使用POJO作为参数
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"><display-name></display-name> <!-- 配置org.springframework.web.filer.HiddenHttpMethodFilter:可以把POST请求转为DELETE或POST请求--><filter><filter-name>HiddenHttpMethodFilter</filter-name><filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class></filter><filter-mapping><filter-name>HiddenHttpMethodFilter</filter-name><!-- 过滤所有请求 --><url-pattern>/*</url-pattern></filter-mapping><!-- 配置DispatcherServlet --><servlet><servlet-name>springDispatcherServlet</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--><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:springmvc.xml</param-value></init-param><!-- 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/WEB-INF/springDispatcherServlet-servlet.xml--><!-- 设置启动 --><load-on-startup>1</load-on-startup></servlet><servlet-mapping><!-- 请求处理 --><servlet-name>springDispatcherServlet</servlet-name><!-- /:应答所有请求 --><url-pattern>/</url-pattern></servlet-mapping><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list> </web-app>
springmvc.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"xmlns:aop="http://www.springframework.org/schema/aop"xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/tx/spring-mvc-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd"><!-- 配置自定义扫描包 --><context:component-scan base-package="como.springmvc.handlers"></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"><!-- 前缀 --><property name="prefix" value="/WEB-INF/views/"></property><!-- 后缀 --><property name="suffix" value=".jsp"></property></bean></beans>
实体类代码：
User.java
package com.springmvc.entity;public class User {private String username;private String password;private String email;private int age;private Address address;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getEmail() {return email;}public void setEmail(String email) {this.email = email;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public Address getAddress() {return address;}public void setAddress(Address address) {this.address = address;}@Overridepublic String toString() {return "User [username=" + username + ", password="+ password + ", email=" + email + ", age=" + age+ ", address=" + address + "]";}}
Address.java
package com.springmvc.entity;public class Address {private String province;private String city;public String getProvince() {return province;}public void setProvince(String province) {this.province = province;}public String getCity() {return city;}public void setCity(String city) {this.city = city;}@Overridepublic String toString() {return "Address [province=" + province + ", city=" + city + "]";}}
Pojo.java
package como.springmvc.handlers;
import java.io.IOException;
import java.io.Writer;
import javax.servlet.http.*;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.springmvc.entity.User;
@Controller
@RequestMapping("/Pojo")
public class Pojo {
/*
* SpringMVC会按请求参数名和POJO属性名进行自动匹配
* 自动为该对象填充属性，支持级联属性
* 如：dept.deptId、dept.address.tel
* */
@RequestMapping("/testPojo")
public String testPojo(User user){
System.out.println("testPojo"+user);
return "success";
}
/*
* 可以使用Servlet原生的API作为目标方法的参数，具体支持一下类型
* HttpServletRequest
* HttpServletResponse
* HttpSession
* java.security.Principal
* Locale InputStream
* OutputStream
* Reader
* Writer
* */
@RequestMapping("/testServletAPI")
public void testServletAPI(HttpServletRequest request,
HttpServletResponse response,Writer out) throws IOException{
System.out.println("testServletAPI,"+request+","+response);
out.write("hello");
//return "success";
}
}
pojo.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'pojo.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
</head>
<body>
<form action="Pojo/testPojo" method="post"><br>
username:<input type="text" name="username" /><br>
password:<input type="password" name="password" /><br>
email:<input type="text" name="email" /><br>
age:<input type="text" name="age" /><br>
<!-- 级联属性 ：属性的属性 -->
city:<input type="text" name="address.city" /><br>
province:<input type="text" name="address.province" /><br>
<input type="submit" value="Value" />
</form>
<a href="Pojo/testServletAPI">Test ServletAPI</a>
</body>
</html>
success.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8" isErrorPage="true"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><base href="<%=basePath%>"><title>My JSP 'success.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">--></head><body>success page. <br></body> </html>
