ps-credit/src/main/java/com/uas/credit/config/AuthorizeInterceptor.java

package com.uas.credit.config;

import com.uas.credit.dao.UserDao;
import com.uas.credit.model.User;
import com.uas.credit.util.ContextUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.ui.ModelMap;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;

/**
 * @author liuam
 * @since 2018/6/25 0025 下午 18:27
 */
public class AuthorizeInterceptor extends HandlerInterceptorAdapter {

    private UserDao userDao;
    {
        userDao = ContextUtils.getBean(UserDao.class);
    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String userUUString = request.getParameter("userUU");
        String enUUString = request.getParameter("enUU");
        String password = request.getParameter("password");
        ModelMap modelMap = new ModelMap();
        modelMap.put("success", "false");
        // 判断 userUUString、enUUString、passwordString 是否为数字
        if (!StringUtils.isNumeric(userUUString) || !StringUtils.isNumeric(enUUString)) {
            PrintWriter writer = response.getWriter();
            modelMap.put("message", "userUU 和 enUU 只能为数字");
            writer.print(modelMap);
            writer.flush();
            return false;
        }
        if (password == null) {
            PrintWriter writer = response.getWriter();
            modelMap.put("message", "password 不能为空");
            writer.print(modelMap);
            writer.flush();
            return false;
        }
        long userUU = Long.parseLong(userUUString);
        long enUU = Long.parseLong(enUUString);
        User user = userDao.findByUserUUAndEnUUAndPassword(userUU, enUU, password);
        if (user == null) {
            PrintWriter writer = response.getWriter();
            modelMap.put("message", "用户不存在!");
            writer.print(modelMap);
            writer.flush();
            return false;
        }
        return true;
    }

}