网络通讯数据.传输json（java<==>C#）

ZC：主要是测试解决 时间转成JSON不一样的问题

ZC：java中转换时间格式的关键是“JSONUtils.getMorpherRegistry().registerMorpher(new DateMorpher(new String[]{ strDatetimeFormat }));”

ZC：C#中转换时间格式的关键是“IsoDateTimeConverter timeConverter = new IsoDateTimeConverter();　　timeConverter.DateTimeFormat = "yyyy-MM-dd HH:mm:ss.fff";”

1、java

　导入 第三方：

　　

　1.1、TestJson.java

package shh.Main;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.Date;

import net.sf.ezmorph.object.DateMorpher;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;
import net.sf.json.util.JSONUtils;
import shh.GlobalParam.GlobalParam;
import shh.entity.communicate.JsonDateValueProcessor;
import shh.entity.db.RealTimeCoalFlowWidth;

// java中json的使用和解析 - Java_Panda - 博客园.html “https://www.cnblogs.com/LearnAndGet/p/10009646.html”
// JSON数据转换之net.sf.json包的使用 - 娜娜娜娜小姐姐 - 博客园.html “https://www.cnblogs.com/nananana/p/9263708.html”

public class TestJson
{
    public static void main(String[] args) throws Exception
    {
        String strDatetimeFormat = "yyyy-MM-dd HH:mm:ss.SSS";
        // ZC: 用于 java object --> json
        JsonConfig jsonConfig = new JsonConfig();
        jsonConfig.registerJsonValueProcessor(Date.class, new JsonDateValueProcessor(strDatetimeFormat));
        
　　　　　// ZC: 测试下来 下面你的这个是关键!! 上面的 jsonConfig 用不用都无所谓...
        // ZC: 用于 json --> java object
        JSONUtils.getMorpherRegistry().registerMorpher(new DateMorpher(new String[]{ strDatetimeFormat }));

    // ***

        System.out.println("");

        long l01 = System.currentTimeMillis();
        java.util.Date pp = new Timestamp(l01);
        System.out.println("pp : " + pp);

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

        RealTimeCoalFlowWidth cfw = new RealTimeCoalFlowWidth();
        cfw.setCameraID(1);
        cfw.setCoalFlowDateTime(new Timestamp(l01));
        cfw.setCoalFlowWidth((short)3);
        cfw.setCoalFlowSectionArea((short)4);
        cfw.setCoalFlowVelocity((short)5);

        RealTimeCoalFlowWidth cfw1 = new RealTimeCoalFlowWidth();
        cfw1.setCameraID(2);
        cfw1.setCoalFlowDateTime(new Timestamp(l01-100));
        cfw1.setCoalFlowWidth((short)30);
        cfw1.setCoalFlowSectionArea((short)40);
        cfw1.setCoalFlowVelocity((short)50);

        RealTimeCoalFlowWidth[] cfws = {cfw, cfw1};
        JSONArray jarr = JSONArray.fromObject(cfws, jsonConfig);
        System.out.println(jarr);

    // ***

        JSONArray jarr1 = JSONArray.fromObject(jarr.toString());

        RealTimeCoalFlowWidth[] ttt = (RealTimeCoalFlowWidth[])JSONArray.toArray(jarr1, RealTimeCoalFlowWidth.class);
        System.out.println("ttt.length ：" + ttt.length);
        for (int i=0; i<ttt.length; i++)
        {
            RealTimeCoalFlowWidth t = ttt[i];
            System.out.println("["+i+"] ：" + t.getCameraID()+", "+sdf.format(t.getCoalFlowDateTime())+", "
                    +t.getCoalFlowWidth()+", "+t.getCoalFlowSectionArea()+", "+t.getCoalFlowVelocity());
//            System.out.println("["+i+"] ：" + t.getCameraID()+", "+(t.getCoalFlowDateTime())+", "
//                    +t.getCoalFlowWidth()+", "+t.getCoalFlowSectionArea()+", "+t.getCoalFlowVelocity());
        }

        //Json_CoalFlowWidth();
    }

    // 分析结果数据(DB:煤流宽度表)
    public static void Json_CoalFlowWidth() throws IOException
    {
        System.out.println("");

        long l01 = System.currentTimeMillis();
        java.util.Date pp = new Timestamp(l01);
        System.out.println("pp : " + pp);

        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
        System.out.println("sdf.format(pp) : " + sdf.format(pp));
        System.out.println("sdf.format(pp) : " + sdf.format(new Timestamp(l01-100)));

        RealTimeCoalFlowWidth cfw = new RealTimeCoalFlowWidth();
        cfw.setCameraID(1);
        cfw.setCoalFlowDateTime(new Timestamp(l01));
        cfw.setCoalFlowWidth((short)3);
        cfw.setCoalFlowSectionArea((short)4);
        cfw.setCoalFlowVelocity((short)5);

        RealTimeCoalFlowWidth cfw1 = new RealTimeCoalFlowWidth();
        cfw1.setCameraID(2);
        cfw1.setCoalFlowDateTime(new Timestamp(l01-100));
        cfw1.setCoalFlowWidth((short)30);
        cfw1.setCoalFlowSectionArea((short)40);
        cfw1.setCoalFlowVelocity((short)50);

        GlobalParam.JsonConfig1.setRootClass(RealTimeCoalFlowWidth.class);

        RealTimeCoalFlowWidth[] cfws = {cfw, cfw1};
        JSONArray jarr = JSONArray.fromObject(cfws, GlobalParam.JsonConfig1);
        System.out.println(jarr);

        RealTimeCoalFlowWidth[] ttt = (RealTimeCoalFlowWidth[])JSONArray.toArray(jarr, RealTimeCoalFlowWidth.class);
        System.out.println("ttt.length ：" + ttt.length);
        for (int i=0; i<ttt.length; i++)
        {
            RealTimeCoalFlowWidth t = ttt[i];
            System.out.println("["+i+"] ：" + t.getCameraID()+", "+sdf.format(t.getCoalFlowDateTime())+", "
                    +t.getCoalFlowWidth()+", "+t.getCoalFlowSectionArea()+", "+t.getCoalFlowVelocity());
            //System.out.println(t.getCoalFlowDateTime());
        }

    }

}

　1.2、RealTimeCoalFlowWidth.java

package shh.entity.db;

import java.io.Serializable;
// sqlserver数据库类型对应Java中的数据类型 - _萨瓦迪卡 - 博客园.html(https://www.cnblogs.com/cunkouzh/p/5504052.html)
// ZC: Timestamp没有默认构造函数，无法反射...
import java.util.Date;

public class RealTimeCoalFlowWidth
{
    int CameraID;
    //Timestamp CoalFlowDateTime;
    Date CoalFlowDateTime;
    short CoalFlowWidth;
    short CoalFlowSectionArea;
    short CoalFlowVelocity;

    public int getCameraID() {
        return CameraID;
    }
    public void setCameraID(int cameraID) {
        CameraID = cameraID;
    }
//    public Timestamp getCoalFlowDateTime() {
//        return CoalFlowDateTime;
//    }
//    public void setCoalFlowDateTime(Timestamp coalFlowDateTime) {
//        CoalFlowDateTime = coalFlowDateTime;
//    }
    public Date getCoalFlowDateTime() {
        return CoalFlowDateTime;
    }
    public void setCoalFlowDateTime(Date coalFlowDateTime) {
        CoalFlowDateTime = coalFlowDateTime;
    }

    public short getCoalFlowWidth() {
        return CoalFlowWidth;
    }
    public void setCoalFlowWidth(short coalFlowWidth) {
        CoalFlowWidth = coalFlowWidth;
    }
    public short getCoalFlowSectionArea() {
        return CoalFlowSectionArea;
    }
    public void setCoalFlowSectionArea(short coalFlowSectionArea) {
        CoalFlowSectionArea = coalFlowSectionArea;
    }
    public short getCoalFlowVelocity() {
        return CoalFlowVelocity;
    }
    public void setCoalFlowVelocity(short coalFlowVelocity) {
        CoalFlowVelocity = coalFlowVelocity;
    }
}

　1.3、JsonDateValueProcessor.java

package shh.entity.communicate;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import net.sf.ezmorph.object.DateMorpher;
import net.sf.json.JsonConfig;
import net.sf.json.processors.JsonValueProcessor;
import net.sf.json.util.JSONUtils;

// net.sf.json 时间格式的转化 - LinVan - 博客园.html(https://www.cnblogs.com/linvan/p/5979820.html)

public class JsonDateValueProcessor implements JsonValueProcessor
{
    private String format = "";//"yyyy-MM-dd HH:mm:ss";  

    public JsonDateValueProcessor() {
        super();
    }  

    public JsonDateValueProcessor(String format) {
        super();
        this.format = format;
    }  

    @Override
    public Object processArrayValue(Object paramObject, JsonConfig paramJsonConfig) {
//        System.out.println("<-- <-- <-- <-- <-- <-- <-- <-- <-- ");
        return process(paramObject);
    }  

    @Override
    public Object processObjectValue(String paramString, Object paramObject, JsonConfig paramJsonConfig) {
//        System.out.println("--> --> --> --> --> --> --> --> --> "+paramString);
        return process(paramObject);
    }  

    private Object process(Object value) {
        if (value instanceof Date)
        {
//            System.out.println("<== <== <== <== <== <== <== <== <== <== <== <== <== <== <== <== <== <== ");
            //SimpleDateFormat sdf = new SimpleDateFormat(format, Locale.CHINA);
            SimpleDateFormat sdf = new SimpleDateFormat(format);
            return sdf.format(value);
        }
        return value == null ? "" : value.toString();
    }

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

        JsonConfig jsonConfig = new JsonConfig();
        jsonConfig.registerJsonValueProcessor(Date.class, new JsonDateValueProcessor("yyyy-MM-dd HH:mm:ss.SSS"));
        return jsonConfig;
    }
}

2、C#

　引入：

　　

　2.1、

        private void Click_JsonTest(object sender, RoutedEventArgs e)
        {
            IsoDateTimeConverter timeConverter = new IsoDateTimeConverter();
            timeConverter.DateTimeFormat = "yyyy-MM-dd HH:mm:ss.fff";

        // ***

            DateTime dt = DateTime.Now;

            RealTimeCoalFlowWidth cfw = new RealTimeCoalFlowWidth();
            cfw.CameraID = ;
            //Timestamp CoalFlowDateTime;
            cfw.CoalFlowDateTime = dt;
            cfw.CoalFlowWidth1 = ;
            cfw.CoalFlowSectionArea = ;
            cfw.CoalFlowVelocity = ;

            dt.AddDays(-);

            RealTimeCoalFlowWidth cfw1 = new RealTimeCoalFlowWidth();
            cfw1.CameraID = ;
            //Timestamp CoalFlowDateTime;
            cfw1.CoalFlowDateTime = dt.AddSeconds(-);
            cfw1.CoalFlowWidth1 = ;
            cfw1.CoalFlowSectionArea = ;
            cfw1.CoalFlowVelocity = ;

            RealTimeCoalFlowWidth[] cfws = { cfw, cfw1 };

            string str = JsonConvert.SerializeObject(cfws, timeConverter);
            Console.WriteLine(str);

            RealTimeCoalFlowWidth[] cfws1 = JsonConvert.DeserializeObject<RealTimeCoalFlowWidth[]>(str, timeConverter);
            Console.WriteLine("cfws1 : ");
            Console.WriteLine("\t" + cfws1[].CameraID);
            Console.WriteLine("\t" + cfws1[].CoalFlowDateTime.ToString("yyyy-MM-dd HH:mm:ss.fff"));
            Console.WriteLine("\t" + cfws1[].CoalFlowWidth1);
            Console.WriteLine("\t" + cfws1[].CoalFlowSectionArea);
            Console.WriteLine("\t" + cfws1[].CoalFlowVelocity);
            Console.WriteLine();
            Console.WriteLine("\t" + cfws1[].CameraID);
            Console.WriteLine("\t" + cfws1[].CoalFlowDateTime.ToString("yyyy-MM-dd HH:mm:ss.fff"));
            Console.WriteLine("\t" + cfws1[].CoalFlowWidth1);
            Console.WriteLine("\t" + cfws1[].CoalFlowSectionArea);
            Console.WriteLine("\t" + cfws1[].CoalFlowVelocity);

            // ***
            //DateTime dt = DateTime.Now;
            //string str = JsonConvert.SerializeObject(dt, GlobalParam.IsoDateTimeConverter1);
            //Console.WriteLine(str);

            ////string s = @"2019-12-17T12:45:07.8048002+08:00";
            //string s = "\"2019-12-17 12:45:07.888\"";
            //DateTime dt1 = JsonConvert.DeserializeObject<DateTime>(s, GlobalParam.IsoDateTimeConverter1);
            ////DateTime dt1 = JsonConvert.DeserializeObject<DateTime>(str, timeConverter);
            //Console.WriteLine(dt1.ToString("yyyy-MM-dd HH:mm:ss.fff"));
        }

　2.2、

    public class RealTimeCoalFlowWidth
    {
        public int CameraID;
        //Timestamp CoalFlowDateTime;
        public DateTime CoalFlowDateTime;
        public short CoalFlowWidth1;
        public short CoalFlowSectionArea;
        public short CoalFlowVelocity;
    }

　2.3、经测试，C#中 list转json 和 数组转json 生成的结果是一样的：

RealTimeCoalFlowWidth[] cfws = { cfw, cfw1 };
// 下面是 数组转json的结果
// [{"CameraID":1,"CoalFlowDateTime":"2019-12-24 08:31:50.879","CoalFlowWidth1":3,"CoalFlowSectionArea":4,"CoalFlowVelocity":5},{"CameraID":10,"CoalFlowDateTime":"2019-12-24 08:31:47.879","CoalFlowWidth1":30,"CoalFlowSectionArea":40,"CoalFlowVelocity":50}]
//List<RealTimeCoalFlowWidth> cfws = new List<RealTimeCoalFlowWidth>();
//cfws.Add(cfw);
//cfws.Add(cfw1);
// 下面是 List转json的结果
// [{"CameraID":1,"CoalFlowDateTime":"2019-12-24 08:31:23.328","CoalFlowWidth1":3,"CoalFlowSectionArea":4,"CoalFlowVelocity":5},{"CameraID":10,"CoalFlowDateTime":"2019-12-24 08:31:20.328","CoalFlowWidth1":30,"CoalFlowSectionArea":40,"CoalFlowVelocity":50}]
string str = JsonConvert.SerializeObject(cfws, timeConverter);
Console.WriteLine(str);

　2.4、测试：

            string str = "{ \"CameraID\":\"1\",\"CoalFlowDateTime\":\"2019-12-24 08:31:50.879\",\"CoalFlowWidth1\":\"3\",\"CoalFlowSectionArea\":4,\"CoalFlowVelocity\":5}";
            RealTimeCoalFlowWidth cfw = JsonConvert.DeserializeObject<RealTimeCoalFlowWidth>(str, timeConverter);

            Console.WriteLine("\t" + cfw.CameraID);
            Console.WriteLine("\t" + cfw.CoalFlowDateTime.ToString("yyyy-MM-dd HH:mm:ss.fff"));
            Console.WriteLine("\t" + cfw.CoalFlowWidth1);
            Console.WriteLine("\t" + cfw.CoalFlowSectionArea);
            Console.WriteLine("\t" + cfw.CoalFlowVelocity);

　　输出：（这里测试，C#里面的 int型、short型 可以从 json的string型里面正确的转换得到，于是 java的服务端代码，可以无脑的将SQL查到的数据都转成string了 [未测试 时间上的转换能否OK...]）

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　2.5、测试发现，Newtonsoft.Json 在执行 序列化操作时，无法指定是 序列化 子类还是基类。要想 只序列化 一个对象实例的基类部分属性的话，貌似 我没找到如何做...（反序列化 貌似倒是 可以指定使用具体哪种类型进行反序列化操作的...）

　　PS：我发现，需要 序列化的对象，如果 属性中 有代理(delegate)的话，序列化 操作会报错 ! ! !

　　现在想到一个 折中的方式：通过反射 创建基类实例X，然后 将子类中相关的属性赋值给 实例X，然后对 实例X 进行序列化，最后释放 实例X。

　　测试代码：

　　（1）、子类+基类：

    class Base
    {
        public int Base1 { get; set; }
        public int Base2 { get; set; }

        public virtual string SerializeSHH(Type baseType)
        {
            Type childType = this.GetType();
            object baseObj = Activator.CreateInstance(baseType);

            PropertyInfo[] basePI = baseType.GetProperties();
            for (int i = ; i < basePI.Length; i++)
            {
                PropertyInfo childPI = childType.GetProperty(basePI[i].Name);
                if (childPI != null)
                    basePI[i].SetValue(baseObj, childPI.GetValue(this));
            }

            string rst = JsonConvert.SerializeObject(baseObj);
            baseObj = null;
            return rst;
            //return null;
        }
    }

    class Child1 : Base
    {
        public int C1 { get; set; }
    }

　　（2）、序列化代码

            Child1 c1 = new Child1();
            Console.WriteLine(((Base)c1).SerializeSHH(typeof(Base)));
            Console.WriteLine(((Base)c1).SerializeSHH(typeof(Child1)));

　　（3）、控制台输出

{"Base1":0,"Base2":0}
{"Base1":0,"Base2":0,"C1":0}

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