批量插入jdbc的异常

Question

我正在尝试从特定文件夹中读取csv文件中的数据，并根据第一个参数将数据插入表中。数据库是postgres。但我得到java.sql.BatchUpdateException。有人可以帮帮我吗以下是我的代码。

public class IOReader {
Connection con;
static PreparedStatement statement= null;
String url, user, password= null;

public IOReader() throws IOException {
     url = Config.DB_URL2;
     user= Config.DB_USERNAME2;
     password= Config.DB_PASSWORD2;
}
public  void insert() throws SQLException
{
    File dir = new File("C:\\Users\\Desktop\\data");
    String currentLine;
    con= DriverManager.getConnection(url, user, password);
    con.setAutoCommit(false);
    String query_s = "INSERT INTO Vehicle"
            + "(vehicle_id, vehicle_timestamp, message_id," +
            "begin_timestamp,recd_timestamp," +
            "model) VALUES (?,?,?,?,?,?)";
    try {
        statement= con.prepareStatement(query_s);
        con.setAutoCommit(false);
        final int batchSize =1000;
        int count=0;
        if (!dir.isDirectory())
        throw new IllegalStateException();
        for (File file : dir.listFiles()) {
        BufferedReader br;
        try {
            br = new BufferedReader(new FileReader(file));
            while ((currentLine = br.readLine()) != null) {
                if(currentLine.contains(",")){
                List<String> values = Arrays.asList(currentLine.split(","));
                 if(values.get(0).contentEquals("AAA")){
                    dbSave(values, con);
                }
                }
            }
        } catch (FileNotFoundException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        if(++count % batchSize ==0){
            statement.executeBatch();
        }
    }
    statement.executeBatch();
    con.commit();
    } catch (SQLException e) {
        e.printStackTrace(); 
        System.out.println(e.getMessage());
        con.rollback();
    } finally {
        if (statement != null) {
            statement.close();
        }
        if (con != null) {
            con.close();
        }
    }
}
private void dbSave(List<String> values, Connection connection) throws SQLException {
    try {
        statement.setString(1, values.get(0));
        statement.setLong(2, Long.valueOf(values.get(1)));
        statement.setInt(3, Integer.valueOf(values.get(2)));
        statement.setLong(4, Long.valueOf(values.get(3)));
        statement.setLong(5, Long.valueOf(values.get(4)));
        statement.setString(6,values.get(5));
        statement.addBatch();
    } catch (SQLException e) {
        e.printStackTrace();
        System.out.println("Could not save to DB, error: " + e.getMessage());
    }
}

}

我得到的例外是：

 java.sql.BatchUpdateException Caused by: java.sql.BatchUpdateException: Batch entry14.170 INSERT INTO Vehicle(vehicle_id, vehicle_timestamp, message_id,begin_timestamp,recd_timestamp,model) VALUES ('AAA','1370253541234','190049','1753891','1753891','PPP') was aborted.  Call getNextException to see the cause.


java.sql.BatchUpdateException: Batch-Eintrag 14.170 INSERT INTO Vehicle(vehicle_id, vehicle_timestamp, message_id,begin_timestamp,recd_timestamp,model) VALUES ('AAA','1370253541234','190049','1753891','1753891','PPP') wurde abgebrochen.  Rufen Sie 'getNextException' auf, um die Ursache zu erfahren.
Execution successful
    at org.postgresql.jdbc2.AbstractJdbc2Statement.executeBatch(AbstractJdbc2Statement.java:2754)
    at src.io.IOReader.readSave(IOReader.java:151)
    at src.startup.Initiator.main(Initiator.java:40)

我的表格结构如下：

Table Vehicle
vehicle_id character varying NOT NULL,
vehicle_timestamp bigint NOT NULL,
message_id integer NOT NULL,
begin_timestamp bigint NOT NULL,
recd_timestamp bigint NOT NULL,
model character varying NOT NULL)
primary key: vehicle_timestamp,vehicle_id