##JAVA JSONArray出色雪糕/p Student 实体类
//*
@author奋斗的纸飞机/p @version 1.0
@date 2021/2/18
公共类事件{
私有字符串名称； //名称
私有集成器Age； //年龄
私有字符串生成器； //性别
公共student (字符串名称，Integer age，字符串生成器)。
this.name=name；
this.age=age；
this.gender=gender；
}
公共字符串getname
返回名称；
}
公共语音集名称(字符串名称) {
this.name=name；
}
公共integer get age
返回age；
}
公共语音设置(integer age ) {
this.age=age；
}
公共字符串get gender
返回引擎；
}
publicvoidsetgender (字符串生成器)。
this.gender=gender；
}
@Override
公共字符串字符串
return“student {”‘}；
}
}
具体实现方法
import com.Alibaba.fast JSON.JSON；
import com.Alibaba.fast JSON.JSON array；
import com.Alibaba.fast JSON.JSON object；
import java.util.*；
//*
@author奋斗的纸飞机/p @version 1.0
@date 2021/2/18
publicclassjsonarraytoarraylist {
publicstaticvoidmain (字符串颜色导师args )。
列表事件列表=new ArrayList (；
MapString，Object JohnMap=new HashMapString，Object (； Johnmap.put('name，'幽默的未来)； Jhnmap.put('age '，16 )； Johnmap.put('gender '，' boy ' )； jsonobjectjsdbmnewjsonobject (John map； MapString，Object LilyMap=new HashMapString，Object (； Lilymap.put('name '，' lily ' )； lilymap.put('age '，17 )； lilymap.put('gender '，' girl ' )； bzdxh=newJSONobject(Lilymap )； MapString，Object JackMap=new HashMapString，Object (； jkmap.put('name '，' hpdxhd )； jkmap.put('age '，18 )； jkmap.put('gender '，' boy ' )； jonobjectjack=newjsonobject (jackmap )； sudentjsonarray.add(John； sudentjsonarray.add(lily； sudentjsonarray.add(jack； system.out.println ('n======studentjsonarrayinfo===' )； system.out.println (studentjsonarray； system.out.println ('n===jsonarraytoarraylist (方式1 )===' )； student list=studentjsonarray.tojavalist (stu
dent.class); studentList.forEach(student -> System.out.println("stundet info: " + student)); System.out.println("n==== JSONArray to ArrayList(方式 2) ======"); studentList = JSON.parseArray(studentJSONArray.toJSONString(), Student.class); studentList.forEach(student -> System.out.println("stundet info: " + student)); System.out.println("n=== JSONArray to ArrayList(方式 3) ======="); studentList = JSONObject.parseArray(studentJSONArray.toJSONString(), Student.class); studentList.forEach(student -> System.out.println("stundet info: " + student)); System.out.println("n=== JSONArray to ArrayList(方式 4) ======"); studentList = JSONArray.parseArray(studentJSONArray.toJSONString(), Student.class); studentList.forEach(student -> System.out.println("stundet info: " + student)); System.out.println("n==== JSONArray to ArrayList(方式 5) ======="); final ArrayList<Student> tmpList = new ArrayList<Student>(); studentJSONArray.forEach(studentJson -> { JSONObject jsonObject = (JSONObject)studentJson; Student student = new Student(jsonObject.getString("name"), jsonObject.getInteger("age"), jsonObject.getString("gender")); tmpList.add(student); }); studentList = tmpList; studentList.forEach(student -> System.out.println("stundet info: " + student)); System.out.println("n==== JSONArray to ArrayList(方式 6) ======"); studentList.clear(); for (Object object : studentJSONArray) { JSONObject jsonObject = (JSONObject)object; Student student = new Student(jsonObject.getString("name"), jsonObject.getInteger("age"), jsonObject.getString("gender")); studentList.add(student); } studentList.forEach(student -> System.out.println("stundet info: " + student)); System.out.println("n====== JSONArray to ArrayList(方式 7) ========"); studentList.clear(); for (int i = 0; i < studentJSONArray.size(); i++) { JSONObject jsonObject = (JSONObject)studentJSONArray.get(i); Student student = new Student(jsonObject.getString("name"), jsonObject.getInteger("age"), jsonObject.getString("gender")); studentList.add(student); } studentList.forEach(student -> System.out.println("stundet info: " + student));}
}
[{“gender”:“boy”,“name”:“zzdhl,“age”:16},{“gender”:“girl”,“name”:眼睛大的玉米,“age”:17},{“gender”:“boy”,“name”:dgb,“age”:18}]
======= JSONArray to ArrayList(方式 1) ============
stundet info: Student{name=‘John’, age=16, gender=‘boy’}
stundet info: Student{name=‘Lily’, age=17, gender=‘girl’}
stundet info: Student{name=‘Jack’, age=18, gender=‘boy’}
====== JSONArray to ArrayList(方式 2) ============
stundet info: Student{name=‘John’, age=16, gender=‘boy’}
stundet info: Student{name=‘Lily’, age=17, gender=‘girl’}
stundet info: Student{name=‘Jack’, age=18, gender=‘boy’}
======== JSONArray to ArrayList(方式 3) ==========
stundet info: Student{name=‘John’, age=16, gender=‘boy’}
stundet info: Student{name=‘Lily’, age=17, gender=‘girl’}
stundet info: Student{name=‘Jack’, age=18, gender=‘boy’}
========= JSONArray to ArrayList(方式 4) ========
stundet info: Student{name=‘John’, age=16, gender=‘boy’}
stundet info: Student{name=‘Lily’, age=17, gender=‘girl’}
stundet info: Student{name=‘Jack’, age=18, gender=‘boy’}
=========== JSONArray to ArrayList(方式 5) ==========
stundet info: Student{name=‘John’, age=16, gender=‘boy’}
stundet info: Student{name=‘Lily’, age=17, gender=‘girl’}
stundet info: Student{name=‘Jack’, age=18, gender=‘boy’}
========== JSONArray to ArrayList(方式 6) ============
stundet info: Student{name=‘John’, age=16, gender=‘boy’}
stundet info: Student{name=‘Lily’, age=17, gender=‘girl’}
stundet info: Student{name=‘Jack’, age=18, gender=‘boy’}
========== JSONArray to ArrayList(方式 7) ==========
stundet info: Student{name=‘John’, age=16, gender=‘boy’}
stundet info: Student{name=‘Lily’, age=17, gender=‘girl’}
stundet info: Student{name=‘Jack’, age=18, gender=‘boy’}