Fastjson 解析字符串

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;

import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * Created by fuguowen on 2018/11/21 19:33
 */
public class test01 {
	public static void main(String[] args) {
//		把字符串转化为map
		String  str = "{\"studentName\":\"lily\",\"student\":12}";
		Map<String,Object> map  =JSON.parseObject(str);
		System.out.println(map);
//		把字符串转化为list
		String  str2 = "[{\"name\":\"lily\",\"age\":12},{\"name\":\"lucy\",\"age\":15}]";
		List list=JSON.parseArray(str2);
		System.out.println(list);

		String  str3= "{\"teacherName\":\"crystall\",\"teacherAge\":27,\"course\":{\"courseName\":\"english\",\"code\":1270},\"students\":[{\"studentName\":\"lily\",\"studentAge\":12},{\"studentName\":\"lucy\",\"studentAge\":15}]}";
		Map<String,Object> map2= JSON.parseObject(str3);
		System.out.println(map2);
		Integer teacherAge = (Integer) map2.get("teacherAge");
		System.out.println(teacherAge);
		Map<String,Object> courseMap = (Map<String,Object>)map2.get("course");
		System.out.println(courseMap);
		List<Map<String,Object>> students = (List<Map<String,Object>>)map2.get("students");
		System.out.println(students);
		for (Map<String, Object> student : students) {
			Set<Map.Entry<String, Object>> entries = student.entrySet();
			for (Map.Entry<String, Object> entry : entries) {
				System.out.println(entry.getKey()+"===="+entry.getValue());
			}
		}

		Student student = JSON.parseObject(str, new TypeReference<Student>() {});
		System.out.println(student);



	}

}