springMVC(9) springMVC参数传递

最新推荐文章于 2022-12-16 19:06:54 发布

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本文介绍了一个使用Spring MVC框架实现参数传递的例子。通过DataController控制器处理用户输入，并展示如何在addUser.jsp页面中获取这些参数。此外，还介绍了如何配置乱码过滤器确保字符正确显示。

页面参数传递到controller，可被同名(与页面标签上的name名对应)的参数接收，用request设值，页面再取出来。注意乱码解决办法，如果是get提交，则在tomcat的server.xml里配置中加上URIEncoding=”UTF-8”，如果是post提交，则在web.xml中配置spring提供的过滤器。代码如下：

DataController：

package com.xdy.controller.annotation;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/data")
public class DataController{
	
	@RequestMapping("/addUser")
	public String addUser(HttpServletRequest request,String userName,Integer age){
		request.setAttribute("userName",userName);
		request.setAttribute("age",age);
		return "/userManager";
	}
	
	@RequestMapping("/show")
	public String show(){
		return "/addUser";
	}
}

addUser.jsp：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>springMVC参数传递</title>
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
  </head>
  <body>
    <h1>springMVC参数传递</h1>
    <form action="/springMvc6/data/addUser" method="post">
	    用户名：<input type="text" name="userName"><br/>
	    年龄:<input type="text" name="age"><br/>
	    <input type="submit" value="post提交">
    </form>
  </body>
</html>

spring-annotation.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:p="http://www.springframework.org/schema/p"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	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.xsd    
      http://www.springframework.org/schema/mvc    
      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
	<context:component-scan base-package="com.xdy.controller.annotation"/>
	<mvc:annotation-driven/>
	<!-- 配置解析器 -->
	<bean id="viewResolver"
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/" />
		<property name="suffix" value=".jsp" />
	</bean>
</beans>

Web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">
	<servlet>
		<servlet-name>springMVC</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:config/spring-annotation.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>

	<!-- 乱码过滤器配置 -->
	<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>
	</filter>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

</web-app>

userManager.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>springMVC参数传递</title>
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
  </head>
  <body>
    <h1>springMVC参数传递</h1>
    欢迎你，${userName }
  </body>
</html>