BAEL-3335 example of reading request multiple times. removed spring boot and using spring-webmvc

Author: sumit-bhawsar

spring-core-2/src/main/java/org/baeldung/cachedrequest/ContentCachingFilter.java

@@ -4,6 +4,7 @@
 
 import javax.servlet.FilterChain;
 import javax.servlet.ServletException;
+import javax.servlet.annotation.WebFilter;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
@@ -14,9 +15,12 @@
 
 @Order(value = Ordered.HIGHEST_PRECEDENCE)
 @Component
+@WebFilter(filterName = "ContentCachingFilter", urlPatterns = "/*")
 public class ContentCachingFilter extends OncePerRequestFilter {
+
     @Override
     protected void doFilterInternal(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, FilterChain filterChain) throws ServletException, IOException {
+        System.out.println("IN  ContentCachingFilter ");
         CachedBodyHttpServletRequest cachedBodyHttpServletRequest = new CachedBodyHttpServletRequest(httpServletRequest);
         filterChain.doFilter(cachedBodyHttpServletRequest, httpServletResponse);
     }

spring-core-2/src/main/java/org/baeldung/cachedrequest/HttpRequestDemoConfig.java

@@ -1,37 +1,17 @@
 package org.baeldung.cachedrequest;
 
-import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.web.servlet.ViewResolver;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
-import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
-import org.springframework.web.servlet.view.InternalResourceViewResolver;
-import org.springframework.web.servlet.view.JstlView;
+/**
+ * To initialize the WebApplication, Please see
+ * {@link org.baeldung.spring.config.MainWebAppInitializer}
+ */
 
 @EnableWebMvc
 @Configuration
+@ComponentScan(basePackages = "org.baeldung.cachedrequest")
 public class HttpRequestDemoConfig implements WebMvcConfigurer {
 
-    public HttpRequestDemoConfig() {
-        super();
-    }
-
-    // API
-
-    @Override
-    public void addViewControllers(final ViewControllerRegistry registry) {
-        registry.addViewController("/sample.html");
-    }
-
-    @Bean
-    public ViewResolver viewResolver() {
-        final InternalResourceViewResolver bean = new InternalResourceViewResolver();
-
-        bean.setViewClass(JstlView.class);
-        bean.setPrefix("/WEB-INF/view/");
-        bean.setSuffix(".jsp");
-
-        return bean;
-    }
 }

spring-core-2/src/main/java/org/baeldung/cachedrequest/Person.java

@@ -7,6 +7,9 @@ public class Person {
 
     private int age;
 
+    public Person() {
+    }
+
     public Person(String firstName, String lastName, int age) {
         this.firstName = firstName;
         this.lastName = lastName;

spring-core-2/src/main/java/org/baeldung/cachedrequest/PrintRequestContentFilter.java

@@ -1,10 +1,12 @@
 package org.baeldung.cachedrequest;
 
+
 import java.io.IOException;
 import java.io.InputStream;
 
 import javax.servlet.FilterChain;
 import javax.servlet.ServletException;
+import javax.servlet.annotation.WebFilter;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
@@ -16,12 +18,14 @@
 
 @Order(Ordered.LOWEST_PRECEDENCE)
 @Component
+@WebFilter(filterName = "printRequestContentFilter", urlPatterns = "/*")
 public class PrintRequestContentFilter extends OncePerRequestFilter {
     @Override
     protected void doFilterInternal(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, FilterChain filterChain) throws ServletException, IOException {
+        System.out.println("IN  PrintRequestContentFilter ");
         InputStream inputStream = httpServletRequest.getInputStream();
         byte[] body = StreamUtils.copyToByteArray(inputStream);
-        System.out.println("In PrintRequestContentFilter." + " Request body is: " + new String(body));
+        System.out.println("In PrintRequestContentFilter. Request body is: " + new String(body));
         filterChain.doFilter(httpServletRequest, httpServletResponse);
     }
 }