package com.inspur.demo.json;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Calendar;

import java.util.Date;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import net.sf.ezmorph.object.DateMorpher;

import net.sf.json.JSON;

import net.sf.json.JSONArray;

import net.sf.json.JSONObject;

import net.sf.json.JSONSerializer;

import net.sf.json.JsonConfig;

import net.sf.json.processors.JsonValueProcessor;

import net.sf.json.util.CycleDetectionStrategy;

import net.sf.json.util.JSONUtils;

import net.sf.json.util.PropertyFilter;

/**

 * JSON-lib操作JSON数据

 */

public class JsonLibCase {

    /**

     * 序列化

     */

    public static String serialize() {

        MyBean bean = new MyBean();

        bean.setS("测试字符串");

        Calendar calendar = Calendar.getInstance();

        calendar.add(Calendar.HOUR_OF_DAY, -1);

        bean.setD(calendar.getTime());

        JsonConfig config = new JsonConfig();

        //防止自包含

        config.setCycleDetectionStrategy(CycleDetectionStrategy.LENIENT);

        //Date类型转化

        config.registerJsonValueProcessor(Date.class, new DateJsonValueProcessor());

        //过滤s3字段

        config.setExcludes(new String[]{"s3"});

        //过滤值为null的字段

        config.setJsonPropertyFilter(new PropertyFilter() {

            @Override

            public boolean apply(Object arg0, String arg1, Object value) {

                return value == null;

            }

        });

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

        list.add(bean);

        Map<String, List<MyBean>> map = new HashMap<String, List<MyBean>>();

        map.put("data", list);

        JSON json = JSONSerializer.toJSON(map, config);

        String result = json.toString();

        System.out.println(json.toString());

        return result;

    }

    /**

     * 反序列化

     */

    public static void deserialize() {

        try {

            //处理日期类型

            JSONUtils.getMorpherRegistry().registerMorpher(new DateMorpher(new String[]{"yyyy-MM-dd HH:mm:ss"}));

            String s = serialize();

            Map<String, Class<?>> classMap = new HashMap<String, Class<?>>();

            classMap.put("data", MyBean.class);

            Map<String, List<MyBean>> map = (Map<String, List<MyBean>>) JSONObject.toBean(JSONObject.fromObject(s), Map.class, classMap);

            System.out.println(map);

            //直接通过api获取相应数据

            JSONObject obj = JSONObject.fromObject(s);

            JSONArray data = obj.getJSONArray("data");

            JSONObject bean = data.getJSONObject(0);

            System.out.println(bean.getString("s"));

            //...

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

    public static void main(String[] args) {

        serialize();

        deserialize();

    }

    static class DateJsonValueProcessor implements JsonValueProcessor {

        @Override

        public Object processArrayValue(Object value, JsonConfig arg1) {

            return process(value);

        }

        @Override

        public Object processObjectValue(String key, Object value, JsonConfig arg2) {

            return process(value);

        }

        private Object process(Object value) {

            try {

                if (value instanceof Date) {

                    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

                    return sdf.format((Date) value);

                }

            } catch (Exception e) {

                e.printStackTrace();

            }

            return value == null ? "" : value.toString();

        }

    }

}

package com.inspur.demo.json;

import java.util.Arrays;

import java.util.Date;

public class MyBean {

    private String s = "字符串";

    private String s2;

    private String s3 = "字符串3";

    private int i = 123;

    private Integer i2;

    private char c = '到';

    private char[] c2 = new char[]{'a', 'b'};

    private Date d = new Date();

    private Date[] d2 = new Date[]{new Date(), new Date()};

    public String getS() {

        return s;

    }

    public void setS(String s) {

        this.s = s;

    }

    public String getS2() {

        return s2;

    }

    public void setS2(String s2) {

        this.s2 = s2;

    }

    public String getS3() {

        return s3;

    }

    public void setS3(String s3) {

        this.s3 = s3;

    }

    public int getI() {

        return i;

    }

    public void setI(int i) {

        this.i = i;

    }

    public Integer getI2() {

        return i2;

    }

    public void setI2(Integer i2) {

        this.i2 = i2;

    }

    public char getC() {

        return c;

    }

    public void setC(char c) {

        this.c = c;

    }

    public char[] getC2() {

        return c2;

    }

    public void setC2(char[] c2) {

        this.c2 = c2;

    }

    public Date getD() {

        return d;

    }

    public void setD(Date d) {

        this.d = d;

    }

    public Date[] getD2() {

        return d2;

    }

    public void setD2(Date[] d2) {

        this.d2 = d2;

    }

    @Override

    public String toString() {

        return "MyBean [s=" + s + ", s2=" + s2 + ", s3=" + s3 + ", i=" + i + ", i2=" + i2 + ", c=" + c + ", c2="

                + Arrays.toString(c2) + ", d=" + d + ", d2=" + Arrays.toString(d2) + "]";

    }

}