package com.day01springmvc.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;
@Controller
@RequestMapping("hello")
public class HelloController2 {
/**
* 接收普通请求参数
* http://localhost:8080/hello/show16?name=linuxsir
* url参数中的name必须要和@RequestParam("name")一致
* @return
*/
@RequestMapping("show16")
public ModelAndView test16(@RequestParam("name")String name){
ModelAndView mv = new ModelAndView();
mv.setViewName("hello2");
mv.addObject("msg", "接收普通的请求参数:" + name);
return mv;
}
/**
* 接收普通请求参数
* http://localhost:8080/hello/show17
* url中没有name参数不会报错、有就显示出来
* @return
*/
@RequestMapping("show17")
public ModelAndView test17(@RequestParam(value="name",required=false)String name){
ModelAndView mv = new ModelAndView();
mv.setViewName("hello2");
mv.addObject("msg", "接收普通请求参数:" + name);
return mv;
}
/**
* 接收普通请求参数
* http://localhost:8080/hello/show18?name=998 显示为998
* http://localhost:8080/hello/show18?name 显示为hello
* @return
*/
@RequestMapping("show18")
public ModelAndView test18(@RequestParam(value="name",required=true,defaultValue="hello")String name){
ModelAndView mv = new ModelAndView();
mv.setViewName("hello2");
mv.addObject("msg", "接收普通请求参数:" + name);
return mv;
}
}