Spring Boot Read property value in configuration file (APPLICATION.YML) 111

In spring boot, a few simple steps to read the various types of property values in the configuration file (APPLICATION.YML):

1, the introduction of dependency:

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2. <!--support @ConfigurationProperties annotations--
4. <dependency>
6. <groupId>org.springframework.boot</groupId>
8. <artifactid>spring-boot-configuration-processor</artifactid>
10. <optional>true</optional>
12. </Dependency>

2. Configure the values for each property in the configuration file (APPLICATION.YML):

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1. myprops:  #自定义的属性和值   
2.   simpleProp:  simplepropvalue  
3. &NBSP;&NBSP;ARRAYPROPS:&NBSP;1,2,3,4,5&NBSP;&NBSP;
4.   listprop1:  
5.     - name: abc   
6.       value: abcvalue  
7.      - name: efg  
8.       value:  efgvalue  
9. &NBSP;&NBSP;LISTPROP2:&NBSP;&NBSP;
10.     -  config2value1  
11.     - config2vavlue2  
12.   mapprops:  
13.     key1: value1   
14.     key2: value2  

3. Create a bean to receive configuration information:

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2. @Component
4. @ConfigurationProperties (prefix="Myprops") //Receive Myprops properties in Application.yml
6. Public class Myprops {
8. private String Simpleprop;
10. private string[] arrayprops;
12. private list<map<string, string>> listProp1 = new arraylist<> (); //Receive the attribute value inside the Prop1
14. private List<string> listProp2 = new arraylist<> (); //Receive the attribute value inside the PROP2
16. private map<string, string> mapprops = new hashmap<> (); //Receive the attribute value inside the Prop1
20. Public String Getsimpleprop () {
22. return simpleprop;
24. }
28. the//string type must need a setter to receive the attribute value; maps, collections, and arrays don't need
30. public void Setsimpleprop (String simpleprop) {
32. this.simpleprop = Simpleprop;
34. }
38. Public list<map<string, string>> getListProp1 () {
40. return LISTPROP1;
42. }
44. Public list<string> GetListProp2 () {
46. return LISTPROP2;
48. }
52. Public string[] Getarrayprops () {
54. return arrayprops;
56. }
60. public void Setarrayprops (string[] arrayprops) {
62. this.arrayprops = arrayprops;
64. }
68. Public map<string, string> getmapprops () {
70. return mapprops;
72. }
76. public void Setmapprops (map<string, string> mapprops) {
78. this.mapprops = mapprops;
80. }
82. }

Once started, the attributes inside the bean will automatically receive the configured values.

4. Unit Test Cases:

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2. @Autowired
4. private Myprops Myprops;
8. @Test
10. public void Propstest () throws jsonprocessingexception {
12. System.out.println ("Simpleprop:" + myprops.getsimpleprop ());
14. System.out.println ("arrayprops:" + objectmapper.writevalueasstring (Myprops.getarrayprops ()));
16. System.out.println ("LISTPROP1:" + objectmapper.writevalueasstring (MYPROPS.GETLISTPROP1 ()));
18. System.out.println ("LISTPROP2:" + objectmapper.writevalueasstring (MYPROPS.GETLISTPROP2 ()));
20. System.out.println ("mapprops:" + objectmapper.writevalueasstring (Myprops.getmapprops ()));
22. }

Test results:

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1. Simpleprop:simplepropvalue
2. Arrayprops: ["1", "2", "3", "4", "5"]
3. LISTPROP1: [{"Name": "abc", "Value": "Abcvalue"},{"name": "EFG", "Value": "Efgvalue"}]
4. LISTPROP2: ["config2value1", "config2vavlue2"]
5. Mapprops: {"Key1": "Value1", "Key2": "Value2"}

Source Code Reference: Https://github.com/xujijun/my-spring-boot

Spring Boot Read property value in configuration file (APPLICATION.YML) 111