去掉joor的依赖，并重构相关反射代码 for #58

2025-12-17 13:08:02 +08:00 · 2016-10-21 15:23:23 +08:00
parent 5885ce826e
commit 4b88c3d426
6 changed files with 96 additions and 132 deletions
--- a/weixin-java-common/src/main/java/me/chanjar/weixin/common/util/BeanUtils.java
+++ b/weixin-java-common/src/main/java/me/chanjar/weixin/common/util/BeanUtils.java
@@ -0,0 +1,82 @@
+package me.chanjar.weixin.common.util;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import com.thoughtworks.xstream.annotations.XStreamAlias;
+import me.chanjar.weixin.common.annotation.Required;
+import me.chanjar.weixin.common.bean.result.WxError;
+import me.chanjar.weixin.common.exception.WxErrorException;
+
+import java.lang.reflect.Field;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * <pre>
+ * bean操作的一些工具类
+ * Created by Binary Wang on 2016-10-21.
+ * @author <a href="https://github.com/binarywang">binarywang(Binary Wang)</a>
+ * </pre>
+ */
+public class BeanUtils {
+
+  /**
+   * 检查bean里标记为@Required的field是否为空，为空则抛异常
+   * @param bean 要检查的bean对象
+   * @throws WxErrorException
+   */
+  public static void checkRequiredFields(Object bean) throws WxErrorException {
+    List<String> nullFields = Lists.newArrayList();
+
+    for (Field field : bean.getClass().getDeclaredFields()) {
+      try {
+        boolean isAccessible = field.isAccessible();
+        field.setAccessible(true);
+        if (field.isAnnotationPresent(Required.class)
+          && field.get(bean) == null) {
+          nullFields.add(field.getName());
+        }
+        field.setAccessible(isAccessible);
+      } catch (SecurityException | IllegalArgumentException
+        | IllegalAccessException e) {
+        e.printStackTrace();
+      }
+    }
+
+    if (!nullFields.isEmpty()) {
+      throw new WxErrorException(WxError.newBuilder().setErrorMsg("必填字段 " + nullFields + " 必须提供值").build());
+    }
+  }
+
+  /**
+   * 将bean按照@XStreamAlias标识的字符串内容生成以之为key的map对象
+   * @param bean 包含@XStreamAlias的xml bean对象
+   * @return map对象
+   */
+  public static Map<String, String> xmlBean2Map(Object bean) {
+    Map<String, String> result = Maps.newHashMap();
+    for (Field field : bean.getClass().getDeclaredFields()) {
+      try {
+        boolean isAccessible = field.isAccessible();
+        field.setAccessible(true);
+        if (field.get(bean) == null) {
+          field.setAccessible(isAccessible);
+          continue;
+        }
+
+        if (field.isAnnotationPresent(XStreamAlias.class)) {
+          result.put(field.getAnnotation(XStreamAlias.class).value(),
+            field.get(bean).toString());
+        }
+
+        field.setAccessible(isAccessible);
+      } catch (SecurityException | IllegalArgumentException
+        | IllegalAccessException e) {
+        e.printStackTrace();
+      }
+
+    }
+
+    return result;
+  }
+}