SpringMvc--后续（参数问题）

参数问题

package com.hwq.controller;import com.hwq.beans.User;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;import javax.servlet.http.HttpServletRequest;
import java.sql.Array;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.logging.SimpleFormatter;@Controller
public class ParamController {@InitBinderpublic void initData(WebDataBinder web){//将日期格式转化成yyyy-MM-ddweb.registerCustomEditor(Date.class,new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"),true));}/*方式一：传统request接收参数param1?id=1get中文乱码问题：调整Tomcat服务器server.xml配置post中文乱码（偏码过滤器）在web.xml中配置过滤器<filter><filter-name>encodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>UTF-8</param-value></init-param><init-param><param-name>forceEncoding</param-name><param-value>true</param-value></init-param></init-param></filter><filter-mapping><filter-name>encodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping>*/@RequestMapping("/param1")public String Param1(HttpServletRequest request){String name = request.getParameter("name");System.out.println("name="+name);return "index";}/*方式二：直接使用参数接收参数param2?id=12*/@RequestMapping("/param2")public String Param1(String name){System.out.println("id="+name);return "index";}/*方式三：使用数组接收参数      int integer[]param3?hobby=睡觉&hobby=打豆豆*/@RequestMapping("/param3")public String Param3(String[] hobby){System.out.println("likes="+ Arrays.toString(hobby));return "index";}/*方式四：使用集合接收参数param4?hobby=睡觉&hobby=打豆豆*/@RequestMapping("/param4")public String Param4(@RequestParam("hobby") List<String> hobby){System.out.println("likes="+ hobby);return "index";}/*方式五：日期   接收参数方式一：字符串接收param5?data=2019-09-09方式二：形式参数直接接收，这种方式对日期格式有严格要求yyyy/MM/ddparam51?data=2019/09/09方式三：使用日期初始化绑定@InitBinderpublic void initData(WebDataBinder web){//将日期格式转化成yyyy-MM-ddweb.registerCustomEditor(Date.class,new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"),true));}*/@RequestMapping("/param5")public String Param5(String data){System.out.println("data="+ data);//将字符串转化成日期SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");try {Date parse = simpleDateFormat.parse(data);System.out.println("parse="+parse);} catch (ParseException e) {e.printStackTrace();}return "index";}@RequestMapping("/param51")public String Param51(Date data){System.out.println("data="+ data);//将字符串转化成日期return "index";}@RequestMapping("/param52")public String Param52(Date data){System.out.println("data="+ data);//将字符串转化成日期return "index";}/*方式六：RestFull风格传参*/@RequestMapping("/param6/{id}/{name}")public String Param6(@PathVariable("id") Integer id, @PathVariable("name") String name){System.out.println("id="+id+"name="+name);return "index";}/*方式七：对象传参*/@RequestMapping("/param7")public String Param7(User user){System.out.println("user="+user);System.out.println(user.getGroup());return "index";}}

方式一：传统request接收参数

方式二：直接使用参数接收参数

创建一个add.jsp

方式三：使用数组接收参数

方式四：使用集合接收参数

方式五：日期 接收参数

/*
方式五：日期   接收参数方式一：字符串接收param5?data=2019-09-09方式二：形式参数直接接收，这种方式对日期格式有严格要求yyyy/MM/ddparam51?data=2019/09/09方式三：使用日期初始化绑定@InitBinderpublic void initData(WebDataBinder web){//将日期格式转化成yyyy-MM-ddweb.registerCustomEditor(Date.class,new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"),true));}*/
@RequestMapping("/param5")
public String Param5(String data){System.out.println("data="+ data);//将字符串转化成日期SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");try {Date parse = simpleDateFormat.parse(data);System.out.println("parse="+parse);} catch (ParseException e) {e.printStackTrace();}return "index";
}
@RequestMapping("/param51")
public String Param51(Date data){System.out.println("data="+ data);//将字符串转化成日期return "index";
}
@RequestMapping("/param52")
public String Param52(Date data){System.out.println("data="+ data);//将字符串转化成日期return "index";
}

方式六：RestFull风格传参

创建一个User类

package com.hwq.beans;import java.util.Date;
import java.util.List;public class User {private int id;private String username;private String password;private int age;private List<String> hobby;private Date data;private Group group;public Group getGroup() {return group;}public void setGroup(Group group) {this.group = group;}public User() {}public User(int id, String username, String password, int age, List<String> hobby, Date data) {this.id = id;this.username = username;this.password = password;this.age = age;this.hobby = hobby;this.data = data;}public int getId() {return id;}public void setId(int id) {this.id = id;}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public List<String> getHobby() {return hobby;}public void setHobby(List<String> hobby) {this.hobby = hobby;}public Date getData() {return data;}public void setData(Date data) {this.data = data;}@Overridepublic String toString() {return "User{" +"id=" + id +", username='" + username + '\'' +", password='" + password + '\'' +", age=" + age +", hobby=" + hobby +", data=" + data +'}';}
}

Group类

方式七：对象传参