在此 Python 进程中找不到“java”命令。请确保已安装 Java 并为 \`java\` 设置了 PATH

Question

当我尝试运行以下代码时，我不知道如何修复此错误：

 df = wrapper.read_pdf(r'C:\End_to_End\1902\PN\Scenario1_AllCorrectMin\EPR.pdf')

日志：

 FileNotFoundError                         Traceback (most recent call last)
~\AppData\Local\Continuum\anaconda3\lib\site-packages\tabula\wrapper.py in read_pdf(input_path, output_format, encoding, java_options, pandas_options, multiple_tables, **kwargs)
    107     try:
--> 108         output = subprocess.check_output(args)
    109

~\AppData\Local\Continuum\anaconda3\lib\subprocess.py in check_output(timeout, *popenargs, **kwargs)
    335     return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
--> 336                **kwargs).stdout
    337

~\AppData\Local\Continuum\anaconda3\lib\subprocess.py in run(input, timeout, check, *popenargs, **kwargs)
    402
--> 403     with Popen(*popenargs, **kwargs) as process:
    404         try:

~\AppData\Local\Continuum\anaconda3\lib\subprocess.py in __init__(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags, restore_signals, start_new_session, pass_fds, encoding, errors)
    708                                 errread, errwrite,
--> 709                                 restore_signals, start_new_session)
    710         except:

~\AppData\Local\Continuum\anaconda3\lib\subprocess.py in _execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, unused_restore_signals, unused_start_new_session)
    996                                          os.fspath(cwd) if cwd is not None else None,
--> 997                                          startupinfo)
    998             finally:

FileNotFoundError: [WinError 2] The system cannot find the file specified

During handling of the above exception, another exception occurred:

JavaNotFoundError                         Traceback (most recent call last)
<ipython-input-3-010e34a004ec> in <module>()
----> 1 df = wrapper.read_pdf(r'C:\End_to_End\1902\PN\Scenario1_AllCorrectMin\EPR.pdf')

~\AppData\Local\Continuum\anaconda3\lib\site-packages\tabula\wrapper.py in read_pdf(input_path, output_format, encoding, java_options, pandas_options, multiple_tables, **kwargs)
    109
    110     except FileNotFoundError as e:
--> 111         raise JavaNotFoundError(JAVA_NOT_FOUND_ERROR)
    112
    113     except subprocess.CalledProcessError as e:

JavaNotFoundError: `java` command is not found from this Python process. Please ensure Java is installed and PATH is set for `java`

我尝试在环境变量中更改和创建路径，但没有成功。这是屏幕截图：

有谁知道如何解决这一问题？我有 java 版本 8（通过 java 检查）

原文由 Ryan Ni 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

在 System Variables 点击 Path 然后按 Edit... 代替 New 然后在下一个屏幕中（ Edit environment variable 路径变量）单击 New 并添加地址，例如 C:\Program Files (x86)\Java\jre1.8.0_201\bin 按 OK 将附加/更新 Path 变量。

您将需要重新启动您的环境（例如 Chrome、Anaconda 等）以使路径生效。

原文由 geo s 发布，翻译遵循 CC BY-SA 4.0 许可协议