springmvc参数封装(八)

柔光的暖阳◎ 2022-06-12 05:14 158阅读 0赞

1.int类型封装  
接收参数方法

package com.study.controller;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    @Controller
    @RequestMapping("/user")
    public class UserController{ 
    
        @RequestMapping("/index")
        public String index(){
            return "index";
        }
    
        @RequestMapping("/toAdd")
        public String toAdd(){
            return "add";
        }
        @RequestMapping("/receiveInt")
        public String receiveInt(Integer id){
            System.out.println("id:"+id);
            return "success";
        }
    }

页面传递参数

2.字符串类型封装  
接收方法

@RequestMapping("/receiveStr")
        public String receiveStr(String name){
            System.out.println("name:"+name);
            return "success";
        }

页面参数传递

3.数组封装  
接收方法

@RequestMapping("/receiveArr")
        public String receiveArr(Integer[] ids){
            System.out.println("ids:"+ids);
            return "success";
        }

页面传递,多选框

4.接收pojo类型  
定义一个pojo

package com.study.domain;
    
    import java.io.Serializable;
    import java.util.Date;
    
    @SuppressWarnings("serial")
    public class User implements Serializable{ 
        private Integer id;
        private String userName;
        private Integer age;
        private Date birthday;
        public Integer getId() {
            return id;
        }
        public void setId(Integer id) {
            this.id = id;
        }
        public String getUserName() {
            return userName;
        }
        public void setUserName(String userName) {
            this.userName = userName;
        }
        public Integer getAge() {
            return age;
        }
        public void setAge(Integer age) {
            this.age = age;
        }
        public Date getBirthday() {
            return birthday;
        }
        public void setBirthday(Date birthday) {
            this.birthday = birthday;
        }
        @Override
        public String toString() {
            return "User [id=" + id + ", userName=" + userName + ", age=" + age + ", birthday=" + birthday + "]";
        }
    
    }

接收方法

@RequestMapping("/receiveUser")
        public String receiveUser(User user){
            System.out.println("user:"+user);
            return "success";
        }

页面参数传递

5.接收包装类型pojo  
定义一个pojo

package com.study.domain;
    
    import java.util.ArrayList;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    
    public class PackUser { 
        private User user;
        private List<User> userList = new ArrayList<User>();
        private Map<String, Object> map = new HashMap<String, Object>();
        public User getUser() {
            return user;
        }
        public void setUser(User user) {
            this.user = user;
        }
        public List<User> getUserList() {
            return userList;
        }
        public void setUserList(List<User> userList) {
            this.userList = userList;
        }
        public Map<String, Object> getMap() {
            return map;
        }
        public void setMap(Map<String, Object> map) {
            this.map = map;
        }
        @Override
        public String toString() {
            return "PackUser [user=" + user + ", userList=" + userList + ", map=" + map + "]";
        }
    
    }

接收方法

@RequestMapping("/receivePackUser")
        public String receivePackUser(PackUser packuser){
            System.out.println("packuser:"+packuser);
            return "success";
        }

页面参数传递

注:页面中user.需要与包装类中的变量一至.

6.接收List集合参数>  
注:由于list集合不能直接在方法中封装,需要先用pojo包装,本次使用属性为5的pojo类中的userList属性,接收方法也一样,页面参数传递修改下就可以  
页面参数传递

7.接收map  
注:也是使用5中定义的pojo包装类中的map属性,接收方法不变,页面传递修改  
页面参数传递