Question

通过提供的评论，我编写了三种不同的测试来验证正确设置的内容类型。

@Test
public void testGetImageJpg_ShouldSucceed() throws Exception {
    File testImage = new File(TestConstants.TEST_IMAGE_JPG);
    byte[] expectedBytes = IOUtils.toByteArray(new FileInputStream(testImage));
    when(service.getImage(anyString(), anyString())).thenReturn(testImage);
    mockMvc.perform(get("/getImage/id/bla.jpg").sessionAttrs(session))
            .andExpect(status().isOk()).andExpect(content().contentType(MediaType.IMAGE_JPEG))
            .andExpect(content().bytes(expectedBytes));

}

@Test
public void testGetImagePng_ShouldSucceed() throws Exception {
    File testImage = new File(TestConstants.TEST_IMAGE_PNG);
    byte[] expectedBytes = IOUtils.toByteArray(new FileInputStream(testImage));
    when(service.getImage(anyString(), anyString())).thenReturn(testImage);
    mockMvc.perform(get("/getImage/id/bla.png").sessionAttrs(session))
            .andExpect(status().isOk()).andExpect(content().contentType(MediaType.IMAGE_PNG))
            .andExpect(content().bytes(expectedBytes));

}

@Test
public void testGetImageGif_ShouldSucceed() throws Exception {
    File testImage = new File(TestConstants.TEST_IMAGE_GIF);
    byte[] expectedBytes = IOUtils.toByteArray(new FileInputStream(testImage));
    when(service.getImage(anyString(), anyString())).thenReturn(testImage);
    mockMvc.perform(get("/getImage/id/bla.gif").sessionAttrs(session))
            .andExpect(status().isOk()).andExpect(content().contentType(MediaType.IMAGE_GIF))
            .andExpect(content().bytes(expectedBytes));

}

这是我的控制器，所有测试都成功：

@RequestMapping(value="/getImage/{id}/{path}", produces = {"image/png","image/jpeg","image/gif"})
@ResponseBody
byte[] getImage(@PathVariable("id") String id,
        @PathVariable("path") String path) throws ImageNotFoundException {      
    File imageFile = service.getImage(id, path);
    InputStream in;        
    try {
        in = new FileInputStream(imageFile);
        return IOUtils.toByteArray(in);
    } catch (IOException e) {           
        throw new ImageNotFoundException();
    }
}

但是当我将生产值的顺序更改为

时

produces = {"image/jpeg","image/png","image/gif"}

png的测试失败了：

java.lang.AssertionError: Content type expected:<image/png> but was:<image/jpeg>

我很困惑，改变产品价值的顺序会导致不同的结果。

有没有人观察到这一点，这是一个错误还是我错过了什么？

@RequestMapping的产生对值的顺序敏感吗？

0 个答案: