package com.common.core.utils;
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import com.common.core.exception.BizException;
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import com.google.gson.Gson;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.text.StringEscapeUtils;
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/**
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* @Author: 廖振钦
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* @description: gonsutils
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* @date 2022-01-06:10:45
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* */
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@Slf4j
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public class GsonUtils {
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public static Gson g = new Gson();
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public static <T> T fromJson(String json, Class<? extends T> t, int layer){
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if(layer < 5) {
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try {
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if(layer == 0){
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return g.fromJson(json, t);
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}else if (layer == 1){
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String tmp_json = StringEscapeUtils.unescapeJson(StringEscapeUtils.unescapeHtml4(json));
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return g.fromJson(tmp_json, t);
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}else if (layer == 2){
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String tmp_json = StringEscapeUtils.unescapeJson(StringEscapeUtils.unescapeHtml4(json));
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String overjson = toJsonString(tmp_json);
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return g.fromJson(overjson, t);
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}else if (layer == 3){
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String overjson=json.replaceAll("\"}\",", "\"/}\",");
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return g.fromJson(overjson, t);
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}else{
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String overjson = toJsonString(json);
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return g.fromJson(overjson, t);
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}
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} catch (Exception e) {
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return fromJson(json, t, layer + 1);
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}
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}else{
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log.error("GSON解析异常:"+json);
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throw new BizException("JSON解析异常");
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}
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}
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private static String toJsonString(String s) {
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char[] tempArr = s.toCharArray();
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int tempLength = tempArr.length;
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for (int i = 0; i < tempLength; i++) {
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if (tempArr[i] == ':' && tempArr[i + 1] == '"') {
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for (int j = i + 2; j < tempLength; j++) {
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if (tempArr[j] == '"') {
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if (tempArr[j + 1] != ',' && tempArr[j + 1] != '}') {
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tempArr[j] = '”'; // 将value中的 双引号替换为中文双引号
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} else if (tempArr[j + 1] == ',' || tempArr[j + 1] == '}') {
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break;
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}
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}
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}
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}
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}
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return new String(tempArr);
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}
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public static String toJson(Object o){
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return g.toJson(g);
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}
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}
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