Add ValidationException Cause

.github/workflows/build.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java_version: [11, 17, 20]
+        java_version: [17, 20]
         os: [ubuntu-latest]
 
     steps:

http-api/src/main/java/io/avaje/http/api/ValidationException.java

@@ -4,68 +4,62 @@
 
 /**
  * Exception used with Validator.
- * <p>
- * Typically this is used when validating a bean populated by request
- * body content.
- * <p>
- * Generally this exception type is registered with an exception handler
- * and configured to return a 422 or 400 http status response with the
- * errors as a map of fields to error message.
+ *
+ * <p>Typically this is used when validating a bean populated by request body content.
+ *
+ * <p>Generally this exception type is registered with an exception handler and configured to return
+ * a 422 or 400 http status response with the errors as a map of fields to error message.
  */
 public class ValidationException extends IllegalArgumentException {
 
+  private static final long serialVersionUID = 1L;
+
   private int status = 422;
 
   private Map<String, Object> errors;
 
-  /**
-   * Create with a message.
-   */
+  /** Create with a message. */
   public ValidationException(String message) {
     super(message);
   }
 
-  /**
-   * Create with a status and message.
-   */
+  /** Create with a status and message. */
   public ValidationException(int status, String message) {
     super(message);
     this.status = status;
   }
 
-  /**
-   * Create with a status message and errors.
-   */
+  /** Create with a status message and errors. */
   public ValidationException(int status, String message, Map<String, Object> errors) {
     super(message);
     this.status = status;
     this.errors = errors;
   }
 
-  /**
-   * Return the suggested HTTP status to use in the response.
-   */
+  /** Create with a status message and errors. */
+  public ValidationException(
+      int status, String message, Throwable cause, Map<String, Object> errors) {
+    super(message, cause);
+    this.status = status;
+    this.errors = errors;
+  }
+
+  /** Return the suggested HTTP status to use in the response. */
   public int getStatus() {
     return status;
   }
 
-  /**
-   * Set the suggested HTTP status to use in the response.
-   */
+  /** Set the suggested HTTP status to use in the response. */
   public void setStatus(int status) {
     this.status = status;
   }
 
-  /**
-   * Return the errors typically as a map of field to error message.
-   */
+  /** Return the errors typically as a map of field to error message. */
   public Map<String, Object> getErrors() {
     return errors;
   }
 
-  /**
-   * Set the errors.
-   */
+  /** Set the errors. */
   public void setErrors(Map<String, Object> errors) {
     this.errors = errors;
   }

http-generator-core/src/main/java/io/avaje/http/generator/core/ElementReader.java

@@ -283,12 +283,12 @@ void buildApiDocumentation(MethodDocBuilder methodDoc) {
   void writeValidate(Append writer) {
     if (!contextType && typeHandler == null) {
       if (useValidation) {
-        writer.append("validator.validate(%s, ", varName);
+        writer.append("var validLanguage = ");
         platform().writeAcceptLanguage(writer);
+        writer.append(";").eol();
+        writer.append("    validator.validate(%s, validLanguage", varName);
 
-        if (!validationGroups.isEmpty()) {
-          validationGroups.forEach(g -> writer.append(", %s", Util.shortName(g)));
-        }
+        validationGroups.forEach(g -> writer.append(", %s", Util.shortName(g)));
 
         writer.append(");").eol();
       } else {