CentOS下安装postgresql

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<ul>
<li>安装</li>
</ul>
<div style="background-color: #eeeeee; font-size: 13px; padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%;"># yum install postgresql postgresql-libs postgresql-server
<div style="background-color: #eeeeee; font-size: 13px; padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%;">
[root@dev ~]# service postgresql status postmaster is stopped 
[root@dev ~]# service postgresql start Initializing database: [ OK ] 
Starting postgresql service: [ OK ]
</div>
 
</div>
<ul>
<li>
 设为开机启动</li>
</ul>
 <div style="background-color: #eeeeee; font-size: 13px; padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%;">[root@dev ~]# chkconfig postgresql on [root@dev ~]# chkconfig --list postgresql postgresql 0:off 1:off 2:on 3:on 4:on 5:on 6:off
</div>
<ul>
<li>配置参数</li>
</ul>
 <div style="background-color: #eeeeee; font-size: 13px; border: 1px solid #cccccc; padding: 4px 5px 4px 4px; width: 98%;">[root@dev ~]# vim /var/lib/pgsql/data/pg_hba.conf 
# "local" is for Unix domain socket connections only 
#local all all ident sameuser local all all trust # IPv4 local connections: 
#host all all 127.0.0.1/32 ident sameuser host all all 127.0.0.1/32 md5 
host all all 192.168.28.3/32 md5 #必须有后面那个，那个是掩码，否则总报pg_hba.conf语法错 
[root@dev ~]# su - postgres -bash-3.2$ pg_ctl reload 
postmaster signaled 
[root@dev ~]# vim /var/lib/pgsql/data/postgresql.conf listen_addresses = '*' 
[root@dev ~]# su - postgres -bash-3.2$ pg_ctl reload 
postmaster signaled
</div>
<ul>
<li>
 常用命令</li>
</ul>
 <div style="background-color: #eeeeee; font-size: 13px; border: 1px solid #cccccc; padding: 4px 5px 4px 4px; width: 98%;"># psql -l 列出所有数据库 # psql => \l 列出所有数据库 => \c cake 连接到cake数据库 => \dt 列出所有tables => \d shift 查看shift表结构 => \di 列出所有indexes => \d shift_pkey 列出所有index: shift_pkey
</div>
<ul><li>
测试java代码</li></ul>
 <div style="background-color: #eeeeee; font-size: 13px; padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%;"> 1 import java.sql.Connection; 2 import java.sql.DriverManager; 3 import java.sql.ResultSet; 4 import java.sql.Statement; 5 6 public class PostgresqlTest { 7 8 /** 9 * @param args 10 */ 11 public static void main(String[] args) { 12 try { 13 Class.forName("org.postgresql.Driver").newInstance(); 14 String connectUrl = "jdbc:postgresql://192.168.250.231:5432/poem"; 15 Connection conn = DriverManager.getConnection(connectUrl, 16 "poem", "poem"); 17 Statement st = conn.createStatement(); 18 String sql = "select 1;"; 19 ResultSet rs = st.executeQuery(sql); 20 while (rs.next()) { 21 System.out.println(rs.getInt(1)); 22 } 23 rs.close(); 24 st.close(); 25 conn.close(); 26 } catch (Exception e) { 27 e.printStackTrace(); 28 } 29 } 30 31 } 32 
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