当用户从属性文件注册时，我想检索默认设置的值。
为此，我创建了一个类来管理自定义属性
默认属性.kt
@PropertySource("classpath:config/defaults.yml")
@ConfigurationProperties("app.defaults")
class DefaultProperties {
lateinit var settings: Settings
class Settings {
lateinit var keys: Keys
var language: String = "en-US"
var timezone: String = "GMT"
var profilePicture: String = "default"
var twoFactorAuth: Boolean = false
class Keys{
var language: String = "language"
var timezone: String = "timezone"
var profilePicture: String = "profile-picture"
var twoFactorAuth: String = "two-factor-auto"
}
}
}
然后，我调整defaults.yml中的属性，例如：
app.defaults:
settings:
language: "fr-FR"
two_factor: true
之后，我尝试自动装配属性
设置工具.kt
@Component
class SettingsUtil{
@Autowired
lateinit var defaultProperties: DefaultProperties
fun generateDefaultSettingsMap():MutableMap<String, String>{
val defaultSettings = defaultProperties.settings
val defaultKeys = defaultSettings.keys
val defaultMap = mutableMapOf<String, String>()
defaultMap[defaultKeys.language] = defaultSettings.language
defaultMap[defaultKeys.timezone] = defaultSettings.timezone
defaultMap[defaultKeys.profilePicture] = defaultSettings.profilePicture
defaultMap[defaultKeys.twoFactorAuth] = defaultSettings.twoFactorAuth.toString()
return defaultMap
}
最后，generateDefaultSettingsMap()从实体调用
用户.kt
@Entity
@Immutable
@Cache(region = "userCache", usage = CacheConcurrencyStrategy.READ_ONLY)
data class User(
// Other code
@ElementCollection
@CollectionTable(name = "settings", joinColumns= [JoinColumn(name = "user_id", referencedColumnName = "user_id")])
@MapKeyColumn(name = "key")
@Column(name="value")
var settings: MutableMap<String, String> = SettingsUtil().generateDefaultOptionsMap()
我尝试注册用户时得到的结果是
kotlin.UninitializedPropertyAccessException: lateinit property defaultProperties has not been initialized
这是完整的堆栈跟踪
kotlin.UninitializedPropertyAccessException: lateinit property defaultProperties has not been initialized
at com.dinarect.dinarectapi.msprofile.util.SettingsUtil.getDefaultProperties(SettingsUtil.kt:18)
at com.dinarect.dinarectapi.msprofile.util.SettingsUtil.generateDefaultOptionsMap(SettingsUtil.kt:41)
at com.dinarect.dinarectapi.msprofile.persistence.entity.User.<init>(User.kt:74)
at com.dinarect.dinarectapi.msprofile.logic.UserServiceImpl.registerUser(UserServiceImpl.kt:69)
at com.dinarect.dinarectapi.msprofile.controller.UserController.registerUser(UserController.kt:67)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:215)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:142)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:998)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:901)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:875)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.actuate.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:90)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:154)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:122)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:107)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:770)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
有什么想法吗？
注意
IDE 一直显示“重新运行 spring boot 配置注释处理器以更新生成的元数据”。
我添加
@component到SettingsUtil是因为@Autowired没有它就无法识别。