我有以下配置控制器，拦截器和服务。
this.dataGridView1.Anchor =
((System.Windows.Forms.AnchorStyles)
((((System.Windows.Forms.AnchorStyles.Top
| System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
当我尝试访问POST请求的 package com.example.demo.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import com.example.demo.interceptor.LogInterceptor;
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new LogInterceptor());
}
}
package com.example.demo.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class MineController {
@RequestMapping(value = { "/", "/test" })
public String test(Model model) {
System.out.println("-------- MainController.login Test --- ");
return "test";
}
@RequestMapping(value = { "admin/myLogin" })
public String oldLogin(Model model) {
System.out.println("-------- MainController.login old login --- ");
return "login";
}
@RequestMapping(value = { "admin/newLogin" })
public String newLogin(Model model) {
System.out.println("-------- MainController.login New login --- ");
return "login";
}
}
package com.example.demo.interceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
public class LogInterceptor extends HandlerInterceptorAdapter {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
long startTime = System.currentTimeMillis();
System.out.println("\n-------- LogInterception.preHandle --- ");
System.out.println("Request URL: " + request.getRequestURL());
System.out.println("Request Parameter: " + request.getParameter("name"));
System.out.println("Start Time: " + System.currentTimeMillis());
request.setAttribute("startTime", startTime);
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
System.out.println("\n-------- LogInterception.postHandle --- ");
System.out.println("Request URL: " + request.getRequestURL());
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
throws Exception {
long startTime = System.currentTimeMillis();
System.out.println("\n-------- LogInterception.afterCompletion --- ");
System.out.println("Request URL: " + request.getRequestURL());
System.out.println("Start Time: " + System.currentTimeMillis());
request.setAttribute("startTime", startTime);
}
}
package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
@ComponentScan("com.example.demo.*")
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
requestParameter时。它会给我null。
请帮助我如何在Interceptor中获取该参数值。？
答案 0 :(得分：1)
将您的WebMvcConfig更改为以下内容;
package com.example.demo.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import com.example.demo.interceptor.LogInterceptor;
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
@Override
public void addInterceptors(InterceptorRegistry registry) {
InterceptorRegistration registration = registry.addInterceptor(new LogInterceptor());
registration.addPathPatterns("/**"); // Or any specific path pattern
}
}