SpringMVC-复杂参数处理

1.实体类

package com.hwy.entity;

public class Role {

    private Integer id;
    private String name;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Role{" +
                "id=" + id +
                ", name='" + name + ''' +
                '}';
    }
}

package com.hwy.entity;

import java.util.Arrays;
import java.util.List;
import java.util.Map;

public class User {

    private Integer id;
    private String name;
    private String[] alias; //外号
    private List hobbies; //兴趣爱好
    private Map relative; //亲属
    private Role role;
    private List friends; //朋友


    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String[] getAlias() {
        return alias;
    }

    public void setAlias(String[] alias) {
        this.alias = alias;
    }

    public List getHobbies() {
        return hobbies;
    }

    public void setHobbies(List hobbies) {
        this.hobbies = hobbies;
    }

    public Map getRelative() {
        return relative;
    }

    public void setRelative(Map relative) {
        this.relative = relative;
    }

    public Role getRole() {
        return role;
    }

    public void setRole(Role role) {
        this.role = role;
    }

    public List getFriends() {
        return friends;
    }

    public void setFriends(List friends) {
        this.friends = friends;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + ''' +
                ", alias=" + Arrays.toString(alias) +
                ", hobbies=" + hobbies +
                ", relative=" + relative +
                ", role=" + role +
                ", friends=" + friends +
                '}';
    }


}

复杂参数DTO类

package com.hwy.entity;

public class UserDTO {
    private User user;
    private Role role;

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }

    public Role getRole() {
        return role;
    }

    public void setRole(Role role) {
        this.role = role;
    }

    @Override
    public String toString() {
        return "UserDTO{" +
                "user=" + user +
                ", role=" + role +
                '}';
    }
}

2.控制类

package com.hwy.controller;

import com.hwy.entity.UserDTO;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.cookievalue;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Controller
public class ParamsController {
    

    @RequestMapping("/params01")
    public String param01(@RequestParam(value="username",required=false,defaultValue="婉婉") String name){
        System.out.println(name);
        return "index.jsp";
    }

    
    @RequestMapping("/params02")
    public String param02(UserDTO userDTO){
        System.out.println(userDTO);
        return "index.jsp";
    }

    
    @RequestMapping("/header")
    public String header(@RequestHeader("Host") String host){
        System.out.println(host);
        return "index.jsp";
    }

    

    @RequestMapping("/cookie")
    public String cookie(@cookievalue ("JSESSIONID")String jsSessionId ){
        System.out.println(jsSessionId);
        return "index.jsp";
    }

    
    @RequestMapping("/servlet")
    public String servlet(String username,HttpServletRequest request, HttpServletResponse response){
        System.out.println(username);
        String name = request.getParameter("name");
        System.out.println(name);
        request.setAttribute("name",name);

        return "index.jsp";
    }





}

3.JSP 类

<%--
  Created by IntelliJ IDEA.
  User: MSI-NB
  Date: 2021/12/7
  Time: 17:50
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    



不要放弃


    姓名:

        



    id: 

    姓名:

    外号:婉婉
        何何

    爱好:音乐
        跳舞

    亲属:爸爸
        妈妈

    角色:

    朋友:

        


        
角色
        id:

        姓名: