基于POJO类型接收Client请求参数：
在实际中如果涉及到，网络通信、或者集群操作或者集群复制的话 这样的对象需要对其进行序列化，就需要实现Serializable接口；
POJO:User
package com.baizhiedu;public class User {private String name;private String password;private int age;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}@Overridepublic String toString() {return "User{" +"name='" + name + '\'' +", password='" + password + '\'' +", age=" + age +'}';}}
ParamController：param4
package com.baizhiedu;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import javax.servlet.http.HttpServletRequest;@Controller@RequestMapping("/param")public class ParamController {//通过request获取求情参数@RequestMapping("/param1")public String param1(HttpServletRequest request){String name=request.getParameter("name");String password=request.getParameter("password");System.out.println("name="+name);System.out.println("password="+password);return "param1";}//通过简单变量，获取请求参数@RequestMapping("/param2")public String param2(String name,String password){System.out.println("name="+name+" password="+password);return "param1";}//通过简单变量，获取请求参数,把http协议 传过来的字符串年龄，自动类型转换为整型@RequestMapping("/param3")public String param3(String name,Integer age){ //基本数据类型尽量使用包装器，如果不使用基本数据的包装类，如果在地址栏传值时没有给年龄int类型传值，默认为null,int类型不能接收null导致报错System.out.println("name="+name+"age="+age);return "param1";}//接收POJO类型的参数@RequestMapping("/param4")public String param4(User user){System.out.println("User="+user);return "param1";}//接收简单类型参数， POJO类型的参数@RequestMapping("/param4")public String param5(String name,User user){ //name形参和POJO里面的name属性都会获取内容System.out.println("User="+user);return "param1";}}
form.jsp:
<%--Created by IntelliJ IDEA.User: DELLDate: /6/3Time: 15:31To change this template use File | Settings | File Templates.--%><%@ page contentType="text/html;charset=UTF-8" language="java" %><%String path = request.getContextPath();String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";%><html><head><title>Title</title><base href="<%=basePath%>"></head><body><form method="post" action="${pageContext.request.contextPath}/param/param4">UserName:<input type="text" name="name" /><br>Password:<input type="text" name="password"/><br>Age:<input type="text" name="age"/><br><input type="submit" value="reg"></form></body></html>
