javac 目标版本1.3与默认的源版本1.5冲突

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>          
改成下列的配置：
 
<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>