JDBCTemplate的使用

1.引入相應的jar包後，配置applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:context="http://www.springframework.org/schema/context"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.2.xsd">


   <!-- 配置jdbcTemplate要用的連接池，採用dbcp數據源 -->
   <bean id="dataSourceJdbcTemplate"
        class="org.apache.commons.dbcp.BasicDataSource"
        destroy-method="close">
            <property name="driverClassName" value="com.mysql.jdbc.Driver" ></property>         
            <!-- 測試MySQL -->  
            <property name="url" value="jdbc:mysql://192.168.188.208:3306/discuz_cn"></property>
            <property name="username" value="zentalk_cn" ></property>
            <property name="password" value="zentalk#cn"></property>

            <property name="maxActive" value="100"></property>
            <property name="maxIdle" value="30"></property>
            <property name="maxWait" value="500"></property>
            <property name="defaultAutoCommit" value="true"></property>
            <property name="validationQuery" value="SELECT 1" />
            <property name="testOnBorrow" value="true"/> 
    </bean>

    <!-- 將配置好的dataSource注入到jdbcTemplate -->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource"><ref bean="dataSourceJdbcTemplate" />
        </property>
    </bean>
    <!-- 將配置好的jdbcTemplate注入到類dataSouceClass中，可以在這個類中使用jdbcTemplate -->
    <bean id="dataSouceClass" class="cn.springmvc.query.Dme="jdbcTemplate" ref="jdbcTemplate"></property>

    </bean>
</beans>

2.創建dataSourceClass工具類

package cn.springmvc.query;

import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.transaction.PlatformTransactionManager;

public class DataSourceClaemplate;

    public static JdbcTemplate getJdbcTemplate() {
        return jdbcTemplate;
    }

    public  void setJdbcTemplate(JdbcTemplate jt) {
        jdbcTemplate = jt;
    }

}

3.使用jdbcTemplate的一些方法

public class User {
public static List<UserSignInfo> getUserInfo(int userid) {

        String sql = "SELECT * FROM pre_plugin WHERE uid = " + userid;
        final List<UserSignInfo> ret = new ArrayList<UserSignInfo>();
        JdbcTemplate jt = DataSourceClass.getJdbcTemplate();
        jt.query(sql, null, null, new RowCallbackHandler(){
            public void processRow(ResultSet rs) throws SQLException{

                UserSignInfo us = new UserSignInfo();
                us.setDays(rs.getInt("days"));
                us.setMdays(rs.getInt("mdays"));
                us.setLasted(rs.getInt("lasted"));
                us.setLastreword(rs.getInt("lastreward"));
                us.setReworad(rs.getInt("reward"));
                us.setTime(rs.getInt("time"));
                us.setUserid(rs.getInt("uid"));
                us.setRow(rs.getInt("row"));
                ret.add(us);
            }           
        });
        return ret;
    }
    }

4.創建測試方法類

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.springmvc.query.UserSign;

public class signTest {

    public static void main(String[] args) {

        //引入jdbcTemplate相關配置
         ApplicationContext context = new ClassPathXmlApplicationContext("classpath:conf/applicationContext.xml");
           List<UserSignInfo> result=User.getUserInfo(24875);

    }

}