如何在Java中再次抛出IOException? [英] How to throw again IOException in java?

问题描述

代码:

 catch (IOException e) {
        LOGGER.error("IOException exception happened");
        //now need throw again the same exception to be 
                       //catched in    the    upper method
    }

但是当我尝试简单地:

  catch (IOException e) {
        LOGGER.error("IOException exception happened");
        //now need throw again the same exception to be 
                       //catched in    the    upper method
               throw e;
    }

Eclipse想让我在try catch块中放入"throw e".但这是胡说八道. 如何解决这个问题? 谢谢.

Eclipse supposes to me put "throw e" in try catch block. But this is nonsense. How fix this problem? Thanks.

推荐答案

自 IOException 是已检查的异常，该方法需要声明为throwing IOException(如果要传播).例如:

Since IOException is a checked exception, that method needs to be declared as throwing IOException if you want it to propagate. For example:

void myMethod() throws IOException {
    try {
        //code
    }
    catch(IOException e) {
        LOGGER.error("IOException exception happened");
        throw e;
    }
}

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