标签:inf java web inject sys etc except tostring throws
package com.qy.dbUtil; import java.io.IOException; import java.io.InputStream; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.Properties; public class JDBCUtil { private static String driver=null; private static String url=null; private static String username=null; private static String password=null; static{ try { InputStream is= JDBCUtil.class.getClassLoader().getResourceAsStream("db.properties"); Properties properties = new Properties(); properties.load(is); driver = properties.getProperty("driver").toString(); url= properties.get("url").toString(); username= properties.get("username").toString(); password= properties.get("password").toString(); Class.forName(driver); } catch (IOException e) { System.out.println("db.properties文件流加载失败"); e.printStackTrace(); } catch (ClassNotFoundException e) { System.out.println("com.mysql.jdbc.Driver加载类不存在"); e.printStackTrace(); } } /** * 获取Connection连接 * @return Connection * @throws SQLException */ public static Connection getConnection() throws SQLException { Connection con = DriverManager.getConnection(url, username, password); System.out.println("JDBC链接成功"); return con; } /** * 释放连接 * @param con * @param st * @param rs */ public static void release(Connection con,Statement st,ResultSet rs) { if (rs!=null) { try { rs.close(); } catch (SQLException e) { System.out.println("ResultSet关闭异常"); e.printStackTrace(); } } if (st!=null) { try { st.close(); } catch (SQLException e) { System.out.println("Statement关闭异常"); e.printStackTrace(); } } if (con!=null) { try { con.close(); } catch (SQLException e) { System.out.println("Connection关闭异常"); e.printStackTrace(); } } System.out.println("关闭成功"); } /** * 测试连接 * TODO * @param args */ public static void main(String[] args) { try { Connection con = getConnection(); release(con, null, null); } catch (SQLException e) { System.out.println("Connection连接异常"); e.printStackTrace(); } } }
public static void main(String[] args) throws SQLException { Connection con = JDBCUtil.getConnection(); /*获取连接*/ /*调用sql语句*/ //PreparedStatement cs = con.prepareStatement("insert into lobtable(id,resum,clob) values(?,?,?)"); /*调用存储过程*/ CallableStatement cs = con.prepareCall("{call proName(?,?,?,?)}"); cs.setObject(1, "id1"); //为存储过程设置参数 cs.setObject(2, "resum2"); cs.setObject(3, "clob3"); cs.execute(); //执行存储过程 JDBCUtil.release(con, cs, null); /*释放连接*/ }
涉及内容:org.springframework.jdbc.core.JdbcTemplate、proxool-0.9.1.jar
在web.xml配置springConfig.xml和jdbcproxool.xml路径
<context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/springConfig.xml</param-value> </context-param> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>/WEB-INF/classes/log4j.properties</param-value> </context-param> <servlet> <servlet-name>proxoolServletConfigurator</servlet-name> <servlet-class> org.logicalcobwebs.proxool.configuration.ServletConfigurator </servlet-class> <init-param> <param-name>xmlFile</param-name> <param-value>WEB-INF/classes/jdbcproxool.xml</param-value> </init-param> <load-on-startup>2</load-on-startup> </servlet>
jdbcproxool.xml
<?xml version="1.0" encoding="UTF-8"?> <something-else-entirely> <proxool> <alias>demodb</alias> <driver-url>jdbc:mysql://127.0.0.1:3306/demo?useUnicode\=true&characterEncoding\=UTF-8</driver-url> <driver-class>com.mysql.jdbc.Driver</driver-class> <driver-properties> <property name="user" value="root"/> <property name="password" value="root"/> </driver-properties> <minimum-connection-count>10</minimum-connection-count> <prototype-count>20</prototype-count> <maximum-connection-count>60</maximum-connection-count> <house-keeping-sleep-time>60000</house-keeping-sleep-time> <simultaneous-build-throttle>20</simultaneous-build-throttle> <test-before-use>true</test-before-use> <house-keeping-test-sql>select now()</house-keeping-test-sql> <injectable-prepared-statement-interface>java.sql.PreparedStatement</injectable-prepared-statement-interface> </proxool> </something-else-entirely>
springConfig.xml
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="org.logicalcobwebs.proxool.ProxoolDriver"/> <property name="url" value="proxool.demodb"/> </bean> <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"> <property name="dataSource" ref="dataSource"/> </bean>
java调用
@Repository("commonDao") public class CommonDao { @Resource(name = "jdbcTemplate") private JdbcTemplate jdbcTemplate;
/** * 调用存储过程(无返回值) * TODO * @param procedureName 存储过程名 * @param paramList 参数列表 */ public void callProcedure(String procedureName, List paramList) { String callProcedureString = "call " + procedureName + "("; if (paramList != null && paramList.size() > 0) { String paramString = ""; for (int i = 0; i < paramList.size(); i++) { paramString += "‘" + paramList.get(i) + "‘"; if (i < paramList.size() - 1) { paramString += ","; } } callProcedureString += paramString; } callProcedureString = callProcedureString + ")"; this.jdbcTemplate.execute(callProcedureString); }
public JdbcTemplate getJdbcTemplate() { return jdbcTemplate; } public void setJdbcTemplate(JdbcTemplate jdbcTemplate) { this.jdbcTemplate = jdbcTemplate; } }
标签:inf java web inject sys etc except tostring throws
原文地址:https://www.cnblogs.com/aeolian/p/10736644.html