javaJDBC(3)-获取主键、调用存储过程

说明：这里接上篇，使用前面总结的jdbcutil.java实现获取主键与调用存储过程

获取主键：

package cn.itcast.jdbc;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import org.junit.Test;

import cn.itcast.util.JdbcUtil;

public class GetDBGenKeyDemo {

/**

* @param args

*/

@Test

public void test() {

Connection conn = null;

PreparedStatement stmt = null;

ResultSet rs = null;

try{

conn = JdbcUtil.getConnection();

stmt = conn.prepareStatement("insert into t1 (name) values(?)");

stmt.setString(1, "jh");

stmt.executeUpdate();

//以下获取生成的主键

rs = stmt.getGeneratedKeys();

if(rs.next()){

System.out.print(rs.getInt(1));

//System.out.println(rs.getInt(2));

}

}catch(Exception e){

e.printStackTrace();

}finally{

JdbcUtil.release(rs, stmt, conn);

}

}

}

调用存储方法：

package cn.itcast.jdbc;

import java.sql.CallableStatement;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.Types;

import org.junit.Test;

import cn.itcast.util.JdbcUtil;

/*这里的内容在数据库内执行

delimiter $$

CREATE PROCEDURE demoSp(IN inputParam VARCHAR(255),INOUT inOutParam VARCHAR(255))

BEGIN

SELECT CONCAT('welcom---',inputParam) into inOutParam;

END $$

delimiter ;

*/

//如何调用存储过程

public class InvokeProcedureDemo {

@Test

public void test() {

// TODO Auto-generated method stub

Connection conn = null;

CallableStatement stmt = null;

ResultSet rs = null;

try{

conn = JdbcUtil.getConnection();

stmt = conn.prepareCall("{call demoSp(?,?)}");

stmt.setString(1, "to qingdao");

stmt.registerOutParameter(2,Types.VARCHAR);

stmt.execute();

String value = stmt.getString(2);

System.out.println(value);

}catch(Exception e){

e.printStackTrace();

}finally{

JdbcUtil.release(rs, stmt, conn);

}

}

}