Solution to Java database insertion exception (DatabaseInsertException)

Solution to Java database insertion exception (DatabaseInsertException)

In the Java development process, the database is often used for data insertion operations. However, sometimes exceptions occur when performing insert operations, such as DatabaseInsertException. This exception is usually caused by data insertion rules or database connection problems. This article describes some common solutions and provides corresponding code examples.

Solution 1: Check the database connection
First, we need to ensure that the database connection is normal. Before inserting data, we need to add verification of the database connection in the code. If the database connection is not available, we can manually open or reinitialize the connection. The following is a simple example:

Connection connection = null;
try {
    // 获取数据库连接
    connection = getConnection();

    // 执行插入操作
    insertData(connection, data);
} catch (SQLException e) {
    // 处理异常
    e.printStackTrace();
} finally {
    // 关闭数据库连接
    closeConnection(connection);
}

Solution 2: Check the rules for inserting data
Sometimes, the rules for inserting data may cause exceptions. For example, if a unique constraint is defined on a column in the table, if the inserted data already exists, a DatabaseInsertException will be thrown. The solution is to check whether the same data already exists in the database before inserting. The following is an example:

String sql = "SELECT count(*) FROM table_name WHERE column_name = ?";
PreparedStatement statement = connection.prepareStatement(sql);
statement.setString(1, data);

ResultSet resultSet = statement.executeQuery();
resultSet.next();
int count = resultSet.getInt(1);
if (count > 0) {
    // 数据已存在，执行相应的处理逻辑
} else {
    // 执行插入操作
    insertData(connection, data);
}

Solution 3: Use transaction processing
In some cases, multiple insert operations need to be submitted at the same time. If one of the operations fails, the entire operation needs to be rolled back. At this time, we can use transactions to process. The following is an example:

Connection connection = null;
try {
    // 获取数据库连接
    connection = getConnection();

    // 开启事务
    connection.setAutoCommit(false);

    // 执行多个插入操作
    insertData1(connection, data1);
    insertData2(connection, data2);
    insertData3(connection, data3);

    // 提交事务
    connection.commit();
} catch (SQLException e) {
    // 回滚事务
    connection.rollback();

    // 处理异常
    e.printStackTrace();
} finally {
    // 关闭数据库连接
    closeConnection(connection);
}

With the above three solutions, we can better handle Java database insertion exceptions (DatabaseInsertException). In actual development, we can choose the appropriate solution according to the specific situation. At the same time, we must also make full use of the exception handling mechanism to properly capture and handle exceptions to ensure the normal operation of the program.

To summarize, methods to solve Java database insertion exceptions include checking the database connection, checking the rules for inserting data, and using transaction processing. Through effective exception handling and reasonable code design, we can better respond to abnormal situations and improve the stability and reliability of the program.

(Note: The above sample code is for demonstration purposes only, please modify and adjust it according to the actual situation.)

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