[翻译]  Checkstyle: How to Resolve “Hidden Field” Error

[CHINESE]  Checkstyle:如何解决“隐藏字段”错误


I am getting this checkstyle error:

我收到这个checkstyle错误:

'serverURL' hides a field

in this

在这

 private static void setServerURL(final String serverURL) {
    Utility.serverURL = serverURL;
 }

What could be the reason, and how to resolve it?

可能是什么原因,以及如何解决它?

5 个解决方案

#1


38  

There is already a variable defined serverURL which is available to this method (additional to the formal parameter you are accepting). This is called "shadowing".

已经有一个变量定义的serverURL可用于此方法(除了您接受的形式参数之外)。这被称为“阴影”。

I think most Java programmers turn this check off, because it's not really that confusing.

我认为大多数Java程序员都会关闭这个检查,因为它并不是那么令人困惑。

For example, this would trigger the error:

例如,这会触发错误:

public class Foo {
  private int bar = 0;

  public void someMethod(int bar) {
    // There are two bars!  All references in this method will use the parameter bar,
    // unless they are explicitly prefixed with 'this'.
    this.bar = bar;
  }
}

#2


29  

I think it is very common in constructors and setters that the set field name is the same as the setter parameter name. This is why i recommend this configuration:

我认为在构造函数和setter中,set字段名称与setter参数名称相同是很常见的。这就是我推荐这种配置的原因:

<module name="HiddenField" >
    <property name="ignoreSetter" value="true" />
    <property name="ignoreConstructorParameter" value="true" />
</module>

This way the other hidden field cases are still forbidden.

这样,其他隐藏的野外案件仍然是被禁止的。

#3


7  

I resolved it by disabling it in eclipse. I was looking for how to do that when I landed on this page. I didn't find the answer in top 10 google query so I had to figure it out the hard way. For someone who is looking for that, here is how I did it:

我通过在eclipse中禁用它来解决它。当我登陆这个页面时,我一直在寻找如何做到这一点。我没有在前10个谷歌查询中找到答案,所以我不得不弄清楚这个问题。对于正在寻找它的人来说,我就是这样做的:

Open

打开

Eclipse>Preferences>Checkstyle

Eclipse的>首选项>的Checkstyle

Find the checkstyle configuration you are using (you might have set that or your are using default in which case its a better idea to create a copy of your own and then edit that). Select that and then click the configure button on the right side. Find the following config in the list:

找到您正在使用的checkstyle配置(您可能已设置或正在使用默认设置,在这种情况下,最好创建自己的副本然后进行编辑)。选择该选项,然后单击右侧的配置按钮。在列表中找到以下配置:

Coding Problems>Hidden Field

编码问题>隐藏字段

Open the configuration (there is button called 'open' in the UI).

打开配置(UI中有一个名为“open”的按钮)。

Unselect 'Parameter Declaration'. Click OK then Click OK and then Click OK.

取消选择“参数声明”。单击OK然后单击OK,然后单击OK。

#4


6  

The parameter and the static field have the same name. Just rename one of them. Some people follow a naming convention that prefixes all parameters with p. Then you would have serverURL as field name and pServerURL as parameter name. Or you could simply turn off the check.

参数和静态字段具有相同的名称。只需重命名其中一个。有些人遵循命名约定,该约定用p作为所有参数的前缀。然后,您将serverURL作为字段名称,将pServerURL作为参数名称。或者你可以简单地关掉支票。

#5


3  

Just change ur param name in ur method

只需在ur方法中更改ur param名称即可

private static void setServerURL(final String serverURL) {
Utility.serverURL = serverURL;
}

to

private static void setServerURL(final String serverURLXYZ) {
Utility.serverURL = serverURLXYZ;
}

Enjoy...

请享用...

Jigar Patel

Jigar Patel


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