java获取未报告的异常

nwlqm0z1 于 2021-06-02 发布在 Hadoop

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public void createDirectory(String path) {
        try {
            shellSupport.executeCommand("hadoop fs -mkdir "+path);
            logger.info("Directory "+path+" created successfully");
        } catch(Exception exc) {
            throw exc;
        }
    }

错误
错误：未报告的异常；必须被抓住或宣布被扔出去
如果我删除try-catch，那么代码会编译，logger会显示消息，但不会创建目录。

Java hadoop Exception exception-handling

来源：https://stackoverflow.com/questions/40017310/java-getting-unreported-exception

2条答案

按热度按时间

i1icjdpr1#

仅仅加上：

public void createDirectory(String path) throws Exception {
    try {
        shellSupport.executeCommand("hadoop fs -mkdir "+path);
        logger.info("Directory "+path+" created successfully");
    } catch(Exception exc) {
        throw exc;
    }
}

即： public void createDirectory(String path) throws Exception 你的方法？

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qqrboqgw2#

如果要抛出异常，必须在方法签名中声明它。对你来说那就是

public void createDirectory(String path) throws Exception

或者你不用扔就可以抓住它

try {
    shellSupport.executeCommand("hadoop fs -mkdir "+path);
    logger.info("Directory "+path+" created successfully");
} catch(Exception exc) {
    exc.printStackTrace();
    // handle your exception
}

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java获取未报告的异常

2条答案

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