使用fastJson 来解析 json

FastJson 是阿里巴巴出的，据说是速度最快的。

java类

package com.android.domain;

public class Person {

    private String name;
    private int age;
    private String address;

    public String getName() {
        return name;
    }

    public Person(String name, int age, String address) {
        super();
        this.name = name;
        this.age = age;
        this.address = address;
    }

    @Override
    public String toString() {
        return "Person [name=" + name + ", age=" + age + ", address=" + address
                + "]";
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public Person() {
        // TODO Auto-generated constructor stub
    }

}

执行类：

package com.android.myfastjson;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.alibaba.fastjson.asm.Type;
import com.alibaba.fastjson.util.TypeUtils;

public class FastJsonTools {

    public FastJsonTools() {
        // TODO Auto-generated constructor stub
    }

    public static String createJsonString(Object object) {
        String jsonString = JSON.toJSONString(object);
        return jsonString;
    }

    public static <T> T createJsonBean(String jsonString, Class<T> cls) {
        T t = JSON.parseObject(jsonString, cls);
        return t;
    }

    public static <T> List<T> createJsonToListBean(String jsonString,
            Class<T> cls) {
        List<T> list = null;
        list = JSON.parseArray(jsonString, cls);
        return list;
    }

    /**
     * @param jsonString
     * @return
     */
    public static List<Map<String, Object>> createJsonToListMap(
            String jsonString) {
        List<Map<String, Object>> list2 = JSON.parseObject(jsonString,
                new TypeReference<List<Map<String, Object>>>() {
                });
        return list2;
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        // Person person1 = new Person("张三1", 24, "北京1");
        // Person person2 = new Person("张三2", 23, "北京2");
        // List<Person> list = new ArrayList<Person>();
        // list.add(person1);
        // list.add(person2);
        List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("name", "jack");
        map.put("age", 23);
        Map<String, Object> map2 = new HashMap<String, Object>();
        map2.put("name", "rose");
        map2.put("age", 24);
        list.add(map);
        list.add(map2);

        String jsonString = JSON.toJSONString(list);
        System.out.println(jsonString);
        // JSON.parseArray(arg0, arg1)
        List<Map<String, Object>> list2 = JSON.parseObject(jsonString,
                new TypeReference<List<Map<String, Object>>>() {
                });
        // List<Person> lists = JSON.parseArray(arg0, arg1);
        System.out.println(list2.toString());

    }

}

输出：

[{"age":23,"name":"jack"},{"age":24,"name":"rose"}]

[{name=jack, age=23}, {name=rose, age=24}]