https://www.cnblogs.com/ibigboy/p/11124524.html com.alibaba.fastjson.JSONObject时经常会用到它的转换方法,包括Java对象转成JSON串、JSON对象,JSON串转成java对象、JSON对象,JSON对象转换Java对象、JSON串等,使用方法总结如下,持续更新... 1、Java对象-->JSON对象(JSONObject)JSONObject.toJSON(Java对象实例) 1 public class JSON2JavaTest{ 2 public static void main(String[] args) { 3 Student stu = new Student("公众号编程大道", "m", 2); 4 5 //Java对象转化为JSON对象 6 JSONObject jsonObject = (JSONObject) JSONObject.toJSON(stu); 7 System.out.println("Java对象转化为JSON对象\n" + jsonObject);//{"name":"公众号编程大道","age":2,"sex":"m"} 8 9 }10 } 2、Java对象-->JSON字符串JSONObject.toJSONString(Java对象实例) 1 public class JSON2JavaTest{2 public static void main(String[] args) {3 Student stu = new Student("公众号编程大道", "m", 2);4 5 //Java对象转换成JSON字符串6 String stuString = JSONObject.toJSONString(stu);7 System.out.println("Java对象转换成JSON字符串\n" + stuString);//{"age":2,"name":"公众号编程大道","sex":"m"}8 }9 } 3、JSON对象-->JSON字符串JSONObject.toJSONString(); 1 public class JSON2JavaTest{ 2 public static void main(String[] args) { 3 Student stu = new Student("公众号编程大道", "m", 2); 4 5 //先转成JSON对象 6 JSONObject jsonObject = (JSONObject) JSONObject.toJSON(stu); 7 8 //JSON对象转换为JSON字符串 9 String jsonString = jsonObject.toJSONString();10 System.out.println("JSON对象转换为JSON字符串\n" + jsonString);//{"name":"公众号编程大道","age":2,"sex":"m"}11 12 }13 } 4、JSON对象-->Java对象JSONObject.toJavaObject(JSON对象实例, Java对象.class); public class JSON2JavaTest{ public static void main(String[] args) { Student stu = new Student("公众号编程大道", "m", 2); //先转成JSON对象 JSONObject jsonObject = (JSONObject) JSONObject.toJSON(stu); //JSON对象转换成Java对象 Student student = JSONObject.toJavaObject(jsonObject, Student.class); System.out.println("JSON对象转换成Java对象\n" + student);//Student{name='公众号编程大道', sex='m', age=2} } } 5、JSON字符串-->JSON对象JSONObject.parseObject(JSON字符串) 1 public class JSON2JavaTest{ 2 public static void main(String[] args) { 3 String stuString = "{\"age\":2,\"name\":\"公众号编程大道\",\"sex\":\"m\"}"; 4 5 //JSON字符串转换成JSON对象 6 JSONObject jsonObject1 = JSONObject.parseObject(stuString); 7 System.out.println("JSON字符串转换成JSON对象\n" + jsonObject1);//{"sex":"m","name":"公众号编程大道","age":2} 8 } 9 } 6、JSON字符串-->Java对象JSONObject.parseObject(JSON字符串, Java对象.class); 1 public class JSON2JavaTest{2 public static void main(String[] args) {3 String stuString = "{\"age\":2,\"name\":\"公众号编程大道\",\"sex\":\"m\"}";4 5 //JSON字符串转换成Java对象6 Student student1 = JSONObject.parseObject(stuString, Student.class);7 System.out.println("JSON字符串转换成Java对象\n" + student1);//Student{name='公众号编程大道', sex='m', age=2}8 }9 } 常用链接: 解决百度网盘下载慢限速问题(2019亲测可用)Java类是如何默认继承Object的?开发常用Git/Linux/idea命令快捷键总结(持续更新)java 金额数字转换大写算法IntelliJ IDEA代码常用的快捷键(自查)说的再好,不如行动。不怕慢,就怕站。 |
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来自: jasonbetter > 《JAVA》