Java普通类取request | session
很多人在找，在一个普通类里如何才能取系统的request或session,我也找了下，但没有，就自己实现了一下，期待需要的有缘人，希望能帮到一点点。
具体如下：
实现步骤：
1.定义一个线程类，普通的：
类里最主要的就是定义了一个参数：
private static ThreadLocal<HttpServletRequest> httpRequest = new ThreadLocal<HttpServletRequest>();
另外给了set get remove和线程相关的三个方法；
具体如下：
[java]
public class SystemRequestContext {
private static ThreadLocal<HttpServletRequest> httpRequest = new ThreadLocal<HttpServletRequest>();
private static ThreadLocal<HttpSession> session = new ThreadLocal<HttpSession>();
public static void removeHttpSession()
{
session.remove();
}
public static HttpSession getSession() {
return session.get();
}
public static void setSession(HttpSession _session) {
session.set(_session);
}
2.定义一个filter,拦截所有的请求，把request装入
[java]
SystemRequestContext
代码如下：
[java]
public void doFilter(ServletRequest req, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest)req;
SystemRequestContext.setHttpRequest(request);
SystemRequestContext.setSession(request.getSession());
try{
chain.doFilter(request, response);
}finally{
SystemRequestContext.removeHttpRequest();
SystemRequestContext.removeHttpSession();
}
}
3.如何使用：
[java]
public class UserModuleValidateTag {
public static boolean validateModule(String module)
{
HttpServletRequest request = SystemRequestContext.getHttpRequest();
if(null!=request)
System.out.println("^_^"+request);
补充：软件开发 , Java ,
