Java基本数据转换成Json代码

    JSON是一种轻量级的数据交换格式，非常适合于服务器与 JavaScript 的交互。是移动开发中数据客户端和服务器端数据交互的不二选择;  尤其是现在HTML5的流行,更显着使用Json 完成数据交互的重要性.  

    在这里, 我将演示一下Java基本数据转换为Json代码

Json必需包

1. json-lib-2.3-jdk15.jar
2. commons-lang-2.4.jar
3. commons-logging-1.0.4.jar
4. ezmorph-1.0.6.jar
5. commons-collections-3.2.1.jar
6. commons-beanutils-1.8.0.jar

如果不想自己下载jar 可以使用这个demo

1.List集合转换成json代码

        List<Person> list = new ArrayList<Person>();

        list.add(new Person(0,"nagi_ho", 20,"海淀"));
        list.add(new Person(1, "eson_ho", 21,"朝阳"));


         JSONArray jsonList = JSONArray.fromObject(list);
         System.out.println("1.List集合转换成json代码====>" + jsonList.toString());

2.Map集合转换成json代码

         Map map = new HashMap();

         map.put("name", "json");
         map.put("bool", Boolean.TRUE);
         map.put("int", new Integer(1));
         map.put("arr", new String[] { "btbu", "b" });
         map.put("func", "function(i){ return this.arr; }");

         JSONObject jsonMap = JSONObject.fromObject(map);
         System.out.println("2.Map集合转换成json代码====>"+jsonMap.toString());

3.Set集合转换成json代码

         Set<Person> set = new HashSet<Person>();
         set.add(new Person(0, "nagi_ho", 20,"信管112"));
         set.add(new Person(1, "eson_ho", 22,"电商112"));
         JSONArray jsonArray4 = JSONArray.fromObject(set);
         System.out.println("3.Set集合转换成json代码====>"  +jsonArray4.toString());

4.Bean转换成json代码

         JSONObject jsonObject = JSONObject.fromObject(new Person(1, "信管112", 22,"btbu"));
         System.out.println("4.Bean转换成json代码====>"+jsonMap.toString());

5.数组转换成json代码

         boolean[] boolArray = new boolean[] { true, false, true };
         String[] stringArray = new String[] {"信管111","信管112", "电商111", "电商112"};
         JSONArray boolArray1 = JSONArray.fromObject(boolArray);
         JSONArray jsonArray2 = JSONArray.fromObject(stringArray);
         System.out.println("5.数组转换成json代码====>"+boolArray1.toString());
         System.out.println("5.数组转换成json代码====>"+jsonArray2.toString());

6.一般数据转换成json代码

         JSONArray jsonArray3 = JSONArray.fromObject("[‘json‘,‘is‘,‘easy‘]" );
         System.out.println("6.一般数据转换成json代码====>"+jsonArray3.toString());

运行结果:

1.List集合转换成json代码====>[{"address":"海淀","age":20,"id":0,"name":"nagi_ho"},{"address":"朝阳","age":21,"id":1,"name":"eson_ho"}]
2.Map集合转换成json代码====>{"arr":["btbu","b"],"int":1,"name":"json","func":function(i){ return this.arr; },"bool":true}
3.Set集合转换成json代码====>[{"address":"电商112","age":22,"id":1,"name":"eson_ho"},{"address":"信管112","age":20,"id":0,"name":"nagi_ho"}]
4.Bean转换成json代码====>{"arr":["btbu","b"],"int":1,"name":"json","func":function(i){ return this.arr; },"bool":true}
5.数组转换成json代码====>[true,false,true]
5.数组转换成json代码====>["信管111","信管112","电商111","电商112"]
6.一般数据转换成json代码====>["json","is","easy"]

当然我相信大家对这个json 格式不满意, 那么我们使用json的格式化工具Hison( 点击下载)

[
    {
        "address":"北京",
        "age":20,
        "id":0,
        "name":"nagi"
    },
    {
        "address":"北京",
        "age":21,
        "id":1,
        "name":"nag1"
    },
    {
        "address":"北京",
        "age":22,
        "id":2,
        "name":"nag2"
    },
    {
        "address":"北京",
        "age":23,
        "id":3,
        "name":"nag3"
    },
    {
        "address":"北京",
        "age":24,
        "id":4,
        "name":"nag4"
    }
]

这样是不是看起来很爽了, 试一试吧,

如果觉得对你有用 给个赞吧~

Demo完整源码下载