support print fields in parent class. #435

core/src/main/java/com/taobao/arthas/core/GlobalOptions.java

@@ -99,4 +99,14 @@ public class GlobalOptions {
     )
     public static volatile String jobTimeout = "1d";
 
+    /**
+     * 是否打印parent类里的field
+     * @see com.taobao.arthas.core.view.ObjectView
+     */
+    @Option(level = 1,
+            name = "print-parent-fields",
+            summary = "Option to print all fileds in parent class",
+            description = "This option enables print files in parent class, default value true."
+    )
+    public static volatile boolean printParentFields = true;
 }

core/src/main/java/com/taobao/arthas/core/view/ObjectView.java

@@ -582,7 +582,22 @@ public class ObjectView implements View {
                     appendStringBuilder(buf, format("@%s[%s]", className, obj));
                 } else {
                     appendStringBuilder(buf, format("@%s[", className));
-                    final Field[] fields = obj.getClass().getDeclaredFields();
+                    List<Field> fields = new ArrayList<Field>();
+                    Class objClass = obj.getClass();
+                    if (GlobalOptions.printParentFields) {
+                        // 当父类为null的时候说明到达了最上层的父类(Object类).
+                        while (objClass != null) {
+                            for (Field field : objClass.getDeclaredFields()) {
+                                fields.add(field);
+                            }
+                            objClass = objClass.getSuperclass();
+                        }
+                    } else {
+                        for (Field field : objClass.getDeclaredFields()) {
+                            fields.add(field);
+                        }
+                    }
+
                     if (null != fields) {
                         for (Field field : fields) {
 
@@ -620,17 +635,6 @@ public class ObjectView implements View {
         }
     }
 
-    /**
-     * 是否根节点
-     *
-     * @param deep 深度
-     * @return true:根节点 / false:非根节点
-     */
-    private static boolean isRoot(int deep) {
-        return deep == 0;
-    }
-
-
     /**
      * 是否展开当前深度的节点
      *

core/src/test/java/com/taobao/arthas/core/view/ObjectViewTest.java

@@ -266,4 +266,41 @@ public class ObjectViewTest {
             return new NestedClass(code);
         }
     }
+
+    /**
+     * 显示基类属性值
+     */
+    @Test
+    public void testObjectViewBaseFieldValue() {
+        SonBean sonBean = new SonBean();
+        sonBean.setI(10);
+        sonBean.setJ("test");
+
+        ObjectView objectView = new ObjectView(sonBean, 3, 100);
+        Assert.assertTrue(objectView.draw().contains("i=@Integer[10]"));
+    }
+
+    private class BaseBean {
+        private int i;
+
+        public int getI() {
+            return i;
+        }
+
+        public void setI(int i) {
+            this.i = i;
+        }
+    }
+
+    private class SonBean extends BaseBean {
+        private String j;
+
+        public String getJ() {
+            return j;
+        }
+
+        public void setJ(String j) {
+            this.j = j;
+        }
+    }
 }