我如何将一个Map参数作为GET param在url中传递给Spring REST控制器?
有不同的方式(但简单的@RequestParam('myMap')Map<String,String>
不起作用)
(IMHO)最简单的解决方案是使用命令对象然后你可以在url中使用[key]
来指定map键:
@Controller
@RequestMapping("/demo")
public class DemoController {
public static class Command{
private Map<String, String> myMap;
public Map<String, String> getMyMap() {return myMap;}
public void setMyMap(Map<String, String> myMap) {this.myMap = myMap;}
@Override
public String toString() {
return "Command [myMap=" + myMap + "]";
}
}
@RequestMapping(method=RequestMethod.GET)
public ModelAndView helloWorld(Command command) {
System.out.println(command);
return null;
}
}
Command [myMap={line1=hello, line2=world}]
用Spring Boot 1.2.7测试
只需在注释后添加Map对象,就可以在Map中绑定所有请求参数:
@RequestMapping("/demo")
public String example(@RequestParam Map<String, String> map){
String apple = map.get("AAA");//apple
String banana = map.get("BBB");//banana
return apple + banana;
}
请求
/演示?AAA =苹果&BBB =香蕉
来源 - https://reversecoding.net/spring-mvc-requestparam-binding-request-parameters/