Question

我写了一个简单的java代码，它将列出Hbase中的所有表。它在日食上运行良好。但是当我将它转换为runnable jar并尝试运行它时，我得到java.lang.ExceptionInInitializerError异常。

以下是我的java代码

import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.client.*;


public class ListTables {
    public static void main(String[] args) throws IOException {
        System.out.println(System.getProperty("java.version"));
        System.out.println();
        System.out.flush();
        Configuration conf= HBaseConfiguration.create();
        Connection conn= ConnectionFactory.createConnection(conf);
        Admin admin= conn.getAdmin();
        HTableDescriptor tableDes[]= admin.listTables();
        for(HTableDescriptor td : tableDes) {
            System.out.print(td.getNameAsString() + " : ");
            for(HColumnDescriptor cd : td.getColumnFamilies())
                System.out.print(cd.getNameAsString() + ", ");
            System.out.println();
        }
    }
}

我在将Jar转换为runnable jar后运行Jar时遇到异常

Exception in thread "main" java.lang.ExceptionInInitializerError
    at org.apache.hadoop.util.StringUtils.<clinit>(StringUtils.java:78)
    at org.apache.hadoop.security.Groups.parseStaticMapping(Groups.java:93)
    at org.apache.hadoop.security.Groups.<init>(Groups.java:77)
    at org.apache.hadoop.security.Groups.getUserToGroupsMappingService(Groups.java:240)
    at org.apache.hadoop.security.Groups.getUserToGroupsMappingService(Groups.java:225)
    at org.apache.hadoop.hbase.security.UserProvider.<clinit>(UserProvider.java:56)
    at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:214)
    at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:119)
    at ListTables.main(ListTables.java:14)
Caused by: java.lang.StringIndexOutOfBoundsException: begin 0, end 3, length 1
    at java.base/java.lang.String.checkBoundsBeginEnd(String.java:3116)
    at java.base/java.lang.String.substring(String.java:1885)
    at org.apache.hadoop.util.Shell.<clinit>(Shell.java:49)
    ... 9 more

任何人都可以告诉我们将这些类型的代码转换为可运行的Jar的正确方法是什么......

Answer 1

挖掘源代码，您可以发现Shell类中的这种情况失败

  private static boolean IS_JAVA7_OR_ABOVE =
      System.getProperty("java.version").substring(0, 3).compareTo("1.7") >= 0;

检查您的java.version系统属性，也可以在代码中设置

将Hbase程序转换为可运行的jar

1 个答案: