jsp参数传递问题请教
我在页面一中做连接:web2.jsp?sort=delete
在页面中取得参数:
String sort = null;
sort = (String)request.getParameter("sort");
if(sort.equals("delete"))
{
执行语句;
}
报错:::
java.lang.NullPointerException
at _jsp._manage._finance_0add__jsp._jspService(manage/finance_add.jsp:34)
at com.caucho.jsp.JavaPage.service(JavaPage.java:60)
at com.caucho.jsp.Page.pageservice(Page.java:570)
at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:159)
at com.caucho.server.webapp.WebAppFilterChain.doFilte
而
if(sort.=="delete")
{
执行语句;
}
却不能执行
请高手赐教