我创建了 Spring 4 项目来构建休息服务。所以我创建了超过 50 个休息服务，现在需要为其创建网络应用程序。所以我想重用相同的 Controller ，这样我只需要编写 View (JSP)代码。
同样，我用谷歌搜索并找到了http://www.mkyong.com/spring-mvc/spring-3-mvc-contentnegotiatingviewresolver-example/但这给了我一个错误。此外，我的项目结构如下。
那么我需要在 servlet-context.xml 中哪里编写这个配置呢？实现这一目标的最佳方式是什么以及如何实现？
主要是我只需要 Json 和 html 的输出。所以我的 http 请求有扩展名 .json 和 .jsp 就可以了。
下面是我的一个 Controller 的代码。下面是我创建 Rest 服务的方法，现在我希望使用相同的方法来为 JSP 页面提供服务器。
package com.alumini.spring.controller;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import com.alumini.spring.DAO.CourseDAO;
import com.alumini.spring.model.Alumini;
import com.alumini.spring.model.Course;
@RestController
public class CourseController {
@Autowired
private CourseDAO courseDao;
@RequestMapping(value = "/getCourseList")
public List<Course> getCourseList(@RequestParam("email") String email,@RequestParam("password") String password) {
List<Course> listCourse = courseDao.list();
List<Course> finalList= new ArrayList<Course>();
for(Course course: listCourse) {
finalList.add(course);
}
return finalList;
}
}
请帮助我，如果你们中有人之前这样做过吗？
最佳答案
package com.apmc.rest;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.codehaus.jackson.map.ObjectMapper;
import org.hibernate.SessionFactory;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestBody;
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.bind.annotation.RestController;
import com.apmc.Generic.CommonMethods;
import com.apmc.domain.Auction;
import com.apmc.domain.Commodity;
import com.apmc.jsonObjectMaker.GetEntryDetails;
import com.apmc.services.AuctionService;
import com.apmc.services.CommodityService;
@RestController
@RequestMapping("auction")
public class RestAuctionController {
List<Object[]> show_egp_for_auction;
String successMsg = "";
String errorMsg = "";
List<Commodity> listOfComm;
private List<Object[]> show_details_trd;
JSONObject msg;
@Autowired
AuctionService auctionService;
@Autowired
CommodityService commodityService;
@RequestMapping(value="/commoditySelect", method = RequestMethod.GET, headers="Accept=application/json")
public String commSelect() {
listOfComm = new ArrayList<Commodity>();
try {
listOfComm = commodityService.loadAll();
SessionFactory commSessionFactory = commodityService.getThisSessionFactory();
Map<String, String> map = new HashMap<String, String>();
map.put("comm_id", "getComm_id");
map.put("comm_name", "getComm_name");
JSONObject comm_json_Obj = CommonMethods.getJSONFromList(Commodity.class, listOfComm, commSessionFactory, "commodities", map);
return comm_json_Obj.toString();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
@RequestMapping(value = "/auctionByEntryGatePass", method = RequestMethod.POST, produces="application/json", consumes="application/json")
public @ResponseBody String check_egp(@RequestBody String json)
{
try {
show_egp_for_auction = new ArrayList<Object[]>();
JSONObject egp_no_json = new JSONObject(json);
String egp_no = (String) egp_no_json.get("egp_no");
Long comm_id = Long.parseLong(egp_no_json.get("comm_id").toString());
String comm_name = (String) egp_no_json.get("comm_name");
if(egp_no.isEmpty()) {
successMsg = "";
errorMsg = "Data is remaining or wrong.";
msg = new JSONObject();
msg.put("errorMsg", errorMsg);
msg.put("egp_no_error", "Please enter Entry Gate Pass Number");
return msg.toString();
}
show_egp_for_auction = auctionService.egp_info_for_auction(egp_no, comm_id);
successMsg = "";
errorMsg = "";
if(show_egp_for_auction.size() == 0) {
errorMsg = "This is not a valid entry gate pass either This entry gate pass have not this commodity.";
} else if(show_egp_for_auction.get(0)[7] != null) {
errorMsg = "This commodity have already auctioned.";
} else if(show_egp_for_auction.size() > 1) {
errorMsg = " New tolmapEntrybyEntryGatePass Error \n Please contact Admin and errorcode: ";
} else {
errorMsg = "";
successMsg = "Success";
}
msg = new JSONObject();
msg.put("successMsg", successMsg);
msg.put("errorMsg", errorMsg);
if(errorMsg.isEmpty()) {
GetEntryDetails GetEntryDetailsForAuc = new GetEntryDetails(comm_name,
show_egp_for_auction.get(0)[0].toString(),
show_egp_for_auction.get(0)[5].toString(),
show_egp_for_auction.get(0)[4].toString(),
show_egp_for_auction.get(0)[2].toString(),
show_egp_for_auction.get(0)[3].toString());
// return new ResponseEntity(HttpStatus.CREATED);
JSONArray egp_details = new JSONArray();
egp_details.put(msg);
egp_details.put(GetEntryDetailsForAuc.getJSON());
return egp_details.toString();
} else {
return msg.toString();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return "ERROR";
}
}
@RequestMapping(value = "/auction_confirm", method = RequestMethod.POST, produces="application/json", consumes="application/json")
public @ResponseBody String auctionConfirm(@RequestBody String auction_json)
{
successMsg = "";
errorMsg = "";
Long auc_trd_no;
Double auc_commRate;
JSONObject auction = new JSONObject(auction_json);
String auc_trd_no_error = "";
String auc_commRate_error = "";
Object a = auction.get("auc_trd_no");
Object b = auction.get("auc_commRate");
if(auction.get("auc_trd_no").toString().isEmpty()) {
auc_trd_no = 0l;
} else {
try {
auc_trd_no = Long.parseLong(auction.get("auc_trd_no").toString());
} catch (NumberFormatException nfe) {
auc_trd_no = 0l;
}
}
if(auction.get("auc_commRate").toString().isEmpty()) {
auc_commRate = 0d;
} else {
try {
auc_commRate = Double.parseDouble(auction.get("auc_commRate").toString());
} catch(NumberFormatException nfe) {
auc_commRate = 0d;
}
}
int error_counter = 0;
boolean auc_mul_comm = false;
if(auc_commRate == 0d) {
successMsg = "";
errorMsg = "Data is remaining or wrong.";
auc_commRate_error = "Please enter Auction Commodity Rate or enter valid Auction Commodity Rate.";
error_counter = 1;
}
if(auc_trd_no == 0l) {
successMsg = "";
errorMsg = "Data is remaining or wrong.";
auc_trd_no_error = "Please enter Trader Id Number or enter valid Trader Id Number.";
error_counter = 1;
}
if(error_counter == 1) {
msg = new JSONObject();
msg.put("errorMsg", errorMsg);
msg.put("auc_trd_no_error", auc_trd_no_error);
msg.put("auc_commRate_error", auc_commRate_error);
return msg.toString();
} else {
try {
show_details_trd = new ArrayList<Object[]>();
show_details_trd = auctionService.trd_check(auc_trd_no);
//logger.info("\n\n\n\n\n\n");
//logger.info(show_egp.get(0)[6].toString());
//logger.info(show_egp+" : "+show_egp.size());
if(show_details_trd.size() == 0) {
errorMsg = "This is not a valid Trader's Id number.";
} else if(show_details_trd.size() > 1) {
errorMsg = " New tolmapEntrybyEntryGatePass Error \n Please contact Admin ";
} else {
errorMsg = "";
}
if(errorMsg != "") {
successMsg = "";
auc_trd_no_error = "";
auc_commRate_error = "";
msg = new JSONObject();
msg.put("errorMsg", errorMsg);
return msg.toString();
}
} catch (Exception e) {
// TODO Auto-generated catch block
msg = new JSONObject();
msg.put("errorMsg", e.getMessage());
return msg.toString();
}
successMsg = "Entry Gate Pass submitted successfully.";
errorMsg = "";
auc_trd_no_error = "";
auc_commRate_error = "";
msg = new JSONObject();
msg.put("successMsg", successMsg);
return msg.toString();
}
}
@RequestMapping(value = "/auction_add", method = RequestMethod.POST, produces="application/json", consumes="application/json")
public @ResponseBody String saveOrUpdateAuction(@RequestBody String auction_json)
{
try {
String pattern = "yyyy-MM-dd HH:mm:ss";
SimpleDateFormat df = new SimpleDateFormat(pattern);
ObjectMapper objMapper = new ObjectMapper();
objMapper.setDateFormat(df);
Auction auction = (Auction)objMapper.readValue(auction_json, Auction.class);
auctionService.saveOrUpdate(auction, false);
successMsg = "Auctioned Successfully.";
errorMsg = "";
msg = new JSONObject();
msg.put("successMsg", successMsg);
return msg.toString();
} catch(JSONException je) {
je.printStackTrace();
successMsg = "";
errorMsg = je.getMessage();
msg = new JSONObject();
msg.put("errorMsg", errorMsg);
return msg.toString();
} catch (Exception e) {
e.printStackTrace();
successMsg = "";
errorMsg = e.getMessage();
msg = new JSONObject();
msg.put("errorMsg", errorMsg);
return msg.toString();
}
}
}关于java - 如何使用 Spring 4 Rest Controller 为 Jsp View 提供服务？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30987062/