1、首先创建测试代码实体类，用于解析json数据之后存放数据的实体类，年级Grade类private String course;//课程字段private String score;//分数字段
2、再创建一个学生实体类，Student类private String name;//学生名字private int age;//年纪private String sex;//性别private Grade grade;//年级
3、创建TestGson测试类，添加一个main方法，作为测试入口
4、首先解析单条无嵌套Json数据的String jsonStr = "{'name':'Tom', 'age':30, 'sex':'male'}";Gson gson = new Gson();Student student = gson.fromJson(jsonStr, Student.class);System.out.println(student);运行查看结果
5、//解析单条有嵌套的Json数据String jsonStr1 = "{'name':'T泠贾高框om', 'age':30, 'sex':'male', 'grade':{'course':'java','score':'100'}}";Gson gson1 = new Gson();Student student1 = gson1.fromJson(jsonStr1, Student.class);System.out.println(student1);
6、//解析Json数组String jsonStr2 = "[{'name':'To罪焐芡拂m', 'age':30, 'sex':'male', 'grade':{'course':'java','score':'100'}}," + "{'name':'Lili', 'age':25, 'sex':'female', 'grade':{'course':'java','score':'100'}}]";Gson gson2 = new Gson();List<Student> students = gson2.fromJson(jsonStr2, new TypeToken<List<Student>>(){}.getType());System.out.println(students);
