DependsOn注解

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1.简介

指定Spring容器初始化当前Bean之前 先初始化所依赖的Bean

2.使用(如下DependsOn001依赖DependsOn002)

@Component
@DependsOn(value = {"dependsOn002"})
public class DependsOn001 {

    public DependsOn001() {
        System.out.println("DependsOn001 init");
    }
}

@Component
public class DependsOn002 {

    public DependsOn002() {
        System.out.println("DependsOn002 init");
    }
}

3.结果

不加DependsOn输出结果为
DependsOn001 init
DependsOn002 init

加完之后输出结果为
DependsOn002 init
DependsOn001 init