SpringMVC 参数传递

各种参数传递方式

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("test")
public class TestParam {
   
   
	
	//RedirectView重定向
	@RequestMapping("/testParam1.do")
	public ModelAndView testParam() {
   
   
		RedirectView view = new RedirectView("testParam.do");
		return new ModelAndView(view);
	}
	
	//返回String
	@RequestMapping("/testParam.do")
	public String testParam() {
   
   
		return "error";
		return "redirct:testParamX.do";
	}

	//ModelAttribute绑定数据
	@RequestMapping("/testParam.do")
	public ModelAndView testParam(@ModelAttribute("username")String username) {
   
   
		System.out.println(username);
		return new ModelAndView("hello");