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现代软件工程作业第十二题(原十四题)

时间:2016-09-11 14:11:15      阅读:231      评论:0      收藏:0      [点我收藏+]

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12. 开发软件有很多种方式,从软件运行的平台来看,可以在下面的平台运行:
  • 网页 (只要有浏览器就可以访问软件或服务)
  • Windows 平台 (例如最新的Windows 10 支持 PC,Surface,Mobile,甚至Xbox 运行)
  • 安卓平台 
  • iOS 平台 (Mac 和 iPhone)

请找一个同学结对 (参看本书结对编程的内容),两人共同工作 (不能分开干活),从上面的列表中选取两个平台,在每个平台上,写一个最简单的 "Hello World" 类型的程序,把写程序的经历写成博客发布出来,内容包括:

- 什么平台, 用什么编程语言,什么软件构建环境 (IDE),什么软件工程的工具,开发的流程大概是什么,最后程序的源码,和用户界面是什么?

(可以从网上查找相关资料,甚至源程序都可以参考其他人的, 但是要自己把程序编译,运行)

 

1.选择在网页上输出一个:Hello World

  编写一个servlet来在网页上显示helloworld,所用语言为Java,具体的开发流程和构建环境如下:

  首先在Java Resources下的src下新建立一个包,之后建立MyServlet类。

  代码编写如下:

package page;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;

public class MyServlet extends HttpServlet{
   @Override
public void service(ServletRequest req, ServletResponse res)
        throws ServletException, IOException {
    // TODO Auto-generated method stub
       res.setContentType("text/html");
       res.setCharacterEncoding("utf-8");
       PrintWriter writer=null;
       try{
       writer=res.getWriter();
       writer.write("Hello World!");
       }catch(IOException e){
           e.printStackTrace();
       }
}
}

配置好servlet之后,将工程添加部署到Server,然后运行Server。运行成功后,打开浏览器输入:http://localhost:8080/firstweb/hello.do

可以得到网页上显示的 Hello World

技术分享

 

2.选择在安卓平台上输出一个:Hello World

  选用原有的安卓平台开发的app,修改代码来显示出hello world。配置环境等为安卓app开发特定环境,所用语言为Java,代码和界面如下:

package com.example.audiosharer;

import java.io.IOException;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONTokener;

import android.app.Activity;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;

public class Second extends Activity {

    private Button search;
    private EditText cityname;
    //private SayHello helloworld;
    private ImageView weatherImage;
    private TextView temperature;
    private TextView weather;
    private TextView wind;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
                .detectDiskReads().detectDiskWrites().detectNetwork()
                .penaltyLog().build());
        StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
                .detectLeakedSqlLiteObjects().detectLeakedClosableObjects()
                .penaltyLog().penaltyDeath().build());

        setContentView(R.layout.second);

        search = (Button) findViewById(R.id.search);
        cityname = (EditText) findViewById(R.id.cityname);
        //helloworld = (SayHello) findViewById(R.id.helloworld);
        weatherImage = (ImageView) findViewById(R.id.weatherImage);

        temperature = (TextView) findViewById(R.id.temperature);
        weather = (TextView) findViewById(R.id.weather);
        wind = (TextView) findViewById(R.id.wind);

        changeWeather("南京");
        
        search.setOnClickListener(new OnClickListener() {

            @Override
            private String[] getDate() {
                return new String[] {"Hello World"};
            }
            public void onClick(View arg0) {
                changeWeather(cityname.getText().toString());
                
            }
        });
    }
    
    public void changeWeather(String cityname){
        String serverURL = "http://v.juhe.cn/weather/index?key=206b256d722ae1d509bd9760f22fbc69&dtype=json&cityname=" + cityname + "&format=1";
        String result = "";
        HttpGet httpRequest = new HttpGet(serverURL);// 建立http get联机

        try {
            HttpResponse httpResponse = new DefaultHttpClient()
                    .execute(httpRequest);
            if (httpResponse.getStatusLine().getStatusCode() == 200)
                result = EntityUtils.toString(httpResponse.getEntity());// 获取相应的字符串
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }// 发出http请求

        // System.out.println("====================>" + result);

        String tempStr = "";
        String weatherStr = "";
        String windStr = "";
        try {
            JSONTokener jsonParser = new JSONTokener(result);
            JSONObject weatherJson = (JSONObject) jsonParser.nextValue();

            tempStr = weatherJson.getJSONObject("result")
                    .getJSONObject("today").getString("temperature");
            weatherStr = weatherJson.getJSONObject("result")
                    .getJSONObject("today").getString("weather");
            windStr = weatherJson.getJSONObject("result")
                    .getJSONObject("today").getString("wind");
        } catch (JSONException e) {
            e.printStackTrace();
        }

        temperature.setText("        " + tempStr);
        weather.setText("                " + weatherStr);
        wind.setText("              " + windStr);

        if (weatherStr == "晴") {
            weatherImage.setImageResource(R.drawable.weathericon_condition_01);
        } else if (weatherStr.trim().contains("多云")) {
            weatherImage.setImageResource(R.drawable.weathericon_condition_03);
        } else if (weatherStr.trim().contains("阴")) {
            weatherImage.setImageResource(R.drawable.weathericon_condition_04);
        } else if(weatherStr.trim().contains("雾")){
            weatherImage.setImageResource(R.drawable.weathericon_condition_05);
        } else if(weatherStr.trim().contains("沙尘暴")){
            weatherImage.setImageResource(R.drawable.weathericon_condition_06);
        } else if(weatherStr.trim().contains("阵雨")){
            weatherImage.setImageResource(R.drawable.weathericon_condition_07);
        } else if (weatherStr.trim().contains("雨")) {
            weatherImage.setImageResource(R.drawable.weathericon_condition_08);
        } else if (weatherStr.trim().contains("小雨")) {
            weatherImage.setImageResource(R.drawable.weathericon_condition_08);
        } else if (weatherStr.trim().contains("大雨")) {
            weatherImage.setImageResource(R.drawable.weathericon_condition_09);
        } else if (weatherStr.trim().contains("雷阵雨")) {
            weatherImage.setImageResource(R.drawable.weathericon_condition_10);
        } else if(weatherStr.trim().contains("雪")){
            weatherImage.setImageResource(R.drawable.weathericon_condition_11);
        } else if(weatherStr.trim().contains("小雪")){
            weatherImage.setImageResource(R.drawable.weathericon_condition_12);
        } else if(weatherStr.trim().contains("大雪")){
            weatherImage.setImageResource(R.drawable.weathericon_condition_13);
        } else if(weatherStr.trim().contains("雨夹雪")){
            weatherImage.setImageResource(R.drawable.weathericon_condition_14);
        } 
    }

}

应用中所显示的界面为:

技术分享

 

现代软件工程作业第十二题(原十四题)

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原文地址:http://www.cnblogs.com/summer23/p/5861652.html

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