BlogJava-一代魔笛的个人小站-文章分类-Java技术http://www.blogjava.net/wjjcml1982/category/30517.htmljava爱好者zh-cnMon, 31 Mar 2008 02:38:01 GMTMon, 31 Mar 2008 02:38:01 GMT60tomcat下数据库连接池和数据源的配置http://www.blogjava.net/wjjcml1982/articles/189716.html一代魔笛一代魔笛Mon, 31 Mar 2008 01:46:00 GMThttp://www.blogjava.net/wjjcml1982/articles/189716.htmlhttp://www.blogjava.net/wjjcml1982/comments/189716.htmlhttp://www.blogjava.net/wjjcml1982/articles/189716.html#Feedback0http://www.blogjava.net/wjjcml1982/comments/commentRss/189716.htmlhttp://www.blogjava.net/wjjcml1982/services/trackbacks/189716.html 1.先把JDBC驱动拷贝到tomcat的common\lib目录下.

2.在tomcat的conf目录下,打开server.xml文件,找到</Host>,在它上面添加以下内容:
<Context path="/app" docBase="E:\workspace3.0\mypro\web" debug="5" reloadable="true" crossContext="true">
　　
　　<Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_DBTest_log." suffix=".txt" timestamp="true"/>

<!-- Oracle -->
<Resource name="jdbc/bn" auth="Container" type="javax.sql.DataSource"/>

<ResourceParams name="jdbc/bn">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>com.microsoft.jdbc.sqlserver.SQLServerDriver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=mypro</value>
</parameter>
<parameter>
<name>username</name>
<value>sa</value>
</parameter>
<parameter>
<name>password</name>
<value></value>
</parameter>
<parameter>
<name>maxActive</name>
<value>20</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>10</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>1</value>
</parameter>
</ResourceParams>
</Context>
相信都看的懂的!

3 新建一个JSP文件,添加以下代码:
<%@ page import="javax.naming.Context" %>
<%@ page import="javax.sql.DataSource"%>
<%@ page import="javax.naming.InitialContext"%>
<%@ page import="java.sql.*"%>

<%
DataSource ds = null;
try{
Context initCtx = new InitialContext();
Context envCtx = (Context) initCtx.lookup("java:comp/env");
ds = (DataSource)envCtx.lookup("jdbc/myoracle");
if(ds!=null){
out.println("Connection is OK!");
Connection **=*s.getConnection();
if(cn!=null){
out.println("cn is Ok!");
Statement stmt = cn.createStatement();
ResultSet rst = stmt.executeQuery("select * from BOOK");
out.println("<p>rst is Ok!" + rst.next());
while(rst.next()){
out.println("<P>BOOK_CODE:" + rst.getString(1));
}
cn.close();
}else{
out.println("rst Fail!");
}
}
else
out.println("Fail!");
}catch(Exception ne){ out.println(ne);
}
%>
最后，进入测试。运行tomcat.bat,打开IE在地址栏中输入：http://localhost:8080\myapps\test.jsp

数据库连接池配置完毕!


一代魔笛 2008-03-31 09:46 发表评论
]]>“javac: 目标版本 1.3 与默认的源版本 1.5 冲突”的解决方案http://www.blogjava.net/wjjcml1982/articles/189714.html一代魔笛一代魔笛Mon, 31 Mar 2008 01:40:00 GMThttp://www.blogjava.net/wjjcml1982/articles/189714.htmlhttp://www.blogjava.net/wjjcml1982/comments/189714.htmlhttp://www.blogjava.net/wjjcml1982/articles/189714.html#Feedback0http://www.blogjava.net/wjjcml1982/comments/commentRss/189714.htmlhttp://www.blogjava.net/wjjcml1982/services/trackbacks/189714.html 开发JSP，使用Eclipse（JDK1.5），部署WEB应用Tomcat5.0.29
请求JSP时，Tomcat日志显示“javac: 目标版本 1.3 与默认的源版本 1.5 冲突”
查看上面的错误日志，发现"compilerTargetVM=1.3"，应该时Tomcat的JSP编译时使用的JDK1.3的版本。
进行如下修改：
找到tomcat conf目录下的web.xml，将这段内容：
    <servlet>
        <servlet-name>jsp</servlet-name>
        <servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
        <init-param>
            <param-name>fork</param-name>
            <param-value>false</param-value>
        </init-param>
        <init-param>
            <param-name>xpoweredBy</param-name>
            <param-value>false</param-value>
        </init-param>
        <load-on-startup>3</load-on-startup>
    </servlet>
改为如下
<servlet>
        <servlet-name>jsp</servlet-name>
        <servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
        <init-param>
        <param-name>compilerSourceVM</param-name>
        <param-value>1.5</param-value>
        </init-param>
        <init-param>
        <param-name>compilerTargetVM</param-name>
        <param-value>1.5</param-value>
        </init-param>
        <init-param>
            <param-name>fork</param-name>
            <param-value>false</param-value>
        </init-param>
        <init-param>
          <param-name>compiler</param-name>
          <param-value>modern</param-value>
        </init-param>
        <init-param>
            <param-name>xpoweredBy</param-name>
            <param-value>false</param-value>
        </init-param>
        <load-on-startup>3</load-on-startup>
    </servlet>
重新启动Tomcat，问题解决。

一代魔笛 2008-03-31 09:40 发表评论
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