个回答

• qq_这是只仓鼠_0

  2017-04-21 19:00:06

  已采纳

  因为你的Bean里只有set方法没有get方法 导致无法获取Bean对象中的属性，所以是光一个{}，Bean里全部都自动生存下get方法就好.

  0

• jyau

  2017-04-19 23:18:59

  输出结果是：{}

  0

• jyau

  2017-04-19 23:18:24

  import org.json.JSONObject;

  
  

  public class JSONObjectSample {

  
  

  public static void main(String[] args) {

  createJsonByJavaBean();

  }

  
  

  private static void createJsonByJavaBean() {

  PersonInfo info = new PersonInfo();

  info.setName("John");

  info.setSex("male");

  info.setAge(22);

  info.setStudent(true);

  info.setHobbies(new String[] {"hiking", "swimming"});

  JSONObject obj = new JSONObject(info);

  System.out.println(obj);

  }

  class PersonInfo {

  
  

  private String name;

  private String sex;

  private int age;

  private boolean isStudent;

  private String[] hobbies;

  public void setName(String name) {

  this.name = name;

  }

  public void setSex(String sex) {

  this.sex = sex;

  }

  public void setAge(int age) {

  this.age = age;

  }

  public void setStudent(boolean isStudent) {

  this.isStudent = isStudent;

  }

  public void setHobbies(String[] hobbies) {

  this.hobbies = hobbies;

  }

  }

  }

  
  

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