java生成多格式json数据代码

梦里梦外; 2022-04-24 10:02 225阅读 0赞

java生成多格式json数据代码

1. 生成JSON数据：{"name":"zhagnsan","age":24}
      2. 生成JSON数据：[{"name":"zhangsan","age":24},{"name":"lisi","age":25},{"name":"wangwu","age":26}]
      3. 生成JSON数据： {"children1":[{"name":"zhangsan1","age":31},{"name":"lisi1","age":51},{"name":"wangwu1","age":21}],"children":[{"name":"zhangsan","age":30},{"name":"lisi","age":50},{"name":"wangwu","age":20}],"name":"java","id":1}

完整项目打包下载  
[https://download.csdn.net/download/qq\_32442967/11212423][https_download.csdn.net_download_qq_32442967_11212423]

--------------------

**格式1. 生成JSON数据：**

createJsonc.java

package com.foryh.test;
    
    import org.json.JSONException;
    import org.json.JSONObject;
    
    public class createJsonc { 
        public static void main(String[] args) { 
    
            JSONObject object = new JSONObject();
    
            //生成JSON数据：{"name":"zhagnsan","age":24}
    
            try { 
                object.put("name", "zhagnsan");
                object.put("age", 24);
    
                System.out.println(object);
            } catch (JSONException e) { 
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
    
        }
    }

**json样式：**

{ 
      "name": "zhagnsan",
      "age": 24
    }

--------------------

**格式2. 生成JSON数据：**  
Person.java

package com.foryh.test;
    
    public class Person { 
        private int age;
        private String name;
    
        public Person(int age,String name){ 
            super();
            this.age=age;
            this.name=name;
    
        }
        public Person(){ 
            super();
        }
    
        public int getAge() { 
            return age;
        }
    
        public void setAge(int age) { 
            this.age = age;
        }
    
        public String getName() { 
            return name;
        }
    
        public void setName(String name) { 
            this.name = name;
        }
    
        @Override
        public String toString() { 
            return "Person{" +
                    "age=" + age +
                    ", name='" + name + '\'' +
                    '}';
        }
    }

createJson2.java

package com.foryh.test;
    
    import org.json.JSONArray;
    import org.json.JSONException;
    import org.json.JSONObject;
    
    import java.util.ArrayList;
    import java.util.List;
    
    /** * 2.生成JSON数据： * [{"name":"zhangsan","age":24},{"name":"lisi","age":25},{"name":"wangwu","age":26}] */
    public class createJson2 { 
        public static void main(String[] args) { 
    
            List<Person> list = new ArrayList<>();
            list.add(new Person(24, "zhangsan"));
            list.add(new Person(25, "lisi"));
            list.add(new Person(26, "wangwu"));
    
            JSONArray array = new JSONArray();
            for (int i = 0; i < list.size(); i++) { 
                JSONObject object = new JSONObject();
    
                try { 
                    object.put("name", list.get(i).getName());
                    object.put("age", list.get(i).getAge());
                    array.put(object);
                } catch (JSONException e) { 
                    e.printStackTrace();
                }
            }
            System.out.println(array);
    
    
        }
    }

**json样式：**

[
      { 
        "name": "zhangsan",
        "age": 24
      },
      { 
        "name": "lisi",
        "age": 25
      },
      { 
        "name": "wangwu",
        "age": 26
      }
    ]

--------------------

**格式3. 生成JSON数据：**

Person.java

createJson3.java

package com.foryh.test;
    
    import org.json.JSONException;
    import org.json.JSONObject;
    
    import java.util.ArrayList;
    import java.util.List;
    
    /** * //生成JSON数据： * {"children1":[{"name":"zhangsan1","age":31},{"name":"lisi1","age":51},{"name":"wangwu1","age":21}],"children":[{"name":"zhangsan","age":30},{"name":"lisi","age":50},{"name":"wangwu","age":20}],"name":"java","id":1} */
    
    public class createJson3 { 
        public static void main(String[] args) { 
    
            JSONObject object = new JSONObject();
            try { 
    
                object.put("id", 1);
                object.put("name", "java");
    
                List<Person> persons = new ArrayList<>();
                persons.add(new Person(30, "zhangsan"));
                persons.add(new Person(50, "lisi"));
                persons.add(new Person(20, "wangwu"));
    
                List<Person> persons1 = new ArrayList<>();
                persons1.add(new Person(31, "zhangsan1"));
                persons1.add(new Person(51, "lisi1"));
                persons1.add(new Person(21, "wangwu1"));
    
                object.put("children", persons);
                object.put("children1", persons1);
    
    
                System.out.println(object);
    
            } catch (JSONException e) { 
                e.printStackTrace();
            }
    
        }
    }

**json样式：**

{ 
      "children1": [
        { 
          "name": "zhangsan1",
          "age": 31
        },
        { 
          "name": "lisi1",
          "age": 51
        },
        { 
          "name": "wangwu1",
          "age": 21
        }
      ],
      "children": [
        { 
          "name": "zhangsan",
          "age": 30
        },
        { 
          "name": "lisi",
          "age": 50
        },
        { 
          "name": "wangwu",
          "age": 20
        }
      ],
      "name": "java",
      "id": 1
    }

--------------------

完整项目打包下载  
[https://download.csdn.net/download/qq\_32442967/11212423][https_download.csdn.net_download_qq_32442967_11212423]

--------------------

[https_download.csdn.net_download_qq_32442967_11212423]: https://download.csdn.net/download/qq_32442967/11212423