通过java api 读取sql 中数据（查询）

jdbc.url.jwhat=jdbc\:mysql\://ip\:3306/laibadev?useUnicode\=true&characterEncoding\=UTF-8
jdbc.username.jwhat=
jdbc.password.jwhat=
jdbc.dbType=mysql

INSERT INTO `bns_spider_user` VALUES ('http://toutiao.com/m4227761960/', NULL, NULL, NULL, 43, ' 娱乐八卦姐妹淘', NULL);
INSERT INTO `bns_spider_user` VALUES ('http://toutiao.com/m3704154333/', NULL, NULL, NULL, 44, ' MC1890', NULL);
INSERT INTO `bns_spider_user` VALUES ('http://toutiao.com/m5360794786/', NULL, NULL, NULL, 45, ' 八卦队长', NULL);
INSERT INTO `bns_spider_user` VALUES ('http://toutiao.com/m3676970251/', NULL, NULL, NULL, 46, ' 娱乐圈电影解读', NULL);
INSERT INTO `bns_spider_user` VALUES ('http://toutiao.com/m3345854756/', NULL, NULL, NULL, 47, ' 青春娱乐网', NULL);
INSERT INTO `bns_spider_user` VALUES ('http://toutiao.com/m3178840731/', NULL, NULL, NULL, 48, ' 百街秀娱乐', NULL);
INSERT INTO `bns_spider_user` VALUES ('http://toutiao.com/m4619040717/', NULL, NULL, NULL, 49, ' 时光机Studio', NULL);
INSERT INTO `bns_spider_user` VALUES ('http://toutiao.com/m3908723027/', NULL, NULL, NULL, 50, ' 星扒客push', NULL);

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;

import cn.paltform.Spider;

/**
* ClassName:DBlUtils <br/>
* Function: TODO ADD FUNCTION. <br/>
* Reason: TODO ADD REASON. <br/>
* Date: 2015年9月14日 下午3:19:51 <br/>
*
* @author
* @version
* @since JDK 1.7.79
*/
public class DBlUtils {

public static String url = null;
public static String username = null;
public static String password = null;
public static Connection conn;
public static Statement stmt;
public static ResultSet rs;
public static String fileName = null;

public static String PATH = "/dbconfig.properties";
public static Properties properties;
static {
try {
InputStream is = DBlUtils.class.getResourceAsStream(PATH);
System.out.println("is:" + is);
properties = new Properties();
properties.load(is);
url = properties.getProperty("jdbc.url.jwhat");
username = properties.getProperty("jdbc.username.jwhat");
password = properties.getProperty("jdbc.password.jwhat");
if (is != null)
is.close();
} catch (IOException e) {

e.printStackTrace();
}

}

public void closeConnection(Connection conn) {

if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}

public static void insertd(String sql) {
try {
conn = DriverManager.getConnection(url, username, password);
conn.setAutoCommit(false);
stmt = conn.prepareStatement("load data local infile '' "
+ "into table loadtest fields terminated by ','");
StringBuilder sb = new StringBuilder();
InputStream is = new ByteArrayInputStream(sb.toString().getBytes());
((com.mysql.jdbc.Statement) stmt).setLocalInfileInputStream(is);
stmt.executeUpdate(sql);
conn.commit();
} catch (SQLException e) {
e.printStackTrace();
}
}

/**
* 查询url
*
* @param sql
* @return
*/
public static List<Map> selecturlBySql(String sql) {
List<Map> listUrl = new ArrayList<Map>();
try {
conn = DriverManager.getConnection(url, username, password);
conn.setAutoCommit(false);
stmt = conn.prepareStatement("load data local infile '' "
+ "into table loadtest fields terminated by ','");
StringBuilder sb = new StringBuilder();
InputStream is = new ByteArrayInputStream(sb.toString().getBytes());
((com.mysql.jdbc.Statement) stmt).setLocalInfileInputStream(is);
rs = stmt.executeQuery(sql);
if (rs != null) {
ResultSetMetaData metaData = rs.getMetaData();
int count = metaData.getColumnCount();
Map map = null;
while (rs.next()) {
map = new HashMap();
for (int i = 1; i <= count; i++) {
map.put(metaData.getColumnName(i), rs.getObject(i));
}
listUrl.add(map);
}
}
} catch (SQLException e) {
e.printStackTrace();
}
return listUrl;
}

public static void main(String[] args) throws Exception {
String sql = "select t.url from bns_spider t ";
List<Map> selecturlBySql = selecturlBySql(sql);
for (int i = 0; i < selecturlBySql.size(); i++) {
Map map = selecturlBySql.get(i);
Set set = map.entrySet();
Iterator iterator = set.iterator();
String key = null;
String value = null;
while (iterator.hasNext()) {
Map.Entry mapentry = (Map.Entry) iterator.next();
key = (String)mapentry.getKey();
value =(String) mapentry.getValue();
}
//	System.out.println( key + "  " + value);
}
// insertd(sql);

}
}