The blog of Astro Qi

            package com.baobaotao.web;
            import org.springframework.web.bind.annotation.RequestMapping;
            import org.springframework.web.bind.annotation.RequestParam;
            …
            @Controller
            @RequestMapping("/bbtForum.do")
            public class BbtForumController {
            @RequestMapping(params = "method=listBoardTopic")
            public String listBoardTopic(@RequestParam("id") int topicId,User user) {
            bbtForumService.getBoardTopics(topicId);
            System.out.println("topicId:"+topicId);
            System.out.println("user:"+user);
            System.out.println("call listBoardTopic method.");
            return "listTopic";
            }
            …
            }
            

            @RequestMapping(params = "method=listBoardTopic")
            public String listBoardTopic(@RequestParam("id")int topicId,
            User user,ModelMap model) {
            bbtForumService.getBoardTopics(topicId);
            System.out.println("topicId:" + topicId);
            System.out.println("user:" + user);
            //① 將user對(duì)象以currUser為鍵放入到model中
            model.addAttribute("currUser",user);
            return "listTopic";
            }
            

            package com.baobaotao.web;
            …
            import org.springframework.ui.ModelMap;
            import org.springframework.web.bind.annotation.SessionAttributes;
            @Controller
            @RequestMapping("/bbtForum.do")
            @SessionAttributes("currUser") //①將ModelMap中屬性名為currUser的屬性
            //放到Session屬性列表中，以便這個(gè)屬性可以跨請(qǐng)求訪問(wèn)
            public class BbtForumController {
            …
            @RequestMapping(params = "method=listBoardTopic")
            public String listBoardTopic(@RequestParam("id")int topicId, User user,
            ModelMap model) {
            bbtForumService.getBoardTopics(topicId);
            System.out.println("topicId:" + topicId);
            System.out.println("user:" + user);
            model.addAttribute("currUser",user); //②向ModelMap中添加一個(gè)屬性
            return "listTopic";
            }
            }
            

            package com.baobaotao.web;
            import com.baobaotao.service.BbtForumService;
            import org.springframework.beans.factory.annotation.Autowired;
            import org.springframework.stereotype.Controller;
            import org.springframework.ui.ModelMap;
            import org.springframework.web.bind.annotation.RequestMapping;
            import org.springframework.web.bind.annotation.RequestParam;
            import org.springframework.web.bind.annotation.SessionAttributes;
            import org.springframework.web.bind.annotation.ModelAttribute;
            import javax.servlet.http.HttpServletRequest;
            import javax.servlet.http.HttpSession;
            @Controller
            @RequestMapping("/bbtForum.do")
            @SessionAttributes("currUser") //①讓ModelMap的currUser屬性擁有session級(jí)作用域
            public class BbtForumController {
            @Autowired
            private BbtForumService bbtForumService;
            @RequestMapping(params = "method=listBoardTopic")
            public String listBoardTopic(@RequestParam("id")int topicId, User user,
            ModelMap model) {
            bbtForumService.getBoardTopics(topicId);
            System.out.println("topicId:" + topicId);
            System.out.println("user:" + user);
            model.addAttribute("currUser",user); //②向ModelMap中添加一個(gè)屬性
            return "listTopic";
            }
            @RequestMapping(params = "method=listAllBoard")
            //③將ModelMap中的
            public String listAllBoard(@ModelAttribute("currUser") User user) {
            //currUser屬性綁定到user入?yún)⒅小?
            bbtForumService.getAllBoard();
            System.out.println("user:"+user);
            return "listBoard";
            }
            }
            

            @RequestMapping(method = RequestMethod.POST)
            public String processSubmit(@ModelAttribute Owner owner,
            BindingResult result, SessionStatus status) {//<——①
            new OwnerValidator().validate(owner, result);
            if (result.hasErrors()) {
            return "ownerForm";
            }
            else {
            this.clinic.storeOwner(owner);
            status.setComplete();//<——②
            return "redirect:owner.do?ownerId=" + owner.getId();
            }
            }
            

            >bean class="org.springframework.web.servlet.mvc.annotation.
            AnnotationMethodHandlerAdapter"<
            >property name="webBindingInitializer"<
            >bean class="com.baobaotao.web.MyBindingInitializer"/<
            >/property<
            >/bean<
            

            package org.springframework.samples.petclinic.web;
            import java.text.SimpleDateFormat;
            import java.util.Date;
            import org.springframework.beans.factory.annotation.Autowired;
            import org.springframework.beans.propertyeditors.CustomDateEditor;
            import org.springframework.beans.propertyeditors.StringTrimmerEditor;
            import org.springframework.samples.petclinic.Clinic;
            import org.springframework.samples.petclinic.PetType;
            import org.springframework.web.bind.WebDataBinder;
            import org.springframework.web.bind.support.WebBindingInitializer;
            import org.springframework.web.context.request.WebRequest;
            public class MyBindingInitializer implements WebBindingInitializer {
            public void initBinder(WebDataBinder binder, WebRequest request) {
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
            dateFormat.setLenient(false);
            binder.registerCustomEditor(Date.class,
            new CustomDateEditor(dateFormat, false));
            binder.registerCustomEditor(String.class, new StringTrimmerEditor(false));
            }
            }
            

            @Controller
            public class MyFormController {
            @InitBinder
            public void initBinder(WebDataBinder binder) {
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
            dateFormat.setLenient(false);
            binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, false));
            }
            …
            }
            

            package com.baobaotao.web;
            import com.baobaotao.service.BbtForumService;
            import org.springframework.beans.factory.annotation.Autowired;
            import org.springframework.stereotype.Controller;
            import org.springframework.ui.ModelMap;
            import org.springframework.web.bind.annotation.ModelAttribute;
            import org.springframework.web.bind.annotation.RequestMapping;
            import org.springframework.web.bind.annotation.RequestParam;
            import org.springframework.web.bind.annotation.SessionAttributes;
            import java.util.ArrayList;
            import java.util.List;
            import java.util.Set;
            @Controller
            @RequestMapping("/bbtForum.do")
            public class BbtForumController {
            @Autowired
            private BbtForumService bbtForumService;
            @ModelAttribute("items")//<——①向模型對(duì)象中添加一個(gè)名為items的屬性
            public List<String> populateItems() {
            List<String> lists = new ArrayList<String>();
            lists.add("item1");
            lists.add("item2");
            return lists;
            }
            @RequestMapping(params = "method=listAllBoard")
            public String listAllBoard(@ModelAttribute("currUser")User user, ModelMap model) {
            bbtForumService.getAllBoard();
            //<——②在此訪問(wèn)模型中的items屬性
            System.out.println("model.items:" + ((List<String>)model.get("items")).size());
            return "listBoard";
            }
            }