Gson---json high performance conversion

1. Basic data type analysis and generation

   Gson.tojson ();

   Gson.fromjson ();

2. Analysis and generation of java data types

    Gson.tojson("jsonStr",xxx.class);

    Gson.fromjson("jsonStr",xxx.class);

3. The use of generics in Gson <T>

  a:list generic

       gson.fromJson(jsonStr,new TypeToken<Map<List<T>, String>>() {}.getType()); //fromJson

  b: Array generic

      Gson.fromjson("jsonStr",string[].class);