使用DBUtils操作数据库

在oschina.net上看到了DBUtils项目，看介绍挺简单的，就准备尝试一下。
api确实非常简单，用起来很方便。

// Create a ResultSetHandler implementation to convert the
// first row into an 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
QueryRunner run = new QueryRunner(dataSource);

// Execute the query and get the results back from the handler
Object[] result = run.query(
    "SELECT * FROM Person WHERE name=?", h, "John Doe");

ResultSetHandler<Object[]> h = ... // Define a handler the same as above example

// No DataSource so we must handle Connections manually
QueryRunner run = new QueryRunner();

Connection conn = ... // open a connection
try{
    Object[] result = run.query(
        conn, "SELECT * FROM Person WHERE name=?", h, "John Doe");
	// do something with the result
	
} finally {
    // Use this helper method so we don't have to check for null
    DbUtils.close(conn);  
}

QueryRunner run = new QueryRunner( dataSource );
try
{
    // Execute the SQL update statement and return the number of
    // inserts that were made
    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

    // Now it's time to rise to the occation...
    int updates = run.update( "UPDATE Person SET height=? WHERE name=?",
                              2.05, "John Doe" );
    // So does the line above
}
catch(SQLException sqle) {
    // Handle it
}

遇到的问题：
用的时候发现，在做insert操作的时候报：
Exception in thread "Main Thread" java.sql.SQLException: Feature not implemented Query: insert into test (name) values (?) Parameters: [test0]
at org.apache.commons.dbutils.QueryRunner.rethrow(QueryRunner.java:542)
at org.apache.commons.dbutils.QueryRunner.update(QueryRunner.java:599)
at org.apache.commons.dbutils.QueryRunner.update(QueryRunner.java:575)
at com.allyes.icontext.fetcher.Test.main(Test.java:71)

后来发现原来是驱动的版本不对，开始用的3.1，改成5.1的就ok了。

以后直接需要操作jdbc的就用DBUtils就方便多了！