大虾救命连不上mysql了jsp

weiryang2008

已经把那个jar拷贝到lib下了，但连接时出错。。。

org.apache.jasper.JasperException: null,  message from server: "Host 'weir' is not allowed to connect to this MySQL server"
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:254)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.

xiaohe83

Connection conn = null ;
String re = "" ;
//设置你的数据库ip
String dbip = "127.0.0.1" ;
//设置你的数据库用户名和密码：
String use = "root" ;
String pass = "" ;
  public java.sql.Connection getConn(){
    try{
     Class.forName("org.gjt.mm.mysql.Driver".newInstance();
     String url ="jdbc:mysql://"+dbip+":3306/"+xd+"&"+use+"?user="+use+"&password="+pass+"&useUnicode=true&characterEncoding=gb2312" ;
     conn= DriverManager.getConnection(url);

    }
    catch(Exception e){
    e.printStackTrace();
    }
    return this.conn ;
  }