SprigMVC基础测试

1. 创建POJO

   1.  1 package org.entity; 2 ?3 ?4 public class User { 5 ????private int id; 6 ????private String userName; 7 ????private String email; 8 ????private Address address; 9 ????public User(int id, String userName, String email, Address address) {10 ????????super();11 ????????this.id = id;12 ????????this.userName = userName;13 ????????this.email = email;14 ????????this.address = address;15 ????}16 ????@Override17 ????public String toString() {18 ????????return "User [id=" + id + ", userName=" + userName + ", email=" + email + ", address=" + address + "]";19 ????}20 ????public User(int id, String userName, String email) {21 ????????super();22 ????????this.id = id;23 ????????this.userName = userName;24 ????????this.email = email;25 ????}26 ????public Address getAddress() {27 ????????return address;28 ????}29 ????public void setAddress(Address address) {30 ????????this.address = address;31 ????}32 ????public int getId() {33 ????????return id;34 ????}35 ????public void setId(int id) {36 ????????this.id = id;37 ????}38 ????public String getUserName() {39 ????????return userName;40 ????}41 ????public void setUserName(String userName) {42 ????????this.userName = userName;43 ????}44 ????public String getEmail() {45 ????????return email;46 ????}47 ????public void setEmail(String email) {48 ????????this.email = email;49 ????}50 ????public User() {51 } ???52 }

   2.  1 package org.entity; 2 ?3 public class Address { 4 private String provience; 5 private String city; 6 public String getProvience() { 7 ????return provience; 8 } 9 public void setProvience(String provience) {10 ????this.provience = provience;11 }12 public String getCity() {13 ????return city;14 }15 public void setCity(String city) {16 ????this.city = city;17 }18 @Override19 public String toString() {20 ????return "Address [provience=" + provience + ", city=" + city + "]";21 }22 }

2. 配置web.xml

   1.  1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 ????xmlns="http://xmlns.jcp.org/xml/ns/javaee" 4 ????xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" 5 ????id="WebApp_ID" version="3.1"> 6 <!--配置DispatcherServlet ?--> 7 <!-- The front controller of this Spring Web application, responsible for handling all application requests --> 8 ????<servlet> 9 ????????<servlet-name>springDispatcherServlet</servlet-name>10 ????????<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>11 ????????<!-- 配置DiapacherServlet初始化参数 -->12 ????????<init-param>13 ????????????<param-name>contextConfigLocation</param-name>14 ????????????<param-value>classpath:springmvc.xml</param-value>15 ????????</init-param>16 ????????<!-- ??-->17 ????????<load-on-startup>1</load-on-startup>18 ????</servlet>19 20 ????<!-- Map all requests to the DispatcherServlet for handling -->21 ????<servlet-mapping>22 ????????<servlet-name>springDispatcherServlet</servlet-name>23 ????????<url-pattern>/</url-pattern>24 ????</servlet-mapping>25 </web-app>

3. 配置SpringMVC.xml

   1.  1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 ????xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 ????xmlns:context="http://www.springframework.org/schema/context" 5 ????xmlns:mvc="http://www.springframework.org/schema/mvc" 6 ????xmlns:task="http://www.springframework.org/schema/task" 7 ????xmlns:aop="http://www.springframework.org/schema/aop" 8 ????xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd 9 ????????http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.0.xsd10 ????????http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd11 ????????http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd12 ????????http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd13 ????????http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd14 ????????http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-4.0.xsd15 ????????http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd16 ????????http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">17 <!-- 配置自定义扫描得包 -->18 ????<context:component-scan base-package="org.handler"></context:component-scan>19 <!-- 配置视图解析器：如何把handler返回值解析为实际的物理视图 -->20 ????????<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">21 ????????<property name="prefix" value="/WEB-INF/views/"></property>22 ????????<property name="suffix" value=".jsp"/>23 ????</bean>24 <!-- 自定义图 视图解析器 ??使用视图的名字来解析视图-->25 <!-- 通过order属性来定义视图优先级 order值越小优先级越高-->26 ????<bean class="org.springframework.web.servlet.view.BeanNameViewResolver">27 ????<property name="order" value="100"></property>28 ????</bean>29 ????<!-- 配置直接转发的页面 -->30 ????<mvc:view-controller path="/success" view-name="success"/>31 ????<!-- 在实际开发中需要配置mvc:annotation-driven标签 ?-->32 ????<mvc:annotation-driven></mvc:annotation-driven>33 <!-- 配置国际化资源文件 -->34 <bean id="messageSource"35 ????????class="org.springframework.context.support.ResourceBundleMessageSource">36 ????????<property name="basename" value="i18n"></property>37 ????????</bean>38 39 </beans>

4. 编写jsp
   1. 　　index.jsp

       1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 ????pageEncoding="UTF-8"%> 3 <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 8 <title>Insert title here</title> 9 </head>10 <body>11 ????<a href="helloword">Hello Word</a>12 ????<br>13 ????<form action="testUser">14 ????????id:<input type="text" name="id"/>15 ????????<br>16 ????????userName:<input type="text" name="userName"/>17 ????????<br>18 ????????email:<input type="text" name="email"/>19 ????????<br>20 ????????provience:<input type="text" name="address.provience"/>21 ????????<br>22 ????????city:<input type="text" name="address.city"/>23 ????????<input type="submit" value="提交"/>24 ????</form>25 ????<br/>26 ????<a href="testServletAPI">testServletAPI</a>27 ????<br>28 ????<a href="testModelAndView">testModelAndView</a>29 ????<br>30 ????<a href="testMap">test Map</a>31 ????<br>32 ????<a href="testSessionAttributes">testSessionAttributes</a>33 ????34 ????<br><br>35 ????<!-- 36 ????????模拟修改操作37 ????????1.原始数据为 ?1 tom @tom.com38 ????????2.名字不能被修改39 ????????3.表单回显，模拟操作直接在表单填写对应的属性值40 ?????-->41 ????<form action="testModelAttribute">42 ????????<input type="hidden" name = "id" value="1"/>43 ????????email:<input type="text" name ="email" value="@tom.com"/>44 ????????<input type="submit" value="提交"/>45 ????</form>46 ????<br><br>47 ????48 ????<a href="testViewSourceAndViewResolver">testViewSourceAndViewResolver</a>49 ????50 ????????<br><br>51 ????国际化：52 ????<br>53 ????<fmt:message key="i18n.username"></fmt:message>54 ????<br>55 ????<fmt:message key="i18n.password"></fmt:message>56 ????57 ????<br><br>58 ????<a href="testView">testView</a>59 ????<br><br>60 ????<a href=testRedirect>testRedirect</a>61 </body>62 </html>

   2. 　 success.jsp

    1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 ????pageEncoding="UTF-8"%> 3 <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt"%> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 8 <title>Insert title here</title> 9 </head>10 <body>11 ????hello SpringMVC12 ????<br>13 ????time: ${requestScope.time}14 ????<br>15 ????name: ${requestScope.names}16 ????<br><br>17 ????request user: ${requestScope.user}18 ????<br>19 ????session user: ${sessionScope.user}20 ????<br><br>21 ????request email: ${requestScope.email}22 ????<br>23 ????session email: ${sessionScope.email}24 ????<br>25 ????<br><br>26 ????国际化：27 ????<br>28 ????<fmt:message key="i18n.username"></fmt:message>29 ????<br>30 ????<fmt:message key="i18n.password"></fmt:message>31 </body>32 </html>

5. 编写Handler

   1.  ?1 package org.handler; ?2 ??3 import java.io.IOException; ?4 import java.io.Writer; ?5 import java.util.Arrays; ?6 import java.util.Date; ?7 import java.util.HashMap; ?8 import java.util.Map; ?9 ?10 import javax.servlet.http.HttpServletRequest; 11 import javax.servlet.http.HttpServletResponse; 12 import javax.xml.ws.soap.MTOM; 13 ?14 import org.apache.catalina.startup.Tomcat; 15 import org.apache.taglibs.standard.lang.jstl.test.beans.PublicInterface2; 16 import org.entity.User; 17 import org.omg.PortableInterceptor.SUCCESSFUL; 18 import org.springframework.stereotype.Controller; 19 import org.springframework.validation.Errors; 20 import org.springframework.web.bind.annotation.ModelAttribute; 21 import org.springframework.web.bind.annotation.RequestMapping; 22 import org.springframework.web.bind.annotation.RequestParam; 23 import org.springframework.web.bind.annotation.SessionAttributes; 24 import org.springframework.web.servlet.ModelAndView; 25 import com.sun.net.httpserver.Authenticator.Success; 26 import com.sun.org.apache.bcel.internal.generic.NEW; 27 import com.sun.org.apache.regexp.internal.recompile; 28 //@SessionAttributes(value={"user"},types={String.class}) 29 @Controller 30 public class SpringMVC { 31 public ???static String SUCCESS = "success"; 32 ????/** 33 ?????* 使用@RequestMapping注解来映射请求的URL 34 ?????* @return 35 ?????*/ 36 @RequestMapping("/helloword") 37 public String testhello() { 38 ????System.out.println("helloword"); 39 ????return "success"; ????40 } 41 /** 42 ?* 支持提交pojo ?会根据name与pojo属性进行匹配 支持级联属性 43 ?* @param user 44 ?* @return 45 ?*/ 46 @RequestMapping("/testUser") 47 public String ?testUser(User user) { 48 ????System.out.println("User:"+user.toString()); 49 ????return "success"; 50 } 51 /** 52 ?* 支持使用servlet原生api 53 ?* HttpServletReqyest 54 ?* HttpServletResponse 55 ?* HttpSession 56 ?* java.security.Prinipal 57 ?* Locale 58 ?* InputStream 59 ?* OutputStream 60 ?* Reader 61 ?* Writer 62 ?* @throws IOException ?63 ?*/ 64 @RequestMapping("testServletAPI") 65 public String testServletAPI(HttpServletRequest request, 66 ????????HttpServletResponse response, 67 ????????Writer out) throws IOException { 68 ?????69 ????System.out.println("testServletAPI:"+request+"\n"+response+"\n"+out); 70 ????out.write("hello writer"); 71 ????out.write(1111); 72 ????return "success"; 73 } 74 /** 75 ?* ModelAndView 76 ?* Map及Model 77 ?* @sessionAttributes 78 ?* @ModelAttribute 79 ?* 目标方法的返回值可以是ModelAndView类型其中包含视图和模型信息 80 ?*/ 81 @RequestMapping("testModelAndView") 82 public ModelAndView testModelAndView() { 83 ????String viewName="success"; 84 ????ModelAndView modelAndView = new ModelAndView(viewName); 85 ????modelAndView.addObject("time",new Date()); 86 ????return modelAndView; 87 } 88 /** 89 ?* 目标方法可以添加map（也可以是Model类型或ModelMap类型）类型参数 90 ?* @param map 91 ?* @return 92 ?*/ 93 @RequestMapping("testMap") 94 public String testMap(Map<String,Object> map) { 95 ????map.put("names",Arrays.asList("tom","jerry","mike")); 96 ????return "success"; 97 } 98 /** 99 ?* map 默认在request域里不会装进Session域100 ?* 用sessionAttributes在controller类上做注解使属性值进入session域101 ?* 其括号内可放键、值 ?如上设置102 ?* @SessionAttributes(value={"user"},types={String.class})103 ?* 表示将 ??键 为"user" 或 ?值为String类型的 ??键值对放入session域104 ?* 注意 ：该注解只能放在类上105 ?*/106 107 @RequestMapping("testSessionAttributes")108 public String ?testSessionAttributes(Map<String, Object> map) {109 ????User user = new User(121,"tom","@qwqx.com");110 ????map.put("user", user);111 ????map.put("email", "@myemail.com");112 ????return ?SUCCESS;113 }114 /**@RequestMapping("testModelAttribute")115 ?* 如果数据库中的数据进行修改操作，默认的表单提交会new一个对象传回后台116 ?* 如果规定某些属性无法修改，在表单里我们是不需要列出来的，而表单里我们不对属性进行赋值，117 ?* 会造成对象属性为null，在写入数据库时造成麻烦，118 ?* 当然我们可以用hidden赋值，但如果是私密属性又会有麻烦119 ?* 在这里我们可以选择先从数据库插叙获取到对象，传送到页面，表单提交只是对属性值作出更改，而不是新建对象120 ?*/121 @RequestMapping("testModelAttribute")122 public String testModelAttribute(@ModelAttribute("user")User user) {123 ????System.out.println("修改："+user);124 ????return SUCCESS;125 }126 /**127 ?* 由@ModelAttribute标记的方法会在每个目标方法执行之前被SpringMVC调用128 ?* 在ModelAttribute修饰的方法中，放入到Map时的键需要和目标方法参数类型的第一个字母小写的字符串一致129 ?* 可以在目标方法的参数上用@ModelAttribute("user") 用于指定获取对象时需要查找的键130 ?* testModelAttribute(@ModelAttribute("user")User user)131 ?*/132 @ModelAttribute133 public void getUser(@RequestParam(value="id",required=false) Integer ?id,134 ????????????????????Map<String, Object> map) {135 ????if(id!=null) {136 // ???????假设user为数据库查询出来的对象137 ????????User user = new User(2,"Tom", "@tom.com");138 ????????System.out.println("数据库查询出来的对象："+user.toString());139 ????????map.put("user",user);140 ????}141 }142 @RequestMapping("testViewSourceAndViewResolver")143 public String testViewSourceAndViewResolver() {144 ????145 ????return SUCCESS;146 }147 @RequestMapping("testView")148 public String ?testView() {149 ????System.out.println("testView");150 ????return "helloView";151 }152 @RequestMapping("testRedirect")153 public String testRedirect() {154 ????System.out.println("testRedirect");155 ????return "redirect:/index.jsp";156 }157 }

自定义视图测试：

 1 package org.views; 2 ?3 import java.util.Date; 4 import java.util.Map; 5 ?6 import javax.servlet.http.HttpServletRequest; 7 import javax.servlet.http.HttpServletResponse; 8 ?9 import org.springframework.stereotype.Component;10 import org.springframework.web.servlet.View;11 12 @Component13 public class HelloView implements View{14 15 ????@Override16 ????public String getContentType() {17 ????????return "text/html";18 ????}19 20 ????@Override21 ????public void render(Map<String, ?> arg0, HttpServletRequest arg1, HttpServletResponse arg2) throws Exception {22 ????arg2.getWriter().print("hello view .time"+new Date()); ???23 ????}24 25 }