我如何在控制台打印颜色?当处理器发送数据时，我想用不同的颜色显示数据，当处理器接收数据时，我想用不同的颜色显示数据。
当前回答
一种相当可移植的方法是使用原始转义序列。参见http://en.wikipedia.org/wiki/ANSI_escape_code
[编辑为user9999999 on 2017-02-20]
Java不“处理代码”，这是真的，但是Java输出你让它输出的东西。Windows控制台将ESC (chr(27))视为另一个符号(←)，这不是Java的错。
其他回答
尝试以下枚举:
enum Color {
//Color end string, color reset
RESET("\033[0m"),
// Regular Colors. Normal color, no bold, background color etc.
BLACK("\033[0;30m"), // BLACK
RED("\033[0;31m"), // RED
GREEN("\033[0;32m"), // GREEN
YELLOW("\033[0;33m"), // YELLOW
BLUE("\033[0;34m"), // BLUE
MAGENTA("\033[0;35m"), // MAGENTA
CYAN("\033[0;36m"), // CYAN
WHITE("\033[0;37m"), // WHITE
// Bold
BLACK_BOLD("\033[1;30m"), // BLACK
RED_BOLD("\033[1;31m"), // RED
GREEN_BOLD("\033[1;32m"), // GREEN
YELLOW_BOLD("\033[1;33m"), // YELLOW
BLUE_BOLD("\033[1;34m"), // BLUE
MAGENTA_BOLD("\033[1;35m"), // MAGENTA
CYAN_BOLD("\033[1;36m"), // CYAN
WHITE_BOLD("\033[1;37m"), // WHITE
// Underline
BLACK_UNDERLINED("\033[4;30m"), // BLACK
RED_UNDERLINED("\033[4;31m"), // RED
GREEN_UNDERLINED("\033[4;32m"), // GREEN
YELLOW_UNDERLINED("\033[4;33m"), // YELLOW
BLUE_UNDERLINED("\033[4;34m"), // BLUE
MAGENTA_UNDERLINED("\033[4;35m"), // MAGENTA
CYAN_UNDERLINED("\033[4;36m"), // CYAN
WHITE_UNDERLINED("\033[4;37m"), // WHITE
// Background
BLACK_BACKGROUND("\033[40m"), // BLACK
RED_BACKGROUND("\033[41m"), // RED
GREEN_BACKGROUND("\033[42m"), // GREEN
YELLOW_BACKGROUND("\033[43m"), // YELLOW
BLUE_BACKGROUND("\033[44m"), // BLUE
MAGENTA_BACKGROUND("\033[45m"), // MAGENTA
CYAN_BACKGROUND("\033[46m"), // CYAN
WHITE_BACKGROUND("\033[47m"), // WHITE
// High Intensity
BLACK_BRIGHT("\033[0;90m"), // BLACK
RED_BRIGHT("\033[0;91m"), // RED
GREEN_BRIGHT("\033[0;92m"), // GREEN
YELLOW_BRIGHT("\033[0;93m"), // YELLOW
BLUE_BRIGHT("\033[0;94m"), // BLUE
MAGENTA_BRIGHT("\033[0;95m"), // MAGENTA
CYAN_BRIGHT("\033[0;96m"), // CYAN
WHITE_BRIGHT("\033[0;97m"), // WHITE
// Bold High Intensity
BLACK_BOLD_BRIGHT("\033[1;90m"), // BLACK
RED_BOLD_BRIGHT("\033[1;91m"), // RED
GREEN_BOLD_BRIGHT("\033[1;92m"), // GREEN
YELLOW_BOLD_BRIGHT("\033[1;93m"), // YELLOW
BLUE_BOLD_BRIGHT("\033[1;94m"), // BLUE
MAGENTA_BOLD_BRIGHT("\033[1;95m"), // MAGENTA
CYAN_BOLD_BRIGHT("\033[1;96m"), // CYAN
WHITE_BOLD_BRIGHT("\033[1;97m"), // WHITE
// High Intensity backgrounds
BLACK_BACKGROUND_BRIGHT("\033[0;100m"), // BLACK
RED_BACKGROUND_BRIGHT("\033[0;101m"), // RED
GREEN_BACKGROUND_BRIGHT("\033[0;102m"), // GREEN
YELLOW_BACKGROUND_BRIGHT("\033[0;103m"), // YELLOW
BLUE_BACKGROUND_BRIGHT("\033[0;104m"), // BLUE
MAGENTA_BACKGROUND_BRIGHT("\033[0;105m"), // MAGENTA
CYAN_BACKGROUND_BRIGHT("\033[0;106m"), // CYAN
WHITE_BACKGROUND_BRIGHT("\033[0;107m"); // WHITE
private final String code;
Color(String code) {
this.code = code;
}
@Override
public String toString() {
return code;
}
}
现在我们来举个小例子:
class RunApp {
public static void main(String[] args) {
System.out.print(Color.BLACK_BOLD);
System.out.println("Black_Bold");
System.out.print(Color.RESET);
System.out.print(Color.YELLOW);
System.out.print(Color.BLUE_BACKGROUND);
System.out.println("YELLOW & BLUE");
System.out.print(Color.RESET);
System.out.print(Color.YELLOW);
System.out.println("YELLOW");
System.out.print(Color.RESET);
}
}
下面是带有公共静态字段的Java类中的颜色列表
使用
System.out.println(ConsoleColors.RED + "RED COLORED" +
ConsoleColors.RESET + " NORMAL");
请注意 不要忘记在打印后使用RESET，因为如果它没有被清除，效果将仍然存在
public class ConsoleColors {
// Reset
public static final String RESET = "\033[0m"; // Text Reset
// Regular Colors
public static final String BLACK = "\033[0;30m"; // BLACK
public static final String RED = "\033[0;31m"; // RED
public static final String GREEN = "\033[0;32m"; // GREEN
public static final String YELLOW = "\033[0;33m"; // YELLOW
public static final String BLUE = "\033[0;34m"; // BLUE
public static final String PURPLE = "\033[0;35m"; // PURPLE
public static final String CYAN = "\033[0;36m"; // CYAN
public static final String WHITE = "\033[0;37m"; // WHITE
// Bold
public static final String BLACK_BOLD = "\033[1;30m"; // BLACK
public static final String RED_BOLD = "\033[1;31m"; // RED
public static final String GREEN_BOLD = "\033[1;32m"; // GREEN
public static final String YELLOW_BOLD = "\033[1;33m"; // YELLOW
public static final String BLUE_BOLD = "\033[1;34m"; // BLUE
public static final String PURPLE_BOLD = "\033[1;35m"; // PURPLE
public static final String CYAN_BOLD = "\033[1;36m"; // CYAN
public static final String WHITE_BOLD = "\033[1;37m"; // WHITE
// Underline
public static final String BLACK_UNDERLINED = "\033[4;30m"; // BLACK
public static final String RED_UNDERLINED = "\033[4;31m"; // RED
public static final String GREEN_UNDERLINED = "\033[4;32m"; // GREEN
public static final String YELLOW_UNDERLINED = "\033[4;33m"; // YELLOW
public static final String BLUE_UNDERLINED = "\033[4;34m"; // BLUE
public static final String PURPLE_UNDERLINED = "\033[4;35m"; // PURPLE
public static final String CYAN_UNDERLINED = "\033[4;36m"; // CYAN
public static final String WHITE_UNDERLINED = "\033[4;37m"; // WHITE
// Background
public static final String BLACK_BACKGROUND = "\033[40m"; // BLACK
public static final String RED_BACKGROUND = "\033[41m"; // RED
public static final String GREEN_BACKGROUND = "\033[42m"; // GREEN
public static final String YELLOW_BACKGROUND = "\033[43m"; // YELLOW
public static final String BLUE_BACKGROUND = "\033[44m"; // BLUE
public static final String PURPLE_BACKGROUND = "\033[45m"; // PURPLE
public static final String CYAN_BACKGROUND = "\033[46m"; // CYAN
public static final String WHITE_BACKGROUND = "\033[47m"; // WHITE
// High Intensity
public static final String BLACK_BRIGHT = "\033[0;90m"; // BLACK
public static final String RED_BRIGHT = "\033[0;91m"; // RED
public static final String GREEN_BRIGHT = "\033[0;92m"; // GREEN
public static final String YELLOW_BRIGHT = "\033[0;93m"; // YELLOW
public static final String BLUE_BRIGHT = "\033[0;94m"; // BLUE
public static final String PURPLE_BRIGHT = "\033[0;95m"; // PURPLE
public static final String CYAN_BRIGHT = "\033[0;96m"; // CYAN
public static final String WHITE_BRIGHT = "\033[0;97m"; // WHITE
// Bold High Intensity
public static final String BLACK_BOLD_BRIGHT = "\033[1;90m"; // BLACK
public static final String RED_BOLD_BRIGHT = "\033[1;91m"; // RED
public static final String GREEN_BOLD_BRIGHT = "\033[1;92m"; // GREEN
public static final String YELLOW_BOLD_BRIGHT = "\033[1;93m";// YELLOW
public static final String BLUE_BOLD_BRIGHT = "\033[1;94m"; // BLUE
public static final String PURPLE_BOLD_BRIGHT = "\033[1;95m";// PURPLE
public static final String CYAN_BOLD_BRIGHT = "\033[1;96m"; // CYAN
public static final String WHITE_BOLD_BRIGHT = "\033[1;97m"; // WHITE
// High Intensity backgrounds
public static final String BLACK_BACKGROUND_BRIGHT = "\033[0;100m";// BLACK
public static final String RED_BACKGROUND_BRIGHT = "\033[0;101m";// RED
public static final String GREEN_BACKGROUND_BRIGHT = "\033[0;102m";// GREEN
public static final String YELLOW_BACKGROUND_BRIGHT = "\033[0;103m";// YELLOW
public static final String BLUE_BACKGROUND_BRIGHT = "\033[0;104m";// BLUE
public static final String PURPLE_BACKGROUND_BRIGHT = "\033[0;105m"; // PURPLE
public static final String CYAN_BACKGROUND_BRIGHT = "\033[0;106m"; // CYAN
public static final String WHITE_BACKGROUND_BRIGHT = "\033[0;107m"; // WHITE
}
这个kotlin代码对我有用
import java.io.PrintStream
sealed class BackgroundColor(val value: Int) {
object Default : BackgroundColor(0)
// normal colors
object Black : BackgroundColor(40)
object Red : BackgroundColor(41)
object Green : BackgroundColor(42)
object Yellow : BackgroundColor(43)
object Blue : BackgroundColor(44)
object Magenta : BackgroundColor(45)
object Cyan : BackgroundColor(46)
object White : BackgroundColor(47)
// colors with high contrast
object BlackBright : BackgroundColor(100)
object RedBright : BackgroundColor(101)
object GreenBright : BackgroundColor(102)
object YellowBright : BackgroundColor(103)
object BlueBright : BackgroundColor(104)
object MagentaBright : BackgroundColor(105)
object CyanBright : BackgroundColor(106)
object WhiteBright : BackgroundColor(107)
}
sealed class TextColor(val value: Int) {
object Default : TextColor(0)
// normal colors
object Black : TextColor(30)
object Red : TextColor(31)
object Green : TextColor(32)
object Yellow : TextColor(33)
object Blue : TextColor(34)
object Magenta : TextColor(35)
object Cyan : TextColor(36)
object White : TextColor(37)
// colors with high contrast
object BlackBright : TextColor(90)
object RedBright : TextColor(91)
object GreenBright : TextColor(92)
object YellowBright : TextColor(93)
object BlueBright : TextColor(94)
object MagentaBright : TextColor(95)
object CyanBright : TextColor(96)
object WhiteBright : TextColor(97)
}
fun styleOutput(
backgroundColor: BackgroundColor = BackgroundColor.Default,
textColor: TextColor = TextColor.Default,
boldText : Boolean = false,
italicText : Boolean = false,
underLineText : Boolean = false,
action : PrintStream.() -> Unit
) {
val styleFormat = StringBuilder("${27.toChar()}[${backgroundColor.value};${textColor.value}")
if (boldText)
styleFormat.append(";1")
if (italicText)
styleFormat.append(";3")
if (underLineText)
styleFormat.append(";4")
styleFormat.append("m")
print(styleFormat)
System.out.action()
print("${27.toChar()}[0m")
}
然后使用它
print("text without styling")
styleOutput(backgroundColor = BackgroundColor.Blue, textColor = TextColor.GreenBright, boldText = true) {
print("text with styling")
}
print("text without styling")
如果您的终端支持它，您可以使用ANSI转义码在输出中使用颜色。它通常适用于Unix shell提示符;然而，它并不适用于Windows命令提示符(尽管，它适用于Cygwin)。例如，你可以为颜色定义这样的常量:
public static final String ANSI_RESET = "\u001B[0m";
public static final String ANSI_BLACK = "\u001B[30m";
public static final String ANSI_RED = "\u001B[31m";
public static final String ANSI_GREEN = "\u001B[32m";
public static final String ANSI_YELLOW = "\u001B[33m";
public static final String ANSI_BLUE = "\u001B[34m";
public static final String ANSI_PURPLE = "\u001B[35m";
public static final String ANSI_CYAN = "\u001B[36m";
public static final String ANSI_WHITE = "\u001B[37m";
然后，您可以在必要时引用它们。
例如，使用上述常量，你可以在受支持的终端上输出如下红色文本:
System.out.println(ANSI_RED + "This text is red!" + ANSI_RESET);
更新:您可能想要查看Jansi库。它提供了一个API，并支持使用JNI的Windows。我还没试过;然而，它看起来很有希望。
更新2:同样，如果你想改变文本的背景颜色为不同的颜色，你也可以尝试以下方法:
public static final String ANSI_BLACK_BACKGROUND = "\u001B[40m";
public static final String ANSI_RED_BACKGROUND = "\u001B[41m";
public static final String ANSI_GREEN_BACKGROUND = "\u001B[42m";
public static final String ANSI_YELLOW_BACKGROUND = "\u001B[43m";
public static final String ANSI_BLUE_BACKGROUND = "\u001B[44m";
public static final String ANSI_PURPLE_BACKGROUND = "\u001B[45m";
public static final String ANSI_CYAN_BACKGROUND = "\u001B[46m";
public static final String ANSI_WHITE_BACKGROUND = "\u001B[47m";
例如:
System.out.println(ANSI_GREEN_BACKGROUND + "This text has a green background but default text!" + ANSI_RESET);
System.out.println(ANSI_RED + "This text has red text but a default background!" + ANSI_RESET);
System.out.println(ANSI_GREEN_BACKGROUND + ANSI_RED + "This text has a green background and red text!" + ANSI_RESET);
为控制台文本上色的最好方法是使用ANSI转义码。除了文本颜色，ANSI转义码还允许背景色、装饰色等。
Unix
如果你使用springboot，文本着色有一个特定的enum: org.springframework.boot.ansi.AnsiColor
Jansi库更高级一点(可以使用所有的ANSI转义代码函数)，提供了一个API，并支持使用JNA的Windows。
否则，您可以手动定义自己的颜色，如其他响应所示。
Windows 10
Windows 10(自build 10.0.10586 - 2015年11月)支持ANSI转义码(MSDN文档)，但默认情况下不启用。启用它:
对于SetConsoleMode API，使用ENABLE_VIRTUAL_TERMINAL_PROCESSING (0x0400)标志。Jansi使用这个选项。 如果没有使用SetConsoleMode API，可以通过创建一个dword来更改全局注册表键HKEY_CURRENT_USER\Console\VirtualTerminalLevel，并将其设置为0或1用于ANSI处理: “VirtualTerminalLevel”= dword: 00000001
Windows 10之前
Windows控制台不支持ANSI颜色。但也可以使用控制台。
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