JAVA-10377 Moved code for spring-response-header article to spring-rest-http

2022-03-23 08:33:59 +05:30
parent 0776871206
commit ec6ff84766
7 changed files with 3 additions and 5 deletions
@@ -0,0 +1,14 @@
+package com.baeldung.responseheaders;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.web.servlet.ServletComponentScan;
+
+@ServletComponentScan
+@SpringBootApplication
+public class ResponseHeadersApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(ResponseHeadersApplication.class, args);
+    }
+}
@@ -0,0 +1,24 @@
+package com.baeldung.responseheaders.controllers;
+
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/filter-response-header")
+public class FilterResponseHeaderController {
+
+    @GetMapping("/no-extra-header")
+    public String FilterHeaderResponseWithNoExtraHeader() {
+        return "Response body with Filter header and no extra header";
+    }
+
+    @GetMapping("/extra-header")
+    public String FilterHeaderResponseWithExtraHeader(HttpServletResponse response) {
+        response.addHeader("Baeldung-Example-Header", "Value-ExtraHeader");
+        return "Response body with Filter header and one extra header";
+    }
+
+}
@@ -0,0 +1,70 @@
+package com.baeldung.responseheaders.controllers;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/single-response-header")
+public class ResponseHeaderController {
+
+    @GetMapping("/http-servlet-response")
+    public String usingHttpServletResponse(HttpServletResponse response) {
+        response.addHeader("Baeldung-Example-Header", "Value-HttpServletResponse");
+        return "Response with header using HttpServletResponse";
+    }
+
+    @GetMapping("/response-entity-constructor")
+    public ResponseEntity<String> usingResponseEntityConstructor() {
+        HttpHeaders responseHeaders = new HttpHeaders();
+        responseHeaders.set("Baeldung-Example-Header", "Value-ResponseEntityContructor");
+        String responseBody = "Response with header using ResponseEntity (constructor)";
+        HttpStatus responseStatus = HttpStatus.OK;
+
+        return new ResponseEntity<String>(responseBody, responseHeaders, responseStatus);
+    }
+
+    @GetMapping("/response-entity-contructor-multiple-headers")
+    public ResponseEntity<String> usingResponseEntityConstructorAndMultipleHeaders() {
+        List<MediaType> acceptableMediaTypes = new ArrayList<>(Arrays.asList(MediaType.APPLICATION_JSON));
+        HttpHeaders responseHeaders = new HttpHeaders();
+        responseHeaders.set("Baeldung-Example-Header", "Value-ResponseEntityConstructorAndHeaders");
+        responseHeaders.setAccept(acceptableMediaTypes);
+        String responseBody = "Response with header using ResponseEntity (constructor)";
+        HttpStatus responseStatus = HttpStatus.OK;
+
+        return new ResponseEntity<String>(responseBody, responseHeaders, responseStatus);
+    }
+
+    @GetMapping("/response-entity-builder")
+    public ResponseEntity<String> usingResponseEntityBuilder() {
+        String responseHeaderKey = "Baeldung-Example-Header";
+        String responseHeaderValue = "Value-ResponseEntityBuilder";
+        String responseBody = "Response with header using ResponseEntity (builder)";
+
+        return ResponseEntity.ok()
+            .header(responseHeaderKey, responseHeaderValue)
+            .body(responseBody);
+    }
+
+    @GetMapping("/response-entity-builder-with-http-headers")
+    public ResponseEntity<String> usingResponseEntityBuilderAndHttpHeaders() {
+        HttpHeaders responseHeaders = new HttpHeaders();
+        responseHeaders.set("Baeldung-Example-Header", "Value-ResponseEntityBuilderWithHttpHeaders");
+        String responseBody = "Response with header using ResponseEntity (builder)";
+
+        return ResponseEntity.ok()
+            .headers(responseHeaders)
+            .body(responseBody);
+    }
+}
@@ -0,0 +1,41 @@
+package com.baeldung.responseheaders.filter;
+
+import java.io.IOException;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.annotation.WebFilter;
+import javax.servlet.http.HttpServletResponse;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@WebFilter("/filter-response-header/*")
+public class AddResponseHeaderFilter implements Filter {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(AddResponseHeaderFilter.class);
+
+    @Override
+    public void init(FilterConfig filterConfig) throws ServletException {
+        // add special initialization requirements here
+        LOGGER.trace("Initializing filter...");
+    }
+
+    @Override
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
+        HttpServletResponse httpServletResponse = (HttpServletResponse) response;
+        httpServletResponse.setHeader("Baeldung-Example-Filter-Header", "Value-Filter");
+        chain.doFilter(request, response);
+    }
+
+    @Override
+    public void destroy() {
+        // clean up any resource being held by the filter here
+        LOGGER.trace("Destroying filter...");
+    }
+
+}