JAVA-86: spring-boot-failure-analyzer

spring-boot-modules/spring-boot-basic-customization/pom.xml

@@ -16,6 +16,11 @@
     </parent>
 
     <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
@@ -27,5 +32,4 @@
             <scope>test</scope>
         </dependency>
     </dependencies>
-
 </project>

spring-boot-modules/spring-boot-basic-customization/src/main/java/com/baeldung/failureanalyzer/FailureAnalyzerApplication.java

@@ -0,0 +1,14 @@
+package com.baeldung.failureanalyzer;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+import javax.annotation.security.RolesAllowed;
+
+@SpringBootApplication
+public class FailureAnalyzerApplication {
+    @RolesAllowed("*")
+    public static void main(String[] args) {
+        SpringApplication.run(FailureAnalyzerApplication.class, args);
+    }
+}

spring-boot-modules/spring-boot-basic-customization/src/main/java/com/baeldung/failureanalyzer/MyBeanNotOfRequiredTypeFailureAnalyzer.java

@@ -0,0 +1,22 @@
+package com.baeldung.failureanalyzer;
+
+import org.springframework.beans.factory.BeanNotOfRequiredTypeException;
+import org.springframework.boot.diagnostics.AbstractFailureAnalyzer;
+import org.springframework.boot.diagnostics.FailureAnalysis;
+
+public class MyBeanNotOfRequiredTypeFailureAnalyzer extends AbstractFailureAnalyzer<BeanNotOfRequiredTypeException> {
+
+    @Override
+    protected FailureAnalysis analyze(Throwable rootFailure, BeanNotOfRequiredTypeException cause) {
+        return new FailureAnalysis(getDescription(cause), getAction(cause), cause);
+    }
+
+    private String getDescription(BeanNotOfRequiredTypeException ex) {
+        return String.format("The bean %s could not be injected as %s because it is of type %s", ex.getBeanName(), ex.getRequiredType().getName(), ex.getActualType().getName());
+    }
+
+    private String getAction(BeanNotOfRequiredTypeException ex) {
+        return String.format("Consider creating a bean with name %s of type %s", ex.getBeanName(), ex.getRequiredType().getName());
+    }
+
+}

spring-boot-modules/spring-boot-basic-customization/src/main/java/com/baeldung/failureanalyzer/MyDAO.java

@@ -0,0 +1,5 @@
+package com.baeldung.failureanalyzer;
+
+public class MyDAO {
+
+}

spring-boot-modules/spring-boot-basic-customization/src/main/java/com/baeldung/failureanalyzer/MySecondDAO.java

@@ -0,0 +1,8 @@
+package com.baeldung.failureanalyzer;
+
+import org.springframework.stereotype.Repository;
+
+@Repository("myDAO")
+public class MySecondDAO {
+
+}

spring-boot-modules/spring-boot-basic-customization/src/main/java/com/baeldung/failureanalyzer/MyService.java

@@ -0,0 +1,13 @@
+package com.baeldung.failureanalyzer;
+
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+
+@Service
+public class MyService {
+
+    @Resource(name = "myDAO")
+    private MyDAO myDAO;
+
+}

spring-boot-modules/spring-boot-basic-customization/src/main/resources/META-INF/spring.factories

@@ -0,0 +1,2 @@
+org.springframework.boot.diagnostics.FailureAnalyzer=com.baeldung.failureanalyzer.MyBeanNotOfRequiredTypeFailureAnalyzer
+