package com.alibaba.json.bvt.parser.fieldTypeResolver; import java.lang.reflect.Type; import org.junit.Assert; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject; import com.alibaba.fastjson.parser.deserializer.FieldTypeResolver; import junit.framework.TestCase; public class FieldTypeResolverTest extends TestCase { public void test_0() throws Exception { String text = "{\"item_0\":{},\"item_1\":{}}"; FieldTypeResolver fieldResolver = new FieldTypeResolver() { public Type resolve(Object object, String fieldName) { if (fieldName.startsWith("item_")) { return Item.class; } return null; } }; JSONObject jsonObject = JSON.parseObject(text, JSONObject.class, fieldResolver); Assert.assertTrue(jsonObject.get("item_0") instanceof Item); } public static class Item { } }