{"id":135,"date":"2018-06-25T10:37:43","date_gmt":"2018-06-25T02:37:43","guid":{"rendered":"http:\/\/chenhaitao.me\/?p=135"},"modified":"2018-06-25T10:37:43","modified_gmt":"2018-06-25T02:37:43","slug":"%e5%b8%a6%e4%ba%8b%e5%8a%a1%e7%9a%84queryrunner","status":"publish","type":"post","link":"https:\/\/chenhaitao.com\/.wp-toolkit_I\/2018\/06\/25\/%e5%b8%a6%e4%ba%8b%e5%8a%a1%e7%9a%84queryrunner\/","title":{"rendered":"\u5e26\u4e8b\u52a1\u7684QueryRunner"},"content":{"rendered":"

DBUtils\u7b80\u5316\u4e86\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\uff0c\u518d\u52a0\u4e0a\u6211\u4eec\u4e0a\u4e00\u8282\u8bb2\u7684JdbcUtils\uff0c\u4e24\u8005\u914d\u5408\u8d77\u6765\u7528\uff0c\u4e5f\u662f\u975e\u5e38\u65b9\u4fbf\uff0c\u4f46\u662f\u64cd\u4f5c\u5728\u64cd\u4f5c\u4e8b\u52a1\u65f6\uff0c\u4e5f\u4f1a\u4ea7\u751f\u4e00\u4e9b\u5197\u4f59\u7684\u4ee3\u7801\u3002\u4ee3\u7801\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n

Jdbcutils<\/p>\n

package cn.ccnu.jdbc;<\/p>\n

import java.sql.Connection;
\nimport java.sql.SQLException;<\/p>\n

import javax.sql.DataSource;
\nimport com.mchange.v2.c3p0.ComboPooledDataSource;<\/p>\n

public class JdbcUtils {
\n\/\/\u901a\u8fc7c3p0\u8fde\u63a5\u6c60\u5f97\u5230DataSource
\nprivate static DataSource ds = new ComboPooledDataSource();
\n\/\/\u5b9a\u4e49\u4e00\u4e2aConnection\u6765\u5224\u65ad\u662f\u5426\u6709\u4e8b\u52a1
\nprivate static Connection con = null;
\n\/\/\u8fd4\u56deDataSource
\npublic static DataSource getDataSource(){
\nreturn ds;
\n}<\/p>\n

\/\/\u901a\u8fc7DataSource\u5f97\u5230Connection
\npublic static Connection getConnection() throws SQLException{
\n\/\/\u5982\u679c\u5f00\u542f\u4e86\u4e8b\u52a1\uff0c\u5219con\u4e0d\u4e3a\u7a7a\uff0c\u5e94\u8be5\u76f4\u63a5\u8fd4\u56decon
\nif(con != null){
\nreturn con;
\n}
\nreturn ds.getConnection();
\n}<\/p>\n

\/\/ \u5f00\u542f\u4e8b\u52a1
\npublic static void beginTransaction() throws SQLException {
\n\/\/\u5224\u65adcon\u662f\u5426\u4e3a\u7a7a\uff0c\u5982\u679c\u4e0d\u4e3a\u7a7a\uff0c\u5219\u8bf4\u660e\u4e8b\u52a1\u5df2\u7ecf\u5f00\u542f
\nif(con != null){
\nthrow new SQLException(“\u4e8b\u52a1\u5df2\u7ecf\u5f00\u542f\u4e86,\u4e0d\u80fd\u91cd\u590d\u5f00\u542f\u4e8b\u52a1”);
\n}
\n\/\/\u5982\u679c\u4e0d\u4e3a\u7a7a\uff0c\u5219\u5f00\u542f\u4e8b\u52a1
\ncon = getConnection();
\n\/\/\u8bbe\u7f6e\u4e8b\u52a1\u63d0\u4ea4\u4e3a\u624b\u52a8
\ncon.setAutoCommit(false);
\n}<\/p>\n

\/\/ \u63d0\u4ea4\u4e8b\u52a1
\npublic static void commitTransaction() throws SQLException {
\n\/\/\u5224\u65adcon\u662f\u5426\u4e3a\u7a7a\uff0c\u5982\u679c\u4e3a\u7a7a\uff0c\u5219\u8bf4\u660e\u6ca1\u6709\u5f00\u542f\u4e8b\u52a1
\nif(con == null){
\nthrow new SQLException(“\u6ca1\u6709\u5f00\u542f\u4e8b\u52a1,\u4e0d\u80fd\u63d0\u4ea4\u4e8b\u52a1”);
\n}
\n\/\/\u5982\u679ccon\u4e0d\u4e3a\u7a7a,\u63d0\u4ea4\u4e8b\u52a1
\ncon.commit();
\n\/\/\u4e8b\u52a1\u63d0\u4ea4\u540e\uff0c\u5173\u95ed\u8fde\u63a5
\ncon.close();
\n\/\/\u8868\u793a\u4e8b\u52a1\u5df2\u7ecf\u7ed3\u675f
\ncon = null;
\n}<\/p>\n

\/\/ \u56de\u6eda\u4e8b\u52a1
\npublic static void rollbackTransaction() throws SQLException {
\n\/\/\u5224\u65adcon\u662f\u5426\u4e3a\u7a7a\uff0c\u5982\u679c\u4e3a\u7a7a\uff0c\u5219\u8bf4\u660e\u6ca1\u6709\u5f00\u542f\u4e8b\u52a1\uff0c\u4e5f\u5c31\u4e0d\u80fd\u56de\u6eda\u4e8b\u52a1
\nif(con == null){
\nthrow new SQLException(“\u6ca1\u6709\u5f00\u542f\u4e8b\u52a1,\u4e0d\u80fd\u56de\u6eda\u4e8b\u52a1”);
\n}
\n\/\/\u4e8b\u52a1\u56de\u6eda
\ncon.rollback();
\n\/\/\u4e8b\u52a1\u56de\u6eda\u540e\uff0c\u5173\u95ed\u8fde\u63a5
\ncon.close();
\n\/\/\u628acon\u7f6e\u4e3anull\uff0c\u8868\u793a\u4e8b\u52a1\u5df2\u7ecf\u7ed3\u675f
\ncon = null;
\n}<\/p>\n

\/\/ \u5173\u95ed\u4e8b\u52a1
\npublic static void releaseConnection(Connection connection) throws SQLException {
\n\/\/\u5982\u679c\u53c2\u6570\u8fde\u63a5\u4e0e\u5f53\u524d\u4e8b\u52a1\u8fde\u63a5\u4e0d\u76f8\u7b49\uff0c\u5219\u8bf4\u660e\u53c2\u6570\u8fde\u63a5\u4e0d\u662f\u4e8b\u52a1\u8fde\u63a5\uff0c\u53ef\u4ee5\u5173\u95ed\uff0c\u5426\u5219\u7531\u4e8b\u52a1\u5173\u95ed
\nif(connection != null && con != connection){
\n\/\/\u5982\u679c\u8fde\u63a5\u6ca1\u6709\u88ab\u5173\u95ed\uff0c\u5173\u95ed\u4e4b
\nif(!connection.isClosed()){
\nconnection.close();
\n}
\n}
\n}
\n}<\/p>\n

\u6d4b\u8bd5\u4ee3\u7801\uff1a<\/p>\n

package cn.ccnu.jdbc;<\/p>\n

import java.sql.Connection;
\nimport java.sql.PreparedStatement;
\nimport java.sql.SQLException;<\/p>\n

import org.apache.commons.dbutils.QueryRunner;
\nimport org.junit.Test;<\/p>\n

public class JdbcUtilsTest {
\n@Test
\npublic void test1() throws SQLException {
\nString sql = “update user set salary = ? where id = ?”;
\nQueryRunner qr = new QueryRunner();
\nConnection conn = JdbcUtils.getConnection();
\nqr.update(conn, sql, “800”, 3);
\nJdbcUtils.releaseConnection(conn);
\n}<\/p>\n

\/\/ \u5bf9\u4e8b\u52a1\u7684\u6d4b\u8bd5\u4e4b\u6ca1\u6709\u56de\u6eda
\n@Test
\npublic void test2() throws SQLException {
\nJdbcUtils.beginTransaction();
\nConnection conn = JdbcUtils.getConnection();
\nQueryRunner qr = new QueryRunner();
\nString sql1 = “update user set salary = salary + ? where id = 1;”;
\nString sql2 = “update user set salary = salary – ? where id = 2;”;
\nqr.update(conn, sql1, 200);
\nqr.update(conn, sql2, 200);
\nJdbcUtils.commitTransaction();
\nJdbcUtils.releaseConnection(conn);
\n}<\/p>\n

\/\/ \u5bf9\u4e8b\u52a1\u7684\u6d4b\u8bd5\u4e4b\u6709\u4f1a\u56de\u6eda
\n@Test
\npublic void test3() {
\ntry {
\n\/\/\u5f00\u542f\u4e8b\u52a1
\nJdbcUtils.beginTransaction();
\n\/\/\u5f97\u5230\u8fde\u63a5
\nConnection conn = JdbcUtils.getConnection();
\n\/\/\u5f97\u5230QueryRunner
\nQueryRunner qr = new QueryRunner();<\/p>\n

String sql1 = “update user set salary = salary + ? where id = 1;”;
\nString sql2 = “update user set salary = salary – ? where id = 2;”;
\n\/\/\u6267\u884c\u7b2c\u4e00\u6761sql
\nqr.update(conn, sql1, 100);
\n\/\/\u8ba4\u4e3a\u5236\u9020\u5f02\u5e38
\nint b = 1\/0;
\nqr.update(conn, sql2, 100);
\n\/\/\u63d0\u4ea4\u4e8b\u52a1
\nJdbcUtils.commitTransaction();
\n\/\/\u5173\u95ed\u8fde\u63a5\uff0c\u5728\u5904\u7406\u4e8b\u52a1\u65f6\uff0c\u8fd9\u53e5\u53ef\u4ee5\u4e0d\u5199\uff0c\u56e0\u4e3a\u5728\u63d0\u4ea4\u6216\u56de\u6eda\u65f6\u4f1a\u5173\u95ed\u8fde\u63a5
\nJdbcUtils.releaseConnection(conn);
\n} catch (Exception e) {
\ntry {
\nJdbcUtils.rollbackTransaction();
\n} catch (SQLException e1) {
\ne1.printStackTrace();
\n}
\n}
\n}
\n}<\/p>\n

\u4ece\u4e0a\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u53ef\u4ee5\u770b\u51fa\uff0c\u529f\u80fd\u53ef\u4ee5\u88ab\u5b9e\u73b0\uff0c\u4f46\u662f\u4ea7\u751f\u4e86\u4ee3\u7801\u5197\u4f59\uff0c\u6bd4\u5982\u8bf4\uff0c\u6bcf\u6b21\u90fd\u8981\u5f97\u5230\u8fde\u63a5\uff0c\u518d\u628a\u8fde\u63a5\u4f5c\u4e3a\u53c2\u6570\u4f20\u7ed9QueryRunner\uff0c\u6700\u540e\u5173\u95ed\u8fde\u63a5\u3002\u6bcf\u6b21\u4e8b\u52a1\u64cd\u4f5c\u65f6\uff0c\u90fd\u8981\u8fdb\u884c\u8fd9\u51e0\u6b65\uff0c\u90a3\u6211\u4eec\uff0c\u662f\u4e0d\u662f\u53ef\u4ee5\u628a\u8fd9\u51e0\u6b65\u62bd\u53d6\u51fa\u6765\uff1f\uff1f\uff1f\u6211\u4eec\u7684\u89e3\u51b3\u529e\u6cd5\u662f\uff0c\u91cd\u5199\u4e00\u4e2a\u7c7bTSQueryRunner\u6765\u7ee7\u627fQueryRunner\uff0c\u7136\u540e\u8986\u76d6\u5176\u4e2d\u5e26\u6709Connection\u7684\u65b9\u6cd5\uff0c\u8fd9\u6837\u6211\u4eec\u5c31\u4e0d\u7528\u518d\u4f20Connection\u8fdb\u53bb\u4e86\u3002\u4f46\u95ee\u9898\u5c31\u5728\u4e8e\u5f00\u542f\u4e8b\u52a1\uff0c\u63d0\u4ea4\u4e8b\u52a1\uff0c\u56de\u6eda\u4e8b\u52a1\u65f6\uff0c\u6240\u6709\u7684\u8fde\u63a5\u8981\u662f\u540c\u4e00\u4e2a\u8fde\u63a5\uff0c\u6211\u4eec\u5982\u4f55\u4fdd\u8bc1\u5462\uff1f\u6211\u4eec\u6240\u6709\u7684\u65b9\u6cd5\u662f\uff0c\u5728JdbcUtils\u4e2d\u5728\u5f00\u542f\u4e8b\u52a1\u65f6\u5f97\u5230\u7684\u7684Connection\u5b58\u653e\u5728ThreadLocal\u4e2d\uff0c\u8fd9\u6837\u63d0\u4ea4\u4e8b\u52a1\uff0c\u56de\u6eda\u4e8b\u52a1\u65f6\u6240\u6709\u7684\u8fde\u63a5\u5c31\u662f\u540c\u4e00\u4e2a\u8fde\u63a5\u4e86\u3002<\/p>\n

TSQueryRunner<\/p>\n

package cn.ccnu.queryrunner;<\/p>\n

import java.sql.Connection;
\nimport java.sql.SQLException;<\/p>\n

import org.apache.commons.dbutils.QueryRunner;
\nimport org.apache.commons.dbutils.ResultSetHandler;<\/p>\n

public class TSQueryRunner extends QueryRunner {<\/p>\n

@Override
\npublic int[] batch(String sql, Object[][] params)
\nthrows SQLException {
\nConnection conn = JdbcUtils.getConnection();
\nint[] result = super.batch(conn, sql, params);
\nJdbcUtils.releaseConnection(conn);
\nreturn result;
\n}<\/p>\n

@Override
\npublic <T> T query(String sql, ResultSetHandler<T> rsh,
\nObject… params) throws SQLException {
\nConnection conn = JdbcUtils.getConnection();
\nT result = super.query(conn, sql, rsh, params);
\nJdbcUtils.releaseConnection(conn);
\nreturn result;
\n}<\/p>\n

@Override
\npublic <T> T query(String sql, ResultSetHandler<T> rsh)
\nthrows SQLException {
\nConnection conn = JdbcUtils.getConnection();
\nT result = super.query(conn, sql, rsh);
\nJdbcUtils.releaseConnection(conn);
\nreturn result;
\n}<\/p>\n

@Override
\npublic int update(String sql, Object… params)
\nthrows SQLException {
\nConnection conn = JdbcUtils.getConnection();
\nint result = super.update(conn, sql, params);
\nJdbcUtils.releaseConnection(conn);
\nreturn result;
\n}<\/p>\n

@Override
\npublic int update(String sql, Object param)
\nthrows SQLException {
\nConnection conn = JdbcUtils.getConnection();
\nint result = super.update(conn, sql, param);
\nJdbcUtils.releaseConnection(conn);
\nreturn result;
\n}<\/p>\n

@Override
\npublic int update(String sql) throws SQLException {
\nConnection conn = JdbcUtils.getConnection();
\nint result = super.update(conn, sql);
\nJdbcUtils.releaseConnection(conn);
\nreturn result;
\n}<\/p>\n

}<\/p>\n

JdbcUtils<\/p>\n

package cn.ccnu.queryrunner;<\/p>\n

import java.sql.Connection;
\nimport java.sql.SQLException;<\/p>\n

import javax.sql.DataSource;
\nimport com.mchange.v2.c3p0.ComboPooledDataSource;<\/p>\n

public class JdbcUtils {
\n\/\/\u901a\u8fc7c3p0\u8fde\u63a5\u6c60\u5f97\u5230DataSource
\nprivate static DataSource ds = new ComboPooledDataSource();
\n\/\/\u5b9a\u4e49\u4e00\u4e2aConnection\u6765\u5224\u65ad\u662f\u5426\u6709\u4e8b\u52a1,\u5c06con\u653e\u5728ThreadLocal\u4e2d
\n\/\/\u90a3\u4e48QueryRunner\u5728\u4f7f\u7528\u4e8b\u52a1\u65f6\uff0c\u5c31\u53ef\u4ee5\u4e0d\u7528\u4f20con\uff0c\u800c\u4ea4\u7531util\u63a7\u5236
\nprivate static ThreadLocal<Connection> conn = new ThreadLocal<Connection>();
\n\/\/\u8fd4\u56deDataSource
\npublic static DataSource getDataSource(){
\nreturn ds;
\n}<\/p>\n

\/\/\u901a\u8fc7DataSource\u5f97\u5230Connection
\npublic static Connection getConnection() throws SQLException{
\n\/\/\u5f97\u5230ThreadLocal\u4e2d\u7684connection
\nConnection con = conn.get();
\n\/\/\u5982\u679c\u5f00\u542f\u4e86\u4e8b\u52a1\uff0c\u5219con\u4e0d\u4e3a\u7a7a\uff0c\u5e94\u8be5\u76f4\u63a5\u8fd4\u56decon
\nif(con != null){
\nreturn con;
\n}
\nreturn ds.getConnection();
\n}<\/p>\n

\/\/ \u5f00\u542f\u4e8b\u52a1
\npublic static void beginTransaction() throws SQLException {
\n\/\/\u5f97\u5230ThreadLocal\u4e2d\u7684connection
\nConnection con = conn.get();
\n\/\/\u5224\u65adcon\u662f\u5426\u4e3a\u7a7a\uff0c\u5982\u679c\u4e0d\u4e3a\u7a7a\uff0c\u5219\u8bf4\u660e\u4e8b\u52a1\u5df2\u7ecf\u5f00\u542f
\nif(con != null){
\nthrow new SQLException(“\u4e8b\u52a1\u5df2\u7ecf\u5f00\u542f\u4e86,\u4e0d\u80fd\u91cd\u590d\u5f00\u542f\u4e8b\u52a1”);
\n}
\n\/\/\u5982\u679c\u4e0d\u4e3a\u7a7a\uff0c\u5219\u5f00\u542f\u4e8b\u52a1
\ncon = getConnection();
\n\/\/\u8bbe\u7f6e\u4e8b\u52a1\u63d0\u4ea4\u4e3a\u624b\u52a8
\ncon.setAutoCommit(false);
\n\/\/\u628a\u5f53\u524d\u5f00\u542f\u7684\u4e8b\u52a1\u653e\u5165ThreadLocal\u4e2d
\nconn.set(con);
\n}<\/p>\n

\/\/ \u63d0\u4ea4\u4e8b\u52a1
\npublic static void commitTransaction() throws SQLException {
\n\/\/\u5f97\u5230ThreadLocal\u4e2d\u7684connection
\nConnection con = conn.get();
\n\/\/\u5224\u65adcon\u662f\u5426\u4e3a\u7a7a\uff0c\u5982\u679c\u4e3a\u7a7a\uff0c\u5219\u8bf4\u660e\u6ca1\u6709\u5f00\u542f\u4e8b\u52a1
\nif(con == null){
\nthrow new SQLException(“\u6ca1\u6709\u5f00\u542f\u4e8b\u52a1,\u4e0d\u80fd\u63d0\u4ea4\u4e8b\u52a1”);
\n}
\n\/\/\u5982\u679ccon\u4e0d\u4e3a\u7a7a,\u63d0\u4ea4\u4e8b\u52a1
\ncon.commit();
\n\/\/\u4e8b\u52a1\u63d0\u4ea4\u540e\uff0c\u5173\u95ed\u8fde\u63a5
\ncon.close();
\n\/\/\u5c06\u8fde\u63a5\u79fb\u51faThreadLocal
\nconn.remove();
\n}<\/p>\n

\/\/ \u56de\u6eda\u4e8b\u52a1
\npublic static void rollbackTransaction() throws SQLException {
\n\/\/\u5f97\u5230ThreadLocal\u4e2d\u7684connection
\nConnection con = conn.get();
\n\/\/\u5224\u65adcon\u662f\u5426\u4e3a\u7a7a\uff0c\u5982\u679c\u4e3a\u7a7a\uff0c\u5219\u8bf4\u660e\u6ca1\u6709\u5f00\u542f\u4e8b\u52a1\uff0c\u4e5f\u5c31\u4e0d\u80fd\u56de\u6eda\u4e8b\u52a1
\nif(con == null){
\nthrow new SQLException(“\u6ca1\u6709\u5f00\u542f\u4e8b\u52a1,\u4e0d\u80fd\u56de\u6eda\u4e8b\u52a1”);
\n}
\n\/\/\u4e8b\u52a1\u56de\u6eda
\ncon.rollback();
\n\/\/\u4e8b\u52a1\u56de\u6eda\u540e\uff0c\u5173\u95ed\u8fde\u63a5
\ncon.close();
\n\/\/\u5c06\u8fde\u63a5\u79fb\u51faThreadLocal
\nconn.remove();
\n}<\/p>\n

\/\/ \u5173\u95ed\u4e8b\u52a1
\npublic static void releaseConnection(Connection connection) throws SQLException {
\n\/\/\u5f97\u5230ThreadLocal\u4e2d\u7684connection
\nConnection con = conn.get();
\n\/\/\u5982\u679c\u53c2\u6570\u8fde\u63a5\u4e0e\u5f53\u524d\u4e8b\u52a1\u8fde\u63a5\u4e0d\u76f8\u7b49\uff0c\u5219\u8bf4\u660e\u53c2\u6570\u8fde\u63a5\u4e0d\u662f\u4e8b\u52a1\u8fde\u63a5\uff0c\u53ef\u4ee5\u5173\u95ed\uff0c\u5426\u5219\u4ea4\u7531\u4e8b\u52a1\u5173\u95ed
\nif(connection != null && con != connection){
\n\/\/\u5982\u679c\u8fde\u63a5\u6ca1\u6709\u88ab\u5173\u95ed\uff0c\u5173\u95ed\u4e4b
\nif(!connection.isClosed()){
\nconnection.close();
\n}
\n}
\n}
\n}<\/p>\n

\u6d4b\u8bd5\u4ee3\u7801<\/p>\n

\n
\n

package cn.ccnu.queryrunner;<\/p>\n

import java.sql.Connection;
\nimport java.sql.PreparedStatement;
\nimport java.sql.SQLException;<\/p>\n

import org.apache.commons.dbutils.QueryRunner;
\nimport org.junit.Test;<\/p>\n

public class JdbcUtilsTest {
\n\/\/ \u6ca1\u6709\u4e8b\u52a1\u7684\u6d4b\u8bd5
\n@Test
\npublic void test1() throws SQLException {
\nString sql = “update user set salary = ? where id = ?”;
\nQueryRunner qr = new TSQueryRunner();
\nqr.update(sql, 800, 3);
\n}<\/p>\n

\/\/ \u5bf9\u4e8b\u52a1\u7684\u6d4b\u8bd5\u4e4b\u6ca1\u6709\u56de\u6eda
\n@Test
\npublic void test2() throws SQLException {
\nJdbcUtils.beginTransaction();
\nQueryRunner qr = new TSQueryRunner();
\nString sql1 = “update user set salary = salary + ? where id = 1;”;
\nString sql2 = “update user set salary = salary – ? where id = 2;”;
\nqr.update(sql1, 200);
\nqr.update(sql2, 200);
\nJdbcUtils.commitTransaction();
\n}<\/p>\n

\/\/ \u5bf9\u4e8b\u52a1\u7684\u6d4b\u8bd5\u4e4b\u6709\u4f1a\u56de\u6eda
\n@Test
\npublic void test3() {
\ntry {
\n\/\/\u5f00\u542f\u4e8b\u52a1
\nJdbcUtils.beginTransaction();
\n\/\/\u5f97\u5230QueryRunner
\nQueryRunner qr = new TSQueryRunner();
\nString sql1 = “update user set salary = salary + ? where id = 1;”;
\nString sql2 = “update user set salary = salary – ? where id = 2;”;
\n\/\/\u6267\u884c\u7b2c\u4e00\u6761sql
\nqr.update(sql1, 100);
\n\/\/\u4eba\u4e3a\u5236\u9020\u5f02\u5e38
\nint b = 1\/0;
\nqr.update(sql2, 100);
\n\/\/\u63d0\u4ea4\u4e8b\u52a1
\nJdbcUtils.commitTransaction();
\n} catch (Exception e) {
\ntry {
\nJdbcUtils.rollbackTransaction();
\n} catch (SQLException e1) {
\ne1.printStackTrace();
\n}
\n}
\n}
\n}<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

DBUtils\u7b80\u5316\u4e86\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\uff0c\u518d\u52a0\u4e0a\u6211\u4eec\u4e0a\u4e00\u8282\u8bb2\u7684JdbcUtils\uff0c\u4e24\u8005\u914d\u5408\u8d77\u6765\u7528\uff0c\u4e5f\u662f\u975e\u5e38\u65b9\u4fbf\uff0c\u4f46\u662f\u64cd\u4f5c\u5728\u64cd\u4f5c\u4e8b\u52a1\u65f6\uff0c\u4e5f\u4f1a\u4ea7\u751f\u4e00\u4e9b\u5197\u4f59\u7684\u4ee3\u7801\u3002\u4ee3\u7801\u793a\u4f8b…<\/p>\n

Read More Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[30],"tags":[11],"class_list":["post-135","post","type-post","status-publish","format-standard","hentry","category-30","tag-java"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p9HWWB-2b","jetpack-related-posts":[{"id":38,"url":"https:\/\/chenhaitao.com\/.wp-toolkit_I\/2018\/03\/10\/springboot%e6%95%b4%e5%90%88mybatis\/","url_meta":{"origin":135,"position":0},"title":"SpringBoot\u6574\u5408Mybatis","author":"\u6770\u514b\u9648","date":"2018\u5e743\u670810\u65e5","format":false,"excerpt":"\u65b9\u5f0f\u4e00\uff1a\u4f7f\u7528Annotation\u81ea\u52a8\u5316\u96c6\u6210 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