如何将 UUID 插入 RAW(16) 列 [英] How to insert UUID into RAW(16) column

问题描述

我在 Oracle 中有 RAW(16) PK 列，并尝试使用 JDBC 将其插入:

I have the RAW(16) PK column in Oracle, and trying to insert into it using JDBC:

        PreparedStatement stmt = connection.prepareStatement("insert into COUNTRY (id, state, version, code, name, nationality, issuing_entity, country) values (?, ?, ?, ?, ?, ?, ?, ?)");
        UUID id = UUID.randomUUID();
        stmt.setObject(1, id, Types.BINARY);

但是，我遇到了一个例外:

However, I am getting an exception:

java.sql.SQLException: Invalid column type
at oracle.jdbc.driver.OraclePreparedStatement.setObjectCritical(OraclePreparedStatement.java:8494)
at oracle.jdbc.driver.OraclePreparedStatement.setObjectInternal(OraclePreparedStatement.java:7995)
at oracle.jdbc.driver.OraclePreparedStatement.setObject(OraclePreparedStatement.java:8559)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.setObject(OraclePreparedStatementWrapper.java:225)
at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.setObject(HikariProxyPreparedStatement.java)
at rw.gov.dgie.framework.test.AbstractTestCaseWithDB.tryToInsertCountry(AbstractTestCaseWithDB.java:78)
at rw.gov.dgie.framework.test.AbstractTestCaseWithDB.dbSetup(AbstractTestCaseWithDB.java:62)
at test.rw.gov.dgie.bms.terr.service.TestCountryService.init(TestCountryService.java:37)

我在尝试使用 DbSetup 插入测试数据时遇到相同的异常.

I am getting the same exception when trying to use DbSetup for inserting test data.

有没有办法让 JDBC 将 UUID 插入到 RAW(16) 列中?

Is there a way to make JDBC insert UUIDs into RAW(16) column?

我使用的是 Oracle JDBC 12.2.0.1.0.

I am using Oracle JDBC 12.2.0.1.0.

推荐答案

您必须将 UUID 转换为字节数组.请参阅方法 asBytes 如何做吧.

You must convert the UUID to a byte array. See the method asBytes how to do it.

在它之后，绑定就像使用 setBytes 一样简单.

After it the binding is a s simple as using setBytes.

示例

def stmt = con.prepareStatement("insert into TAB_UUID (id, uuid) values (?,?)") 
// bind
stmt.setInt(1,1)
def uuid = UUID.randomUUID()
stmt.setBytes(2,asBytes(uuid)) 
def rowCount = stmt.executeUpdate()

这里只是以防万一链接不起作用 UUID 到字节数组的转换方法

Here just for case the link doesn't work the conversion method UUID to byte array

  public static byte[] asBytes(UUID uuid) {
    ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return bb.array();
  }

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