConfigApplicationContext();         ac.register(DemoApplication.class);         ac.refresh();         //通过ObjectProvider#getIfAvailable         byObjectProvider(ac);         ac.close();    }    private static void byObjectProvider(AnnotationConfigApplicationContext ac) {        ObjectProvider<Rumenz> beanProvider = ac.getBeanProvider(Rumenz.class);        printBeanException("byObjectProvider",()->beanProvider.getIfAvailable());    }    private static void printBeanException(String msg,  Runnable runnable) {        System.err.println("from---->>>"+msg);        try{            runnable.run();        }catch (Exception e){            e.printStackTrace();        }    }}

输入

不存在Rumenz.class,也不会报错,平安

from---->>>byObjectProvider

ListableBeanFactory#getBeansOfType 汇合查找

package com.rumenz;import org.springframework.beans.factory.ObjectProvider;import org.springframework.context.annotation.AnnotationConfigApplicationContext;import java.util.Map;public class DemoApplication {    public static void main(String[] args) {         AnnotationConfigApplicationContext ac=new AnnotationConfigApplicationContext();         ac.register(DemoApplication.class);         ac.refresh();         // 通过ListableBeanFactory#getBeansOfType 汇合类型查找         byListableBeanFactory(ac);         ac.close();    }    private static void byListableBeanFactory(AnnotationConfigApplicationContext ac) {        printBeanException("byListableBeanFactory",()->ac.getBeansOfType(Rumenz.class));    }    private static void printBeanException(String msg,  Runnable runnable) {        System.err.println("from---->>>"+msg);        try{            runnable.run();        }catch (Exception e){            e.printStackTrace();        }    }}

输入

不存在Rumenz.class,也不会报错,平安

from---->>>byListableBeanFactory

ObjectProvider#Stream 汇合类型查找

package com.rumenz;import org.springframework.beans.factory.ObjectProvider;import org.springframework.context.annotation.AnnotationConfigApplicationContext;import java.util.Map;public class DemoApplication {    public static void main(String[] args) {         AnnotationConfigApplicationContext ac=new AnnotationConfigApplicationContext();         ac.register(DemoApplication.class);         ac.refresh();                 // 通过ObjectProvider#stream         byObjectProviderStream(ac);         ac.close();    }    private static void byObjectProviderStream(AnnotationConfigApplicationContext ac) {        ObjectProvider<Rumenz> beanProvider = ac.getBeanProvider(Rumenz.class);        printBeanException("byObjectProviderStream",()->beanProvider.stream().forEach(System.out::println));    }    private static void printBeanException(String msg,  Runnable runnable) {        System.err.println("from---->>>"+msg);        try{            runnable.run();        }catch (Exception e){            e.printStackTrace();        }    }}

输入

不存在Rumenz.class,也不会报错,平安

from---->>>byObjectProviderStream

源码:https://github.com/mifunc/Spr...

原文: https://rumenz.com/rumenbiji/.html