首页 \ 问答 \ 控制MultipleOutputFormat文件子路径(Control the MultipleOutputFormat files sub-path)

控制MultipleOutputFormat文件子路径(Control the MultipleOutputFormat files sub-path)

 我需要根据reducer键控制由MultipleOutputFormat管理的不同不同文件的子路径。  
 我基本上想要根据赋予reducer的密钥设置文件的子路径。  
 我可以通过覆盖MultipleOutputFormat的generateFileNameForKeyValue方法来更改文件名，但是如何更改这些文件的子路径？  
 我的意思是刚刚覆盖generateFileNameForKeyValue，我得到了  
mySetJobConfigOutputPath/fileNameBasedKey1.dat
                        /fileNameBasedKey2.dat
                        /fileNameBasedKey3.dat
                        ...
 
 但我想让它组织如下的文件  
 mySetJobConfigOutputPath/path0ConfiguredInsideReducerBasedOnKey/fileNameBasedKey1.dat

                         /path1ConfiguredInsideReducerBasedOnKey/fileNameBasedKey2.dat
                                                                /fileNameBasedKey3.dat

                         /path2ConfiguredInsideReducerBasedOnKey/fileNameBasedKey8.dat
 
 如图所示，子路径和文件名都由reducer内的键计算出来。  
 我知道如何配置文件名但是想知道我是否可以在mySetJobConfigOutputPath文件夹下配置每个文件的子路径？ 

I need to control the sub-path of the different different files being managed by MultipleOutputFormat based on the reducer key.  
I basically want to set the sub path of the file based on the key given to the reducer.  
I can changed the file name by overwrting the generateFileNameForKeyValue method of MultipleOutputFormatbut how can I also change the sub-path of these files? 
I mean with just overriding the generateFileNameForKeyValue, I get 
mySetJobConfigOutputPath/fileNameBasedKey1.dat
                        /fileNameBasedKey2.dat
                        /fileNameBasedKey3.dat
                        ...
 
but I want to make it to be organize files like below 
 mySetJobConfigOutputPath/path0ConfiguredInsideReducerBasedOnKey/fileNameBasedKey1.dat

                         /path1ConfiguredInsideReducerBasedOnKey/fileNameBasedKey2.dat
                                                                /fileNameBasedKey3.dat

                         /path2ConfiguredInsideReducerBasedOnKey/fileNameBasedKey8.dat
 
as seen, the sub-path and the file name are both figured out by the key inside the reducer.  
I know how to configure the file name but was wondering if I can configure the sub-path of the each file under the mySetJobConfigOutputPath folder?

原文：https://stackoverflow.com/questions/11237797

更新时间：2023-04-27 22:04

最满意答案

 这是因为你的文字已被转义。 escape="false"不会取消文本。 它只是按原样打印文本而不是转义它。 但是，由于您的文字已从头开始转义，因此它以转义形式显示。 删除escape="false" ，你会看到它将被双重转义。 即每一个&成为&amp; 。  
 你需要事先解开它。 Apache Commons Lang StringEscapeUtils可能会派上用场。  
String unescapedShortDescription = StringEscapeUtils.unescapeXml(shortDescription);
 
 然后，您可以使用<h:outputText escape="false">按原样打印它。 

It's because your text is already escaped. The escape="false" doesn't unescape text. It just prints the text as-is instead of escaping it. However, as your text is already escaped from beginning on, it appears in escaped form. Remove the escape="false" and you'll see that it will be double-escaped. I.e. every & becomes &amp;. 
You need to unescape it beforehand. The Apache Commons Lang StringEscapeUtils may come handy.  
String unescapedShortDescription = StringEscapeUtils.unescapeXml(shortDescription);
 
Then, you can use <h:outputText escape="false"> to print it as-is.

控制MultipleOutputFormat文件子路径(Control the MultipleOutputFormat files sub-path)

最满意答案

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