Maven UTF-8编码问题 [英] Maven UTF-8 encoding issue

问题描述

当我在带有两个不同项目的代码下运行时，我将获得不同的输出.

When I run below code with two different project I get different outputs.

    String myString = "Türkçe Karakter Testi : ğüşiöçĞÜİŞÇÖĞ";
    String value = new String(myString.getBytes("UTF-8"));
    System.out.println(value);

第一个项目是在Netbeans 8.2中创建的非Maven Java应用程序.它给了我预期的以下结果.

First project is non-maven java application created in Netbeans 8.2. And it gives me following result which i expect.

TürkçeKarakter Testi:ğüşiöçĞÜİŞÇÖĞ"

"Türkçe Karakter Testi : ğüşiöçĞÜİŞÇÖĞ"

第二个项目是maven java应用程序项目，它是通过以下pom.xml文件以相同的方式创建的:

And second project is maven java application project which is created in same way with following pom.xml file:

<?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.mycompany</groupId>
    <artifactId>mavenproject1</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
</project>

这个项目给我:

TärkçeKarakter Testi:ğüşiö¶§Ä?ÜİÅ?ÇÃâÄ?"

"Türkçe Karakter Testi : ğüşiöçÄ?ÜİÅ?ÇÖÄ?"

我用notepad ++检查了两个文件，并且两个文件都使用UTF-8编码

I checked both file with notepad++ and both of them are encoded with UTF-8

推荐答案

您缺少new String()构造函数的编码，因此它使用的是平台的默认编码，不是 UTF-8(看起来像ISO-8859-1的某些变体).

You're missing the encoding from your new String() constructor, so it's using the default encoding of your platform which isn't UTF-8 (looks like some variant of ISO-8859-1).

如果使用以下代码(虽然没有多大意义，但是显示了默认的编码错误)，您会看到它在所有位置都正确打印.

If you use the following code (which doesn't make much sense, but shows the default encoding botching things), you'll see that it's printed properly everywhere.

String myString = "Türkçe Karakter Testi : ğüşiöçĞÜİŞÇÖĞ";
String value = new String(myString.getBytes("UTF-8"), "UTF-8");
System.out.println(value);

这是什么课?始终指定在处理byte/character转换时要使用的编码！其中包括String.getBytes()，new String()和new InputStreamReader()之类的方法.

What's the lesson here? Always specify the encoding to use when dealing with byte/character conversion! This includes such methods as String.getBytes(), new String() and new InputStreamReader().

这只是字符编码在后面咬住您的众多方式之一.这似乎是一个简单的问题，但始终吸引着毫无戒心的开发人员.

This is just one of the many ways that character encoding can bite you in the behind. It may seem like a simple problem, but it catches unsuspecting developers all the time.

这篇关于Maven UTF-8编码问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！