Java ServletRequest.getParameter方法代码示例

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
@Override
protected Serializable getSessionId(ServletRequest request, ServletResponse response) {
	// 如果参数中包含“__sid”参数，则使用此sid会话。 例如：http://localhost/project?__sid=xxx&__cookie=true
	String sid = request.getParameter("__sid");
	if (StringUtils.isNotBlank(sid)) {
		// 是否将sid保存到cookie，浏览器模式下使用此参数。
		if (WebUtils.isTrue(request, "__cookie")) {
			HttpServletRequest rq = (HttpServletRequest) request;
			HttpServletResponse rs = (HttpServletResponse) response;
			Cookie template = getSessionIdCookie();
			Cookie cookie = new SimpleCookie(template);
			cookie.setValue(sid);
			cookie.saveTo(rq, rs);
		}
		// 设置当前session状态
		request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID_SOURCE, ShiroHttpServletRequest.URL_SESSION_ID_SOURCE); // session来源与url
		request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID, sid);
		request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID_IS_VALID, Boolean.TRUE);
		return sid;
	} else {
		return super.getSessionId(request, response);
	}
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
@Override
protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception {


    String error = request.getParameter("error");
    String errorDescription = request.getParameter("error_description");
    if(!StringUtils.isEmpty(error)) {//如果服务端返回了错误
        WebUtils.issueRedirect(request, response, failureUrl + "?error=" + error + "error_description=" + errorDescription);
        return false;
    }

    Subject subject = getSubject(request, response);
    if(!subject.isAuthenticated()) {
        if(StringUtils.isEmpty(request.getParameter(authcCodeParam))) {
            //如果用户没有身份验证，且没有auth code，则重定向到服务端授权
            saveRequestAndRedirectToLogin(request, response);
            return false;
        }
    }

    return executeLogin(request, response);
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
protected boolean onAccessDenied(ServletRequest request,
		ServletResponse response) throws Exception {
	String backUrl = request.getParameter("backUrl");
	saveRequest(request, backUrl,
			getDefaultBackUrl(WebUtils.toHttp(request)));
	return false;
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
@Override
public void doFilter(ServletRequest request, ServletResponse response,
    FilterChain filterChain) throws IOException, ServletException {
  final String userName = request.getParameter("user.name");
  ServletRequest requestModified =
    new HttpServletRequestWrapper((HttpServletRequest) request) {
    @Override
    public String getRemoteUser() {
      return userName;
    }
  };
  filterChain.doFilter(requestModified, response);
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
/**
 * Get a float parameter, with a fallback value. Never throws an exception.
 * Can pass a distinguished value as default to enable checks of whether it was supplied.
 * @param request current HTTP request
 * @param name the name of the parameter
 * @param defaultVal the default value to use as fallback
 */
public static float getFloatParameter(ServletRequest request, String name, float defaultVal) {
	if (request.getParameter(name) == null) {
		return defaultVal;
	}
	try {
		return getRequiredFloatParameter(request, name);
	}
	catch (ServletRequestBindingException ex) {
		return defaultVal;
	}
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
@Override
public void doFilter(final ServletRequest servletRequest, final ServletResponse servletResponse, final FilterChain filterChain) throws IOException, ServletException {
    String sessionId = servletRequest.getParameter("sessionId");
    if (sessionId != null) {
        MDC.put("SessionId", sessionId);
    }
    filterChain.doFilter(servletRequest, servletResponse);
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
public static int verify(ServletRequest request) {
    int gtResult = 0;
    try {
        GeetestLib gtSdk = new GeetestLib(GeetestConfig.getGeetest_id(), GeetestConfig.getGeetest_key(),
                GeetestConfig.isnewfailback());
        String challenge = request.getParameter(GeetestLib.fn_geetest_challenge);
        String validate = request.getParameter(GeetestLib.fn_geetest_validate);
        String seccode = request.getParameter(GeetestLib.fn_geetest_seccode);
        Object StatusSessionKey = RequestUtil.getCurrentHttpServletRequest().getSession().getAttribute(gtSdk.gtServerStatusSessionKey);
        if (StatusSessionKey == null) {
            return 0;
        }
        int gt_server_status_code = (Integer) StatusSessionKey;
        //自定义参数,可选择添加
        HashMap<String, String> param = new HashMap<String, String>();
        param.put("client_type", "web");
        param.put("ip_address", request.getRemoteAddr());
        if (gt_server_status_code == 1) {
            gtResult = gtSdk.enhencedValidateRequest(challenge, validate, seccode, param);
        } else {
            System.out.println("failback:use your own server captcha validate");
            gtResult = gtSdk.failbackValidateRequest(challenge, validate, seccode);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return gtResult;
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
/**
 * Get a String parameter, or {@code null} if not present.
 * @param request current HTTP request
 * @param name the name of the parameter
 * @return the String value, or {@code null} if not present
 * @throws ServletRequestBindingException a subclass of ServletException,
 * so it doesn't need to be caught
 */
public static String getStringParameter(ServletRequest request, String name)
		throws ServletRequestBindingException {

	if (request.getParameter(name) == null) {
		return null;
	}
	return getRequiredStringParameter(request, name);
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
private boolean isGoodRequest(ServletRequest request) {
	// Trigger parsing of parameters
	request.getParameter("none");
	// Detect failure
	if (request.getAttribute(Globals.PARAMETER_PARSE_FAILED_ATTR) != null) {
		return false;
	}
	return true;
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
public static void introspect(Object bean, ServletRequest request)
                              throws JasperException
{
    Enumeration<String> e = request.getParameterNames();
    while ( e.hasMoreElements() ) {
        String name  = e.nextElement();
        String value = request.getParameter(name);
        introspecthelper(bean, name, value, request, name, true);
    }
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
/**
 * Get a double parameter, with a fallback value. Never throws an exception.
 * Can pass a distinguished value as default to enable checks of whether it was supplied.
 * @param request current HTTP request
 * @param name the name of the parameter
 * @param defaultVal the default value to use as fallback
 */
public static double getDoubleParameter(ServletRequest request, String name, double defaultVal) {
	if (request.getParameter(name) == null) {
		return defaultVal;
	}
	try {
		return getRequiredDoubleParameter(request, name);
	}
	catch (ServletRequestBindingException ex) {
		return defaultVal;
	}
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
public static String getRequiredParameter(ServletRequest request, String parameterName) {
	String rep = request.getParameter(parameterName);
	if (rep == null) {
		throw new IllegalArgumentException("The parameter '" + parameterName + "' is required!");
	}
	return rep;
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
@Override
public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
	try {
		if (req instanceof HttpServletRequest) {
			HttpServletRequest request = (HttpServletRequest)req;
			String locale = null;
			
			// Try HTTP header, Accept-Language field
			if (iUseBrowserSettings)
				locale = request.getHeader("Accept-Language");
			
			// Try locale parameter (use http session to store)
			if (req.getParameter("locale") != null) {
				locale = req.getParameter("locale");
				request.getSession().setAttribute("unitime.locale", locale);
			} else if (request.getSession().getAttribute("unitime.locale") != null) {
				locale = (String)request.getSession().getAttribute("unitime.locale");
			}
			
			// Fall back to unitime.locale
			if (locale == null) {
				locale = ApplicationProperty.Locale.value();
				
				UserContext user = getUser();
				if (user != null)
					locale = user.getProperty(ApplicationProperty.Locale.key(), locale);
			}
			
			Localization.setLocale(locale);
		}
		chain.doFilter(req, resp);
	} finally {
		Localization.removeLocale();
		Formats.removeFormats();
	}
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
/**
 * Get an int parameter, with a fallback value. Never throws an exception.
 * Can pass a distinguished value as default to enable checks of whether it was supplied.
 * @param request current HTTP request
 * @param name the name of the parameter
 * @param defaultVal the default value to use as fallback
 */
public static int getIntParameter(ServletRequest request, String name, int defaultVal) {
	if (request.getParameter(name) == null) {
		return defaultVal;
	}
	try {
		return getRequiredIntParameter(request, name);
	}
	catch (ServletRequestBindingException ex) {
		return defaultVal;
	}
}
 

import javax.servlet.ServletRequest; //导入方法依赖的package包/类
/** update table content from given request */
public void update(ServletRequest request) {
	if (getModel().isExactTime()) {
		int dayCode = 0;
		for (int i=0;i<Constants.DAY_CODES.length;i++) {
			if (request.getParameter(iName+"_d"+i)!=null)
				dayCode += Constants.DAY_CODES[i];
		}
		int startSlot = -1;
		try {
			if (request.getParameter(iName+"_hour")!=null) {
				int hour = Integer.parseInt(request.getParameter(iName+"_hour"));
				if (hour==12) hour=0;
				int min = Integer.parseInt(request.getParameter(iName+"_min")); 
				boolean morn = (Integer.parseInt(request.getParameter(iName+"_morn"))==1);
				int startTime = ((hour+(morn?0:12))%24)*60 + min;
				startSlot = (startTime - Constants.FIRST_SLOT_TIME_MIN) / Constants.SLOT_LENGTH_MIN;
			}
		} catch (Exception e) {}
		getModel().setExactDays(dayCode);
		getModel().setExactStartSlot(startSlot);
		return;
	} else {
    	for (int d=0;d<getModel().getNrDays();d++) {
    		for (int t=0; t<getModel().getNrTimes();t++) {
    			String prefStr = request.getParameter(iName + "_req_" + d + "_" + t);
    			iModel.setPreference(d, t, (prefStr==null?getModel().getDefaultPreference():prefStr));
    		}
    	}
	}
}