“在模块java.xml.ws中声明包javax.xml.soap，该模块不在模块图中" [英] "package javax.xml.soap is declared in module java.xml.ws, which is not in the module graph"

问题描述

因此，我在 Working Soap客户端示例中使用了SOAP示例，将该文件放入文件SOAPClientSAAJ.java，并尝试将其编译(在Debian上为Openjdk 9):

So I took the SOAP example at Working Soap client example , put it into a file SOAPClientSAAJ.java, and tried compiling it (Openjdk 9 on Debian):

t@h ~/javatest> javac SOAPClientSAAJ.java 
SOAPClientSAAJ.java:1: error: package javax.xml.soap is not visible
import javax.xml.soap.*;
                ^
  (package javax.xml.soap is declared in module java.xml.ws, which is not in the module graph)
1 error

在搜索了一些内容之后，我发现编译和运行方式为

After Googling some, I found out that compiling and running as

t@h ~/javatest> javac --add-modules java.xml.ws SOAPClientSAAJ.java
t@h ~/javatest> java --add-modules java.xml.ws SOAPClientSAAJ

有效.另请参见此视频的一般背景: https://www.youtube.com/watch ?v = y8bpKYDrF5I& t = 20m17s

works. See also this video for general background: https://www.youtube.com/watch?v=y8bpKYDrF5I&t=20m17s

现在，问题:

1. 编译器是否应自动添加模块java.xml.ws? (因为它显然知道它是必需的).这是javax.xml.soap中的错误吗?
2. 为什么--add-modules选项未记录在我的手册页中? (Debian中的openjdk 9)
3. 我应该在.java文件中写些什么来自动添加java.xml.ws模块?

推荐答案

这是实际上是Java EE软件包，依此类推现在不可见.当前的解决方法是使用--add-modules，或者使用

This is a result of the new Java 9 modules. The javax.xml.soap package is actually a Java EE package, and so now isn't visible. The current workaround is to either use the --add-modules, as you've done, or to modularize your code.

模块化代码需要将其重组为模块，并包括一个module-info.java文件，该文件指定您正在使用的模块.在您的情况下，指定java.se.ee可以访问所有EE模块.

Modularizing your code requires restructuring it into modules, and including a module-info.java file that specifies the modules you're using. In your case, specifying java.se.ee would give access to all the EE modules.

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