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【fix sonar】 RandImageUtil.java文件

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tianwenbo
2023-03-07 15:33:11 +08:00
parent d4318997fc
commit 3b012ef9b0
1 changed files with 24 additions and 17 deletions
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jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/system/util/RandImageUtil.java
+24 -17
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@@ -14,26 +14,27 @@ import java.util.Random;
*/
public class RandImageUtil {
public static final String key = "JERO_LOGIN_KEY";
public static final String KEY = "JERO_LOGIN_KEY";
// public static final String key = "JERO_LOGIN_KEY";
/**
* 定义图形大小
*/
private static final int width = 105;
private static final int WIDTH = 105;
/**
* 定义图形大小
*/
private static final int height = 35;
private static final int HEIGHT = 35;
/**
* 定义干扰线数量
*/
private static final int count = 200;
private static final int COUNT = 200;
/**
* 干扰线的长度=1.414*lineWidth
*/
private static final int lineWidth = 2;
private static final int LINE_WIDTH = 2;
/**
* 图片格式
@@ -45,6 +46,12 @@ public class RandImageUtil {
*/
private static final String BASE64_PRE = "data:image/jpg;base64,";
static final Random random = new Random();
private RandImageUtil() {
}
/**
* 直接通过response 返回图片
* @param response
@@ -73,7 +80,7 @@ public class RandImageUtil {
byte[] bytes = byteStream.toByteArray();
//转换成base64串
String base64 = Base64.getEncoder().encodeToString(bytes).trim();
base64 = base64.replaceAll("\n", "").replaceAll("\r", "");//删除 \r\n
base64 = base64.replace("\n", "").replace("\r", "");//删除 \r\n
//写到指定位置
//ImageIO.write(bufferedImage, "png", new File(""));
@@ -83,25 +90,25 @@ public class RandImageUtil {
private static BufferedImage getImageBuffer(String resultCode){
// 在内存中创建图象
final BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
final BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
// 获取图形上下文
final Graphics2D graphics = (Graphics2D) image.getGraphics();
// 设定背景颜色
graphics.setColor(Color.WHITE); // ---1
graphics.fillRect(0, 0, width, height);
graphics.fillRect(0, 0, WIDTH, HEIGHT);
// 设定边框颜色
// graphics.setColor(getRandColor(100, 200)); // ---2
graphics.drawRect(0, 0, width - 1, height - 1);
graphics.drawRect(0, 0, WIDTH - 1, HEIGHT - 1);
final Random random = new Random();
// final Random random = new Random();
// 随机产生干扰线，使图象中的认证码不易被其它程序探测到
for (int i = 0; i < count; i++) {
for (int i = 0; i < COUNT; i++) {
graphics.setColor(getRandColor(150, 200)); // ---3
final int x = random.nextInt(width - lineWidth - 1) + 1; // 保证画在边框之内
final int y = random.nextInt(height - lineWidth - 1) + 1;
final int xl = random.nextInt(lineWidth);
final int yl = random.nextInt(lineWidth);
final int x = random.nextInt(WIDTH - LINE_WIDTH - 1) + 1; // 保证画在边框之内
final int y = random.nextInt(HEIGHT - LINE_WIDTH - 1) + 1;
final int xl = random.nextInt(LINE_WIDTH);
final int yl = random.nextInt(LINE_WIDTH);
graphics.drawLine(x, y, x + xl, y + yl);
}
// 取随机产生的认证码
@@ -119,7 +126,7 @@ public class RandImageUtil {
}
for(int i = 0; i < 4; i++){
graphics.setColor(getRandColor(0, 256));
graphics.drawLine(0, random.nextInt(height), width, random.nextInt(height));
graphics.drawLine(0, random.nextInt(HEIGHT), WIDTH, random.nextInt(HEIGHT));
}
// 图象生效
graphics.dispose();
@@ -127,7 +134,7 @@ public class RandImageUtil {
}
private static Color getRandColor(int fc, int bc) { // 取得给定范围随机颜色
final Random random = new Random();
// final Random random = new Random();
if (fc > 255) {
fc = 255;
}