本文介绍了java连接postgresql数据库的示例代码,分享给大家,具体如下:
1.下载驱动jar
下载地址:https://jdbc.postgresql.org/download.html
2.导入jar包
新建lib文件夹,将下载的jar驱动包拖到文件夹中。
将jar驱动包添加到libraries
3.程序代码如下:helloworld.java
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package test;
import java.sql.connection;
import java.sql.drivermanager;
import java.sql.resultset;
import java.sql.sqlexception;
import java.sql.statement;
public class helloworld {
public static void main(string []args) {
connection connection= null ;
statement statement = null ;
try {
string url= "jdbc:postgresql://127.0.0.1:5432/postgis" ;
string user= "postgres" ;
string password = "123456" ;
class .forname( "org.postgresql.driver" );
connection= drivermanager.getconnection(url, user, password);
system.out.println( "是否成功连接pg数据库" +connection);
string sql= "select name from test" ;
statement=connection.createstatement();
resultset resultset=statement.executequery(sql);
while (resultset.next()){
string name=resultset.getstring( 1 );
system.out.println(name);
}
} catch (exception e){
throw new runtimeexception(e);
} finally {
try {
statement.close();
}
catch (sqlexception e){
e.printstacktrace();
throw new runtimeexception(e);
} finally {
try {
connection.close();
}
catch (sqlexception e){
e.printstacktrace();
throw new runtimeexception(e);
}
}
}
}
}
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运行结果:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.cnblogs.com/shijingjing07/p/6354487.html