一、创建工程,搭建springmvc
1. 配置wem.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<!-- 配置 DispatcherServlet -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置 DispatcherServlet 的一个初始化参数: 配置 SpringMVC 配置文件的位置和名称 -->
<!--
实际上也可以不通过 contextConfigLocation 来配置 SpringMVC 的配置文件, 而使用默认的.
默认的配置文件为: /WEB-INF/<servlet-name>-servlet.xml
-->
<!--
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
-->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--乱码处理 -->
<filter>
<filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
2. 创建springmvc-servlet.xml配置文件,并存放WEB-INF下
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 配置自定扫描的包 -->
<context:component-scan base-package="com"></context:component-scan>
<!-- 配置视图解析器: 如何把 handler 方法返回值解析为实际的物理视图 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!-- 配置视图 BeanNameViewResolver 解析器: 使用视图的名字来解析视图 -->
<!-- 通过 order 属性来定义视图解析器的优先级, order 值越小优先级越高 -->
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver">
<property name="order" value="100"></property>
</bean>
<!-- 配置国际化资源文件 -->
<bean id="messageSource"
class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basename" value="i18n"></property>
</bean>
<!-- 在实际开发中通常都需配置 mvc:annotation-driven 标签 -->
<mvc:annotation-driven></mvc:annotation-driven>
</beans>
二、基本类型和包装类型绑定
1、基本类型绑定
@RequestMapping("baseType.do")
@ResponseBody
public String baseType(int age){
return "age:"+age;
}
2、包装类型绑定
@RequestMapping("baseType2.do")
@ResponseBody
public String baseType2(Integer age){
return "age:"+age;
}
3、JSP页面
<form action="baseType.do">
<h1>基本数据类型</h1>
年龄:<input type="text" name="age">
<input type="submit" value="提交">
</form>
<hr/>
<form action="baseType2.do">
<h1>包装数据类型</h1>
年龄:<input type="text" name="age">
<input type="submit" value="提交">
</form>
4、基本数据类型和包装类绑定区别?
基本类型不能为空,如果为空,出现404错误
包装类型可以为空
三、对象的数据绑定
1、简单对象和多层级对象
创建实体类UserInfo和Department
UserInfo类
package com.liu;
public class UserInfo {
private Integer id;
private String name;
private Integer age;
private Department depart;
public Department getDepart() {
return depart;
}
public void setDepart(Department depart) {
this.depart = depart;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
@Override
public String toString() {
return "UserInfo [id=" + id + ", name=" + name + ", age=" + age + ", depart=" + depart + "]";
}
}
Department类
package com.liu;
public class Department {
private Integer deId;
private String deName;
public Integer getDeId() {
return deId;
}
public void setDeId(Integer deId) {
this.deId = deId;
}
public String getDeName() {
return deName;
}
public void setDeName(String deName) {
this.deName = deName;
}
@Override
public String toString() {
return "Department [deId=" + deId + ", deName=" + deName + "]";
}
}
2、绑定代码:
@RequestMapping("object.do")
@ResponseBody
public String object(UserInfo user){
return "UserInfo:"+user;
}
3、JSP页面
<form action="object.do">
<h1>对象数据绑定</h1>
编号:<input type="text" name="id"/><br/>
姓名:<input type="text" name="name"/><br/>
年龄:<input type="text" name="age"><br/>
部门编号:<input type="text" name="depart.deId"><br/>
部门名称:<input type="text" name="depart.deName"><br/>
<input type="submit" value="提交">
</form>
4. 同属性多对象绑定
@RequestMapping("object2.do")
@ResponseBody
public String object2(UserInfo user,Admin admin){
return user+" "+admin;
}
@InitBinder("userInfo")
public void initUser(WebDataBinder binder){
binder.setFieldDefaultPrefix("user.");
}
@InitBinder("admin")
public void initAdmin(WebDataBinder binder){
binder.setFieldDefaultPrefix("admin.");
}
页面内容
<form action="object.do">
<h1>同属性多对象</h1>
user编号:<input type="text" name="user.id"/><br/>
user姓名:<input type="text" name="user.name"/><br/>
user年龄:<input type="text" name="user.age"><br/>
admin编号:<input type="text" name="admin.id"/><br/>
admin姓名:<input type="text" name="admin.name"/><br/>
admin年龄:<input type="text" name="admin.age"><br/>
<input type="submit" value="提交">
</form>
三、数组、list、set、map数据绑定
1、数组
代码:
@RequestMapping("array.do")
@ResponseBody
public String array(String[] name){
StringBuffer sb = new StringBuffer();
for(String s:name){
sb.append(s).append(",");
}
return sb.toString();
}
JSP页面:
<form action="array.do">
<h1>数组</h1>
姓名:<input type="text" name="name"/><br/>
姓名:<input type="text" name="name"/><br/>
姓名:<input type="text" name="name"/><br/>
姓名:<input type="text" name="name"/><br/>
<input type="submit" value="提交">
</form>
2、list绑定
创建类UserListForm:
package com.liu;
import java.util.List;
public class UserListForm {
private List<UserInfo> user;
public List<UserInfo> getUser() {
return user;
}
public void setUser(List<UserInfo> user) {
this.user = user;
}
@Override
public String toString() {
return "UserListForm [user=" + user + "]";
}
}
Controller类:
@RequestMapping("list.do")
@ResponseBody
public String list(UserListForm userListForm){
return userListForm.toString();
}
JSP页面信息:
<form action="list.do">
<h1>List</h1>
编号:<input type="text" name="user[0].id"/><br/>
姓名:<input type="text" name="user[0].name"/><br/>
年龄:<input type="text" name="user[0].age"><br/>
编号:<input type="text" name="user[1].id"/><br/>
姓名:<input type="text" name="user[1].name"/><br/>
年龄:<input type="text" name="user[1].age"><br/>
<input type="submit" value="提交">
</form>
3、Set绑定
创建UserSetForm:
package com.liu;
import java.util.HashSet;
import java.util.Set;
public class UserSetForm {
private Set<UserInfo> user;
public UserSetForm() {
user = new HashSet();
user.add(new UserInfo());
user.add(new UserInfo());
}
public Set<UserInfo> getUser() {
return user;
}
public void setUser(Set<UserInfo> user) {
this.user = user;
}
@Override
public String toString() {
return "UserSetForm [user=" + user + "]";
}
}
Controller类
@RequestMapping("set.do")
@ResponseBody
public String set(UserSetForm userSetForm){
return userSetForm.toString();
}
JSP页面:
<form action="set.do">
<h1>Set</h1>
编号:<input type="text" name="user[0].id"/><br/>
姓名:<input type="text" name="user[0].name"/><br/>
年龄:<input type="text" name="user[0].age"><br/>
编号:<input type="text" name="user[1].id"/><br/>
姓名:<input type="text" name="user[1].name"/><br/>
年龄:<input type="text" name="user[1].age"><br/>
<input type="submit" value="提交">
</form>
4、Map绑定
创建UserMapForm
package com.liu;
import java.util.Map;
public class UserMapForm {
public Map<String,UserInfo> users;
public Map<String, UserInfo> getUsers() {
return users;
}
public void setUsers(Map<String, UserInfo> users) {
this.users = users;
}
@Override
public String toString() {
return "UserMapForm [users=" + users + "]";
}
}
Controller类:
@RequestMapping("map.do")
@ResponseBody
public String map(UserMapForm userMapForm){
return userMapForm.toString();
}
JSP页面
<form action="map.do">
<h1>Map</h1>
编号:<input type="text" name='users["x"].id'/><br/>
姓名:<input type="text" name='users["x"].name'/><br/>
年龄:<input type="text" name='users["x"].age'><br/>
编号:<input type="text" name='users["y"].id'/><br/>
姓名:<input type="text" name='users["y"].name'/><br/>
年龄:<input type="text" name='users["y"].age'><br/>
<input type="submit" value="提交">
</form>
本文作者:网友 来源:CSDN博客
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