SpringMVC详细笔记整合

<!-- 配置controller扫描包 -->
<context:component-scan
base-package="com.ziyuanshequ.springmvc.controller" />
</beans>

<!-- 配置SpringMVC前端控制器 -->
 <servlet>
   <servlet-name>ziyuanshequ</servlet-name>
   <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
   <!-- 指定SpringMVC配置文件 -->  
   <init-param>
     <param-name>contextConfigLocation</param-name>
     <param-value>classpath:springmvc.xml</param-value>
   </init-param>
 </servlet>
 <servlet-mapping>
   <servlet-name>ziyuanshequ</servlet-name>
   <!-- 设置所有以action结尾的请求进入SpringMVC -->
   <url-pattern>*.action</url-pattern>
 </servlet-mapping>

<c:forEach items="${itemList }" var="item">
<tr>
 <td>${item.name }</td>
 <td><fmt:formatDate value="${item.createtime}" pattern="yyyy-MM-dd HH:mm:ss"/></td>
 <td>${item.detail }</td>
</tr>
</c:forEach>

public class Item {
 // 商品id
 private int id;
 // 商品名称
 private String name;
 // 商品创建时间
 private Date createtime;
 // 商品描述
 private String detail;

set/get...
}

@Controller 
public class ItemController {  

 // 请求的url，和用户请求的url进行匹配，.action可不写
 @RequestMapping("/itemList.action")
 public ModelAndView getItemList() {
   // 创建页面需要显示的商品数据
   List<Item> list = new ArrayList<>();
   list.add(new Item(1, "小米",  new Date(), "质量好！"));
   list.add(new Item(2, "华为",  new Date(), "质量好！"));
   list.add(new Item(3, "魅族",  new Date(), "质量好！"));

   // 创建ModelAndView，用来存放数据和视图
   ModelAndView modelAndView = new ModelAndView();
   // 设置数据到模型中
   modelAndView.addObject("list", list);
   // 设置视图jsp，需要设置视图的物理地址
   modelAndView.setViewName("/WEB-INF/jsp/itemList.jsp");

   return modelAndView;
 }
}

<!-- 配置处理器映射器 -->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping" />

<!-- 配置处理器适配器 -->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter" />

<!-- 注解驱动 -->
<mvc:annotation-driven />

<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 配置逻辑视图的前缀 -->
<property name="prefix" value="/WEB-INF/jsp/" />
<!-- 配置逻辑视图的后缀 -->
<property name="suffix" value=".jsp" />
</bean>

// 设置视图jsp，需要设置视图的物理地址
modelAndView.setViewName("/WEB-INF/jsp/itemList.jsp");

modelAndView.setViewName("itemList");

@RequestMapping("/itemEdit")
public ModelAndView queryItemById(HttpServletRequest request) {
 String strId = request.getParameter("id");
 // 把结果传递给页面
 ModelAndView modelAndView = new ModelAndView();
 // 把数据放在模型中
 modelAndView.addObject("item", service.findById(strId));
 // 设置逻辑视图
 modelAndView.setViewName("itemEdit");
 return modelAndView;
｝

@RequestMapping("/itemEdit")
public String queryItemById(HttpServletRequest request, Model model) {
 // 从request中获取请求参数
 String strId = request.getParameter("id");
 // 把数据放在模型中
 model.addAttribute("item", service.findById(strId));
 return "itemEdit";
}

@RequestMapping("/itemEdit")
public String queryItemById(HttpServletRequest request, ModelMap model) {
 // 从request中获取请求参数
 String strId = request.getParameter("id");
 // 把数据放在模型中
 model.addAttribute("item", service.findById(strId));
 return "itemEdit";
}

@RequestMapping("/itemEdit")
public String queryItemById(int id, ModelMap model) {
 // 把数据放在模型中
 model.addAttribute("item", service.findById(id));
 return "itemEdit";
}

@RequestMapping("/itemEdit")
public String queryItemById(@RequestParam(value = "itemId", required = true, 
               defaultValue = "1")int id,ModelMap model) {
 // 把数据放在模型中
 model.addAttribute("item", service.findById(id));
 return "itemEdit";
}

public class Items {
   private Integer id;
   private String name;
   private Float price;
   private String pic;
   private Date createtime;
   private String detail;
get...set....

<form id="itemForm"action="/addItem.action" method="post">
<input type="hidden" name="id"  />
<input type="text" name="name"  />
<input type="text" name="pic"  />

@RequestMapping("/addItem")
public String addItem(Item item) {
 service.save(item);
 // 返回逻辑视图
 return "success";
}

public class QueryVo {
     private Item item;
set/get...
}

<form id="itemForm"action="/addItem.action" method="post">
<input type="hidden" name="item.id"  />
<input type="text" name="item.name"  />
<input type="text" name="item.pic"  />

@RequestMapping("/queryItem")
 public String queryItem(QueryVo queryVo) {
   System.out.println(queryVo.getItem().getId());
   System.out.println(queryVo.getItem().getName());
   return "success";
 }