设置Maven Java编译器debug为false不删除行号表？ [英] Setting Maven Java compiler debug to false does not remove line number table?

问题描述

也许这是我缺乏理解，但我会假设这样做在一个Maven Java项目将禁用所有调试信息进入类文件：

 < plugin> 
< groupId> org.apache.maven.plugins< / groupId> 
< artifactId> maven-compiler-plugin< / artifactId> 
< configuration> 
< debug> false< / debug> 
< / configuration> 
< / plugin> 
  

但是，我只是测试它，并且当局部变量表不见了，去了，行号表仍然存在。我做了一个 javap -l MyClass ，仍然有像：

  protected com.mycorp.myapp.randomMethod（）; 
 LineNumberTable：
 line 197：0 
 line 68：4 
 line 69：9 
 line 70：14 
 line 198：19 
  

显然，这些东西还在里面....我想。

解决方案

这看起来像是 MCOMPILER-114 。使用以下似乎与插件的版本2.3.2工作：

 < plugin& 
< groupId> org.apache.maven.plugins< / groupId> 
< artifactId> maven-compiler-plugin< / artifactId> 
< version> 2.3.2< / version> 
< configuration> 
< debug> true< / debug> 
< debuglevel> none< / debuglevel> 
< / configuration> 
< / plugin> 
  

（是啊，我知道，这不是文档说的， / p>

Perhaps this is my lack of understanding, but I would have assumed that doing this in a Maven Java project would disable all debug info from going into the Class file:

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <debug>false</debug>
                </configuration>
            </plugin>

However, I just tested it and while the local variable table is gone, and the source file reference is gone, the line number table is still present. I did a javap -l MyClass and still got things like:

protected com.mycorp.myapp.randomMethod();
  LineNumberTable: 
   line 197: 0
   line 68: 4
   line 69: 9
   line 70: 14
   line 198: 19

Clearly, the stuff is still in there....I think.

解决方案

This looks like MCOMPILER-114. Using the following seems to work with the version 2.3.2 of the plugin:

  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>2.3.2</version>
    <configuration>
      <debug>true</debug>
      <debuglevel>none</debuglevel>
    </configuration>
  </plugin>

(yeah, I know, that's not what the documentation is saying, but well, it works)

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