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增加点赞功能

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This commit is contained in:
cyk
2023-07-05 17:27:39 +08:00
parent 05658e013e
commit 5f19bfa5de
5 changed files with 233 additions and 11 deletions
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2
src/com/hellogithub/service/projectService.java
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@@ -14,7 +14,7 @@ import java.util.*;
public class projectService {
private static projectDao projectDao = new projectDao();
private projectDao projectDao = new projectDao();
private categoryDao categoryDao = new categoryDao();
/**
* 按照期刊号查询

21
src/com/hellogithub/service/supprotService.java → src/com/hellogithub/service/supportService.java
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@@ -1,14 +1,15 @@
package com.hellogithub.service;
import com.hellogithub.dao.UserDao;
import com.hellogithub.dao.supportDao;
import com.hellogithub.entity.supportEntity;
public class supprotService {
public class supportService {
private supportDao supportDao = new supportDao();
public int retNum(int userId,int projectId){
private UserDao userDao = new UserDao();
public int retNum(String username,int projectId){
int num ;
supportEntity supportEntity = supportDao.selectSupport(userId,projectId);
supportEntity supportEntity = supportDao.selectSupport(userDao.selectIdByName(username),projectId);
if(supportEntity == null)
{
num =0;
@@ -19,10 +20,10 @@ public class supprotService {
return num ;
}
public String insertSupport(int userId , int projectId)
public String insertSupport(String username, int projectId)
{
String tip;
int num = supportDao.insertSupport(userId,projectId);
int num = supportDao.insertSupport(userDao.selectIdByName(username),projectId);
if(num == 1)
{
tip="点赞成功";
@@ -33,16 +34,16 @@ public class supprotService {
return tip;
}
public String deleteSupport(int userId , int projectId)
public String deleteSupport(String username, int projectId)
{
String tip;
int num = supportDao.deleteSupport(userId,projectId);
int num = supportDao.deleteSupport(userDao.selectIdByName(username),projectId);
if(num == 1)
{
tip="删除成功";
tip="取消成功";
}
else{
tip="删除失败";
tip="取消失败";
}
return tip;
}

72
src/com/hellogithub/servlet/whetherAddLikeServlet.java Normal file
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@@ -0,0 +1,72 @@
package com.hellogithub.servlet;
import com.alibaba.fastjson.JSONObject;
import com.hellogithub.entity.userEntity;
import com.hellogithub.service.supportService;
import jakarta.servlet.ServletConfig;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
@WebServlet("/whetherAddLike")
public class whetherAddLikeServlet extends HttpServlet {
private com.hellogithub.service.supportService supportService = new supportService();
@Override
public void init(ServletConfig config) throws ServletException {
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doPost(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.setCharacterEncoding("UTF-8");
resp.setContentType("text/html; charset=utf-8");
// 设置响应头允许ajax跨域访问
String curOrigin = req.getHeader("Origin");
resp.setHeader("Access-Control-Allow-Origin", curOrigin == null ? "true" : curOrigin);
resp.setHeader("Access-Control-Allow-Credentials", "true");
resp.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, HEAD");
resp.setHeader("Access-Control-Max-Age", "3600");
resp.setHeader("Access-Control-Allow-Headers", "access-control-allow-origin, authority, content-type, version-info, X-Requested-With");
resp.setContentType("application/json;charset=UTF-8");
PrintWriter writer = resp.getWriter();
String proId = req.getParameter("proId");
HttpSession session = req.getSession();
userEntity userEntity= null;
userEntity=(userEntity)session.getAttribute("user");
if(userEntity == null){
setResultError("用户未登录，无法点赞",writer);
}else{
String tip = supportService.insertSupport(userEntity.getUserName(),Integer.parseInt(proId));
writer.println(tip);
}
}
public void setResult(Integer code, String msg, PrintWriter writer) {
HashMap<String, Object> result = new HashMap<>();
result.put("code", code);
result.put("msg", msg);
String jsonString = JSONObject.toJSONString(result);
writer.println(jsonString);
writer.close();
}
public void setResultError(String msg, PrintWriter writer) {
setResult(500, msg, writer);
}
public void setResultOK(String msg, PrintWriter writer) {
setResult(200, msg, writer);
}
}

74
src/com/hellogithub/servlet/whetherCancelLikeServlet.java Normal file
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@@ -0,0 +1,74 @@
package com.hellogithub.servlet;
import com.alibaba.fastjson.JSONObject;
import com.hellogithub.entity.userEntity;
import com.hellogithub.service.supportService;
import jakarta.servlet.ServletConfig;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
@WebServlet("/whetherCancelLike")
public class whetherCancelLikeServlet extends HttpServlet {
private com.hellogithub.service.supportService supportService = new supportService();
@Override
public void init(ServletConfig config) throws ServletException {
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doPost(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.setCharacterEncoding("UTF-8");
resp.setContentType("text/html; charset=utf-8");
// 设置响应头允许ajax跨域访问
String curOrigin = req.getHeader("Origin");
resp.setHeader("Access-Control-Allow-Origin", curOrigin == null ? "true" : curOrigin);
resp.setHeader("Access-Control-Allow-Credentials", "true");
resp.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, HEAD");
resp.setHeader("Access-Control-Max-Age", "3600");
resp.setHeader("Access-Control-Allow-Headers", "access-control-allow-origin, authority, content-type, version-info, X-Requested-With");
resp.setContentType("application/json;charset=UTF-8");
PrintWriter writer = resp.getWriter();
String proId = req.getParameter("proId");
HttpSession session = req.getSession();
userEntity userEntity= null;
userEntity=(userEntity)session.getAttribute("user");
if(userEntity == null){
setResultError("用户未登录，无法点赞",writer);
}else{
String tip = supportService.deleteSupport(userEntity.getUserName(),Integer.parseInt(proId));
writer.println(tip);
}
}
public void setResult(Integer code, String msg, PrintWriter writer) {
HashMap<String, Object> result = new HashMap<>();
result.put("code", code);
result.put("msg", msg);
String jsonString = JSONObject.toJSONString(result);
writer.println(jsonString);
writer.close();
}
public void setResultError(String msg, PrintWriter writer) {
setResult(500, msg, writer);
}
public void setResultOK(String msg, PrintWriter writer) {
setResult(200, msg, writer);
}
}

75
src/com/hellogithub/servlet/whetherLikeServlet.java Normal file
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@@ -0,0 +1,75 @@
package com.hellogithub.servlet;
import com.alibaba.fastjson.JSONObject;
import com.hellogithub.entity.userEntity;
import jakarta.servlet.ServletConfig;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import com.hellogithub.service.supportService;
import jakarta.servlet.http.HttpSession;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
@WebServlet("/whetherLike")
public class whetherLikeServlet extends HttpServlet {
private supportService supportService = new supportService();
@Override
public void init(ServletConfig config) throws ServletException {
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doPost(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.setCharacterEncoding("UTF-8");
resp.setContentType("text/html; charset=utf-8");
// 设置响应头允许ajax跨域访问
String curOrigin = req.getHeader("Origin");
resp.setHeader("Access-Control-Allow-Origin", curOrigin == null ? "true" : curOrigin);
resp.setHeader("Access-Control-Allow-Credentials", "true");
resp.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, HEAD");
resp.setHeader("Access-Control-Max-Age", "3600");
resp.setHeader("Access-Control-Allow-Headers", "access-control-allow-origin, authority, content-type, version-info, X-Requested-With");
resp.setContentType("application/json;charset=UTF-8");
PrintWriter writer = resp.getWriter();
String proId = req.getParameter("proId");
HttpSession session = req.getSession();
userEntity userEntity= null;
userEntity=(userEntity)session.getAttribute("user");
if(userEntity == null)
{
writer.println(0);
}
else{
int num = supportService.retNum(userEntity.getUserName(),Integer.parseInt(proId));
writer.println(num);
}
writer.close();
}
public void setResult(Integer code, String msg, PrintWriter writer) {
HashMap<String, Object> result = new HashMap<>();
result.put("code", code);
result.put("msg", msg);
String jsonString = JSONObject.toJSONString(result);
writer.println(jsonString);
writer.close();
}
public void setResultError(String msg, PrintWriter writer) {
setResult(500, msg, writer);
}
public void setResultOK(String msg, PrintWriter writer) {
setResult(200, msg, writer);
}
}