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...]）

	1

	2019-12-24 08:31:50.879

	3

	4

	5

　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}

3、

4、

5、

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