From 81c27d6856db6204a2406110a041e7cfdda2b450 Mon Sep 17 00:00:00 2001
From: wangyu <727842003@qq.com>
Date: Tue, 5 Jan 2021 17:28:16 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E5=A2=9E=E5=8A=A0bean=E8=AF=BB?=
 =?UTF-8?q?=E5=8F=96=E5=99=A8?=
MIME-Version: 1.0
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---
 .../framework/beans/meta/BeanController.java  | 40 ++++++++++++++++
 .../framework/beans/meta/BeanProperty.java    | 48 +++++++++++++++++++
 .../beans/meta/BeanPropertyType.java          | 44 +++++++++++++++++
 3 files changed, 132 insertions(+)
 create mode 100644 flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanController.java
 create mode 100644 flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanProperty.java
 create mode 100644 flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanPropertyType.java

diff --git a/flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanController.java b/flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanController.java
new file mode 100644
index 0000000..9364506
--- /dev/null
+++ b/flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanController.java
@@ -0,0 +1,40 @@
+package com.flyfish.framework.beans.meta;
+
+import com.flyfish.framework.bean.Result;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.BeanUtils;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * bean控制器，可以通过类直接返回bean信息
+ *
+ * @author wangyu
+ */
+@RestController
+@RequestMapping("beans")
+@Slf4j
+public class BeanController {
+
+    /**
+     * 通过类标识返回bean信息
+     *
+     * @return 结果
+     */
+    @GetMapping("")
+    public Result<List<BeanProperty>> beanInfo(String className) {
+        try {
+            return Result.ok(Arrays.stream(BeanUtils.getPropertyDescriptors(Class.forName(className)))
+                    .map(BeanProperty::form)
+                    .collect(Collectors.toList()));
+        } catch (ClassNotFoundException e) {
+            log.error(e.getMessage(), e);
+            return Result.error(e.getMessage());
+        }
+    }
+}
diff --git a/flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanProperty.java b/flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanProperty.java
new file mode 100644
index 0000000..31ddcff
--- /dev/null
+++ b/flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanProperty.java
@@ -0,0 +1,48 @@
+package com.flyfish.framework.beans.meta;
+
+import lombok.Data;
+import org.springframework.beans.BeanUtils;
+
+import java.beans.PropertyDescriptor;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * bean的属性描述
+ * 对应js的类型
+ *
+ * @author wangyu
+ */
+@Data
+public class BeanProperty {
+
+    // 属性名称
+    private String name;
+
+    // bean属性的类型，js类型
+    private BeanPropertyType type;
+
+    // 类型为object时，拥有子表单
+    private List<BeanProperty> children;
+
+    /**
+     * 来自属性解释器构造
+     * 支持对象嵌套
+     *
+     * @param descriptor 解释器
+     * @return 结果
+     */
+    public static BeanProperty form(PropertyDescriptor descriptor) {
+        BeanProperty property = new BeanProperty();
+        property.setName(descriptor.getName());
+        property.setType(BeanPropertyType.of(descriptor.getPropertyType()));
+        if (property.getType() == BeanPropertyType.OBJECT) {
+            List<BeanProperty> children = Arrays.stream(BeanUtils.getPropertyDescriptors(descriptor.getPropertyType()))
+                    .map(BeanProperty::form)
+                    .collect(Collectors.toList());
+            property.setChildren(children);
+        }
+        return property;
+    }
+}
diff --git a/flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanPropertyType.java b/flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanPropertyType.java
new file mode 100644
index 0000000..1ca226d
--- /dev/null
+++ b/flyfish-web/src/main/java/com/flyfish/framework/beans/meta/BeanPropertyType.java
@@ -0,0 +1,44 @@
+package com.flyfish.framework.beans.meta;
+
+import lombok.Getter;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Date;
+import java.util.List;
+
+/**
+ * bean属性的类型
+ * 包含java类型到js的映射
+ * 我们通过类型自动解析bean的缺省控件，并自动映射
+ * @author wangyu
+ */
+@Getter
+public enum BeanPropertyType {
+
+    STRING("String", CharSequence.class),
+    NUMBER("Number", Number.class),
+    BOOLEAN("Boolean", Boolean.class),
+    DATE("Date", Date.class),
+    ENUM("Enum", Enum.class),
+    LIST("Array", Collection.class),
+    OBJECT("Object", Object.class);
+
+    BeanPropertyType(String name, Class<?> ...classes) {
+        this.name = name;
+        this.classes = Arrays.asList(classes);
+    }
+
+    private final String name;
+
+    private final List<Class<?>> classes;
+
+    public static BeanPropertyType of(Class<?> clazz) {
+        for (BeanPropertyType type : values()) {
+            if (type.classes.stream().anyMatch(item -> item.isAssignableFrom(clazz))) {
+                return type;
+            }
+        }
+        return null;
+    }
+}