day12
点击登录按钮时实现对云数据库的查询，然后和输入框的账号和密码的比对确认密码是否正确
public void run() { try { final JSONObject jsonObject=new JSONObject(String.valueOf(HttpUtil.sendPost(requrl,reqdata)));//子线程获取json结果 runOnUiThread(new Runnable() { //主线程运行跳转活动 @Override public void run() { try { System.out.println(shishei+"+qweqew"); Toast.makeText(LoginActivity2.this, jsonObject.get("msg").toString(), Toast.LENGTH_SHORT).show(); System.out.println(jsonObject.get("status")); if(jsonObject.get("status").equals("1")&&shishei.equals("学生")){ //状态码1代表登陆成功 if(!judgeUserExists(name)) recordUser(name); //StudentActivity new Thread(new Runnable() { @Override public void run() { try { requrl="http://123.57.69.167/KeKeTong/findStuIDByUsername";; final String reqdata="shishei="+"学生"+"&username="+name+""; final JSONObject jsonObject=new JSONObject(String.valueOf(HttpUtil.sendPost(requrl,reqdata)));//子线程获取json结果 if(jsonObject.get("status").equals("1")){ //状态码1代表有信息 if((String)jsonObject.opt("StuID")==null) { Intent intent=new Intent(LoginActivity2.this, SetInfo.class) .putExtra("id",jsonObject.get("id").toString()); Bundle bundle=new Bundle();//用Bundle携带数据 bundle.putString("zhanghao", name); //传递name参数为账号 bundle.putString("password", userpwd); //传递密码参数为密码 intent.putExtras(bundle); startActivity(intent);//跳转到设置信息界面 } else { String StuID = (String) jsonObject.get("StuID"); Intent intent = new Intent(LoginActivity2.this, MainActivity.class); Bundle bundle = new Bundle();//用Bundle携带数据 bundle.putString("StuID", StuID); //传递密码参数为密码 intent.putExtras(bundle); startActivity(intent);//跳转到学生主页面 } } else { Intent intent=new Intent(LoginActivity2.this, RegisterActivity.class) .putExtra("id",jsonObject.get("id").toString()); startActivity(intent);//跳转到设置信息界面 } } catch (JSONException e){ e.printStackTrace(); } } }).start(); } else if(jsonObject.get("status").equals("1")&&shishei.equals("教职工")){ //状态码1代表登陆成功 if(!judgeUserExists(name)) recordUser(name); Intent intent=new Intent(LoginActivity2.this, MainActivity.class) .putExtra("id",jsonObject.get("id").toString()); /*Intent intent=new Intent(LoginActivity2.this, SetInfo2.class) .putExtra("id",jsonObject.get("id").toString());*/ Bundle bundle=new Bundle();//用Bundle携带数据 bundle.putString("zhanghao", name); //传递name参数为账号 bundle.putString("password", userpwd); //传递密码参数为密码 intent.putExtras(bundle); startActivity(intent);//跳转到设置登录密码界面 } } catch (JSONException e) { e.printStackTrace(); } } }); } catch (JSONException e) { e.printStackTrace(); } } }).start();
状态码的设计
package Home.login; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import java.util.Random; /** * Created by littlecurl 2018/6/24 */ public class Code { /** * 随机数数组 * 去除了易混淆的 数字 0 和 字母 o O * 数字 1 和 字母 i I l L * 数字 6 和 字母 b * 数字 9 和 字母 q * 字母 c C 和 G * 字母 t （经常和随机线混在一起看不清） */ private static final char[] CHARS = { '2', '3', '4', '5', '7', '8', 'a', 'd', 'e', 'f', 'g', 'h', 'j', 'k', 'm', 'n', 'p', 'r', 's', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'D', 'E', 'F', 'H', 'J', 'K', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' }; private static Code bmpCode; public static Code getInstance() { if(bmpCode == null) bmpCode = new Code(); return bmpCode; } //default settings //验证码默认随机数的个数 private static final int DEFAULT_CODE_LENGTH = 4; //默认字体大小 private static final int DEFAULT_FONT_SIZE = 25; //默认线条的条数 private static final int DEFAULT_LINE_NUMBER = 5; //padding值 private static final int BASE_PADDING_LEFT = 10, RANGE_PADDING_LEFT = 15, BASE_PADDING_TOP = 15, RANGE_PADDING_TOP = 20; //验证码的默认宽高 private static final int DEFAULT_WIDTH = 100, DEFAULT_HEIGHT = 40; //settings decided by the layout xml //canvas width and height private int width = DEFAULT_WIDTH, height = DEFAULT_HEIGHT; //random word space and pading_top private int base_padding_left = BASE_PADDING_LEFT, range_padding_left = RANGE_PADDING_LEFT, base_padding_top = BASE_PADDING_TOP, range_padding_top = RANGE_PADDING_TOP; //number of chars, lines; font size private int codeLength = DEFAULT_CODE_LENGTH, line_number = DEFAULT_LINE_NUMBER, font_size = DEFAULT_FONT_SIZE; //variables private String code; private int padding_left, padding_top; private Random random = new Random(); //验证码图片 public Bitmap createBitmap() { padding_left = 0; Bitmap bp = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); Canvas c = new Canvas(bp); code = createCode(); c.drawColor(Color.WHITE); Paint paint = new Paint(); paint.setAntiAlias(true); paint.setTextSize(font_size); //画验证码 for (int i = 0; i < code.length(); i++) { randomTextStyle(paint); randomPadding(); c.drawText(code.charAt(i) + "", padding_left, padding_top, paint); } //画线条 for (int i = 0; i < line_number; i++) { drawLine(c, paint); } // c.save( Canvas.ALL_SAVE_FLAG );//保存 c.save();//保存 c.restore();// return bp; } public String getCode() { return code; } //生成验证码 private String createCode() { StringBuilder buffer = new StringBuilder(); for (int i = 0; i < codeLength; i++) { buffer.append(CHARS[random.nextInt(CHARS.length)]); } return buffer.toString(); } //画干扰线 private void drawLine(Canvas canvas, Paint paint) { int color = randomColor(); int startX = random.nextInt(width); int startY = random.nextInt(height); int stopX = random.nextInt(width); int stopY = random.nextInt(height); paint.setStrokeWidth(1); paint.setColor(color); canvas.drawLine(startX, startY, stopX, stopY, paint); } //生成随机颜色 private int randomColor() { return randomColor(1); } private int randomColor(int rate) { int red = random.nextInt(256) / rate; int green = random.nextInt(256) / rate; int blue = random.nextInt(256) / rate; return Color.rgb(red, green, blue); } //随机生成文字样式，颜色，粗细，倾斜度 private void randomTextStyle(Paint paint) { int color = randomColor(); paint.setColor(color); paint.setFakeBoldText(random.nextBoolean()); //true为粗体，false为非粗体 float skewX = random.nextInt(11) / 10; skewX = random.nextBoolean() ? skewX : -skewX; paint.setTextSkewX(skewX); //float类型参数，负数表示右斜，整数左斜 //paint.setUnderlineText(true); //true为下划线，false为非下划线 //paint.setStrikeThruText(true); //true为删除线，false为非删除线 } //随机生成padding值 private void randomPadding() { padding_left += base_padding_left + random.nextInt(range_padding_left); padding_top = base_padding_top + random.nextInt(range_padding_top); } }
