fix json

hutool-json/src/main/java/cn/hutool/json/InternalJSONUtil.java

@@ -1,5 +1,6 @@
 package cn.hutool.json;
 
+import cn.hutool.core.bean.copier.CopyOptions;
 import cn.hutool.core.convert.Convert;
 import cn.hutool.core.util.ArrayUtil;
 import cn.hutool.core.util.CharUtil;
@@ -191,4 +192,19 @@ public final class InternalJSONUtil {
 
 		return false;
 	}
+
+	/**
+	 * 将{@link JSONConfig}参数转换为Bean拷贝所用的{@link CopyOptions}
+	 *
+	 * @param config {@link JSONConfig}
+	 * @return {@link CopyOptions}
+	 * @since 5.8.0
+	 */
+	static CopyOptions toCopyOptions(JSONConfig config) {
+		return CopyOptions.create()
+				.setIgnoreCase(config.isIgnoreCase())
+				.setIgnoreError(config.isIgnoreError())
+				.setIgnoreNullValue(config.isIgnoreNullValue())
+				.setTransientSupport(config.isTransientSupport());
+	}
 }

hutool-json/src/main/java/cn/hutool/json/JSONConverter.java

@@ -1,10 +1,12 @@
 package cn.hutool.json;
 
+import cn.hutool.core.bean.BeanUtil;
 import cn.hutool.core.convert.Convert;
 import cn.hutool.core.convert.ConvertException;
 import cn.hutool.core.convert.Converter;
 import cn.hutool.core.convert.ConverterRegistry;
 import cn.hutool.core.convert.impl.ArrayConverter;
+import cn.hutool.core.convert.impl.BeanConverter;
 import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.ReflectUtil;
 import cn.hutool.core.util.StrUtil;
@@ -112,6 +114,16 @@ public class JSONConverter implements Converter<JSON> {
 				//noinspection unchecked
 				return (T) deserializer.deserialize((JSON) value);
 			}
+
+			// issue#2212@Github
+			// 在JSONObject转Bean时，读取JSONObject本身的配置文件
+			if(value instanceof JSONGetter
+					&& targetType instanceof Class && BeanUtil.hasSetter((Class<?>) targetType)){
+				final JSONConfig config = ((JSONGetter<?>) value).getConfig();
+				final Converter<T> converter = new BeanConverter<>(targetType,
+						InternalJSONUtil.toCopyOptions(config).setIgnoreError(ignoreError));
+				return converter.convertWithCheck(value, null, ignoreError);
+			}
 		}
 
 		final T targetValue = Convert.convertWithCheck(targetType, value, null, ignoreError);

hutool-json/src/main/java/cn/hutool/json/JSONObject.java

@@ -2,8 +2,6 @@ package cn.hutool.json;
 
 import cn.hutool.core.bean.BeanPath;
 import cn.hutool.core.bean.BeanUtil;
-import cn.hutool.core.bean.copier.BeanCopier;
-import cn.hutool.core.bean.copier.CopyOptions;
 import cn.hutool.core.collection.CollectionUtil;
 import cn.hutool.core.convert.Convert;
 import cn.hutool.core.lang.Filter;
@@ -537,12 +535,7 @@ public class JSONObject extends MapWrapper<String, Object> implements JSON, JSON
 	 * @param bean Bean对象
 	 */
 	private void populateMap(Object bean) {
-		BeanCopier.create(bean, this,
-				CopyOptions.create()
-						.setIgnoreCase(config.isIgnoreCase())
-						.setIgnoreError(true)
-						.setIgnoreNullValue(config.isIgnoreNullValue())
-		).copy();
+		BeanUtil.beanToMap(bean, this, InternalJSONUtil.toCopyOptions(config));
 	}
 
 	/**

hutool-json/src/main/java/cn/hutool/json/JSONSupport.java

@@ -20,9 +20,9 @@ public class JSONSupport implements JSONString, JSONBeanParser<JSON> {
 	}
 
 	/**
-	 * JSON String转Bean
+	 * JSON转Bean
 	 *
-	 * @param json JSON String
+	 * @param json JSON
 	 */
 	@Override
 	public void parse(JSON json) {

hutool-json/src/test/java/cn/hutool/json/JSONObjectTest.java

@@ -188,10 +188,11 @@ public class JSONObjectTest {
 		JSONObject json = JSONUtil.createObj()//
 				.set("strValue", "null")//
 				.set("intValue", 123)//
+				// 子对象对应"null"字符串，如果忽略错误，跳过，否则抛出转换异常
 				.set("beanValue", "null")//
 				.set("list", JSONUtil.createArray().set("a").set("b"));
 
-		TestBean bean = json.toBean(TestBean.class);
+		TestBean bean = json.toBean(TestBean.class, true);
 		// 当JSON中为字符串"null"时应被当作字符串处理
 		Assert.assertEquals("null", bean.getStrValue());
 		// 当JSON中为字符串"null"时Bean中的字段类型不匹配应在ignoreError模式下忽略注入

hutool-json/src/test/java/cn/hutool/json/TransientTest.java

@@ -12,14 +12,55 @@ public class TransientTest {
 		private String bizNo;
 	}
 
+	@Test
+	public void beanWithoutTransientTest(){
+		Bill detailBill = new Bill();
+		detailBill.setId("3243");
+		detailBill.setBizNo("bizNo");
+
+		//noinspection MismatchedQueryAndUpdateOfCollection
+		final JSONObject jsonObject = new JSONObject(detailBill,
+				JSONConfig.create().setTransientSupport(false));
+		Assert.assertEquals("{\"bizNo\":\"bizNo\",\"id\":\"3243\"}", jsonObject.toString());
+	}
+
 	@Test
 	public void beanWithTransientTest(){
 		Bill detailBill = new Bill();
 		detailBill.setId("3243");
 		detailBill.setBizNo("bizNo");
 
+		//noinspection MismatchedQueryAndUpdateOfCollection
+		final JSONObject jsonObject = new JSONObject(detailBill,
+				JSONConfig.create().setTransientSupport(true));
+		Assert.assertEquals("{\"bizNo\":\"bizNo\"}", jsonObject.toString());
+	}
+
+	@Test
+	public void beanWithoutTransientToBeanTest(){
+		Bill detailBill = new Bill();
+		detailBill.setId("3243");
+		detailBill.setBizNo("bizNo");
+
 		final JSONObject jsonObject = new JSONObject(detailBill,
 				JSONConfig.create().setTransientSupport(false));
-		Assert.assertEquals("{\"bizNo\":\"bizNo\"}", jsonObject.toString());
+
+		final Bill bill = jsonObject.toBean(Bill.class);
+		Assert.assertEquals("3243", bill.getId());
+		Assert.assertEquals("bizNo", bill.getBizNo());
+	}
+
+	@Test
+	public void beanWithTransientToBeanTest(){
+		Bill detailBill = new Bill();
+		detailBill.setId("3243");
+		detailBill.setBizNo("bizNo");
+
+		final JSONObject jsonObject = new JSONObject(detailBill,
+				JSONConfig.create().setTransientSupport(true));
+
+		final Bill bill = jsonObject.toBean(Bill.class);
+		Assert.assertNull(bill.getId());
+		Assert.assertEquals("bizNo", bill.getBizNo());
 	}
 }