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Spring MVC入门实例

2015-05-09 21:36 197 查看
实例主页是：http://localhost:8080/HelloWeb/student

 

HelloController.java

package com.yiibai;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.ui.ModelMap;

@Controller
public class HelloController{

@RequestMapping(value="student", method = RequestMethod.GET)
public ModelAndView student() {
return new ModelAndView("student", "command", new Student());
}

@RequestMapping(value="addStudent" , method = RequestMethod.POST)
public String addStudent(@ModelAttribute("student")Student student, ModelMap model){
System.out.println(student.getName());
System.out.println(student.getAge());
System.out.println(student.getId());
model.addAttribute("name",student.getName());
model.addAttribute("age",student.getAge());
model.addAttribute("id",student.getId());
return "result";
}

}


Student.java

package com.yiibai;

public class Student {

private String name;
private Integer age;
private Integer id;
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}

}


result.jsp

<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
<title>Spring MVC Form Handling</title>
</head>
<body>

<h2>Submitted Student Information</h2>
<table>
<tr>
<td>Name</td>
<td>${name}</td>
</tr>
<tr>
<td>Age</td>
<td>${age}</td>
</tr>
<tr>
<td>ID</td>
<td>${id}</td>
</tr>
</table>
</body>
</html>

 

student.jsp

<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%@taglib prefix="frm" uri="http://www.springframework.org/tags/form" %>
<html>
<head>
<title>Spring MVC Form Handling</title>
</head>
<body>

<h2>Student Information</h2>
<frm:form modelAttribute="student" name="newStudent" method="POST" action="addStudent">
<table>
<tbody>
<tr>
<td><label path="name">Name</label></td>
<td><input name="name" type="text"></td>
</tr>
<tr>
<td><label path="name">age</label></td>
<td><input name="age" type="text"></td>
</tr>
<tr>
<td><label path="name">id</label></td>
<td><input name="id" type="text"></td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="Submit"/>
</td>
</tr>
</table>
</tbody>
</frm:form>
</body>
</html>


web.xml

<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> 
<display-name>Spring MVC Application</display-name>

<servlet>
<servlet-name>HelloWeb</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>

<!-- 用spring Encoding,解决乱码问题 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<servlet-mapping>
<servlet-name>HelloWeb</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>hello.jsp</welcome-file>
</welcome-file-list>

</web-app>


HelloWeb-servlet.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<context:component-scan base-package="com.yiibai" />

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>

</beans>


精彩点;

1、页面传递过程中汉字会产生乱码，解决的办法是在web.xml中加入下面代码：

<!-- 用spring Encoding,解决乱码问题 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>


 

2、表格提交时是使用frm标签，该标签会封装表单数据成为一个对象

<frm:form modelAttribute="student" name="newStudent" method="POST" action="addStudent">


最后运行的结果是：



 

源代码下载http://download.csdn.net/detail/nanfeng224/8681025
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