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Most people do not understand the knowledge points of this article "Java how to achieve life travel sharing platform", so the editor summarizes the following content, detailed content, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this "Java how to achieve life travel sharing platform" article.

I. configuration of the project running environment:

Jdk1.8 + Tomcat8.5 + mysql + Eclispe (both supported by IntelliJ IDEA,Eclispe,MyEclispe,Sts)

Project technology:

Springboot+ SpringMVC + JPA+ Jsp + Html+ JavaScript + JQuery + Ajax + maven etc.

Comment on the business controller:

/ * * comment Controller * @ author yy * / @ RestController@RequestMapping ("/ comment") public class CommentController {@ Resource private CommentService commentService; @ Resource private ArticleService articleService; @ Resource private ReplyService replyService / * pagination query comments * @ param comment * @ param page * @ param pageSize * @ return * / @ RequestMapping ("/ list") public Map commentList (Comment comment, @ RequestParam (value = "page", required = false) Integer page, @ RequestParam (value = "pageSize", required = false) Integer pageSize) {List commentList = commentService.list (comment, null, null) Page-1, pageSize, null) Long total = commentService.getCount (comment, null, null, null); int totalPage = (int) (total% pageSize = = 0? Total / pageSize: total / pageSize + 1); Map resultMap = new HashMap (); resultMap.put ("totalPage", totalPage); resultMap.put ("data", commentList); return resultMap @ param page * @ param pageSize * @ return * / @ RequestMapping ("/ massageList") public Map massageList (@ RequestParam (value = "page", required = false) Integer page, @ RequestParam (value = "pageSize", required = false) Integer pageSize) {List commentList = commentService.massageList (page-1, pageSize) Long total = commentService.getCount2 (); int totalPage = (int) (total% pageSize = = 0? Total / pageSize: total / pageSize + 1); Map resultMap = new HashMap (); resultMap.put ("totalPage", totalPage); resultMap.put ("data", commentList); return resultMap } / * add comments * @ Title: add * @ param comment comment entity * @ return Parameter description * @ return Map return type * @ throws * / @ RequestMapping ("/ add") public Map add (Comment comment, HttpSession session) {User currentUser = (User) session.getAttribute ("user"); Map resultMap = new HashMap (); comment.setCommentDate (new Date ()) Comment.setUser (currentUser); commentService.add (comment); if (comment.getArticle ()! = null) {articleService.increaseComment (comment.getArticle (). GetArticleId ());} resultMap.put ("comment", comment); resultMap.put ("success", true); return resultMap;}}

Reply to the business controller:

/ * * reply controller * @ author yy * * / @ RestController@RequestMapping ("/ reply") public class ReplyController {@ Resource private ReplyService replyService; / * get a reply * @ param reply * @ return * / @ RequestMapping ("/ list") public Map replyList (Reply reply) {List replyList = replyService.list (reply); Map resultMap = new HashMap (); resultMap.put ("data", replyList); return resultMap } / * add reply * @ param reply * @ return * / @ RequestMapping ("/ add") public Map add (Reply reply, HttpSession session) {User currentUser = (User) session.getAttribute ("user"); Map resultMap = new HashMap (); reply.setReplyDate (new Date ()); reply.setUser (currentUser); replyService.add (reply); resultMap.put ("reply", reply) ResultMap.put ("success", true); return resultMap;}

Administrator Business Controller:

/ * * Manager Controller * @ author yy * / @ RestController@RequestMapping ("/ admin") public class AdminController {@ Value ("${MD5Salt}") private String salt; / / md5 encryption salt @ Resource private AdminService adminService; @ Resource private UserService userService; @ Resource private ArticleService articleService; @ Resource private ClassifyService classifyService / * * background administrator login authentication * @ param admin * @ param request * @ return * / @ RequestMapping ("/ login") public ModelAndView login (Admin admin, HttpServletRequest request) {ModelAndView mav = new ModelAndView (); HttpSession session = request.getSession (); try {Admin resultUser = adminService.findByUserNameAndPassword (admin.getUserName (), admin.getPassword ()) If (resultUser = = null) {mav.addObject ("errorInfo", "wrong username or password!"); mav.setViewName ("/ login");} else {session.setAttribute ("adminUser", resultUser); / / Total number of users Long userCount = userService.getCount () / / Statistics registered today Long userRegCount = userService.getTodayRegistCount (new User (), "1", "1"); / Statistics Today login Long userLogCount = userService.getCount (new User (), "1", "1"); / / Total number of Statistical Notes Long artCount = articleService.getCount (); / / Statistical Note Classification Long classCount = classifyService.getCount () Session.setAttribute ("userCount", userCount); session.setAttribute ("userRegCount", userRegCount); session.setAttribute ("userLogCount", userLogCount); session.setAttribute ("artCount", artCount); session.setAttribute ("classCount", classCount); mav.addObject ("success", true); mav.setViewName ("/ admin/index") } catch (Exception e) {/ / username password error e.printStackTrace (); mav.addObject ("admin", admin); mav.addObject ("errorInfo", "wrong username or password!"); mav.setViewName ("/ login");} return mav } / * View personal information * * @ return * / @ RequestMapping ("viewPerson") public ModelAndView viewPerson (HttpServletRequest request) {Admin admin = (Admin) request.getSession (). GetAttribute ("adminUser"); ModelAndView mav = new ModelAndView (); Admin u = adminService.findById (admin.getAdminId ()); mav.addObject ("user", u); mav.setViewName ("/ admin/adminViewPerson"); return mav } / * Save user information * * @ param user * @ return * / @ RequestMapping ("/ save") public ModelAndView save (Admin user) {ModelAndView mav = new ModelAndView (); adminService.save (user); mav.setViewName ("/ admin/index"); return mav;}}

User service controller:

/ * user controller * * / @ RestController@RequestMapping ("/ admin/user") public class UserAdminController {@ Resource private UserService userService; @ Value ("${MD5Salt}") private String salt; / / md5 encryption salt / * find users * @ param userId * @ return * / @ RequestMapping ("/ findById") public Map findById (Integer userId) {Map resultMap = new HashMap () according to ID User user = userService.findById (userId); resultMap.put ("errorNo", 0); resultMap.put ("data", user); return resultMap } / * pagination query user * @ param user * @ param registrationDates * @ param page * @ param limit * @ return * / @ RequestMapping ("/ list") public Map list (User user, @ RequestParam (value = "latelyLoginTimes", required = false) String latelyLoginTimes, @ RequestParam (value = "page", required = false) Integer page, @ RequestParam (value = "pageSize") Required = false) Integer pageSize) {String s_bregistrationDate = null / / start time String s_eregistrationDate = null; / / end time if (StringUtil.isNotEmpty (latelyLoginTimes)) {String [] strs = latelyLoginTimes.split ("-"); / / split period s_bregistrationDate = strs [0]; s_eregistrationDate = strs [1];} List userList = userService.list (user, s_bregistrationDate, s_eregistrationDate, page-1, pageSize) Long total = userService.getCount (user, s_bregistrationDate, s_eregistrationDate); Map resultMap = new HashMap (); resultMap.put ("errorNo", 0); resultMap.put ("data", userList); resultMap.put ("total", total); return resultMap;} @ RequestMapping ("/ delete") public Map delete (Integer userId) {Map resultMap = new HashMap (); userService.delete (userId); resultMap.put ("errorNo", 0) Return resultMap;} / * unfollow * @ param request * @ param userId * @ return * / @ RequestMapping ("/ removeFocusUser") public ModelAndView removeFocusUser (HttpServletRequest request, String userId) {ModelAndView mav = new ModelAndView (); User user = (User) request.getSession (). GetAttribute ("user"); / / currently logged in user String userIds = user.getUserIds () List tempList = Arrays.asList (userIds.split (","); List lineIdList = new ArrayList (tempList); lineIdList.remove (userId); String ret = StringUtils.join (lineIdList, ","); user.setUserIds (ret); userService.save (user); mav.setViewName ("redirect:/viewFocusUser"); return mav } / * follow user * @ param request * @ param userId * @ return * / @ RequestMapping ("/ addFocusUser") public ModelAndView addFocusUser (HttpServletRequest request, String userId) {ModelAndView mav = new ModelAndView (); User user = (User) request.getSession (). GetAttribute ("user"); / / currently logged in user String userIds = user.getUserIds (); List tempList = Arrays.asList (userIds.split (",")) List lineIdList = new ArrayList (tempList); lineIdList.add (userId); String ret = StringUtils.join (lineIdList, ","); user.setUserIds (ret); userService.save (user); mav.setViewName ("redirect:/viewFocusUser"); return mav;} @ RequestMapping ("/ addFocusUser/ {userId}") public ModelAndView addFocusUser (@ PathVariable (value = "userId", required = false) Integer userId, HttpSession session) {ModelAndView mav = new ModelAndView () User user = (User) session.getAttribute ("user"); / / currently logged in user String userIds = user.getUserIds (); List tempList = new ArrayList (); if (userIds! = null) {tempList = Arrays.asList (userIds.split (",");} List lineIdList = new ArrayList (tempList); lineIdList.add (userId.toString ()); String ret = StringUtils.join (lineIdList, ","); user.setUserIds (ret) UserService.save (user); mav.setViewName ("redirect:/viewFocusUser"); return mav;} / * * cancel Collection * @ param request * @ param userId * @ return * / @ RequestMapping ("/ removeCollection") public ModelAndView removeCollection (HttpServletRequest request, String artId) {ModelAndView mav = new ModelAndView (); User user = (User) request.getSession (). GetAttribute ("user") / / currently logged in user String artIds = user.getArticleIds (); List tempList = Arrays.asList (artIds.split (",")); List lineIdList = new ArrayList (tempList); lineIdList.remove (artId); String ret = StringUtils.join (lineIdList, ","); user.setArticleIds (ret); userService.save (user); mav.setViewName ("redirect:/viewCollection"); return mav } / * favorites * @ param request * @ param userId * @ return * / @ RequestMapping ("/ addCollection") public ModelAndView addCollection (HttpServletRequest request, String artId) {ModelAndView mav = new ModelAndView (); User user = (User) request.getSession (). GetAttribute ("user"); / / currently logged in user String artIds = user.getArticleIds (); List tempList = Arrays.asList (artIds.split (",")) List lineIdList = new ArrayList (tempList); lineIdList.add (artId); String ret = StringUtils.join (lineIdList, ","); user.setArticleIds (ret); userService.save (user); mav.setViewName ("redirect:/viewCollection"); return mav }} the above is the content of this article on "how to realize the Life Travel sharing platform in Java". I believe everyone has a certain understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about the relevant knowledge, please follow the industry information channel.

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