SpringMVC通过注解获得参数的实例

springmvc可以通过requestparam注解来映射获得参数，具体用法如下：

例子：

配置过程省略

1.新建controller类

package com.loger.controller;

import org.springframework.stereotype.controller;
import org.springframework.web.bind.annotation.requestmapping;


@controller
public class requestparam {
  
  public static final string success = "success";
  
  @requestmapping(value="/requestparam")
  public string requestparam(@org.springframework.web.bind.annotation.
      requestparam(value="username") string un,
      @org.springframework.web.bind.annotation.requestparam(value="age") integer age){
    
    system.out.println(un + " " + age);
    
    return success;
  }
}

2.index.jsp

运行结果：

补充：如果表单名跟方法的参数名一致的话，无需再用@requestparam注解来映射。

如改为

@requestmapping(value="/requestparam")
public string requestparam(string username,integer age)即可！

用类作为参数，且包含级联属性的参数获取方法：　　

1.新建adress类

package com.loger.bean;

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;
  }
  @override
  public string tostring() {
    return "address [province=" + province + ", city=" + city + "]";
  }
  
}

2.新建user类

package com.loger.bean;

public class user {
  private string name;
  private int age;
  private address address;
  public string getname() {
    return name;
  }
  public void setname(string name) {
    this.name = name;
  }
  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;
  }
  @override
  public string tostring() {
    return "user [name=" + name + ", age=" + age + ", address=" + address + "]";
  }
  
}

3.controller

4.表单

user有级联属性address，表单传入的参数是address.city address.province

<form action="pojoparam">
    姓名：<input type="text" name="name"><br>
    年龄：<input type="text" name="age"><br>
    城市：<input type="text" name="address.city"><br>
    省份：<input type="text" name="address.province"><br>
    <input type="submit" value="提交"><br>
  </form>

运行结果：

以上这篇springmvc通过注解获得参数的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。