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thangpt2019thangpt2019
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post with Retrofit 2
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‎retrofit2-post-examples/pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.howtoprogram</groupId>
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<artifactId>retrofit2-post-examples</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<packaging>jar</packaging>
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<name>retrofit2-post-examples</name>
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<url>http://howtoprogram.xyz/2017/02/16/how-to-post-with-retrofit-2/</url>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.8</maven.compiler.source>
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<maven.compiler.target>1.8</maven.compiler.target>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.squareup.retrofit2</groupId>
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<artifactId>retrofit</artifactId>
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<version>2.1.0</version>
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</dependency>
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<dependency>
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<groupId>com.squareup.retrofit2</groupId>
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<artifactId>converter-gson</artifactId>
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<version>2.1.0</version>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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</dependency>
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</dependencies>
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</project>

‎retrofit2-post-examples/src/main/java/com/howtoprogram/retrofit2/Book.java‎

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package com.howtoprogram.retrofit2;
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import javax.xml.bind.annotation.XmlRootElement;
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public class Book {
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private Long id;
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private String name;
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private String author;
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public Book() {
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}
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// getter and sett
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public Book(Long id, String name, String author) {
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super();
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this.id = id;
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this.name = name;
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this.author = author;
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}
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/**
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* @return the id
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*/
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public Long getId() {
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return id;
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}
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/**
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* @param id the id to set
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*/
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public void setId(Long id) {
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this.id = id;
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}
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/**
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* @return the name
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*/
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public String getName() {
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return name;
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}
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/**
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* @param name the name to set
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*/
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public void setName(String name) {
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this.name = name;
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}
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/**
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* @return the author
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*/
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public String getAuthor() {
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return author;
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}
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/**
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* @param author the author to set
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*/
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public void setAuthor(String author) {
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this.author = author;
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}
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/*
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* (non-Javadoc)
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*
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* @see java.lang.Object#toString()
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*/
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@Override
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public String toString() {
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return "Book [id=" + id + ", name=" + name + ", author=" + author + "]";
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}
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}

‎retrofit2-post-examples/src/test/java/com/howtoprogram/retrofit2/BookResourceRetrofit2.java‎

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package com.howtoprogram.retrofit2;
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import okhttp3.MultipartBody;
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import okhttp3.RequestBody;
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import okhttp3.ResponseBody;
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import retrofit2.Call;
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import retrofit2.Callback;
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import retrofit2.http.*;
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import java.util.Map;
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public interface BookResourceRetrofit2 {
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@FormUrlEncoded
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@POST("post")
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Call<Book> updateBook(@FieldMap Map<String, String> fieldsMap);
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@Multipart
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@POST("post")
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Call<Book> addBookCover(@Part("id") RequestBody id, @Part MultipartBody.Part photo);
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@POST("post")
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Call<Book> addBook(@Body Book book);
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@FormUrlEncoded
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@POST("post")
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Call<Book> updateBook(@Field("id") Long id, @Field("author") String first,
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@Field("name") String name);
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@Multipart
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@POST("post")
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Call<Book> addBookCover2(@Part("id") RequestBody id, @Part("photo") RequestBody photo);
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}

‎retrofit2-post-examples/src/test/java/com/howtoprogram/retrofit2/Retrofit2Test.java‎

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package com.howtoprogram.retrofit2;
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import okhttp3.MediaType;
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import okhttp3.MultipartBody;
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import okhttp3.RequestBody;
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import org.junit.Test;
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import retrofit2.Call;
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import retrofit2.Response;
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import retrofit2.Retrofit;
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import retrofit2.converter.gson.GsonConverterFactory;
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import java.io.File;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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import static org.junit.Assert.assertTrue;
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public class Retrofit2Test {
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@Test
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public void testPostObject() throws IOException {
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Retrofit retrofit = new Retrofit.Builder()
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.baseUrl("http://httpbin.org/")
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.addConverterFactory(GsonConverterFactory.create())
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.build();
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BookResourceRetrofit2 bookResource = retrofit.create(BookResourceRetrofit2.class);
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Book book = new Book(1l, "Java How To Program", "Paul Deitel");
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Call<Book> call = bookResource.addBook(book);
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Response<Book> response = call.execute();
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assertTrue(response.isSuccessful());
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}
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@Test
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public void testPostJson() throws IOException {
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Retrofit retrofit = new Retrofit.Builder()
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.baseUrl("http://httpbin.org/")
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.addConverterFactory(GsonConverterFactory.create())
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.build();
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BookResourceRetrofit2 bookResource = retrofit.create(BookResourceRetrofit2.class);
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Book book = new Book(1l, "Java How To Program", "Paul Deitel");
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Call<Book> call = bookResource.addBook(book);
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Response<Book> response = call.execute();
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assertTrue(response.isSuccessful());
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}
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@Test
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public void testPostForm() throws IOException {
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Retrofit retrofit = new Retrofit.Builder()
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.baseUrl("http://httpbin.org/")
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.addConverterFactory(GsonConverterFactory.create())
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.build();
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BookResourceRetrofit2 service = retrofit.create(BookResourceRetrofit2.class);
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Call<Book> call = service.updateBook(1l, "Tom1", "Riddle1");
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Response<Book> response = call.execute();
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assertTrue(response.isSuccessful());
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}
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@Test
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public void testPostFormWithFieldMap() throws IOException {
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Retrofit retrofit = new Retrofit.Builder()
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.baseUrl("http://httpbin.org/")
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.addConverterFactory(GsonConverterFactory.create())
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.build();
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BookResourceRetrofit2 service = retrofit.create(BookResourceRetrofit2.class);
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Map<String, String> fieldsMap = new HashMap<>();
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fieldsMap.put("author","Joshua Bloch");
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fieldsMap.put("name","Java puzzlers");
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fieldsMap.put("id","1");
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Call<Book> call = service.updateBook(fieldsMap);
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Response<Book> response = call.execute();
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assertTrue(response.isSuccessful());
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}
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@Test
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public void testPostMultipart() throws IOException {
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Retrofit retrofit = new Retrofit.Builder()
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.baseUrl("http://httpbin.org/")
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.addConverterFactory(GsonConverterFactory.create())
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.build();
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BookResourceRetrofit2 service = retrofit.create(BookResourceRetrofit2.class);
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// create RequestBody instance from file
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ClassLoader classLoader = getClass().getClassLoader();
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File file = new File(classLoader.getResource("RestImage.png").getFile());
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RequestBody reqFile = RequestBody.create(MediaType.parse("multipart/form-data"), file);
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// MultipartBody.Part is used to send also the actual file name
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MultipartBody.Part body =
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MultipartBody.Part.createFormData("file", file.getName(), reqFile);
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// add book id part within the multipart request
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RequestBody id = RequestBody.create(MediaType.parse("text/plain"), String.valueOf(1l));
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Call<Book> call = service.addBookCover(id, body);
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Response<Book> response = call.execute();
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assertTrue(response.isSuccessful());
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}
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@Test
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public void testPostMultipart2() throws IOException {
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Retrofit retrofit = new Retrofit.Builder()
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.baseUrl("http://httpbin.org/")
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.addConverterFactory(GsonConverterFactory.create())
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.build();
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BookResourceRetrofit2 service = retrofit.create(BookResourceRetrofit2.class);
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// create RequestBody instance from file
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ClassLoader classLoader = getClass().getClassLoader();
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File file = new File(classLoader.getResource("RestImage.png").getFile());
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RequestBody reqFile = RequestBody.create(MediaType.parse("multipart/form-data"), file);
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RequestBody id = RequestBody.create(MediaType.parse("text/plain"), String.valueOf(1l));
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Call<Book> call = service.addBookCover2(id, reqFile);
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Response<Book> response = call.execute();
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assertTrue(response.isSuccessful());
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}
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}

‎retrofit2-post-examples/src/test/resources/RestImage.png‎

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