弹簧映射 GET 请求参数自动发送到 POJO

java spring spring-mvc

2022-09-02 01:14:32

我在REST控制器中有包含大量参数的方法。例如：

@RequestMapping(value = "/getItem", method = RequestMethod.GET)
public ServiceRequest<List<SomeModel>> getClaimStatuses(
        @RequestParam(value = "param1", required = true) List<String> param1,
        @RequestParam(value = "param2", required = false) String param2,
        @RequestParam(value = "param3", required = false) List<String> param3,
        @RequestParam(value = "param4", required = false) List<String> param4,
        @RequestParam(value = "param5", required = false) List<String> param5) {
    // ......
}

我想将所有GET请求参数映射到POJO对象，例如：

public class RequestParamsModel {

   public RequestParamsModel() {

   }

   public List<String> param1;
   public String param2;
   public List<String> param3;
   public String param4;
   public String param5;
}

我需要一些像我们在REST Controller中使用@RequestBody一样的东西。

有可能在春季3.x中做吗？

谢谢！

答案 1

可能且简单，请确保您的bean具有适当的字段访问器。您可以为每个属性添加适当的验证，只需确保已准备好正确的 jar 即可。就代码而言，它将是这样的

import javax.validation.constraints.NotNull;

public class RequestParamsModel {

    public RequestParamsModel() {}

    private List<String> param1;
    private String param2;
    private List<String> param3;
    private String param4;
    private String param5;

    @NotNull
    public List<String> getParam1() {
        return param1;
    }
    //  ...
}

控制器方法是：

import javax.validation.Valid;

@RequestMapping(value = "/getItem", method = RequestMethod.GET)
public ServiceRequest<List<SomeModel>> getClaimStatuses(@Valid RequestParamsModel model) {
    // ...
}

还有请求，如下所示：

/getItem?param1=list1,list2&param2=ok

答案 2

你想做什么

@RequestMapping(value = "/getItem", method = RequestMethod.GET)
public ServiceRequest<List<SomeModel>> getClaimStatuses(@ModelAttribute RequestParamsModel requestParamModel) {
...
}