jpa配置_spring boot jpa 配置了yml文件后怎么扫描包

在spring boot中，简单几步，读取配置文件（application.yml）中各种不同类型的属性值：

1、引入依赖：

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org.springframework.boot

spring-boot-configuration-processor

true

2、配置文件（application.yml）中配置各个属性的值：

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myProps: #自定义的属性和值

simpleProp: simplePropValue

arrayProps: 1,2,3,4,5

listProp1:

- name: abc

value: abcValue

- name: efg

value: efgValue

listProp2:

- config2Value1

- config2Vavlue2

mapProps:

key1: value1

key2: value2

3、创建一个bean来接收配置信息：

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@Component

@ConfigurationProperties(prefix="myProps"掘橘锋) //接收application.yml中的myProps下面的属性

public class MyProps {

private String simpleProp;

private String[] arrayProps;

private List> listProp1 = new ArrayList<>(); //接收prop1里面的属性值

private List listProp2 = new ArrayList<>(); //接收prop2里面的属性值

private Map mapProps = new HashMap<>(); //接收prop1里面的属性值

public String getSimpleProp() {

return simpleProp;

}

/伍侍/String类型的一定判晌需要setter来接收属性值；maps, collections, 和 arrays 不需要

public void setSimpleProp(String simpleProp) {

this.simpleProp = simpleProp;

public List> getListProp1() {

return listProp1;

public List getListProp2() {

return listProp2;

public String[] getArrayProps() {

return arrayProps;

public void setArrayProps(String[] arrayProps) {

this.arrayProps = arrayProps;

public Map getMapProps() {

return mapProps;

public void setMapProps(Map mapProps) {

this.mapProps = mapProps;

启动后，这个bean里面的属性就会自动接收配置的值了。

4、单元测试用例：

@Autowired

private MyProps myProps;

@Test

public void propsTest() throws JsonProcessingException {

System.out.println("simpleProp: " ◆ myProps.getSimpleProp());

System.out.println("arrayProps: " ◆ objectMapper.writeValueAsString(myProps.getArrayProps()));

System.out.println("listProp1: " ◆ objectMapper.writeValueAsString(myProps.getListProp1()));

System.out.println("listProp2: " ◆ objectMapper.writeValueAsString(myProps.getListProp2()));

System.out.println("mapProps: " ◆ objectMapper.writeValueAsString(myProps.getMapProps()));

测试结果：

arrayProps: ["1","2","3","4","5"]

listProp1: [{"name":"abc","value":"abcValue"},{"name":"efg","value":"efgValue"}]

listProp2: ["config2Value1","config2Vavlue2"]

mapProps: {"key1":"value1","key2":"value2"}

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