From b119316bf4705f97a68c93bc46406970ec24797b Mon Sep 17 00:00:00 2001
From: Tapan Avasthi <tapan.k.avasthi@gmail.com>
Date: Sun, 2 Jul 2023 21:17:44 +0530
Subject: [PATCH] BAEL-6647: How to handle character encoding in JSON POST
 Request (#14335)

Co-authored-by: Tapan Avasthi <tavasthi@Tapans-MacBook-Air.local>
---
 .../resttemplate/RestTemplateApplication.java | 16 +++++
 ...stTemplatePostRequestEncodingLiveTest.java | 59 +++++++++++++++++++
 2 files changed, 75 insertions(+)
 create mode 100644 spring-web-modules/spring-resttemplate-2/src/main/java/com/baeldung/resttemplate/RestTemplateApplication.java
 create mode 100644 spring-web-modules/spring-resttemplate-2/src/test/java/com/baeldung/resttemplate/postjson/RestTemplatePostRequestEncodingLiveTest.java

diff --git a/spring-web-modules/spring-resttemplate-2/src/main/java/com/baeldung/resttemplate/RestTemplateApplication.java b/spring-web-modules/spring-resttemplate-2/src/main/java/com/baeldung/resttemplate/RestTemplateApplication.java
new file mode 100644
index 0000000000..ca1e141d44
--- /dev/null
+++ b/spring-web-modules/spring-resttemplate-2/src/main/java/com/baeldung/resttemplate/RestTemplateApplication.java
@@ -0,0 +1,16 @@
+package com.baeldung.resttemplate;
+
+import java.util.Collections;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class RestTemplateApplication {
+
+    public static void main(String[] args) {
+        SpringApplication app = new SpringApplication(RestTemplateApplication.class);
+        app.setDefaultProperties(Collections.singletonMap("server.servlet.encoding.charset", "ISO-8859-1"));
+        app.run(args);
+    }
+}
diff --git a/spring-web-modules/spring-resttemplate-2/src/test/java/com/baeldung/resttemplate/postjson/RestTemplatePostRequestEncodingLiveTest.java b/spring-web-modules/spring-resttemplate-2/src/test/java/com/baeldung/resttemplate/postjson/RestTemplatePostRequestEncodingLiveTest.java
new file mode 100644
index 0000000000..803ab96ba4
--- /dev/null
+++ b/spring-web-modules/spring-resttemplate-2/src/test/java/com/baeldung/resttemplate/postjson/RestTemplatePostRequestEncodingLiveTest.java
@@ -0,0 +1,59 @@
+package com.baeldung.resttemplate.postjson;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotNull;
+
+import org.json.JSONException;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.web.client.RestTemplate;
+
+import com.baeldung.resttemplate.RestTemplateApplication;
+import com.baeldung.resttemplate.web.dto.Person;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = RestTemplateApplication.class)
+public class RestTemplatePostRequestEncodingLiveTest {
+    private static String createPersonUrl;
+    private static RestTemplate restTemplate;
+
+    @BeforeClass
+    public static void runBeforeAllTestMethods() throws JSONException {
+        createPersonUrl = "http://localhost:8080/spring-rest/createPerson";
+        restTemplate = new RestTemplate();
+    }
+
+    @Test
+    public void givenJapaneseNameInDataWithoutHeaderEncoding_whenDataIsPostedByPostForObject_thenSaveIncorrectly() {
+        Person japanese = new Person(100, "関連当");
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_JSON);
+        HttpEntity<Person> request = new HttpEntity<>(japanese, headers);
+
+        Person person = restTemplate.postForObject(createPersonUrl, request, Person.class);
+        assertNotNull(person);
+        assertNotEquals("関連当", person.getName());
+    }
+
+    @Test
+    public void givenJapaneseNameInDataWithHeaderEncoding_whenDataIsPostedByPostForObject_thenSaveCorrectly() {
+        Person japanese = new Person(100, "関連当");
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.set("Content-type", "application/json;charset=UTF-8");
+        HttpEntity<Person> request = new HttpEntity<>(japanese, headers);
+
+        Person person = restTemplate.postForObject(createPersonUrl, request, Person.class);
+        assertNotNull(person);
+        assertEquals("関連当", person.getName());
+    }
+}
\ No newline at end of file