目标：制作一个人员列表，可通过人员的id进行修改。
界面1：
界面2：
界面3：
一.利用myEclipse导入spring的特性后，让applicationContext.xml在WebRoot下。
二.过程：
1.建立index.jsp界面，使用jstl注解。（知识点C标签）
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 5 %> 6 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head> 10 <base href="<%=basePath%>"> 11 12 <title>My JSP ‘index.jsp‘ starting page</title> 13 <meta http-equiv="pragma" content="no-cache"> 14 <meta http-equiv="cache-control" content="no-cache"> 15 <meta http-equiv="expires" content="0"> 16 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 17 <meta http-equiv="description" content="This is my page"> 18 </head> 19 20 <body> 21 <h2>Adobocode : 世界你好</h2> 22 <br/> 23 <a href="<c:url value="personDisplay.htm"/>">人员列表</a> 24 </body> 25 </html>
2.在web.xml配置分发器，走htm后缀的方法
1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app version="2.5" 3 xmlns="http://java.sun.com/xml/ns/javaee" 4 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 5 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 6 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> 7 8 <servlet> 9 <servlet-name>springMVC</servlet-name> 10 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 11 <load-on-startup>1</load-on-startup> 12 </servlet> 13 14 <servlet-mapping> 15 <servlet-name>springMVC</servlet-name> 16 <url-pattern>*.htm</url-pattern> 17 </servlet-mapping> 18 19 <welcome-file-list> 20 <welcome-file>index.jsp</welcome-file> 21 </welcome-file-list> 22 </web-app>
3.配置springMVC-servlet.xml：第一次搭建时，报404错误，原来是下面这一行配置有误，prefix为路径的前缀，要扫描的view层是放在jsp文件下的，所以是value为/jsp/，只要路径弄错了就会报404.
<property name="prefix"><value>/jsp/</value></property>
1 <?xml version="1.0" encoding="UTF-8"?> 2 3 <beans xmlns="http://www.springframework.org/schema/beans" 4 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" 5 xmlns:context="http://www.springframework.org/schema/context" 6 xsi:schemaLocation=" 7 http://www.springframework.org/schema/beans 8 http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 9 http://www.springframework.org/schema/context 10 http://www.springframework.org/schema/context/spring-context-3.0.xsd"> 11 <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/> 12 <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/> 13 <context:component-scan base-package="paul.sydney.controller"/> 14 <context:component-scan base-package="paul.sydney.service"/> 15 <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 视图解释类:将在Controller返回的ModelAndView的基础上,加上目录前缀/WEB-INF/jsp/, 加后文件名称后缀.jsp,由此等待下个页面 -->
16 <property name="viewClass"><value>org.springframework.web.servlet.view.JstlView</value></property> 17 <property name="prefix"><value>/jsp/</value></property> 18 <property name="suffix"><value>.jsp</value></property> 19 </bean> 20 </beans>
DispatcherServlet默认在/WEB-INF/中查找<servlet-name>-servlet.xml,使用该配置文件初始化DispatcherServlet上下文对应的子spring容器，spring mvc3可以在-servlet.xml，自动扫描各个包，在此扫描controller/service两个包，返回视图层：jsp文件夹下面的.jsp后缀文件。有篇很好的介绍：http://www.open-open.com/lib/view/open1402751642806.html
4.model层，bean
1 package paul.sydney.model;
2
3 public class Person {
4 private int id;
5 private String name;
6 private int age;
7 private String address;
8
9 public int getId() {
10 return id;
11 }
12
13 public void setId(int id) {
14 this.id = id;
15 }
16
17 public String getName() {
18 return name;
19 }
20
21 public void setName(String name) {
22 this.name = name;
23 }
24
25 public int getAge() {
26 return age;
27 }
28
29 public void setAge(int age) {
30 this.age = age;
31 }
32
33 public String getAddress() {
34 return address;
35 }
36
37 public void setAddress(String address) {
38 this.address = address;
39 }
40
41 @Override
42 public String toString() {
43 StringBuilder sb = new StringBuilder();
44 sb.append("\nname:" + this.name);
45 sb.append("\nage:" + this.age);
46 sb.append("\naddress:" + this.address);
47
48 return sb.toString();
49
50 }
51 }
5.servlet层，这里使用一些伪造的数据
1 package paul.sydney.service;
2
3 import java.util.ArrayList;
4 import java.util.List;
5
6 import org.springframework.stereotype.Service;
7
8 import paul.sydney.model.Person;
9
10 @Service
11 public class DummyService {
12 public List<Person> getDummyList() {
13 System.err.println("111111");
14 List<Person> list = new ArrayList<Person>();
15 Person p1 = new Person();
16 p1.setId(123);
17 p1.setName("ami");
18 p1.setAge(23);
19 p1.setAddress("Nzland");
20 Person p2 = new Person();
21 p2.setId(321);
22 p2.setName("heha");
23 p2.setAge(21);
24 p2.setAddress("England");
25 list.add(p1);
26 list.add(p2);
27
28 return list;
29 }
30 public Person retrievePerson(int id) {
31 System.err.println("123456");
32 Person person = new Person();
33 person.setId(56789);
34 person.setName("Nikki");
35 person.setAge(63);
36 person.setAddress("Dalaguete, Cebu");
37 return person;
38 }
39
40 public void savePerson(Person person) {
41 System.out.println("\n\nSaving" + person);
42 }
43 }
6.controller层，有两个控制器：
数据的获取：
1 package paul.sydney.controller;
2
3 import org.springframework.beans.factory.annotation.Autowired;
4 import org.springframework.stereotype.Controller;
5 import org.springframework.ui.ModelMap;
6 import org.springframework.web.bind.annotation.RequestMapping;
7
8 import paul.sydney.service.DummyService;
9
10 @Controller
11 public class PersonDisplay {
12
13 private final DummyService dummyService;
14
15 @Autowired
16 public PersonDisplay(DummyService dummyService) {
17
18 this.dummyService = dummyService;
19 }
20
21 @RequestMapping("/personDisplay.htm")
22 public ModelMap defaultHandler() {
23 return new ModelMap("personList", this.dummyService.getDummyList());
24 }
25 }
index.jsp的地址映射/personDisplay.htm，将从数据层找到的数据存储在ModelMap内，类似kv的数据结构。
点击id，进入数据的form：
1 package paul.sydney.controller;
2
3 import javax.net.ssl.SSLEngineResult.Status;
4
5 import org.springframework.beans.factory.annotation.Autowired;
6 import org.springframework.stereotype.Controller;
7 import org.springframework.ui.ModelMap;
8 import org.springframework.validation.BindingResult;
9 import org.springframework.web.bind.annotation.ModelAttribute;
10 import org.springframework.web.bind.annotation.RequestMapping;
11 import org.springframework.web.bind.annotation.RequestMethod;
12 import org.springframework.web.bind.annotation.RequestParam;
13 import org.springframework.web.bind.annotation.SessionAttributes;
14 import org.springframework.web.bind.support.SessionStatus;
15
16 import paul.sydney.model.Person;
17 import paul.sydney.service.DummyService;
18
19
20 @Controller
21 @RequestMapping("/personForm.htm")
22 @SessionAttributes("person")
23 public class PersonForm {
24
25 private final DummyService dummyService;
26
27 @Autowired
28 public PersonForm(DummyService dummyService) {
29 this.dummyService = dummyService;
30 }
31
32 @RequestMapping(method = RequestMethod.GET)
33 public String setupForm(@RequestParam("personId") int id, ModelMap model) { //用requestparam绑定personId这个url值，赋给id
34 Person person = this.dummyService.retrievePerson(id);
35 model.addAttribute("person", person);
36 return "personForm";
37 }
38
39 @RequestMapping(method = RequestMethod.POST)
40 public String processSubmit(@ModelAttribute("person") Person person,
41 BindingResult result, SessionStatus status) {
42 System.err.println("redirect");
43 this.dummyService.savePerson(person);
44 status.setComplete();
45 return "redirect:personDisplay.htm";
46 }
47 }
7.在WebRoot下建jsp文件夹：建两个jsp文件：personDisplay.jsp personForm.jsp
personDisplay.jsp
1 <%@ page language="java" session="false"
2 contentType="text/html; charset=UTF-8"%>
3
4 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
5
6 <jsp:useBean id="personList" scope="request"
7 type="java.util.List<paul.sydney.model.Person>" />
8 <html>
9 <head>
10 <title>Adobocode : Sample Spring MVC using JSTL iteration</title>
11 </head>
12 <body>
13 <h2>
14 Adobocode : Person List 明明用了JSTL啊！
15 </h2>
16 <table border="1">
17 <tr>
18 <th>
19 Id
20 </th>
21 <th>
22 Name
23 </th>
24 <th>
25 Age
26 </th>
27 <th>
28 Address
29 </th>
30 </tr>
31 <c:forEach var="p" items="${personList}">
32 <tr>
33 <td>
34 <c:url var="editUrl" value="personForm.htm">
35 <c:param name="personId" value="${p.id}" />
36 </c:url>
37 <a href=‘<c:out value="${editUrl}"/>‘>${p.id}</a>
38 </td>
39 <td>
40 ${p.name}
41 </td>
42 <td>
43 ${p.age}
44 </td>
45 <td>
46 ${p.address}
47 </td>
48 </tr>
49 </c:forEach>
50 </table>
51 </body>
52 </html>
personForm.jsp
1 <%@ page language="java" session="false" 2 contentType="text/html; charset=UTF-8"%> 3 <%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%> 4 <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%> 5 <html> 6 <head> 7 <title>Adobocode : Sample Spring MVC using Forms</title> 8 </head> 9 10 <body> 11 <h2> 12 Adobocode : Person Form 13 </h2> 14 <form:form modelAttribute="person"> 15 <form:hidden path="id" /> 16 <fieldset> 17 <table> 18 <tr> 19 <td> 20 Name名字！ 21 </td> 22 <td> 23 <form:input path="name" /> 24 </td> 25 </tr> 26 <tr> 27 <td> 28 Age年龄！ 29 </td> 30 <td> 31 <form:input path="age" /> 32 </td> 33 </tr> 34 <tr> 35 <td> 36 Address地址！ 37 </td> 38 <td> 39 <form:input path="address" /> 40 </td> 41 </tr> 42 <tr> 43 <td> 44 咆哮体！！！ 45 </td> 46 <td> 47 <input type="submit" id="save" name="_eventId_save" value="Save" /> 48 <input type="submit" onClick="history.go(-1);" 49 name="_eventId_cancel" value="Cancel" /> 50 </td> 51 </tr> 52 </table> 53 </fieldset> 54 </form:form> 55 </body> 56 </html>
8.部署在tomcat下运行。
时间： 2024-10-12 04:08:19