你在web.xml中配置参数了吗?
<servlet>
<servlet-name>yourservletname</servlet-name>
<servlet-class>yourclass</servlet-class>
<init-param>
<param-name>paramname</param-name>
<param-value>paraval</param-value>
</init-param>
</servlet>
<servlet>
<servlet-name>yourservletname</servlet-name>
<servlet-class>yourclass</servlet-class>
<init-param>
<param-name>paramname</param-name>
<param-value>paraval</param-value>
</init-param>
</servlet>
JBuilder 6.0 Enterprise\jakarta-tomcat-3.2.3\conf\web.xml还是工作目录ServletProgram_Study中的defaultroot\WEB-INF中web.xml
但是有时候jb容易把人工编辑的xml覆盖,你需要重新编译
另外直接用getInitParameter就可以
out.println("param1: "+this.getInitParameter("param1"));输出
param1: null