官网：http://www.postgresql.org/download/ 按自己需求，下载安装包，
我下载的windows版32位的。http://get.enterprisedb.com/postgresql/postgresql-9.4.0-1-windows.exe
执行下载包，进行安装，请一定记住你输入的密码，如“pg”
安装完成后，在开始菜单找到PostgreSQL 9.4 (x86)\pgAdmin III,打开 pgAdmin III，点击下图节点，输入密码“pg”
连接后如图
点击 
，在新打开的窗口输入下边语句，创建表，插入数据
CREATE TABLE users (
uid serial PRIMARY KEY ,
name varchar(40) NOT NULL CHECK (name <> ‘‘),
pwd varchar(40) NOT NULL CHECK (name <> ‘‘),
gender char(1),
email varchar(40),
birthday date
);
INSERT INTO users VALUES (1, ‘zxh‘, ‘zxhpwd‘, ‘M‘, ‘piaolingzxh@qq.com‘, ‘1984-07-13‘);
INSERT INTO users VALUES (2, ‘zxh2‘, ‘zxh2pwd‘, ‘F‘, ‘piaolingzxh@qq2.com‘, ‘1984-07-13‘);
展开目录树， 选中表“users”，点“
”查看数据
在打开也找到
打开psqljdbc，--“download”--然后找到下面
//psqlJDBC
//Publisher : PostgreSQL Global Development Group
//驱动地址：http://jdbc.postgresql.org/download.html => http://jdbc.postgresql.org/download/postgresql-9.3-1102.jdbc41.jar
//本地下载：http://files.cnblogs.com/piaolingzxh/postgresql-9.3-1102.jdbc41.jar.zip
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;
public class postgres_jdbc {
public static void main(String[] args) {
try {
Class.forName("org.postgresql.Driver").newInstance();
String url = "jdbc:postgresql://localhost:5432/postgres";
Connection con = DriverManager.getConnection(url, "postgres", "pg");
Statement st = con.createStatement();
String sql = " select * from users ";
ResultSet rs = st.executeQuery(sql);
ResultSetMetaData rsmd = rs.getMetaData();
int columnCount = rsmd.getColumnCount();
while (rs.next()) {
for (int i = 1; i <= columnCount; i++) {
System.out.print(rs.getString(i)+"\t");
}
System.out.println();
}
rs.close();
st.close();
con.close();
} catch (Exception ee) {
System.out.print(ee.getMessage());
}
}
}
//psqlJDBC
//Publisher : PostgreSQL Global Development Group
//驱动地址：http://jdbc.postgresql.org/download.html => http://jdbc.postgresql.org/download/postgresql-9.3-1102.jdbc41.jar
//本地下载：http://files.cnblogs.com/piaolingzxh/postgresql-9.3-1102.jdbc41.jar.zip
import java.sql.{ Connection, DriverManager, ResultSet };
object postgres_jdbc {
val conn_str = "jdbc:postgresql://localhost:5432/postgres"
classOf[org.postgresql.Driver]
def main(args: Array[String]) {
//classOf[org.postgresql.Driver]
val conn = DriverManager.getConnection(conn_str, "postgres", "pg")
try {
// Configure to be Read Only
val statement = conn.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY)
// Execute Query
val rs = statement.executeQuery("SELECT * FROM users")
var columnCount = rs.getMetaData().getColumnCount();
// Iterate Over ResultSet
while (rs.next) {
for (i <- 1 to columnCount) {
System.out.print(rs.getString(i) + "\t");
}
System.out.println();
}
} finally {
conn.close
}
}
}
http://www.php100.com/manual/PostgreSQL8/
postgresql 入门（含java、scala连接代码）
原文：http://www.cnblogs.com/piaolingzxh/p/4201216.html