[bug-4663] 删除题库，操作日志解析JSON失败

ibps-provider-root/modules/provider-business/src/main/java/com/lc/ibps/untils/JsonUtils.java

@@ -11,6 +11,11 @@ public class JsonUtils {
     private static final Pattern NESTED_JSON_PATTERN =
             Pattern.compile("\"(\\w+)\":\"(\\{.*?\\})\"");
 
+    /**
+     * 处理json字符串包含json对象
+     * @param jsonStr
+     * @return
+     */
     public static String fixNestedJson(String jsonStr) {
         // 处理嵌套JSON结构
         Matcher matcher = NESTED_JSON_PATTERN.matcher(jsonStr);