Improve analysis of bind failures caused by a conversion failure

Closes gh-13357

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/diagnostics/analyzer/BindFailureAnalyzer.java

@@ -70,6 +70,12 @@ class BindFailureAnalyzer extends AbstractFailureAnalyzer<BindException> {
 	}
 
 	private String getMessage(BindException cause) {
+		ConversionFailedException conversionFailure = findCause(cause,
+				ConversionFailedException.class);
+		if (conversionFailure != null) {
+			return "failed to convert " + conversionFailure.getSourceType() + " to "
+					+ conversionFailure.getTargetType();
+		}
 		Throwable failure = cause;
 		while (failure.getCause() != null) {
 			failure = failure.getCause();

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/diagnostics/analyzer/BindFailureAnalyzerTests.java

@@ -62,10 +62,10 @@ public class BindFailureAnalyzerTests {
 	@Test
 	public void bindExceptionDueToOtherFailure() {
 		FailureAnalysis analysis = performAnalysis(GenericFailureConfiguration.class,
-				"test.foo.value=${BAR}");
-		assertThat(analysis.getDescription()).contains(failure("test.foo.value", "${BAR}",
+				"test.foo.value=alpha");
+		assertThat(analysis.getDescription()).contains(failure("test.foo.value", "alpha",
 				"\"test.foo.value\" from property source \"test\"",
-				"Could not resolve placeholder 'BAR' in value \"${BAR}\""));
+				"failed to convert java.lang.String to int"));
 	}
 
 	@Test
@@ -187,13 +187,13 @@ public class BindFailureAnalyzerTests {
 	@ConfigurationProperties("test.foo")
 	static class GenericFailureProperties {
 
-		private String value;
+		private int value;
 
-		public String getValue() {
+		public int getValue() {
 			return this.value;
 		}
 
-		public void setValue(String value) {
+		public void setValue(int value) {
 			this.value = value;
 		}