搜索中心对象中null属性字段赋值为空字符串

2023-01-04 10:14:36 +08:00
parent 1c6a24b7e9
commit a8ebce11c3
2 changed files with 55 additions and 5 deletions
@@ -0,0 +1,34 @@
+package com.adc.da.utils.util;
+
+import java.lang.reflect.Field;
+
+public class NullToEmptyUtil {
+
+    /**
+     * 把对象中的 String 类型的null字段，转换为空字符串
+     *
+     * @param <T> 待转化对象类型
+     * @param cls 待转化对象
+     * @return 转化好的对象
+     */
+    public static <T> T noNullStringAttr(T cls) {
+        Field[] fields = cls.getClass().getDeclaredFields();
+        if (fields == null || fields.length == 0) {
+            return cls;
+        }
+        for (Field field : fields) {
+            if ("String".equals(field.getType().getSimpleName())) {
+                field.setAccessible(true);
+                try {
+                    Object value = field.get(cls);
+                    if (value == null) {
+                        field.set(cls, "");
+                    }
+                } catch (IllegalArgumentException | IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+        return cls;
+    }
+}