Workaround for spring-attic/spring-social-twitter#125

backend/build.gradle

@@ -48,7 +48,7 @@ dependencies {
     compile "org.springframework.boot:spring-boot-starter-data-jpa"
     compile "org.springframework.boot:spring-boot-starter-web"
     providedRuntime "org.springframework.boot:spring-boot-starter-tomcat"
-    compile "org.springframework.social:spring-social-twitter:1.1.0.RELEASE"
+    compile "org.springframework.social:spring-social-twitter:2.0.0.M4"
     compile "org.springframework.cloud:spring-cloud-gcp-starter-storage:1.0.0.M2"
     compile "io.sentry:sentry-logback:1.7.1"
     compile "com.fasterxml.jackson.module:jackson-module-kotlin"

backend/src/main/kotlin/net/animeta/backend/Application.kt

@@ -8,6 +8,7 @@ import net.animeta.backend.security.CurrentUserArgumentResolver
 import net.animeta.backend.serializer.PostSerializer
 import net.animeta.backend.serializer.RecordSerializer
 import net.animeta.backend.serializer.UserSerializer
+import net.animeta.backend.social.TwitterServiceProvider2
 import org.slf4j.LoggerFactory
 import org.springframework.beans.factory.annotation.Value
 import org.springframework.boot.SpringApplication
@@ -48,7 +49,7 @@ class Application : SpringBootServletInitializer() {
     @Bean
     fun twitterServiceProvider(@Value("\${spring.social.twitter.app-id}") appId: String,
                                @Value("\${spring.social.twitter.app-secret}") appSecret: String): TwitterServiceProvider {
-        return TwitterServiceProvider(appId, appSecret)
+        return TwitterServiceProvider2(appId, appSecret)
     }
 
     @Bean

backend/src/main/kotlin/net/animeta/backend/social/TwitterServiceProvider2.kt

@@ -0,0 +1,12 @@
+package net.animeta.backend.social
+
+import org.springframework.social.twitter.api.Twitter
+import org.springframework.social.twitter.connect.TwitterServiceProvider
+
+class TwitterServiceProvider2(consumerKey: String, consumerSecret: String) : TwitterServiceProvider(consumerKey, consumerSecret) {
+
+    override fun getApi(accessToken: String, secret: String): Twitter {
+        return TwitterTemplate2(consumerKey, consumerSecret, accessToken, secret)
+    }
+
+}

backend/src/main/kotlin/net/animeta/backend/social/TwitterTemplate2.kt

@@ -0,0 +1,16 @@
+package net.animeta.backend.social
+
+import org.springframework.http.MediaType
+import org.springframework.http.client.ClientHttpRequestInterceptor
+import org.springframework.social.twitter.api.impl.TwitterTemplate
+import org.springframework.web.client.RestTemplate
+
+class TwitterTemplate2(a: String, b: String, c: String, d: String) : TwitterTemplate(a, b, c, d) {
+    override fun configureRestTemplate(restTemplate: RestTemplate) {
+        super.configureRestTemplate(restTemplate)
+        restTemplate.interceptors.add(0, ClientHttpRequestInterceptor { request, body, execution ->
+            request.headers.contentType = MediaType.APPLICATION_FORM_URLENCODED
+            execution.execute(request, body)
+        })
+    }
+}