使用 POJO 对象绑定请求参数

  • 概述

　　Spring MVC 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值并且支持级联属性。这一特性在日常开发过程中使用频率比较高，开发效率也高，本文主要对 POJO 对象绑定请求参数做一个简单是示例。

  • 定义 POJO 对象
package rex.springmvc.domain;

public class User {
    private String userNm;

    private String pwd;

    private Integer age;

    private Address address;

    public String getUserNm() {
        return userNm;
    }

    public void setUserNm(String userNm) {
        this.userNm = userNm;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public Address getAddress() {
        return address;
    }

    public void setAddress(Address address) {
        this.address = address;
    }
}
package rex.springmvc.domain;

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;
    }
}
  • Handler
package rex.springmvc.handlers;

import org.apache.log4j.Logger;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import net.sf.json.JSONObject;
import rex.springmvc.domain.User;

@RequestMapping(value="/pojoTestHandler")
@Controller
public class PojoTestHandler {
    private static final Logger logger = Logger.getLogger(HelloWordHandler.class);
    private static final String SUCCESS = "success";

    @RequestMapping(value="/testPojo", method=RequestMethod.POST)
    public String testPojo(User user){
        JSONObject json = JSONObject.fromObject(user);
        logger.debug(json.toString());
        return SUCCESS;
    }
}
  • 页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>POJO Test</title>
</head>
<body>
    <form action="pojoTestHandler/testPojo" method="post">
        userNm: <input type="text" name="userNm"><br>
        pwd: <input type="password" name="pwd"><br>
        age: <input type="text" name="age"><br>
        province: <input type="text" name="address.province"><br>
        city: <input type="text" name="address.city"><br>
        <input type="submit" value="submit">
    </form>
</body>
</html>
  • 运行结果

　　　　

　　

 

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posted on 2017-03-22 01:41  RexFang  阅读(504)  评论(0)  编辑  收藏  举报

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