关于统一表达式语言的隐式对象，Java EE 5教程写道:

Implicit Objects The JSP expression language defines a set of implicit objects: pageContext: The context for the JSP page. Provides access to various objects including: servletContext: The context for the JSP page’s servlet and any web components contained in the same application. See Accessing the Web Context. session: The session object for the client. See Maintaining Client State. request: The request triggering the execution of the JSP page. See Getting Information from Requests. response: The response returned by the JSP page. See Constructing Responses. In addition, several implicit objects are available that allow easy access to the following objects: param: Maps a request parameter name to a single value paramValues: Maps a request parameter name to an array of values header: Maps a request header name to a single value headerValues: Maps a request header name to an array of values cookie: Maps a cookie name to a single cookie initParam: Maps a context initialization parameter name to a single value Finally, there are objects that allow access to the various scoped variables described in Using Scope Objects. pageScope: Maps page-scoped variable names to their values requestScope: Maps request-scoped variable names to their values sessionScope: Maps session-scoped variable names to their values applicationScope: Maps application-scoped variable names to their values

有趣的部分是粗体:)

所以，为了回答你的问题，你应该能够像这样访问它(使用EL):

${param.accountID}

或者，使用JSP scriptlet(不推荐):

<%
    String accountId = request.getParameter("accountID");
%>

示例:您想删除带有subject_id的主题记录

@RequestMapping(value="subject_setup/delete/{subjectid}",method = RequestMethod.GET)
public ModelAndView delete(@PathVariable int subjectid) {
    subjectsDao.delete(subjectid);
    return new ModelAndView("redirect:/subject_setup");
}

该参数将用于查询的输入

public int delete(int subjectid) {
    String sql = "update tbl_subject set isdeleted= '1' where id = "+subjectid+"";
    return template.update(sql);
}

www.somesite.com/Transaction_List.jsp ? accountID = 5

对于这个URL，有一个方法调用请求。java中的getParameter，如果你想在这里将一个数字转换为int，类似于将字符串值转换为string。所以根据你的要求，只需要复制到下一页的下面一行，

int  accountId =(int)request.getParameter("accountID");

您现在可以在整个页面中使用accountId调用这个值。

这里accountId是参数的名称，你也可以使用它得到多个参数，但这是行不通的。它将只与GET方法工作，如果你点击POST请求，那么他们将是一个错误。

希望这对你有帮助。

如果我可以在这里补充评论的话……

< c: value = " $ {param.accountID} " > < / c: >

对我不起作用(它输出0)。

相反，这是可行的:

< c: value = " ${参数[' accountID ']} " > < / c: >

使用EL (JSP表达式语言):

$ {param.accountID}

request.getParameter("accountID")就是你要找的。这是Java Servlet API的一部分。更多信息请参见http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/ServletRequest.html。