使用Ajax调用

//pass the parameters to front-end using ajax
@RequestMapping("/getPerson")
public void getPerson(String name,PrintWriter pw){
    pw.write("hello,"+name);        
}
@RequestMapping("/name")
public String sayHello(){
    return "name";
}

//redirect 
@RequestMapping("/redirect")
public String redirect(){
    return "redirect:hello";
}