2024.3.22

第十四天

所花时间：2小时

代码量：400+

博客量：1

了解到的知识点：页面布局部分和数据库操作部分

package com.hui.kechengtianjia;

import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

public class UserService {
    public static boolean signIn(String classname, String teacher,String place) {
        MyThread myThread = new MyThread("http://192.168.43.157:8080/cx/SignIn",classname,teacher,place);
        try
        {
            myThread.start();
            myThread.join();
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }

        return myThread.getResult();
    }

    public static boolean signUp(String classname, String teacher,String place) {
        MyThread myThread = new MyThread("http://192.168.43.157:8080/cx/SignUp",classname,teacher,place);
        try
        {
            myThread.start();
            myThread.join();
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }
        return myThread.getResult();
    }
}

class MyThread extends Thread
{
    private String path;
    private String classname;
    private String teacher;
    private String place;
    private boolean result = false;

    public MyThread(String path,String classname,String teacher,String place)
    {
        this.path = path;
        this.classname = classname;
        this.teacher = teacher;
        this.place = place;
    }
    @Override
    public void run()
    {
        try {
            URL url = new URL(path);
            HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
            httpURLConnection.setConnectTimeout(8000);//设置连接超时时间
            httpURLConnection.setReadTimeout(8000);//设置读取超时时间
            httpURLConnection.setRequestMethod("POST");//设置请求方法,post

            String data = "classname=" + URLEncoder.encode(classname, "utf-8") + "&teacher=" + URLEncoder.encode(teacher, "utf-8")+ "&place=" + URLEncoder.encode(place, "utf-8");//设置数据
            httpURLConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");//设置响应类型
            httpURLConnection.setRequestProperty("Content-Length", data.length() + "");//设置内容长度
            httpURLConnection.setDoOutput(true);//允许输出
            OutputStream outputStream = httpURLConnection.getOutputStream();
            outputStream.write(data.getBytes("utf-8"));//写入数据
            result = (httpURLConnection.getResponseCode() == 200);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public boolean getResult()
    {
        return result;
    }
}
//    MyThread myThread = new MyThread("http://192.168.43.157:8080/cx/SignUp",classname,teacher,place);
//    MyThread myThread = new MyThread("http://192.168.43.157:8080/cx/SignIn",classname,teacher,place);

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    android:orientation="vertical"
    >

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="课程名称"
            />
        <EditText
            android:layout_width="300dp"
            android:layout_height="60dp"
            android:id="@+id/etclass"
            />
    </LinearLayout>
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="任课教师"
            />
        <EditText
            android:layout_width="300dp"
            android:layout_height="60dp"
            android:id="@+id/etteacher"
            />
    </LinearLayout>
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="上课地点"
            />
        <EditText
            android:layout_width="300dp"
            android:layout_height="60dp"
            android:id="@+id/etplace"
            />
    </LinearLayout>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <Button
            android:layout_width="120dp"
            android:layout_height="60dp"
            android:text="添加"
            android:id="@+id/signup"
            />
        <Button
            android:layout_width="120dp"
            android:layout_height="60dp"
            android:text="登录"
            android:id="@+id/signin"
            />
    </LinearLayout>
</LinearLayout>