标签：映射 img 技术 例子 ppi control org class orm
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
1 package com.loger.controller; 2 3 import org.springframework.stereotype.Controller; 4 import org.springframework.web.bind.annotation.RequestMapping; 5 6 7 @Controller 8 public class RequestParam { 9 10 public static final String SUCCESS = "success"; 11 12 @RequestMapping(value="/requestparam") 13 public String requestParam(@org.springframework.web.bind.annotation. 14 RequestParam(value="username") String un, 15 @org.springframework.web.bind.annotation.RequestParam(value="age") Integer age){ 16 17 System.out.println(un + " " + age); 18 19 return SUCCESS; 20 } 21 }
2.index.jsp
运行结果：
补充：如何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
1 package com.loger.bean; 2 3 public class Address { 4 private String province; 5 private String city; 6 public String getProvince() { 7 return province; 8 } 9 public void setProvince(String province) { 10 this.province = province; 11 } 12 public String getCity() { 13 return city; 14 } 15 public void setCity(String city) { 16 this.city = city; 17 } 18 @Override 19 public String toString() { 20 return "Address [province=" + province + ", city=" + city + "]"; 21 } 22 23 }
2.新建User类
1 package com.loger.bean; 2 3 public class Address { 4 private String province; 5 private String city; 6 public String getProvince() { 7 return province; 8 } 9 public void setProvince(String province) { 10 this.province = province; 11 } 12 public String getCity() { 13 return city; 14 } 15 public void setCity(String city) { 16 this.city = city; 17 } 18 @Override 19 public String toString() { 20 return "Address [province=" + province + ", city=" + city + "]"; 21 } 22 23 }
3.controller
4.表单
User有级联属性Address，表单传入的参数是address.city address.province
1 <form action="pojoparam"> 2 姓名：<input type="text" name="name"><br> 3 年龄：<input type="text" name="age"><br> 4 城市：<input type="text" name="address.city"><br> 5 省份：<input type="text" name="address.province"><br> 6 <input type="submit" value="提交"><br> 7 </form>
运行结果：
标签：映射 img 技术 例子 ppi control org class orm
原文地址：http://www.cnblogs.com/loger1995/p/6274717.html
