使用Netbeans 9:
Product Version: Apache NetBeans IDE 9.0 (Build incubator-netbeans-release-334-on-20180708)
Java: 1.8.0_181; Java HotSpot(TM) 64-Bit Server VM 25.181-b13
Runtime: Java(TM) SE Runtime Environment 1.8.0_181-b13
System: Windows 10 version 10.0 running on amd64; UTF-8; en_EN (nb)
我希望能够打印:
String text = "你好!";
System.out.println(text);
结果是:
--- exec-maven-plugin:1.5.0:exec (default-cli) @ JavaApplication1 ---
???
我已经将-J-Dfile.encoding=UTF-8
添加到了/etc/netbeans.conf
,还添加了配置中的VM选项。源编码选项也设置为UTF-8。
过去的Netbeans版本没有问题,在这里我找不到显示UTF-8字符的方法。
我该怎么办?
答案 0 :(得分:1)
对于使用Java 8在NetBeans 9.0中创建的Maven应用程序,需要执行三个操作才能在 Output 窗口中正确显示中文字符,您已经在做前两个操作了:>
-J-Dfile.encoding=UTF-8
中添加netbeans_default_options
,然后重新启动NetBeans。System.setOut(new PrintStream(System.out, true, "UTF8"));
,以便在调用System.out.println()
时使用的打印流支持UTF-8编码。还应注意一些不必要的更改:
file.encoding=UTF-8
。这是代码:
package com.unthreading.mavenchinesechars;
import java.io.PrintStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
public class ChineseChars {
public static void main(String[] args) throws UnsupportedEncodingException {
System.out.println("System.getProperty(\"file.encoding\"): " + System.getProperty("file.encoding"));
System.out.println("Charset.defaultCharset(): " + Charset.defaultCharset());
System.out.println("System.getProperty(\"java.version\"): " + System.getProperty("java.version"));
String text = "你好!";
System.out.println(text); // <<<======================= Fails!
System.setOut(new PrintStream(System.out, true, "UTF8")); // Essential!
System.out.println(text); // <<<======================= Works!
}
}
这是 pom.xml :
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.unthreading</groupId>
<artifactId>MavenChineseChars</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
</project>
这是NetBeans中的输出:
cd D:\NB82\MavenChineseChars; JAVA_HOME=C:\\Java\\jdk1.8.0_181 M2_HOME=C:\\apache-maven-3.6.0 cmd /c "\"\"C:\\apache-maven-3.6.0\\bin\\mvn.cmd\" -Dexec.args=\"-classpath %classpath com.unthreading.mavenchinesechars.ChineseChars\" -Dexec.executable=C:\\Java\\jdk1.8.0_181\\bin\\java.exe -Dmaven.ext.class.path=C:\\NetBeans9\\java\\maven-nblib\\netbeans-eventspy.jar org.codehaus.mojo:exec-maven-plugin:1.5.0:exec\""
Running NetBeans Compile On Save execution. Phase execution is skipped and output directories of dependency projects (with Compile on Save turned on) will be used instead of their jar artifacts.
Scanning for projects...
-----------------< com.unthreading:MavenChineseChars >------------------
Building MavenChineseChars 1.0-SNAPSHOT
--------------------------------[ jar ]---------------------------------
--- exec-maven-plugin:1.5.0:exec (default-cli) @ MavenChineseChars ---
System.getProperty("file.encoding"): Cp1252
Charset.defaultCharset(): windows-1252
System.getProperty("java.version"): 1.8.0_181
???
你好!
------------------------------------------------------------------------
BUILD SUCCESS
------------------------------------------------------------------------
Total time: 1.021 s
Finished at: 2018-12-12T18:24:12-05:00
------------------------------------------------------------------------
在输出中,请注意:
System.setOut(new PrintStream(System.out, true, "UTF8"));
,否则汉字不能正确显示。System.getProperty("file.encoding")
返回“ Cp1252” 而不是“ UTF-8” ,汉字也会呈现: