标签:style http io os java sp on cti html
tomcat的 配置,进入conf->context.xml
<Resource name="mysql"
auth="Container" type="javax.sql.DataSource"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/test"
username="root"
password="123456"
maxActive="100"//最大活动数
maxIdle="30"//最大的空闲
maxWait="10000" //最大的等待时间
/>
web中调用
Context c=new InitialContext();
DataSource ds=(DataSource)c.lookup("java:comp/env/mysql");
out.println(ds.getConnection());
通过注记获取
@Resource(name="mysql",type=DataSource.class,authenticationType=AuthenticationType.CONTAINER)
public class Test extends HttpServlet {
@Resource(name="mysql")
private DataSource ds;
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
try {
Context c=new InitialContext();
out.println(ds.getConnection().toString());
} catch (NamingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
out.flush();
out.close();
}
标签:style http io os java sp on cti html
原文地址:http://www.cnblogs.com/danmao/p/4038572.html