一、RequestMapping

1.可以写在方法上或类上，且值可以是数组

 package spittr.web;

 import static org.springframework.web.bind.annotation.RequestMethod.*;

 import org.springframework.stereotype.Controller;

 import org.springframework.ui.Model;

 import org.springframework.web.bind.annotation.RequestMapping;

 @Controller

 //@Component //也可用这个,但没有见名知义

 //@RequestMapping("/")

 @RequestMapping({"/", "/homepage"})

 public class HomeController {

   //@RequestMapping(value="/", method=GET)

   @RequestMapping(method = GET)

   public String home(Model model) {

     return "home";

   }

 }

2.测试

 package spittr.web;

 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;

 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;

 import static org.springframework.test.web.servlet.setup.MockMvcBuilders.*;

 import org.junit.Test;

 import org.springframework.test.web.servlet.MockMvc;

 import spittr.web.HomeController;

 public class HomeControllerTest {

   @Test

   public void testHomePage() throws Exception {

     HomeController controller = new HomeController();

     MockMvc mockMvc = standaloneSetup(controller).build();

     mockMvc.perform(get("/homepage"))

            .andExpect(view().name("home"));

   }

 }

3.jsp

 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

 <%@ page session="false" %>

 <html>

   <head>

     <title>Spitter</title>

     <link rel="stylesheet"

           type="text/css"

           href="<c:url value="/resources/style.css" />" >

   </head>

   <body>

     <h1>Welcome to Spitter</h1>

     <a href="<c:url value="/spittles" />">Spittles</a> |

     <a href="<c:url value="/spitter/register" />">Register</a>

   </body>

 </html>

二、在controller中使用model,model实际就是一个map

1.controller

(1)

package spittr.web;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import spittr.Spittle;

import spittr.data.SpittleRepository;

@Controller

@RequestMapping("/spittles")

public class SpittleController {

    private SpittleRepository spittleRepository;

    @Autowired

    public SpittleController(SpittleRepository spittleRepository) {

        this.spittleRepository = spittleRepository;

    }

    @RequestMapping(method = RequestMethod.GET)

    public String spittles(Model model) {

        model.addAttribute(spittleRepository.findSpittles(Long.MAX_VALUE, 20));

        return "spittles";

    }

}

如果在addAttribute时没有指定key，则spring会根据存入的数据类型来生成key,如上面存入的数据类型是List<Spittle>,所以key就是spittleList

(2)也可以明确key

 @RequestMapping(method = RequestMethod.GET)

 public String spittles(Model model) {

     model.addAttribute("spittleList",spittleRepository.findSpittles(Long.MAX_VALUE, 20));

     return "spittles";

 }

(3)也可用map替换model

 @RequestMapping(method = RequestMethod.GET)

 public String spittles(Map model) {

     model.put("spittleList",spittleRepository.findSpittles(Long.MAX_VALUE, 20));

     return "spittles";

 }

(4)不返回string，直接返回数据类型

@RequestMapping(method = RequestMethod.GET)

public List < Spittle > spittles() {

    return spittleRepository.findSpittles(Long.MAX_VALUE, 20));

}

When a handler method returns an object or a collection like this, the value returned is put into the model, and the model key is inferred from its type ( spittleList , as in the other examples).
As for the logical view name, it’s inferred from the request path. Because this method handles GET requests for /spittles, the view name is spittles (chopping off the leading slash).

2.View

在jsp中用jstl解析数据

 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

 <%@ taglib prefix="s" uri="http://www.springframework.org/tags"%>

 <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>

 <html>

   <head>

     <title>Spitter</title>

     <link rel="stylesheet" type="text/css" href="<c:url value="/resources/style.css" />" >

   </head>

   <body>

     <div class="spittleForm">

       <h1>Spit it out...</h1>

       <form method="POST" name="spittleForm">

         <input type="hidden" name="latitude">

         <input type="hidden" name="longitude">

         <textarea name="message" cols="80" rows="5"></textarea><br/>

         <input type="submit" value="Add" />

       </form>

     </div>

     <div class="listTitle">

       <h1>Recent Spittles</h1>

       <ul class="spittleList">

         <c:forEach items="${spittleList}" var="spittle" >

           <li id="spittle_<c:out value="spittle.id"/>">

             <div class="spittleMessage"><c:out value="${spittle.message}" /></div>

             <div>

               <span class="spittleTime"><c:out value="${spittle.time}" /></span>

               <span class="spittleLocation">(<c:out value="${spittle.latitude}" />, <c:out value="${spittle.longitude}" />)</span>

             </div>

           </li>

         </c:forEach>

       </ul>

       <c:if test="${fn:length(spittleList) gt 20}">

         <hr />

         <s:url value="/spittles?count=${nextCount}" var="more_url" />

         <a href="${more_url}">Show more</a>

       </c:if>

     </div>

   </body>

 </html>

3.测试

 package spittr.web;

 import static org.hamcrest.Matchers.*;

 import static org.mockito.Mockito.*;

 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;

 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;

 import static org.springframework.test.web.servlet.setup.MockMvcBuilders.*;

 import java.util.ArrayList;

 import java.util.Date;

 import java.util.List;

 import org.junit.Test;

 import org.springframework.test.web.servlet.MockMvc;

 import org.springframework.web.servlet.view.InternalResourceView;

 import spittr.Spittle;

 import spittr.data.SpittleRepository;

 import spittr.web.SpittleController;

 public class SpittleControllerTest {

   @Test

   public void shouldShowRecentSpittles() throws Exception {

     List<Spittle> expectedSpittles = createSpittleList(20);

     SpittleRepository mockRepository = mock(SpittleRepository.class);

     when(mockRepository.findSpittles(Long.MAX_VALUE, 20))

         .thenReturn(expectedSpittles);

     SpittleController controller = new SpittleController(mockRepository);

     MockMvc mockMvc = standaloneSetup(controller)

         .setSingleView(new InternalResourceView("/WEB-INF/views/spittles.jsp"))

         .build();

     mockMvc.perform(get("/spittles"))

        .andExpect(view().name("spittles"))

        .andExpect(model().attributeExists("spittleList"))

        .andExpect(model().attribute("spittleList",

                   hasItems(expectedSpittles.toArray())));

   }

   @Test

   public void shouldShowPagedSpittles() throws Exception {

     List<Spittle> expectedSpittles = createSpittleList(50);

     SpittleRepository mockRepository = mock(SpittleRepository.class);

     when(mockRepository.findSpittles(238900, 50))

         .thenReturn(expectedSpittles);

     SpittleController controller = new SpittleController(mockRepository);

     MockMvc mockMvc = standaloneSetup(controller)

         .setSingleView(new InternalResourceView("/WEB-INF/views/spittles.jsp"))

         .build();

     mockMvc.perform(get("/spittles?max=238900&count=50"))

       .andExpect(view().name("spittles"))

       .andExpect(model().attributeExists("spittleList"))

       .andExpect(model().attribute("spittleList",

                  hasItems(expectedSpittles.toArray())));

   }

   @Test

   public void testSpittle() throws Exception {

     Spittle expectedSpittle = new Spittle("Hello", new Date());

     SpittleRepository mockRepository = mock(SpittleRepository.class);

     when(mockRepository.findOne(12345)).thenReturn(expectedSpittle);

     SpittleController controller = new SpittleController(mockRepository);

     MockMvc mockMvc = standaloneSetup(controller).build();

     mockMvc.perform(get("/spittles/12345"))

       .andExpect(view().name("spittle"))

       .andExpect(model().attributeExists("spittle"))

       .andExpect(model().attribute("spittle", expectedSpittle));

   }

   @Test

   public void saveSpittle() throws Exception {

     SpittleRepository mockRepository = mock(SpittleRepository.class);

     SpittleController controller = new SpittleController(mockRepository);

     MockMvc mockMvc = standaloneSetup(controller).build();

     mockMvc.perform(post("/spittles")

            .param("message", "Hello World") // this works, but isn't really testing what really happens

            .param("longitude", "-81.5811668")

            .param("latitude", "28.4159649")

            )

            .andExpect(redirectedUrl("/spittles"));

     verify(mockRepository, atLeastOnce()).save(new Spittle(null, "Hello World", new Date(), -81.5811668, 28.4159649));

   }

   private List<Spittle> createSpittleList(int count) {

     List<Spittle> spittles = new ArrayList<Spittle>();

     for (int i=0; i < count; i++) {

       spittles.add(new Spittle("Spittle " + i, new Date()));

     }

     return spittles;

   }

 }

SPRING IN ACTION 第4版笔记-第五章BUILDING SPRING WEB APPLICATIONS-002-Controller的requestMapping、model的更多相关文章

  1. SPRING IN ACTION 第4版笔记-第五章BUILDING SPRING WEB APPLICATIONS-007-表单验证@Valid、Error

    一. Starting with Spring 3.0, Spring supports the Java Validation API in Spring MVC . No extra config ...

  2. SPRING IN ACTION 第4版笔记-第五章Building Spring web applications-001-SpringMVC介绍

    一. 二.用Java文件配置web application 1. package spittr.config; import org.springframework.web.servlet.suppo ...

  3. SPRING IN ACTION 第4版笔记-第五章BUILDING SPRING WEB APPLICATIONS-004-以query parameters的形式给action传参数(@RequestParam、defaultValue)

    一. 1.Spring MVC provides several ways that a client can pass data into a controller’s handler method ...

  4. SPRING IN ACTION 第4版笔记-第五章BUILDING SPRING WEB APPLICATIONS-005-以path parameters的形式给action传参数(value=“{}”、@PathVariable)

    一 1.以path parameters的形式给action传参数 @Test public void testSpittle() throws Exception { Spittle expecte ...

  5. SPRING IN ACTION 第4版笔记-第五章BUILDING SPRING WEB APPLICATIONS-006-处理表单数据(注册、显示用户资料)

    一.显示注册表单 1.访问资源 @Test public void shouldShowRegistration() throws Exception { SpitterRepository mock ...

  6. SPRING IN ACTION 第4版笔记-第五章BUILDING SPRING WEB APPLICATIONS-003-示例项目用到的类及配置文件

    一.配置文件 1.由于它继承AbstractAnnotationConfigDispatcherServletInitializer,Servlet容器会把它当做配置文件 package spittr ...

  7. SPRING IN ACTION 第4版笔记-第七章Advanced Spring MVC-005- 异常处理@ResponseStatus、@ExceptionHandler、@ControllerAdvice

    No matter what happens, good or bad, the outcome of a servlet request is a servlet response. If an e ...

  8. SPRING IN ACTION 第4版笔记-第七章Advanced Spring MVC-003- 上传文件multipart,配置StandardServletMultipartResolver、CommonsMultipartResolver

    一.什么是multipart The Spittr application calls for file uploads in two places. When a new user register ...

  9. SPRING IN ACTION 第4版笔记-第七章Advanced Spring MVC-002- 在xml中引用Java配置文件，声明DispatcherServlet、ContextLoaderListener

    一.所有声明都用xml 1. <?xml version="1.0" encoding="UTF-8"?> <web-app version= ...

随机推荐

  1. Javascript的作用域、作用域链以及闭包

    一.javascript中的作用域 ①全局变量-函数体外部进行声明 ②局部变量-函数体内部进行声明 1)函数级作用域 javascript语言中局部变量不同于C#.Java等高级语言,在这些高级语言内 ...

  2. ios - 再细读KVO

    [罗国强原创] KVO - Key-Value Observing. 它提供了一种机制,允许对象被通知到其他对象的具体特性的变化.它特别适用于一个应用的模型层与控制层的交互. 一种典型的应用场景是在一 ...

  3. 修改placeholder颜色

    #contact_info为textarea的ID #contact_info::-webkit-input-placeholder{ color:#999;}#contact_info:-moz-p ...

  4. Java实战之04JavaWeb-01Servlet

    一.Http协议 1．什么是http协议? http协议就是描述客户端与服务器端交互过程的 2．http的请求 3．http的响应 二.Servlet的简介 1．Servlet的概述 Servlet: ...

  5. OpenJudge 2979 陪审团的人选 / Poj 1015 Jury Compromise

    1.链接地址: http://bailian.openjudge.cn/practice/2979 http://poj.org/problem?id=1015 2.题目: 总Time Limit: ...

  6. jQuery按钮复制文本内容

    这种方法能保证文本内容被复制到windows剪切板,代码示例是复制url <!doctype html> <html> <head> <meta charse ...

  7. Android开发系列之AChartEngine

    Android图表控件的开发 曾经开发过一个小程序,在Android电视机上面开发一个APP,用于显示一些统计图表的信息.最后找来找去基于Android Native开发有AChartEngine现成 ...

  8. Asp.net Gridview导出Excel

    前台页面放一个GridView什么的就不说了,要注意的是在 <%@ Page Language="C#" AutoEventWireup="true" C ...

  9. php 魔术方法__get()和__set()理解

    __get()方法,官方手册上是这样解释的 : ' 当调用(自己加的:或设置|赋值)当前环境下未定义或不可见的类属性或方法时,重载方法会被调用.本节后面将使用"不可访问属性(inaccess ...

  10. http通信协议详解

    转载自:http://blog.csdn.net/gueter/article/details/1524447 引言 HTTP是一个属于应用层的面向对象的协议,由于其简捷.快速的方式,适用于分布式超媒 ...