MemberInterceptor.java
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package com.sincere.student.access;
import com.alibaba.fastjson.JSON;
import com.sincere.student.dto.BaseDto;
import com.sincere.student.utils.ResultException;
import com.sincere.student.utils.TokenUtils;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
public class MemberInterceptor extends HandlerInterceptorAdapter {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
if (handler instanceof HandlerMethod) {
HandlerMethod myHandlerMethod = (HandlerMethod) handler;
Method method = myHandlerMethod.getMethod();
Annotation methodAnnotation = method.getAnnotation(MemberAccess.class);//方法上有该标记
if (methodAnnotation != null) {
boolean isLogin = isLogin(request);
if (isLogin) {
return true;
} else {//未登录
//Ajax请求返回JSON
BaseDto repVo = new BaseDto();
repVo.setSuccess(false);
repVo.setMessage("请先登录");
String data = JSON.toJSONString(repVo);
response.setHeader("content-type", "text/html;charset=UTF-8");
OutputStream out = response.getOutputStream();
out.write(data.getBytes("UTF-8"));
return false;
}
}
}
return true;
}
private boolean isLogin(HttpServletRequest request) throws Exception {
try {
String token = request.getHeader("X-Authorization");
if (token != null) {
try {
TokenUtils.validToken(token);
return true;
} catch (ResultException e) {
}
}
} catch (Exception e) {
return false;
}
return false;
}
}