Question

我想在java中读取.rc文件并将其内容存储在hashmap中。 .rc ext文件是C / C ++中使用的资源文件，我想用java开发应用程序。请帮忙。在此先感谢。

public static void main(String[] args){
        try                                                                                                                                     
        {    
            JobConf job = new JobConf(new Configuration(), Application.class);
            FileSystem fs = FileSystem.get(job);                                                                                         
            FileStatus [] fileStatuses = fs.listStatus(new Path("C:/Users/Desktop/fold/"));                               
            LongWritable key = new LongWritable();                                                                                       
            BytesRefArrayWritable value = new BytesRefArrayWritable();                                                                   
            int counter = 1;                                                                                                             
            for (int i = 0; i < fileStatuses.length; i++)                                                                                
            {                                                                                                                            
                FileStatus fileStatus = fileStatuses[i];                                                                                 
                if (!fileStatus.isDir())                                                                                                 
                {                                                                                                                        
                    System.out.println("File: " + fileStatus);                                                                           
                    FileSplit split = new FileSplit(fileStatus.getPath(), 0, fileStatus.getLen(), job);                                  
                    RCFileRecordReader reader = new RCFileRecordReader(job, split);                                                      
                    while (reader.next(key, value))                                                                                      
                    {                                                                                                                    
                        System.out.println("Getting row " + counter);                                                                                                                                                                                                                          
                        counter++;                                                                                                       
                    }                                                                                                                    
                }                                                                                                                        
            }                                                                                                                                                                                                                                                         
        }                                                                                                                                
        catch (IOException e)                                                                                                            
        {                                                                                                                                
            throw new Error(e);                                                                                                          
        }
    }

它给了我例外：

线程“main”中的异常java.lang.Error：java.io.IOException： file：/ C：/Users/Desktop/fold/xyz.rc不是RCFile并且具有I01的魔力在Application.main（Application.java:119）引起： java.io.IOException：file：/ C：/Users/Desktop/fold/xyz.rc不是RCFile 并拥有I01的魔力 org.apache.hadoop.hive.ql.io.RCFile $ Reader.init（RCFile.java:1269）at at org.apache.hadoop.hive.ql.io.RCFile $读者。（RCFile.java:1154）在 org.apache.hadoop.hive.ql.io.RCFile $读者。（RCFile.java:1133）在 org.apache.hadoop.hive.ql.io.RCFileRecordReader。（RCFileRecordReader.java:102）在Application.main（Application.java:106）

请帮忙

Answer 1

FileInputStream inputStream = new FileInputStream("C:/Users/Desktop/fold/xyz.rc");
try {
    String str = IOUtils.toString(inputStream);
    System.out.println(str);
} finally {
    inputStream.close();
}

如何在java中读取.rc扩展文件

1 个答案: