JavaEE 课程设计 SSM框架 房屋租赁系统

package cn.controller; import java.io.File; import java.io.IOException; import java.util.Date; import java.util.List; import java.util.UUID; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; import cn.common.Pages; import cn.common.PathUtils; import cn.entity.TDistrict; import cn.entity.THouse; import cn.entity.TPic; import cn.entity.TStreet; import cn.entity.TUser; import cn.query.HouseQuery; import cn.service.DistrictService; import cn.service.HouseService; import cn.service.PicService; @Controller @RequestMapping("/house") public class HouseController { @Resource() @Qualifier("districtService") // @Resource() @Qualifier("")这两个注解相当于构造方法中把实例赋值给该属性 private DistrictService districtService; @Resource @Qualifier("houseService") private HouseService houseService; @Resource @Qualifier("picService") private PicService picService; // 查询信息 @RequestMapping(value = "/list") public String list(Model model, HouseQuery houseQuery, HttpServletRequest request) { // 调用service方法查询集合 Pages<THouse> pages = houseService.getHousePages(houseQuery); // 将查询结果存储到model model.addAttribute("pages", pages); // 查询区的集合 List<TDistrict> districts = districtService.queryAllDistrict(); // 将查询区的集合结果存储起来 request.getSession().setAttribute("districts", districts); // 根据区ID查询街道集合 List<TStreet> streets = null; if (null != houseQuery.getDistrictId()) { streets = districtService.getStreetsByDistrictId(houseQuery.getDistrictId()); } // 将街道存储 request.getSession().setAttribute("streets", streets); // 存储查询条件进行回显 model.addAttribute("houseQuery", houseQuery); // 页面跳转 - 返回逻辑视图名 return "houseList"; } //跳转到add页面 @RequestMapping(value = "/add") public String save(Model model) { return "houseAdd"; } // 保存 @RequestMapping(value = "/save") public String save(@RequestParam MultipartFile img, Model model, THouse house, HttpServletRequest request) throws IOException { // 上传的图片 TPic pic = new TPic(); if (img.getSize() != 0) { // // 获取图片上传的真实路径 // String realPath = request.getSession().getServletContext().getRealPath("src/main/webapp/resource/upload"); // // String imgFileName = img.getOriginalFilename(); // String suffix = imgFileName.substring(imgFileName.indexOf("."));// 后缀名 // String noRepeatName = UUID.randomUUID().toString() + suffix;// 通过UUID加后缀名，组成不会重复的文件名 // // // 根据保存的图片路径构造File文件对象 // String srcPath = realPath + "/" + noRepeatName; // File file = new File(srcPath); // // 保存到数据库时的路径 // String saveToDBpath = "/resource/upload" + "/" + noRepeatName; // // 写入文件 // img.transferTo(file); //start String path = PathUtils.getPath(request, "upload", img.getOriginalFilename()); System.out.println(path); img.transferTo(new File(path)); //end // 图片描述信息 String imgDesc = request.getParameter("imgDesc"); if (null != imgDesc && !"".equals(imgDesc)) { pic.setTitle(imgDesc); } // 图片保存的路径 pic.setUrl(PathUtils.datapath); } // 页面上传进来的对象house, 后台再添加一些属性 house.setAdddate(new Date()); TUser user = (TUser) request.getSession().getAttribute("user"); house.setUserid(user.getId()); String msg = ""; if (houseService.findHouse(house)) { msg = "此房子已存在"; } else { // 把 house 添加到数据库 int i = houseService.addHouse(house); if(i > 0){ msg = "添加房子成功"; }else{ msg = "添加房子失败"; } if (img.getSize() != 0) { pic.setHouseid(house.getId()); // 把 pic 添加到数据库，pic依赖于house，pic对象有两个字段，一个是url，一个是 houseid // houseid 是通过先把 house 加入到数据库后再获取到的 picService.addPic(pic); } } model.addAttribute("msg", msg); //request.getSession().setAttribute("msg", msg); // 页面跳转 - 返回逻辑视图名 return "forward:/house/list"; } @RequestMapping(value = "/delete/{id}") // REST 风格 public String delete(@PathVariable Long id,Model model,HttpServletRequest request) { String msg = ""; int i = houseService.deleteHouse(id); if(i > 0){ msg = "删除成功"; }else{ msg = "删除失败"; } model.addAttribute("msg", msg); //request.getSession().setAttribute("msg", msg); return "forward:/house/list"; } //修改页面 @RequestMapping(value = "/modify/{id}") // REST 风格 public String modify(@PathVariable Long id, Model model, HttpServletRequest request) { THouse house = houseService.getHouseById(id); // 查询区的集合 List<TDistrict> districts = districtService.queryAllDistrict(); // 将查询区的集合结果存储起来 request.getSession().setAttribute("districts", districts); // 根据区ID查询街道集合 List<TStreet> streets = null; if (null != house.getDistrict().getId()) { streets = districtService.getStreetsByDistrictId(house.getDistrict().getId()); } // 将街道存储 request.getSession().setAttribute("streets", streets); model.addAttribute("house", house); return "houseModify"; } //修改页面，提交修改后的house @RequestMapping(value = "/modify") // REST 风格 public String modify(Model model, THouse house, HttpServletRequest request) { house.setPubdate(new Date()); int i = houseService.updateHouse(house); String msg = ""; if(i > 0){ msg = "修改成功"; }else{ msg = "修改失败"; } model.addAttribute("msg", msg); //request.getSession().setAttribute("msg", msg); return "forward:/house/list"; } /* * @responseBody 注解的作用是将controller的方法返回的对象通过适当的转换器转换为指定的格式之后， * 写入到response对象的body区，通常用来返回JSON数据或者是XML数据， * 需要注意的呢，在使用此注解之后不会再走试图处理器，而是直接将数据写入到输入流中， 他的效果等同于通过response对象输出指定格式的数据。 */ @ResponseBody @RequestMapping(value = "/getStreetByAjax") public List<TStreet> getStreetByAjax(Long districtId) { List<TStreet> streets = districtService.getStreetsByDistrictId(districtId); return streets; } }