SpringBoot實現(xiàn)登錄攔截器的方法詳解
在項目目錄下建立兩個包:inter 與contsfig

在inter新建層中實現(xiàn)HandlerInterceptor的繼承類

package com.example.gameboxadminserver.inter;
import com.example.gameboxadminserver.entity.User;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class MyInterceptor implements HandlerInterceptor {
//在preHandle方法中進行登錄判斷
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
HttpSession session = request.getSession();
//session.setAttribute("adminName","o");
String adminName = (String)session.getAttribute("adminName");//獲取儲存的session
//System.out.println(adminName);
if(adminName==null){
System.out.println("請先登陸!");
return false;
}
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
//System.out.println("執(zhí)行了TestInterceptor的postHandle方法");
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
}
}
在conrsfig中新增WebMvcConfiguer的繼承類LoginConfig

實現(xiàn)addInterceptors方法
package com.example.gameboxadminserver.contsfig;
import com.example.gameboxadminserver.inter.MyInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class LoginConfig implements WebMvcConfigurer {
@Override
public void addInterceptors(InterceptorRegistry registry) {
//注冊攔截器
InterceptorRegistration registration = registry.addInterceptor(new MyInterceptor());
registration.addPathPatterns("/**"); //所有路徑都被攔截
registration.excludePathPatterns(
//添加不攔截路徑
"/admin/adminLogin",
);
}
}
在serviceImpl層
實現(xiàn)登錄邏輯并保存session
Httpsession session
session.setAttribute(“name”,value);
package com.example.gameboxadminserver.service.impl;
import com.example.gameboxadminserver.entity.Admin;
import com.example.gameboxadminserver.entity.Result;
import com.example.gameboxadminserver.entity.ResultUtil;
import com.example.gameboxadminserver.mapper.AdminMapper;
import com.example.gameboxadminserver.service.AdminService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
/**
* <p>
* 服務實現(xiàn)類
* </p>
*
* @author firstGroup
* @since 2020-10-28
*/
@Service
public class AdminServiceImpl extends ServiceImpl<AdminMapper, Admin> implements AdminService {
@Autowired
AdminMapper adminMapper;
@Override
public Result adminLogin(HttpSession session,String adminName, String adminPwd) {
Admin admin = adminMapper.adminLogin(adminName,adminPwd);
if(admin!=null){
session.setAttribute("adminName",adminName);
return ResultUtil.success("登陸成功!");
}
return ResultUtil.error(2000,"登陸失敗");
}
}
這樣就寫完啦
功能測試
登陸失敗

無法訪問其他接口

登錄成功

成功訪問其他接口
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