這次把登錄註冊界面都完善好了(我舉得蠻可愛hh)(跟第一次的界面完全不一樣了🤔)
增添了驗證碼功能、密碼MD5加密和上傳照片功能
驗證碼單獨寫了個類,這個大小寫也得區別(emmm雖然是問的度娘但是我也研究了半天😱)
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.Random;
import javax.swing.JComponent;
public class ValidCode extends JComponent implements MouseListener {
/**
*
*/
private static final long serialVersionUID = 1L;
private String code;
private int width, height = 40;
private int codeLength = 4;
private Random random = new Random();
public ValidCode() {
width = this.codeLength * 16 + (this.codeLength - 1) * 10;
setPreferredSize(new Dimension(width, height));
setSize(width, height);
this.addMouseListener(this);
setToolTipText("點擊可以更換驗證碼");
}
public int getCodeLength() {
return codeLength;
}
/*
設置驗證碼文字的長度
*/
public void setCodeLength(int codeLength) {
if(codeLength < 4) {
this.codeLength = 4;
} else {
this.codeLength = codeLength;
}
}
public String getCode() {
return code;
}
/*
產生隨機的顏色
*/
public Color getRandColor(int min, int max) {
if (min > 255)
min = 255;
if (max > 255)
max = 255;
int red = random.nextInt(max - min) + min;
int green = random.nextInt(max - min) + min;
int blue = random.nextInt(max - min) + min;
return new Color(red, green, blue);
}
/*
設置驗證碼具體的字母是什麼
*/
protected String generateCode() {
char[] codes = new char[this.codeLength];
for (int i = 0, len = codes.length; i < len; i++) {
if (random.nextBoolean()) {
codes[i] = (char) (random.nextInt(26) + 65);
} else {
codes[i] = (char) (random.nextInt(26) + 97);
}
}
this.code = new String(codes);
return this.code;
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if(this.code == null || this.code.length() != this.codeLength) {
this.code = generateCode();
}
width = this.codeLength * 16 + (this.codeLength - 1) * 10;
super.setSize(width, height);
super.setPreferredSize(new Dimension(width, height));
Font mFont = new Font("Arial", Font.BOLD | Font.ITALIC, 25);
g.setFont(mFont);
//繪製出驗證碼的背景的矩形輪廓
Graphics2D g2d = (Graphics2D) g;
g2d.setColor(getRandColor(200, 250));
g2d.fillRect(0, 0, width, height);
g2d.setColor(getRandColor(180, 200));
g2d.drawRect(0, 0, width - 1, height - 1);
//繪製出驗證碼背景的線
int i = 0, len = 150;
for (; i < len; i++) {
int x = random.nextInt(width - 1);
int y = random.nextInt(height - 1);
int x1 = random.nextInt(width - 10) + 10;
int y1 = random.nextInt(height - 4) + 4;
g2d.setColor(getRandColor(180, 200));
g2d.drawLine(x, y, x1, y1);
}
//繪製出驗證碼的具體字母
i = 0; len = this.codeLength;
FontMetrics fm = g2d.getFontMetrics();
int base = (height - fm.getHeight())/2 + fm.getAscent();
for(;i<len;i++) {
int b = random.nextBoolean() ? 1 : -1;
g2d.rotate(random.nextInt(10)*0.01*b);
g2d.setColor(getRandColor(20, 130));
g2d.drawString(code.charAt(i)+"", 16 * i + 10, base);
}
}
//下一個驗證碼
public void nextCode() {
generateCode();
repaint();
}
@Override
public void mouseClicked(MouseEvent e) {
nextCode();
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
}
MD5加密方法
public void encrypByMd5(String context) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(context.getBytes());//update處理
byte [] encryContext = md.digest();//調用該方法完成計算
int i;
StringBuffer buf = new StringBuffer("");
for (int offset = 0; offset < encryContext.length; offset++) {//做相應的轉化(十六進制)
i = encryContext[offset];
if (i < 0) i += 256;
if (i < 16) buf.append("0");
buf.append(Integer.toHexString(i));
}
System.out.println("32result: " + buf.toString());// 32位的加密
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
那個管理員和學生界面還沒寫好呢明天接着寫!
我覺得我下週就可以完成了嘎嘎嘎嘎(上週的flag這周存檔了,下週再讀檔😁)