springmvc之restful风格CRUD

package com.zj.controller; import java.io.UnsupportedEncodingException; import java.util.HashMap; import java.util.Map; import javax.servlet.http.HttpServletRequest; import org.apache.taglibs.standard.tag.el.sql.UpdateTag; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import com.sun.corba.se.spi.orbutil.fsm.Input; import com.sun.org.apache.bcel.internal.generic.NEW; import com.zj.dao.StudentDao; import com.zj.model.Student; /** * 学生控制器类 * @author zhoujun * */ @Controller public class StudentCtrl { @Autowired private StudentDao studentDao; /** * 显示学生列表 * @param map * @return */ @RequestMapping("/student") public String list(Map<String, Object> map){ map.put("students", studentDao.getAll()); return "list"; } /** * 增加学生 * @param student * @return * @throws UnsupportedEncodingException */ @RequestMapping(value="student",method=RequestMethod.POST) public String add(Student student){ studentDao.add(student); return "redirect:/student";//重定向到 显示学生列表界面 } /** * 增加学生 页面 * @param map * @return */ @RequestMapping("/input") public String input(Map<String, Object> map){ //将性别的选项放入map中，springmvc的form:radiobuttons标签将自行解析 Map<String, String> sexMap = new HashMap<String, String>(); sexMap.put("男", "男"); sexMap.put("女", "女"); map.put("sex", sexMap); //放入一个默认的空的信息 map.put("student", new Student()); return "input"; } /** * 修改学生 界面 * @param studentId * @param map * @return */ @RequestMapping("/student/{studentId}") public String Input(@PathVariable("studentId")Integer studentId, Map<String, Object> map){ //将性别的选项放入map中，springmvc的form:radiobuttons标签将自行解析 Map<String, String> sexMap = new HashMap<String, String>(); sexMap.put("男", "男"); sexMap.put("女", "女"); map.put("sex", sexMap); map.put("student", studentDao.getById(studentId)); return "input"; } /** * 修改学生信息 * @param student * @return */ @RequestMapping(value="student",method=RequestMethod.PUT) public String Update(Student student){ studentDao.update(student); return "redirect:/student"; } /** * 删除一个学生 * @param studentId---学生ID * @return */ @RequestMapping(value = "student/{studentId}",method=RequestMethod.DELETE) public String delete(@PathVariable("studentId")Integer studentId){ studentDao.delete(studentId); return "redirect:/student"; } }