// Create a ResultSetHandler implementation to convert the
// first row into an Object[].
// 创建一个ResultSetHandler 实现，以把第一行转换成一个Object[]
ResultSetHandler<Object[]> h = new ResultSetHandler<Object[]>() {public Object[] handle(ResultSet rs) throws SQLException {if (!rs.next()) {return null;}ResultSetMetaData meta = rs.getMetaData();int cols = meta.getColumnCount();Object[] result = new Object[cols];for (int i = 0; i < cols; i++) {result[i] = rs.getObject(i + 1);}return result;}
};// Create a QueryRunner that will use connections from
// the given DataSource
// 创建一个QueryRunner，它会使用所给DataSource的连接
QueryRunner run = new QueryRunner(dataSource);// Execute the query and get the results back from the handler
// 执行查询并从handler获取结果
Object[] result = run.query("SELECT * FROM Person WHERE name=?", h, "John Doe");

QueryRunner run = new QueryRunner( dataSource );
try
{// Execute the SQL update statement and return the number of// inserts that were made// 执行SQL更新语句，并返回插入的数量？？？int inserts = run.update( "INSERT INTO Person (name,height) VALUES (?,?)", "John Doe", 1.82 );// The line before uses varargs and autoboxing to simplify the code// 上一行使用可变参数和自动装箱以简化代码// Now it's time to rise to the occation...// 现在是时候进入正题了int updates = run.update( "UPDATE Person SET height=? WHERE name=?", 2.05, "John Doe" );// So does the line above// 正如上一行所做
}
catch(SQLException sqle) {// Handle it// 处理它
}

ExecutorCompletionService<Integer> executor = new ExecutorCompletionService<Integer>( Executors.newCachedThreadPool() );
AsyncQueryRunner asyncRun = new AsyncQueryRunner( dataSource );try
{// Create a Callable for the update call// 为update调用创建一个Callable对象Callable<Integer> callable = asyncRun.update( "UPDATE Person SET height=? WHERE name=?", 2.05, "John Doe" );// Submit the Callable to the executor// 向executor提交Callable对象executor.submit( callable );
} catch(SQLException sqle) {// Handle it// 处理它
}// Sometime later (or in another thread)
// 稍后（或在另一个线程之中）
try
{// Get the result of the update// 获取update的结果Integer updates = executor.take().get();
} catch(InterruptedException ie) {// Handle it// 处理异常
}

QueryRunner run = new QueryRunner(dataSource);// Use the BeanHandler implementation to convert the first
// ResultSet row into a Person JavaBean.
// 使用BeanHandler实现以把ResultSet中第一行转换成一个Person JavaBean
ResultSetHandler<Person> h = new BeanHandler<Person>(Person.class);// Execute the SQL statement with one replacement parameter and
// return the results in a new Person object generated by the BeanHandler.
// 执行有一个替代参数的SQL语句，并把返回结果存入由BeanHandler生成的Person对象
Person p = run.query("SELECT * FROM Person WHERE name=?", h, "John Doe");

QueryRunner run = new QueryRunner(dataSource);// Use the BeanHandler implementation to convert the first
// ResultSet row into a Person JavaBean.
// 使用BeanListHandler实现以把所有的结果集行转换成Person JavaBean列表
ResultSetHandler<List<Person>> h = new BeanListHandler<Person>(Person.class);// Execute the SQL statement and return the results in a List of
// Person objects generated by the BeanListHandler.
// 执行SQL语句并返回由BeanListHandler生成的Person对象列表
List<Person> persons = run.query("SELECT * FROM Person", h);