Question

我有下一个问题 - 每张图片发送请求：

<img src="getImage/9.jpg"/>

Spring MVC Controller：

    @Secured( "ROLE_ADMIN")
    @RequestMapping(value = "/getImage/{img_name:.+}")
    public byte[] getImage(@PathVariable String img_name)  {

        byte[] data;

        try {
            String realpath = "D:\\Project\\images\\" + img_name;
            Path path = Paths.get(realpath);
            data = Files.readAllBytes(path)


        }catch (IOException e){
            data = null;
        }

        return data;
    }

在浏览器方面，我收到了下一个错误：

406 Not Acceptable

这种问题可能是什么原因？我应该从服务器端发送什么数据才能使<img src="getImage/9.jpg"?>正常工作。

Answer 1

请将此代码添加到spring-context.xml文件中，该文件注册了ByteArrayHttpMessageConverter

<mvc:annotation-driven> <mvc:message-converters> <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>image/jpeg</value> <value>image/png</value> </list> </property> </bean> </mvc:message-converters> </mvc:annotation-driven

，班级应为

 @Secured( "ROLE_ADMIN")
@RequestMapping(value = "/getImage/{img_name:.+}")
public  ResponseEntity<byte[]> getImage(@PathVariable String img_name)
        throws InternalServerError {

    byte[] data;
    try {
        String realpath = "D:\\Project\\images\\" + img_name;
        Path path = Paths.get(realpath);
        data = Files.readAllBytes(path)


    }catch (IOException e){
        data = null;
    }

    final HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.IMAGE_JPEG);
    return new ResponseEntity<byte[]>(data , headers, HttpStatus.OK);
}

JAVA Spring返回图像字节 - 错误406不可接受

1 个答案: