java调用sqoop api用法

java调用sqoop有两种用法，一是使用sqoop java api，二是使用runtime调用sqoop命令，但runtime比较难用，不推荐，以下是两种使用sqoop Java api的方法。

方法一、使用String[]传参（不推荐）
代码如下，但经过本人测试，同时调用多个sqoop任务会出现传参不能识别报错

    public static void main(String[] args) throws IOException {
        System.setProperty("HADOOP_USER_NAME","xxx");
        System.out.println(" begin test sqoop");
        String[] argument = new String[] {

                "--username","xxx",
                "--password","xxx",
                "--num-mappers","1",
                "--query","select * from (select rownum as rn,r.* from RP_SCALE r ) where rn>=1 and rn<=1000 and  $CONDITIONS",
                "--fields-terminated-by","\001",
                "--target-dir","/data/hive/warehouse/ods_cmis.db/ods_rp_scale_view",
                "--delete-target-dir",
                "--connect","jdbc:oracle:thin:@xxx:1521:coresit",
        };
        SqoopTool sqoopTool= SqoopTool.getTool("import");
        Configuration conf= new Configuration();
        conf.set("fs.defaultFS","hdfs://xxx:8020");
        Sqoop sqoop = new Sqoop(sqoopTool,SqoopTool.loadPlugins(conf));
        Sqoop.runSqoop(sqoop,argument);
    }

方法二、使用SqoopOptions对象传参（推荐）

                SqoopTool sqoopTool = SqoopTool.getTool("import");
                SqoopOptions sqoopOptions = new SqoopOptions();
				sqoopOptions.setConnectString("xxx");
 				sqoopOptions.setUsername("xxx");
                sqoopOptions.setPassword("xxx");
                sqoopOptions.setNumMappers(1);
                sqoopOptions.setNullStringValue("\\\\N");
                sqoopOptions.setNullNonStringValue("\\\\N");
                sqoopOptions.setFieldsTerminatedBy('\001');
                sqoopOptions.setTargetDir("/data/hive/warehouse/ods_cmis.db/ods_" + hiveTableName.toLowerCase());
                sqoopOptions.setCodeOutputDir("sqoopjavafile");
                sqoopOptions.setJarOutputDir("sqoopcompilefile/" + CommonUtil.getUUID() + "/");
                sqoopOptions.setHiveDropDelims(true);
                sqoopOptions.setSqlQuery(querySql);
                sqoopOptions.setAppendMode(true);
                sqoopOptions.setClassName(hiveTableName + CommonUtil.getUUID());
               sqoopOptions.setSqlQuery(querySql);
                sqoopOptions.setAppendMode(true);
                sqoopOptions.setClassName(hiveTableName + CommonUtil.getUUID());
                        Configuration conf= new Configuration();
        conf.set("fs.defaultFS","hdfs://xxx:8020");
                                Sqoop sqoop = new Sqoop(sqoopTool, SqoopTool.loadPlugins(conf), sqoopOptions);
                Sqoop.runSqoop(sqoop, new String[]{});

java api调用sqoop还有一些异常，处理方法见：
https://blog.csdn.net/qq_23146763/article/details/107107358