SpringMVC后台接受前台传值的方法

1.HttpRequestServlet 接收前台传值

@RequestMapping("/go5")
public String hello5(HttpServletRequest request){
String name=request.getParameter("uname");
String id=request.getParameter("uid");
System.out.println(id+"----"+name);
return "/WEB-INF/jsp/index.jsp";
}

2.直接接收前台传值

//接收单个参数
@RequestMapping("/hello")
public String hello(String name){
System.out.println(name);
return "/WEB-INF/jsp/index.jsp";
}

//接收多个参数
@RequestMapping("/go2")
public String hello3(String name,int id){
System.out.println(name);
System.out.println(id);
return "/WEB-INF/jsp/index.jsp";
}

3.以对象形式接收前台传递的数据

//以对象形式接受参数
@RequestMapping("/go4")
public String hello5( Student stu){
System.out.println(stu.getName());
System.out.println(stu.getId());
return "/WEB-INF/jsp/index.jsp";
}

public class Student {//类中必须要有无参数构造函数不然会有java.lang.NoSuchMethodException: org.entity.Student.<init>()错误
private int id;
private String name;
public Student(int id, String name) {
super();
this.id = id;
this.name = name;
}

public Student() {
super();
}

}

url:http://localhost:7080/myweb/go5.do?uid=18&uname=ii

4.restful风格

//restful风格
@RequestMapping("/detete/{uid}/{uname}")
public String hello2(@PathVariable("uid")int id,@PathVariable("uname")String name){
System.out.println(id+"  ---->"+name);
return "/WEB-INF/jsp/index.jsp";
}

url:http://localhost:7080/myweb/go5.do?uid=18&uname=ii