基于SSM实现校园互助论坛平台

package com.spring.controller;
import com.jntoo.db.*;
import com.jntoo.db.utils.*;
import com.spring.dao.*;
import com.spring.entity.*;
import com.spring.service.*;
import com.spring.util.*;
import java.util.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
/**
 * 管理员 模块访问入口
 */
@Controller
public class AdminsController extends BaseController {
    @Autowired
    private AdminsMapper dao;
    @Autowired
    private AdminsService service;
    /**
     *  后台列表页
     *
     */
    @RequestMapping("/admins_list")
    public String list() {
        // 检测是否有登录，没登录则跳转到登录页面
        if (!checkLogin()) {
            return showError("尚未登录", "./login.do");
        }
        String order = Request.get("order", "id"); // 获取浏览器上地址栏参数 order  如果没有则设置为id
        String sort = Request.get("sort", "desc"); // 获取浏览器上地址栏参数 sort  如果没有则设置为desc
        SelectExample example = new SelectExample(); //  创建一个搜索类
        String where = " 1=1 "; // 创建初始条件为：1=1
        where += getWhere(); // 从方法中获取url 上的参数，并写成 sql条件语句
        example.setWhere(where); // 将条件写进sql里面
        example.setOrder(order + " " + sort); // 设置查询的排序情况
        int page = request.getParameter("page") == null ? 1 : Integer.valueOf(request.getParameter("page")); // 获取前台提交的URL参数 page  如果没有则设置为1
        page = Math.max(1, page); // 取两个数的最大值，防止page 小于1
        List<Admins> list = service.selectPage(example, page, 12); // 获取当前页的行数
        // 将列表写给界面使用
        assign("list", list);
        assign("orderby", order); // 把当前排序结果写进前台
        assign("sort", sort); // 把当前排序结果写进前台
        assign("where", where); // 把当前条件写给前台
        return "admins_list"; // 使用视图文件：WebRoot\admins_list.jsp
    }
    /**
     *  获取前台搜索框填写的内容,并组成where 语句
     */
    public String getWhere() {
        String where = " ";
        // 以下是判断搜索框中是否有输入内容，判断是否前台是否有填写相关条件，符合则写入sql搜索语句
        if (!Request.get("username").equals("")) {
            where += " AND username LIKE '%" + Request.get("username") + "%' ";
        }
        return where;
    }
    @RequestMapping("/admins_add")
    public String add() {
        if (!checkLogin()) {
            return showError("尚未登录", "./");
        }
        return "admins_add";
    }
    @RequestMapping("/admins_updt")
    public String updt() {
        int id = Request.getInt("id");
        // 获取行数据，并赋值给前台jsp页面
        Admins mmm = service.find(id);
        request.setAttribute("mmm", mmm);
        request.setAttribute("updtself", 0);
        return "admins_updt";
    }
    @RequestMapping("/admins_updtself")
    public String updtself() {
        // 更新个人资料
        int id = (int) request.getSession().getAttribute("id");
        Admins mmm = service.find(id);
        request.setAttribute("mmm", mmm);
        request.setAttribute("updtself", 1);
        return "admins_updtself";
    }
    /**
     * 添加内容
     * @return
     */
    @RequestMapping("/adminsinsert")
    public String insert() {
        String tmp = "";
        Admins post = new Admins(); // 创建实体类
        // 设置前台提交上来的数据到实体类中
        post.setUsername(Request.get("username"));
        post.setPwd(Request.get("pwd"));
        service.insert(post); // 插入数据
        int charuid = post.getId().intValue();
        return showSuccess("保存成功", Request.get("referer").equals("") ? request.getHeader("referer") : Request.get("referer"));
    }
    /**
     * 更新内容
     * @return
     */
    @RequestMapping("/adminsupdate")
    public String update() {
        // 创建实体类
        Admins post = new Admins();
        // 将前台表单数据填充到实体类
        if (!Request.get("username").equals("")) post.setUsername(Request.get("username"));
        if (!Request.get("pwd").equals("")) post.setPwd(Request.get("pwd"));
        post.setId(Request.getInt("id"));
        service.update(post); // 更新数据
        int charuid = post.getId().intValue();
        if (Request.getInt("updtself") == 1) {
            return showSuccess("保存成功", "admins_updtself.do");
        }
        return showSuccess("保存成功", Request.get("referer")); // 弹出保存成功，并跳转到前台提交的 referer 页面
    }
    /**
     *  删除
     */
    @RequestMapping("/admins_delete")
    public String delete() {
        if (!checkLogin()) {
            return showError("尚未登录");
        }
        int id = Request.getInt("id"); // 根据id 删除某行数据
        Map map = Query.make("admins").find(id);
        service.delete(id); // 根据id 删除某行数据
        return showSuccess("删除成功", request.getHeader("referer")); //弹出删除成功，并跳回上一页
    }
}

package com.spring.controller;
import com.alibaba.fastjson.*;
import com.jntoo.db.*;
import com.jntoo.db.utils.*;
import com.spring.dao.*;
import com.spring.entity.*;
import com.spring.service.*;
import com.spring.util.*;
import java.util.List;
import java.util.Map;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
/**
 * 公共路由
 */
@Controller
public class CommonController extends BaseController {
    /**
     * 使用ajax 检测某表中某个字段是否已存在，已存在则无法提交
     * @return
     */
    @RequestMapping(value = "/checkno")
    @ResponseBody
    public String checkon() {
        String table = request.getParameter("table");
        String col = request.getParameter("col");
        String checktype = request.getParameter("checktype");
        String value = request.getParameter(col);
        // 检测新添加的
        if (checktype.equals("insert")) {
            if (Query.make(table).where(col, value).count() > 0) {
                return "false";
            } else {
                return "true";
            }
            // 检测更新的
        } else if (checktype.equals("update")) {
            String id = request.getParameter("id") == null ? "" : request.getParameter("id");
            if (Query.make(table).where(col, value).where("id", "neq", id).count() > 0) {
                return "false";
            } else {
                return "true";
            }
        }
        return "false";
    }
    /**
     * 审核数据，将是否审核改为已审核状态，点击一下 是 则变否， 点击一下 否 变为是
     * @return
     */
    @RequestMapping("/sh")
    @ResponseBody
    public String sh() {
        String yuan = request.getParameter("yuan");
        String id = request.getParameter("id");
        String tablename = request.getParameter("tablename");
        String sql = "";
        if (yuan.equals("是")) {
            sql = "update " + tablename + " set issh='否' where id=" + id;
        } else {
            sql = "update " + tablename + " set issh='是' where id=" + id;
        }
        DB.execute(sql);
        return "<script>location.href='" + request.getHeader("Referer") + "';</script>";
    }
    /**
     * 通过ajax获取表的某行数据
     * @return
     */
    @RequestMapping("/tableAjax")
    @ResponseBody
    public String tableFind() {
        String table = request.getParameter("table");
        String id = request.getParameter("id");
        Map map = Query.make(table).where("id", id).find();
        //JSONObject json = JSONObject.parse(map);
        return JSON.toJSONString(map); //.toString();
    }
    /**
     * 搜索下拉某表的数据
     * @return
     */
    @RequestMapping("/selectUpdateSearch")
    @ResponseBody
    public String selectUpdateSearch() {
        String table = Request.get("table");
        Query query = Query.make(table);
        String limit = "50";
        JSONObject where = JSON.parseObject(Request.get("where"));
        for (Map.Entry entry : where.entrySet()) {
            String key = (String) entry.getKey();
            Object value = entry.getValue();
            if ("limit".equals(key)) {
                limit = String.valueOf(value);
            } else {
                if (value instanceof JSONObject) {
                    JSONObject w = (JSONObject) value;
                    query.where(key, w.getString("exp"), w.getString("value"));
                } else if (value instanceof JSONArray) {
                    JSONArray w = (JSONArray) value;
                    query.where(key, (String) w.get(0), w.get(1));
                } else {
                    query.where(key, value);
                }
            }
        }
        List list = query.order("id desc").limit(limit).select();
        return JSON.toJSONString(list);
    }
}