[英]Spring Boot - inject static map from application.yml
I refered Spring Boot - inject map from application.yml for injecting map from application.yml file 我引用了Spring Boot- 从application.yml注入映射以从application.yml文件注入映射
My application.yml snippet is below 我的application.yml片段如下
easy.app.pairMap:
test1: 'value1'
test2: 'value2'
Properties file is like below 属性文件如下所示
@Component
@Configuration
@ConfigurationProperties("easy.app")
@EnableConfigurationProperties
public class TestProperties {
private Map<String, String> pairMap= new HashMap<String, String>();
public void setPairMap(Map<String, String> pairMap) {
this.pairMap= pairMap;
}
} }
The above given code works .Map is not read from application.yml file when the ' pairMap ' is set as static as below. 上面给出的代码有效,当' pairMap '设置为static时,不会从application.yml文件中读取Map 。
@Component
@Configuration
@ConfigurationProperties("easy.app")
@EnableConfigurationProperties
public class TestProperties {
private static Map<String, String> pairMap= new HashMap<String, String>();
public static void setPairMap(Map<String, String> pairMap) {
TestProperties .pairMap= pairMap;
}
} }
PS : The issue is only when injecting map , but not on injecting string. PS:问题仅在注入map时出现,而在注入string上没有。 Why is this behaviour? 为什么会这样?
ie the following injection of string in the following configuration works , but not the map injection 即在以下配置中进行以下字符串注入,但不会进行地图注入
easy.app.key1: 'abc'
easy.app.pairMap:
test1: 'value1'
test2: 'value2'
Properties file like below 属性文件如下
@Component
@Configuration
@ConfigurationProperties("easy.app")
@EnableConfigurationProperties
public class TestProperties {
private Map<String, String> pairMap= new HashMap<String, String>();
private static String key1;
public static void setPairMap(Map<String, String> pairMap) {
this.pairMap= pairMap;
}
public static void setKey1(String key1) {
TestProperties.key1= key1;
}
public String getKey1(){
return key1;
}
Fix with this: 解决此问题:
easy:
app:
pairMap:
test1: value1
test2: value2
@CompileStatic
@Component
@EnableConfigurationProperties
class ConfigHolder {
@Value(value = '${easy.app.pairMap.test1}')
String test1Valse;
@Value(value = '${easy.app.pairMap.test2}')
String test2Valse;
}
@CompileStatic
@Configuration
@EnableConfigurationProperties
public class TestProperties {
@Autowired
ConfigHolder configHolder;
private Map<String, String> pairMap= new HashMap<String, String>();
public void setPairMap(Map<String, String> pairMap) {
if(pairMap != null && !pairMap.isNotEmpty()) {
this.pairMap = pairMap;
} else {
this.pairMap.put("test 1", ${configHolder.test1Valse});
this.pairMap.put("test 2", ${configHolder.test2Valse});
}
}
} }
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