使用C#利用cmd来调用java jar包获取其中的数据

其实也很简单,就是在C#中构建一个Process,启动jar包,并且给jar包传递参数

因为我并没有怎么学过JAVA,所以只写了个很小的Demo,就是根据传入的参数获取对应的数据

以下是JAVA Demo

package com.movie;

import static java.lang.System.*;

/**
 * Created by rZH on 2018/11/21
 */
public class MovieInfo {
    public static void main(String[] args){
        //如果当前无请求参数
        if ( args.length<=0){
            //则程序终止
            return;
        }

        //构建数据对象
        DataClass dc=new DataClass();
        //获取传进来的第一个参数
        String arg=args[0];
        //使用数据对象根据参数来得到对应的数据
        String str= dc.GetMovieListJson(arg);
        //打印数据
        out.println(str);
    }
}

　　

package com.movie;

/**
 * Created by rZH on 2018/11/21
 */
public class Movie {
    public Movie(String name,String beginTime,String room,String date,String version,String language){
        this.Name=name;
        this.BeginTime=beginTime;
        this.Data=date;
        this.Room=room;
        this.Version=version;
        this.Language=language;
    }
    public String Name;
    public String BeginTime;
    public String Room;
    public String Data;
    public String Version;
    public String Language;
}

package com.movie;

import com.alibaba.fastjson.JSON;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by rZH on 2018/11/21
 */
public class DataClass {
    public String GetMovieListJson(String date){
        List<Movie> list=new ArrayList<Movie>();
        list.add(new Movie("M1","13:00","1号厅","20181120","2D","国语"));
        list.add(new Movie("M1","13:20","2号厅","20181120","2D","国语"));
        list.add(new Movie("M2","13:40","3号厅","20181120","3D","国语"));
        list.add(new Movie("M1","14:00","4号厅","20181120","2D","英语"));
        list.add(new Movie("M1","15:00","5号厅","20181120","2D","国语"));
        list.add(new Movie("M3","14:30","2号厅","20181120","2D","国语"));
        list.add(new Movie("M1","15:20","3号厅","20181130","3D","国语"));
        list.add(new Movie("M1","14:40","4号厅","20181120","2D","国语"));
        list.add(new Movie("M1","16:00","5号厅","20181122","2D","原话"));
        list.add(new Movie("M2","16:20","1号厅","20181120","3D","国语"));
        list.add(new Movie("M1","16:35","2号厅","20181122","2D","国语"));
        list.add(new Movie("M1","17:00","4号厅","20181120","2D","国语"));
        list.add(new Movie("M2","17:20","3号厅","20181120","3D","国语"));
        list.add(new Movie("M1","17:45","5号厅","20181120","2D","粤语"));
        list.add(new Movie("M4","18:00","2号厅","20181120","2D","国语"));

        List<Movie> ml=new ArrayList<Movie>();
        for(int i=0;i<list.size();i++){
            if (list.get(i).Data.equals(date)){
                ml.add(list.get(i));
            }
        }

       String str = JSON.toJSONString(ml);
        return str;
    }
}

额,原谅我真不会写JAVA,就这些代码我还是在网上东查西查才查出来的,也原谅我用C#的风格去写吧

接着就是C#里面的,这个方法是在网上找的,某个博主写的,网页关了我找不着本人了

我的一些配置是写在app.config文件里的

以下是该文件的内容

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <startup>
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
    </startup>
    <appSettings>
        <!--cmd需要启动的程序路径-->
        <add key="startPath" value="cmd.exe"/>
        <!--cmd程序启动的程序命令-->
        <add key="args" value="java -jar F:\JavaMovieDemo\out\artifacts\JavaMovieDemo_jar\JavaMovieDemo.jar"/>
    </appSettings>
</configuration>

　　

 static void Main (string[] args)
        {
            //运行程序
           string result= RunCmdAndGet (ConfigurationManager.AppSettings["args"]+ " 20181120");
            Console.WriteLine ("从java包得到的数据是:\r\n");
            Console.WriteLine (result);
            Console.ReadKey ();
        }

        /// <summary>
        /// 启动CMD并且获取到数据
        /// </summary>
        /// <param name="query"></param>
        public static string RunCmdAndGet (string query)
        {
            Process CmdProcess = new Process ();
            CmdProcess.StartInfo.FileName = ConfigurationManager.AppSettings["startPath"];

            CmdProcess.StartInfo.CreateNoWindow = true;         // 不创建新窗口
            CmdProcess.StartInfo.UseShellExecute = false;       //不启用shell启动进程
            CmdProcess.StartInfo.RedirectStandardInput = true;  // 重定向输入
            CmdProcess.StartInfo.RedirectStandardOutput = true; // 重定向标准输出
            CmdProcess.StartInfo.RedirectStandardError = true;  // 重定向错误输出  

            CmdProcess.StartInfo.Arguments = "/c " + query;//“/C”表示执行完命令后马上退出
            CmdProcess.Start ();//执行  

           string result= CmdProcess.StandardOutput.ReadToEnd ();//获取返回值  

            CmdProcess.WaitForExit ();//等待程序执行完退出进程  

            CmdProcess.Close ();//结束
            return result;
        }

　　

以下图片就是结果