package org.jeecg.modules.shiro.authc.aop;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.apache.shiro.authc.AuthenticationException;
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import org.apache.shiro.web.filter.authc.BasicHttpAuthenticationFilter;
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import org.jeecg.modules.shiro.authc.JwtToken;
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import org.jeecg.modules.shiro.vo.DefContants;
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import org.jeecg.modules.system.util.TenantContext;
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import org.springframework.http.HttpStatus;
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import org.springframework.web.bind.annotation.RequestMethod;
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import lombok.extern.slf4j.Slf4j;
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/**
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* @Description: 鉴权登录拦截器
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* @Author: Scott
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* @Date: 2018/10/7
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**/
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@Slf4j
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public class JwtFilter extends BasicHttpAuthenticationFilter {
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/**
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* 执行登录认证
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*
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* @param request
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* @param response
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* @param mappedValue
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* @return
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*/
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@Override
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protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) {
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try {
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executeLogin(request, response);
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return true;
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} catch (Exception e) {
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throw new AuthenticationException("Token失效，请重新登录", e);
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}
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}
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/**
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*
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*/
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@Override
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protected boolean executeLogin(ServletRequest request, ServletResponse response) throws Exception {
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HttpServletRequest httpServletRequest = (HttpServletRequest) request;
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String token = httpServletRequest.getHeader(DefContants.X_ACCESS_TOKEN);
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JwtToken jwtToken = new JwtToken(token);
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// 提交给realm进行登入，如果错误他会抛出异常并被捕获
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getSubject(request, response).login(jwtToken);
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// 如果没有抛出异常则代表登入成功，返回true
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return true;
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}
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/**
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* 对跨域提供支持
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*/
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@Override
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protected boolean preHandle(ServletRequest request, ServletResponse response) throws Exception {
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HttpServletRequest httpServletRequest = (HttpServletRequest) request;
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HttpServletResponse httpServletResponse = (HttpServletResponse) response;
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httpServletResponse.setHeader("Access-control-Allow-Origin", httpServletRequest.getHeader("Origin"));
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httpServletResponse.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,DELETE");
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httpServletResponse.setHeader("Access-Control-Allow-Headers", httpServletRequest.getHeader("Access-Control-Request-Headers"));
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// 跨域时会首先发送一个option请求，这里我们给option请求直接返回正常状态
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if (httpServletRequest.getMethod().equals(RequestMethod.OPTIONS.name())) {
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httpServletResponse.setStatus(HttpStatus.OK.value());
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return false;
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}
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//update-begin-author:taoyan date:20200708 for:多租户用到
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String tenant_id = httpServletRequest.getHeader(DefContants.TENANT_ID);
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TenantContext.setTenant(tenant_id);
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//update-end-author:taoyan date:20200708 for:多租户用到
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return super.preHandle(request, response);
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}
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}
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