java 带有可选查询字符串的 Spring REST-ful uri
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Spring REST-ful uri with optional querystring
提问by user2170710
The normal uri which triggers the default controller to get all cars is just "/cars"
触发默认控制器获取所有汽车的普通 uri 只是“/cars”
I want to be able to search for cars aswell with an uri, for example: "/cars?model=xyz" which would return a list of matching cars. All the request parameters should be optional.
我希望能够使用 uri 搜索汽车，例如：“/cars?model=xyz”，它将返回匹配汽车的列表。所有请求参数都应该是可选的。
The problem is that even with the querystring the default controller triggers anyway and I always get "all cars: ..."
问题是，即使使用查询字符串，默认控制器也会触发，我总是得到“所有汽车：......”
Is there a way to do this with Spring without a separate search uri (like "/cars/search?..")?
有没有办法在没有单独搜索 uri（如“/cars/search?..”）的情况下用 Spring 做到这一点？
code:
代码：
@Controller
@RequestMapping("/cars")
public class CarController {
@Autowired
private CarDao carDao;
@RequestMapping(method = RequestMethod.GET, value = "?")
public final @ResponseBody String find(
@RequestParam(value = "reg", required = false) String reg,
@RequestParam(value = "model", required = false) String model
)
{
Car searchForCar = new Car();
searchForCar.setModel(model);
searchForCar.setReg(reg);
return "found: " + carDao.findCar(searchForCar).toString();
}
@RequestMapping(method = RequestMethod.GET)
public final @ResponseBody String getAll() {
return "all cars: " + carDao.getAllCars().toString();
}
}
采纳答案by DwB
Try a variation of this:
试试这个的变体：
@Controller
@RequestMapping("/cars")
public clas CarController
{
@RequestMapping(method = RequestMethod.get)
public final @ResponseBody String carsHandler(
final WebRequest webRequest)
{
String parameter = webRequest.getParameter("blammy");
if (parameter == null)
{
return getAll();
}
else
{
return findCar(webRequest);
}
}
}
回答by Sotirios Delimanolis
You can use
您可以使用
@RequestMapping(method = RequestMethod.GET, params = {/* string array of params required */})
public final @ResponseBody String find(@RequestParam(value = "reg") String reg, @RequestParam(value = "model") String model)
// logic
}
ie, the @RequestMappingannotation has a property called params. If allof the parameters that you specify are contained in your request (and all other RequestMappingrequirements match), then that method will be called.
即，@RequestMapping注释有一个名为 的属性params。如果您指定的所有参数都包含在您的请求中（并且所有其他RequestMapping要求都匹配），则将调用该方法。
