Java 类retrofit2.http.Multipart 实例源码

项目：GitHub 文件：RequestBuilderTest.java

@Test public void onlyOneEncodingIsAllowedMultipartFirst() {
  class Example {
    @Multipart //
    @FormUrlEncoded //
    @POST("/") //
    Call<ResponseBody> method() {
      return null;
    }
  }
  try {
    buildRequest(Example.class);
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "Only one encoding annotation is allowed.\n    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void onlyOneEncodingIsAllowedFormEncodingFirst() {
  class Example {
    @FormUrlEncoded //
    @Multipart //
    @POST("/") //
    Call<ResponseBody> method() {
      return null;
    }
  }
  try {
    buildRequest(Example.class);
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "Only one encoding annotation is allowed.\n    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartFailsOnNonBodyMethod() {
  class Example {
    @Multipart //
    @GET("/") //
    Call<ResponseBody> method() {
      return null;
    }
  }
  try {
    buildRequest(Example.class);
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "Multipart can only be specified on HTTP methods with request body (e.g., @POST).\n    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartFailsWithNoParts() {
  class Example {
    @Multipart //
    @POST("/") //
    Call<ResponseBody> method() {
      return null;
    }
  }
  try {
    buildRequest(Example.class);
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "Multipart method must contain at least one @Part.\n    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartIterableRequiresName() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part List<RequestBody> part) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@Part annotation must supply a name or use MultipartBody.Part parameter type. (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartArrayRequiresName() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part RequestBody[] part) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@Part annotation must supply a name or use MultipartBody.Part parameter type. (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartOkHttpPartForbidsName() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part("name") MultipartBody.Part part) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@Part parameters using the MultipartBody.Part must not include a part name in the annotation. (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartIterableOkHttpPart() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part("ping") List<MultipartBody.Part> part) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@Part parameters using the MultipartBody.Part must not include a part name in the annotation. (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartArrayOkHttpPart() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part("ping") MultipartBody.Part[] part) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@Part parameters using the MultipartBody.Part must not include a part name in the annotation. (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartMapRejectsOkHttpPartValues() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@PartMap Map<String, MultipartBody.Part> parts) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@PartMap values cannot be MultipartBody.Part. Use @Part List<Part> or a different value type instead. (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartMapRejectsNull() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@PartMap Map<String, RequestBody> parts) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage("Part map was null.");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartMapRejectsNullValues() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@PartMap Map<String, RequestBody> parts) {
      return null;
    }
  }

  Map<String, RequestBody> params = new LinkedHashMap<>();
  params.put("ping", RequestBody.create(null, "pong"));
  params.put("kit", null);

  try {
    buildRequest(Example.class, params);
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage("Part map contained null value for key 'kit'.");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartMapMustBeMap() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@PartMap List<Object> parts) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, Collections.emptyList());
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@PartMap parameter type must be Map. (parameter #1)\n    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartNullRemovesPart() throws IOException {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part("ping") String ping, @Part("fizz") String fizz) {
      return null;
    }
  }
  Request request = buildRequest(Example.class, "pong", null);
  assertThat(request.method()).isEqualTo("POST");
  assertThat(request.headers().size()).isZero();
  assertThat(request.url().toString()).isEqualTo("http://example.com/foo/bar/");

  RequestBody body = request.body();
  Buffer buffer = new Buffer();
  body.writeTo(buffer);
  String bodyString = buffer.readUtf8();

  assertThat(bodyString)
      .contains("Content-Disposition: form-data;")
      .contains("name=\"ping\"")
      .contains("\r\npong\r\n--");
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartsShouldBeInOrder() throws IOException {
  class Example {
    @Multipart
    @POST("/foo")
    Call<ResponseBody> get(@Part("first") String data, @Part("second") String dataTwo, @Part("third") String dataThree) {
      return null;
    }
  }
  Request request = buildRequest(Example.class, "firstParam", "secondParam", "thirdParam");
  MultipartBody body = (MultipartBody) request.body();

  Buffer buffer = new Buffer();
  body.writeTo(buffer);
  String readBody = buffer.readUtf8();

  assertThat(readBody.indexOf("firstParam")).isLessThan(readBody.indexOf("secondParam"));
  assertThat(readBody.indexOf("secondParam")).isLessThan(readBody.indexOf("thirdParam"));
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void onlyOneEncodingIsAllowedFormEncodingFirst() {
  class Example {
    @FormUrlEncoded //
    @Multipart //
    @POST("/") //
    Call<ResponseBody> method() {
      return null;
    }
  }
  try {
    buildRequest(Example.class);
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "Only one encoding annotation is allowed.\n    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartFailsOnNonBodyMethod() {
  class Example {
    @Multipart //
    @GET("/") //
    Call<ResponseBody> method() {
      return null;
    }
  }
  try {
    buildRequest(Example.class);
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "Multipart can only be specified on HTTP methods with request body (e.g., @POST).\n    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartFailsWithNoParts() {
  class Example {
    @Multipart //
    @POST("/") //
    Call<ResponseBody> method() {
      return null;
    }
  }
  try {
    buildRequest(Example.class);
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "Multipart method must contain at least one @Part.\n    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartIterableRequiresName() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part List<RequestBody> part) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@Part annotation must supply a name or use MultipartBody.Part parameter type. (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartArrayRequiresName() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part RequestBody[] part) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@Part annotation must supply a name or use MultipartBody.Part parameter type. (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartOkHttpPartForbidsName() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part("name") MultipartBody.Part part) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@Part parameters using the MultipartBody.Part must not include a part name in the annotation. (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartIterableOkHttpPart() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part("ping") List<MultipartBody.Part> part) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@Part parameters using the MultipartBody.Part must not include a part name in the annotation. (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartArrayOkHttpPart() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part("ping") MultipartBody.Part[] part) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@Part parameters using the MultipartBody.Part must not include a part name in the annotation. (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartMapRejectsNonStringKeys() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@PartMap Map<Object, RequestBody> parts) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@PartMap keys must be of type String: class java.lang.Object (parameter #1)\n"
            + "    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartMapRejectsNull() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@PartMap Map<String, RequestBody> parts) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage("Part map was null.");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartMapRejectsNullKeys() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@PartMap Map<String, RequestBody> parts) {
      return null;
    }
  }

  Map<String, RequestBody> params = new LinkedHashMap<>();
  params.put("ping", RequestBody.create(null, "pong"));
  params.put(null, RequestBody.create(null, "kat"));

  try {
    buildRequest(Example.class, params);
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage("Part map contained null key.");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartMapRejectsNullValues() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@PartMap Map<String, RequestBody> parts) {
      return null;
    }
  }

  Map<String, RequestBody> params = new LinkedHashMap<>();
  params.put("ping", RequestBody.create(null, "pong"));
  params.put("kit", null);

  try {
    buildRequest(Example.class, params);
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage("Part map contained null value for key 'kit'.");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartMapMustBeMap() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@PartMap List<Object> parts) {
      return null;
    }
  }

  try {
    buildRequest(Example.class, Collections.emptyList());
    fail();
  } catch (IllegalArgumentException e) {
    assertThat(e).hasMessage(
        "@PartMap parameter type must be Map. (parameter #1)\n    for method Example.method");
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartMapSupportsSubclasses() throws IOException {
  class Foo extends HashMap<String, String> {
  }

  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@PartMap Foo parts) {
      return null;
    }
  }

  Foo foo = new Foo();
  foo.put("hello", "world");

  Request request = buildRequest(Example.class, foo);
  Buffer buffer = new Buffer();
  request.body().writeTo(buffer);
  assertThat(buffer.readUtf8())
      .contains("name=\"hello\"")
      .contains("\r\n\r\nworld\r\n--");
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartNullRemovesPart() throws IOException {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part("ping") String ping, @Part("fizz") String fizz) {
      return null;
    }
  }
  Request request = buildRequest(Example.class, "pong", null);
  assertThat(request.method()).isEqualTo("POST");
  assertThat(request.headers().size()).isZero();
  assertThat(request.url().toString()).isEqualTo("http://example.com/foo/bar/");

  RequestBody body = request.body();
  Buffer buffer = new Buffer();
  body.writeTo(buffer);
  String bodyString = buffer.readUtf8();

  assertThat(bodyString)
      .contains("Content-Disposition: form-data;")
      .contains("name=\"ping\"")
      .contains("\r\npong\r\n--");
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartsShouldBeInOrder() throws IOException {
  class Example {
    @Multipart
    @POST("/foo")
    Call<ResponseBody> get(@Part("first") String data, @Part("second") String dataTwo, @Part("third") String dataThree) {
      return null;
    }
  }
  Request request = buildRequest(Example.class, "firstParam", "secondParam", "thirdParam");
  MultipartBody body = (MultipartBody) request.body();

  Buffer buffer = new Buffer();
  body.writeTo(buffer);
  String readBody = buffer.readUtf8();

  assertThat(readBody.indexOf("firstParam")).isLessThan(readBody.indexOf("secondParam"));
  assertThat(readBody.indexOf("secondParam")).isLessThan(readBody.indexOf("thirdParam"));
}

项目：retrofit-rxjava-request-with-progress 文件：Api.java

@Multipart
@POST("pictureup/uploadshitu")
Observable<ProgressBean<String>> uploadPic(
        @Part("pos") String pos,
        @Part("uptype") String uptype,
        @Part("fm") String index,
        @Part("image\"; filename=\"xxx.jpg") File image
);

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartIterable() throws IOException {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part("ping") List<String> ping) {
      return null;
    }
  }

  Request request = buildRequest(Example.class, Arrays.asList("pong1", "pong2"));
  assertThat(request.method()).isEqualTo("POST");
  assertThat(request.headers().size()).isZero();
  assertThat(request.url().toString()).isEqualTo("http://example.com/foo/bar/");

  RequestBody body = request.body();
  Buffer buffer = new Buffer();
  body.writeTo(buffer);
  String bodyString = buffer.readUtf8();

  assertThat(bodyString)
      .contains("Content-Disposition: form-data;")
      .contains("name=\"ping\"\r\n")
      .contains("\r\npong1\r\n--");

  assertThat(bodyString)
      .contains("Content-Disposition: form-data;")
      .contains("name=\"ping\"")
      .contains("\r\npong2\r\n--");
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartWithEncoding() throws IOException {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part(value = "ping", encoding = "8-bit") String ping,
        @Part(value = "kit", encoding = "7-bit") RequestBody kit) {
      return null;
    }
  }

  Request request = buildRequest(Example.class, "pong", RequestBody.create(
      MediaType.parse("text/plain"), "kat"));
  assertThat(request.method()).isEqualTo("POST");
  assertThat(request.headers().size()).isZero();
  assertThat(request.url().toString()).isEqualTo("http://example.com/foo/bar/");

  RequestBody body = request.body();
  Buffer buffer = new Buffer();
  body.writeTo(buffer);
  String bodyString = buffer.readUtf8();

  assertThat(bodyString)
      .contains("Content-Disposition: form-data;")
      .contains("name=\"ping\"\r\n")
      .contains("Content-Transfer-Encoding: 8-bit")
      .contains("\r\npong\r\n--");

  assertThat(bodyString)
      .contains("Content-Disposition: form-data;")
      .contains("name=\"kit\"")
      .contains("Content-Transfer-Encoding: 7-bit")
      .contains("\r\nkat\r\n--");
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartMapWithEncoding() throws IOException {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@PartMap(encoding = "8-bit") Map<String, RequestBody> parts) {
      return null;
    }
  }

  Map<String, RequestBody> params = new LinkedHashMap<>();
  params.put("ping", RequestBody.create(null, "pong"));
  params.put("kit", RequestBody.create(null, "kat"));

  Request request = buildRequest(Example.class, params);
  assertThat(request.method()).isEqualTo("POST");
  assertThat(request.headers().size()).isZero();
  assertThat(request.url().toString()).isEqualTo("http://example.com/foo/bar/");

  RequestBody body = request.body();
  Buffer buffer = new Buffer();
  body.writeTo(buffer);
  String bodyString = buffer.readUtf8();

  assertThat(bodyString)
      .contains("Content-Disposition: form-data;")
      .contains("name=\"ping\"\r\n")
      .contains("Content-Transfer-Encoding: 8-bit")
      .contains("\r\npong\r\n--");

  assertThat(bodyString)
      .contains("Content-Disposition: form-data;")
      .contains("name=\"kit\"")
      .contains("Content-Transfer-Encoding: 8-bit")
      .contains("\r\nkat\r\n--");
}

项目：Tribe 文件：ApiService.java

/**
 * 附近 模块 api
 */

//附近的人 改变在线状态
@Multipart
@POST("api.php?m=member&a=userStatus")
Observable<HttpResult<String>> setOnlineState(@Part("userid") String userid,
                                              @Part("type") String type);

项目：lecrec-android 文件：RecordService.java

@Multipart
@POST("records")
Call<Record> createRecord(
        @Header("Authorization") String token,
        @Part("title") String title,
        @Part("duration") String duration,
        @Part("filename") String filename,
        @Part("is_korean") Boolean isKorean,
        @Part("description") RequestBody description,
        @Part MultipartBody.Part file
);

项目：GitHub 文件：RequestBuilderTest.java

@Test public void multipartPartOptional() {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part("ping") RequestBody ping) {
      return null;
    }
  }
  try {
    buildRequest(Example.class, new Object[] { null });
    fail();
  } catch (IllegalStateException e) {
    assertThat(e.getMessage()).isEqualTo("Multipart body must have at least one part.");
  }
}

项目：GitHub 文件：ServiceMethod.java

private void parseMethodAnnotation(Annotation annotation) {
  if (annotation instanceof DELETE) {
    parseHttpMethodAndPath("DELETE", ((DELETE) annotation).value(), false);
  } else if (annotation instanceof GET) {
    parseHttpMethodAndPath("GET", ((GET) annotation).value(), false);
  } else if (annotation instanceof HEAD) {
    parseHttpMethodAndPath("HEAD", ((HEAD) annotation).value(), false);
    if (!Void.class.equals(responseType)) {
      throw methodError("HEAD method must use Void as response type.");
    }
  } else if (annotation instanceof PATCH) {
    parseHttpMethodAndPath("PATCH", ((PATCH) annotation).value(), true);
  } else if (annotation instanceof POST) {
    parseHttpMethodAndPath("POST", ((POST) annotation).value(), true);
  } else if (annotation instanceof PUT) {
    parseHttpMethodAndPath("PUT", ((PUT) annotation).value(), true);
  } else if (annotation instanceof OPTIONS) {
    parseHttpMethodAndPath("OPTIONS", ((OPTIONS) annotation).value(), false);
  } else if (annotation instanceof HTTP) {
    HTTP http = (HTTP) annotation;
    parseHttpMethodAndPath(http.method(), http.path(), http.hasBody());
  } else if (annotation instanceof retrofit2.http.Headers) {
    String[] headersToParse = ((retrofit2.http.Headers) annotation).value();
    if (headersToParse.length == 0) {
      throw methodError("@Headers annotation is empty.");
    }
    headers = parseHeaders(headersToParse);
  } else if (annotation instanceof Multipart) {
    if (isFormEncoded) {
      throw methodError("Only one encoding annotation is allowed.");
    }
    isMultipart = true;
  } else if (annotation instanceof FormUrlEncoded) {
    if (isMultipart) {
      throw methodError("Only one encoding annotation is allowed.");
    }
    isFormEncoded = true;
  }
}

项目：GitHub 文件：RequestBuilderTest.java

@Test public void simpleMultipart() throws IOException {
  class Example {
    @Multipart //
    @POST("/foo/bar/") //
    Call<ResponseBody> method(@Part("ping") String ping, @Part("kit") RequestBody kit) {
      return null;
    }
  }

  Request request = buildRequest(Example.class, "pong", RequestBody.create(
      MediaType.parse("text/plain"), "kat"));
  assertThat(request.method()).isEqualTo("POST");
  assertThat(request.headers().size()).isZero();
  assertThat(request.url().toString()).isEqualTo("http://example.com/foo/bar/");

  RequestBody body = request.body();
  Buffer buffer = new Buffer();
  body.writeTo(buffer);
  String bodyString = buffer.readUtf8();

  assertThat(bodyString)
      .contains("Content-Disposition: form-data;")
      .contains("name=\"ping\"\r\n")
      .contains("\r\npong\r\n--");

  assertThat(bodyString)
      .contains("Content-Disposition: form-data;")
      .contains("name=\"kit\"")
      .contains("\r\nkat\r\n--");
}