Spring Boot MyBatisの例外の投げられ方を確認する

springbootmybatis/.gitignore

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+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/

springbootmybatis/build.gradle

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+plugins {
+	id 'org.springframework.boot' version '2.2.13.RELEASE'
+	id 'io.spring.dependency-management' version '1.0.11.RELEASE'
+	id 'java'
+}
+
+group = 'com.example'
+version = '0.0.1-SNAPSHOT'
+sourceCompatibility = '11'
+
+configurations {
+	compileOnly {
+		extendsFrom annotationProcessor
+	}
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:2.1.4'
+	compileOnly 'org.projectlombok:lombok'
+	runtimeOnly 'com.microsoft.sqlserver:mssql-jdbc'
+	annotationProcessor 'org.projectlombok:lombok'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+}
+
+test {
+	useJUnitPlatform()
+}

springbootmybatis/gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.9-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

springbootmybatis/settings.gradle

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+rootProject.name = 'springbootmybatis'

springbootmybatis/src/main/java/com/example/springbootmybatis/SpringbootmybatisApplication.java

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+package com.example.springbootmybatis;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SpringbootmybatisApplication implements CommandLineRunner {
+
+	@Autowired
+	private TestMapper testMapper;
+
+	public static void main(String[] args) {
+		SpringApplication.run(SpringbootmybatisApplication.class, args);
+	}
+
+	@Override
+	public void run(String... args) throws Exception {
+		try {
+			while (true) {
+				System.out.println(testMapper.getUserName());
+				Thread.sleep(2);
+			}
+		} catch (Throwable e) {
+			System.out.println("e.getClass()");
+			printException(e.getClass());
+			System.out.println("e.getCause().getClass()");
+			printException(e.getCause().getClass());
+		}
+	}
+
+	private void printException(Class<?> e) {
+		String className = e.getCanonicalName();
+		System.out.println(className);
+		if (e.getSuperclass() != null) {
+			printException(e.getSuperclass());
+		}
+	}
+}