From cb653427ac15d21bed398283be0c41acefc6f663 Mon Sep 17 00:00:00 2001
From: zlt2000 <zltdiablo@163.com>
Date: Mon, 12 Oct 2020 23:25:40 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=8C=E5=96=84json=E6=96=B9=E6=B3=95?=
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---
 .../com/central/common/utils/JsonUtil.java    | 28 +++++++++++++++----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/zlt-commons/zlt-common-core/src/main/java/com/central/common/utils/JsonUtil.java b/zlt-commons/zlt-common-core/src/main/java/com/central/common/utils/JsonUtil.java
index dce9a24..56da985 100644
--- a/zlt-commons/zlt-common-core/src/main/java/com/central/common/utils/JsonUtil.java
+++ b/zlt-commons/zlt-common-core/src/main/java/com/central/common/utils/JsonUtil.java
@@ -1,6 +1,5 @@
 package com.central.common.utils;
 
-
 import com.central.common.constant.CommonConstant;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
@@ -85,7 +84,7 @@ public class JsonUtil {
     }
 
     /**
-     * 字符串转换为自定义对象
+     * 字符串转换为指定对象
      * @param json json字符串
      * @param cls 目标对象
      */
@@ -101,7 +100,26 @@ public class JsonUtil {
     }
 
     /**
-     * 字符串转换为自定义对象
+     * 字符串转换为指定对象，并增加泛型转义
+     * 例如：List<Integer> test = toObject(jsonStr, List.class, Integer.class);
+     * @param json json字符串
+     * @param parametrized 目标对象
+     * @param parameterClasses 泛型对象
+     */
+    public static <T> T toObject(String json, Class<?> parametrized, Class<?>... parameterClasses) {
+        if(StringUtils.isBlank(json) || parametrized == null){
+            return null;
+        }
+        try {
+            JavaType javaType = MAPPER.getTypeFactory().constructParametricType(parametrized, parameterClasses);
+            return MAPPER.readValue(json, javaType);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * 字符串转换为指定对象
      * @param json json字符串
      * @param typeReference 目标对象类型
      */
@@ -146,7 +164,7 @@ public class JsonUtil {
     }
 
     /**
-     * 字符串转换为list对象
+     * json字符串转换为list对象
      * @param json json字符串
      */
     public static <T> List<T> toList(String json) {
@@ -161,7 +179,7 @@ public class JsonUtil {
     }
 
     /**
-     * json字符串转换为list
+     * json字符串转换为list对象，并指定元素类型
      * @param json json字符串
      * @param cls list的元素类型
      */
-- 
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