queryForList時のIllegalStateExceptionについて

実現したいこと

• [ DBからユーザー情報を取得したい ]

前提

ユーザーが入力したidとpassを含んだSQLを投げ、ユーザー情報を取得して返すというメソッドを作りたいです。

発生している問題・エラーメッセージ

Whitelabel Error Page This application has no explicit mapping for /error, so you are seeing this as a fallback. Sun Jul 02 16:31:47 JST 2023 There was an unexpected error (type=Internal Server Error, status=500). No DataSource set java.lang.IllegalStateException: No DataSource set at org.springframework.util.Assert.state(Assert.java:76) at org.springframework.jdbc.support.JdbcAccessor.obtainDataSource(JdbcAccessor.java:78) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:646) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:713) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:744) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:757) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:810) at org.springframework.jdbc.core.JdbcTemplate.queryForList(JdbcTemplate.java:942) at com.example.demo.user.repository.UserDaoImpl.searchUser(UserDaoImpl.java:26) at com.example.demo.WebAppController.login(WebAppController.java:25) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:568) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:207) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:152) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:884) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1081) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:974) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1011) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:914) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:590) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:166) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:391) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:894) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1741) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:833)

該当のソースコード

Java

1 @Override2 public User searchUser(int userId, String userPass) {3 String sql = "SELECT user_name FROM user WHERE user_id = ? AND user_pass = ?";4 List<Map<String, Object>> result = jdbcTemplate.queryForList(sql, userId, userPass);5 if(result.isEmpty()) {6 User noHitUser = new User();7 noHitUser.setUserId(null);8 noHitUser.setUserName(null);9 noHitUser.setUserPass(null);10 return noHitUser;11 }12 List<User> userList = new ArrayList<User>();13 for(Map<String, Object> rr : result) {14 User hitUser = new User();15 hitUser.setUserId((int)rr.get("userId"));16 hitUser.setUserName((String)rr.get("userName"));17 hitUser.setUserPass((String)rr.get("userPass"));18 userList.add(hitUser);19 }20 User loginUser = null;21 if(!userList.isEmpty()) {22 loginUser = userList.get(0);23 }24 return loginUser;25 }26

試したこと

・No DataSource setとあるのでapplication.propertiesを見たのですが、正しく設定されていました。

補足情報（FW/ツールのバージョンなど）

DB：h2DB
JDK：11
ビルドツール：Maven
Spring：3.1.2-SNAPSHOT

自力では行き詰ってしまったため、何卒ご助力いただければ幸いです。
よろしくお願いいたします。