自定义servlet

src/main/java/com/api/ApiApplication.java

@@ -12,6 +12,7 @@ import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.autoconfigure.web.servlet.HttpEncodingAutoConfiguration;
 import org.springframework.boot.autoconfigure.web.servlet.WebMvcProperties;
+import org.springframework.boot.web.servlet.ServletComponentScan;
 import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.web.filter.CharacterEncodingFilter;
@@ -19,6 +20,7 @@ import org.springframework.web.servlet.DispatcherServlet;
 
 @SpringBootApplication
 @ComponentScan({"com.common","com.api"})
+@ServletComponentScan("com.common.servlet")
 public class ApiApplication {
 
 	public static void main(String[] args) {

src/main/java/com/api/config/RegisterConfig.java

@@ -0,0 +1,18 @@
+package com.api.config;
+
+import com.common.servlet.MyServlet;
+import org.springframework.boot.web.servlet.FilterRegistrationBean;
+import org.springframework.boot.web.servlet.ServletRegistrationBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class RegisterConfig {
+    @Bean
+    public ServletRegistrationBean servletRegistrationBean() {
+        return new ServletRegistrationBean(new MyServlet(),"/psy");
+    }
+//    public FilterRegistrationBean filterRegistrationBean() {
+//        return new FilterRegistrationBean()
+//    }
+}

src/main/java/com/api/controller/ModelAndMapController.java

@@ -1,6 +1,7 @@
 package com.api.controller;
 
 import com.api.form.LoginForm;
+import com.common.exception.RRException;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.*;
@@ -46,7 +47,12 @@ public class ModelAndMapController {
     }
     @PostMapping("postTest")
     @ResponseBody
-    public LoginForm postTest(@RequestBody LoginForm loginForm) {
+    public LoginForm postTest(
+            @RequestParam("company_id2") Integer companyId2,
+            @RequestParam("company_id") Integer companyId,
+                              LoginForm loginForm) {
+//        throw new RRException("aa");
+        int i = 10/0;
         return loginForm;
     }
 

src/main/java/com/common/exception/RRExceptionHandler.java

@@ -14,6 +14,7 @@ import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.MissingServletRequestParameterException;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
+import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;
 import org.springframework.web.servlet.NoHandlerFoundException;
 
 @Slf4j
@@ -110,6 +111,10 @@ public class RRExceptionHandler {
 //        logUtils.requestLog(e);
         return R.error("数据格式错误");
     }
+    @ExceptionHandler(MethodArgumentTypeMismatchException.class)
+    public R handlerMethodArgumentTypeMismatchException(MethodArgumentTypeMismatchException e) {
+        return R.error("参数不匹配！");
+    }
 
     /**
      * 处理请求方法不支持异常

src/main/java/com/common/filter/MyFilter.java

@@ -0,0 +1,23 @@
+package com.common.filter;
+
+import javax.servlet.*;
+import javax.servlet.annotation.WebFilter;
+import java.io.IOException;
+
+@WebFilter(urlPatterns = {"/my"})
+public class MyFilter implements Filter {
+    @Override
+    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
+
+    }
+
+    @Override
+    public void init(FilterConfig filterConfig) throws ServletException {
+        System.out.println("initMyFilter");
+    }
+
+    @Override
+    public void destroy() {
+        Filter.super.destroy();
+    }
+}

src/main/java/com/common/servlet/MyServlet.java

@@ -0,0 +1,18 @@
+package com.common.servlet;
+
+import org.springframework.stereotype.Component;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+//@WebServlet(urlPatterns = "/my")
+public class MyServlet extends HttpServlet {
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        resp.getWriter().write("myservlet");
+    }
+}

src/main/resources/application.yml

@@ -36,6 +36,7 @@ spring:
   mvc:
     contentnegotiation:
       favor-parameter: true
+#    throw-exception-if-no-handler-found: true
 renren:
   redis:
     open: false  # 是否开启redis缓存  true开启   false关闭