custom failureAnalyzer (#1559)

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

@@ -0,0 +1,15 @@
+package com.baeldung.failureanalyzer;
+
+import javax.annotation.security.RolesAllowed;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class FailureAnalyzerApplication {
+    @RolesAllowed("*")
+    public static void main(String[] args) {
+        System.setProperty("security.basic.enabled", "false");
+        SpringApplication.run(FailureAnalyzerApplication.class, args);
+    }
+}

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

@@ -0,0 +1,25 @@
+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 "The bean " + ex.getBeanName() //
+                + " could not be injected as " + ex.getRequiredType().getName() //
+                + " because it is of type " + ex.getActualType().getName();
+    }
+
+    private String getAction(BeanNotOfRequiredTypeException ex) {
+        return "Consider creating a bean with name "+ ex.getBeanName() //
+        + " of type " + ex.getRequiredType().getName();
+    }
+
+}

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

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

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

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

spring-boot/src/main/resources/META-INF/spring.factories

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