Unicode字符（阿拉伯字母）在IDE控制台中显示为问号 [英] Unicode characters (Arabic letters) show up as question marks in IDE console

问题描述

我使用JSF 2.0，我有文本字段

 < h：form& 
< h：inputText value =＃{myBean.myValue}/> 
< h：commandButton value =Submitaction =＃{myBean.printMe（）}/> 
< / h：form> 
  

  public void printMe（）{
 System.out.println（first line ==+ myValue +==）; 
 System.out.println（second line ==يشسيبشسيبشسيبشيس==）; 
} 
  

当我运行这个项目并输入يشسيبشسيبشسيبشيس在文本框中，在IDE控制台中，如下所示。

  INFO：first line == ???? == 
 INFO：second line == == 
  
 
 
 
有什么想法为什么会发生这种情况？
解决方案
这是使用错误的控制台编码造成的。
 
 
 
 
  System.out.println（My Data is+ fullName）; 
  
打印到标准输出（stdout）。您需要将其配置为使用UTF-8。假设您使用的是Eclipse，那么您需要通过首选项>常规>工作区>文本文件编码，将stdout编码更改为UTF-8。
 
 
 
 > 
 
 
 
如果你使用Netbeans，我不能从顶部回答，回到这个答案：希伯来语在netbeans中显示为问号，其中包含指向此 Netbeans Wiki < a>其中提到以下内容：
 
 
要更改项目的语言编码：
 
 
在Projects（项目）窗口中右键单击项目节点，然后选择Properties（属性）。
 
 
在Sources下，从Encoding下拉字段中选择一个编码值。 
 
 
 
 
 
 
 
另请参阅：
 
 
 
 
 
  Unicode  - 如何获得正确的字符？ 
 
 
 
 
 
 
 
 
  >具体问题，过滤器中的那些行是不必要的
  res.setCharacterEncoding（UTF-8）; 
 res.setContentType（text / html; charset = utf-8）; 
  
它们在JSF2 / Facelets的情况下默认为正确的值。删除这些行。
 
I am using JSF 2.0 and I have text field as 
<h:form>
    <h:inputText value="#{myBean.myValue}" />
    <h:commandButton value="Submit" action="#{myBean.printMe()}" />
</h:form>
public void printMe() {
    System.out.println("first line==" + myValue + "==");
    System.out.println("second line==يشسيبشسيبشسيبشيس==");
}
When I run this project and enter يشسيبشسيبشسيبشيس in textbox, in IDE console I see as below.
INFO: first line==????????????????==
INFO: second line==????????????????==
Any idea why this is happening?
解决方案
This is caused by using the wrong console encoding.

The line
System.out.println("My Data is " + fullName);
prints to the standard output (stdout). You need to configure it to use UTF-8 as well. Assuming that you're using Eclipse, then you need to change the stdout encoding to UTF-8 by Window > Preferences > General > Workspace > Text File Encoding.



If you're using Netbeans, which I can't answer from top of head, head to this answer: hebrew appears as question marks in netbeans which contains a link to this Netbeans Wiki which mentions the following:

  
To change the language encoding for a project:

  
Right-click a project node in the Projects windows and choose Properties.
  
Under Sources, select an encoding value from the Encoding drop-down field.
  



See also:


Unicode - How to get the characters right?




Unrelated to the concrete problem, those lines in the filter are unnecessary
    res.setCharacterEncoding("UTF-8");
    res.setContentType("text/html;charset=utf-8");
They defaults in case of JSF2/Facelets to proper values already. Remove those lines.

                        
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