如何判断用户的java代码是否已成功编译？

I have a web app running on a LAMP stack that allows users to write java code into an HTML form, but depending on whether or not that code compiles successfully, I want to do different things.

我有一个在LAMP堆栈上运行的Web应用程序,允许用户将Java代码写入HTML表单,但是根据代码是否成功编译,我想做不同的事情。

The way I have it currently is that the PHP program would generate a .java file using user's input, execute it on the server (I have the security part taken care of), and then check to see if any errors were output.

我目前的方式是PHP程序将使用用户的输入生成.java文件,在服务器上执行它(我有安全部分处理),然后检查是否输出任何错误。

I know that Java prints errors out using the System.err stream, is there a way for me to tell if that output anything to the console? Like a way to listen and distinguish output streams of a program?

我知道Java使用System.err流输出错误,有没有办法让我告诉控制台是否有任何输出?像一种监听和区分程序输出流的方法?

1 个解决方案

#1

You can check the javac exit code. Here is a list of the javac exit code:

您可以查看javac退出代码。以下是javac退出代码的列表:

static final int
    EXIT_OK = 0,        // Compilation completed with no errors.
    EXIT_ERROR = 1,     // Completed but reported errors.
    EXIT_CMDERR = 2,    // Bad command-line arguments
    EXIT_SYSERR = 3,    // System error or resource exhaustion.
    EXIT_ABNORMAL = 4;  // Compiler terminated abnormally

References: http://bugs.java.com/view_bug.do?bug_id=7014715

Since Java 6, you can programmatically call the Java compiler (if provided). See this: ToolProvider#getSystemJavaCompiler

从Java 6开始,您可以以编程方式调用Java编译器(如果提供)。请参阅:ToolProvider#getSystemJavaCompiler

1 个解决方案

#1

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