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做seo为什么要了解网站,营销伎巧第一季,网站的建设内容,美食app界面设计模板在Spring Boot中，你可以以多种方式获取当前请求的HttpServletRequest和HttpServletResponse对象。以下是几种常见的写法示例： 1. 在方法参数中声明最常见和推荐的方式是在控制器方法的参数中直接声明HttpServletRequest和HttpServletResponse对象。Sp…

在Spring Boot中，你可以以多种方式获取当前请求的HttpServletRequest和HttpServletResponse对象。以下是几种常见的写法示例：

1. 在方法参数中声明

最常见和推荐的方式是在控制器方法的参数中直接声明HttpServletRequest和HttpServletResponse对象。Spring Boot会自动将它们注入到方法中。

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;@RestController
public class MyController {@GetMapping("/hello1")public String hello1(HttpServletRequest request, HttpServletResponse response) {// 使用 request 对象String method = request.getMethod();String uri = request.getRequestURI();// 使用 response 对象response.setContentType("text/plain");response.setStatus(HttpServletResponse.SC_OK);return "Hello 1, Spring Boot!";}
}

2. 使用 @RequestMappingHandlerAdapter

你可以通过注入RequestMappingHandlerAdapter来手动获取HttpServletRequest和HttpServletResponse对象。这种方式比较灵活，但相对较少使用。

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;@RestController
public class MyController {@Autowiredprivate RequestMappingHandlerAdapter handlerAdapter;@GetMapping("/hello2")public String hello2(HttpServletRequest request, HttpServletResponse response) throws Exception {// 通过 handlerAdapter 获取 request 和 response 对象HttpServletRequest req = (HttpServletRequest) handlerAdapter.getWebBindingInitializer().getBindingContext().getModel().get("org.springframework.web.servlet.HandlerMapping.uriTemplateVariables");// 使用 request 对象String method = req.getMethod();String uri = req.getRequestURI();// 使用 response 对象response.setContentType("text/plain");response.setStatus(HttpServletResponse.SC_OK);return "Hello 2, Spring Boot!";}
}

3. 使用 ThreadLocal

另一种方式是使用ThreadLocal来存储当前的HttpServletRequest和HttpServletResponse对象，然后在需要时从ThreadLocal中获取。

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;@RestController
public class MyController {@GetMapping("/hello3")public String hello3() {// 从 RequestContextHolder 中获取 ServletRequestAttributesServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();// 获取 HttpServletRequest 对象HttpServletRequest request = attributes.getRequest();// 获取 HttpServletResponse 对象HttpServletResponse response = attributes.getResponse();// 使用 request 对象String method = request.getMethod();String uri = request.getRequestURI();// 使用 response 对象response.setContentType("text/plain");response.setStatus(HttpServletResponse.SC_OK);return "Hello 3, Spring Boot!";}
}