springMVC-HttpEntity（ResponseEntity）demo

package com.hg.controller; import java.util.ArrayList; import java.util.Date; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; import javax.servlet.http.HttpServletRequest; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.HttpEntity; import org.springframework.http.HttpStatus; import org.springframework.http.ResponseEntity; import org.springframework.stereotype.Controller; import org.springframework.util.LinkedMultiValueMap; import org.springframework.util.MultiValueMap; 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.ResponseBody; import org.springframework.web.servlet.ModelAndView; import com.hg.domain.User; import com.hg.service.UserService; /** * * @ClassName: LoginController * @Description: 登录controller * @Description:跳转到登录界面 */ @RequestMapping("/httpentitydemo") @Controller public class EntityController{ @Autowired private UserService userService; @RequestMapping("/showUser") public ModelAndView toShowUser(){ User user = userService.selectByPrimaryKey(1); String string = userService.addString(); ModelAndView mv = new ModelAndView("user01"); mv.addObject("user", user); mv.addObject("ok", "ok01"); mv.addObject("string", string); System.out.println(user.getUid()); System.out.println(user.getUname()); System.out.println(user.getUpassword()); System.out.println(user.getUemail()); return mv; } @RequestMapping("/getEntity") @ResponseBody public HttpEntity<Map<String,Object>> responseEntity(){ Map<String,Object> map = new HashMap<String,Object>(); map.put("message", "Hello Wrold"); HttpEntity httpEntity = new HttpEntity<Map<String,Object>>(map); return httpEntity; } @RequestMapping("/getEntity01") @ResponseBody public HttpEntity<Map<String,Object>> getEntity01(){ Map<String,Object> map = new HashMap<String,Object>(); map.put("message", "Hello Wrold"); map.put("message01", "Hello Wrold01"); //MultiValueMap<String, List<String>> headers = new LinkedMultiValueMap<String, List<String>>(); MultiValueMap<String, String> headers = new LinkedMultiValueMap<String, String>(); headers.add("spring", "spring"); MultiValueMap mailMap1 = new LinkedMultiValueMap(); HttpEntity httpEntity = new HttpEntity<Map<String,Object>>(map,headers); return httpEntity; } @RequestMapping("/getEntity02") @ResponseBody public HttpEntity<List<User>> HttpEntity02(){ //Map<String,Object> map = new HashMap<String,Object>(); //map.put("message", "Hello Wrold"); //return new ResponseEntity<Map<String,Object>>(map, HttpStatus.OK); User user1 = new User(01,"zhangsan01","12301","zhangsan01@33.com"); //User user2 = new User(02,"zhangsan02","12302","zhangsan02@33.com"); //User user3 = new User(03,"zhangsan03","12303","zhangsan03@33.com"); List<User> list1 = new ArrayList<User>(); list1.add(user1); //list1.add(user2); //list1.add(user3); return new ResponseEntity<List<User>>(list1, HttpStatus.OK); } @RequestMapping("/toHttpEntity") @ResponseBody public ModelAndView toHttpEntity(){ ModelAndView mv = new ModelAndView("index01"); return mv; } /*@RequestMapping("/getEntity02") @ResponseBody public ResponseEntity<List<User>> responseEntity02(){ //Map<String,Object> map = new HashMap<String,Object>(); //map.put("message", "Hello Wrold"); //return new ResponseEntity<Map<String,Object>>(map, HttpStatus.OK); User user1 = new User(01,"zhangsan01","12301","zhangsan01@33.com"); User user2 = new User(02,"zhangsan02","12302","zhangsan02@33.com"); User user3 = new User(03,"zhangsan03","12303","zhangsan03@33.com"); List<User> list1 = new ArrayList<User>(); list1.add(user1); list1.add(user2); list1.add(user3); return new ResponseEntity<List<User>>(list1, HttpStatus.OK); } @RequestMapping("/getEntity03") @ResponseBody public ResponseEntity<Set<User>> responseEntity03(){ User user1 = new User(01,"Szhangsan01","S12301","Szhangsan01@33.com"); User user2 = new User(02,"Szhangsan02","S12302","Szhangsan02@33.com"); User user3 = new User(03,"Szhangsan03","S12303","Szhangsan03@33.com"); Set set1 = new HashSet(); set1.add(user1); set1.add(user2); set1.add(user3); return new ResponseEntity<Set<User>>(set1, HttpStatus.OK); } */ }