具有多部分请求的android rest模板

案例1：发送实体类作为请求[工作]

案例2：按请求发送图像（多部分）[工作]

案例3：发送实体+图像[不工作]

案例1:

@RequestMapping(value = "/add", method = RequestMethod.POST)
public @ResponseBody String add(@RequestBody SampleEntity sampleEntity) {
    return "From Server: " + sampleEntity.getId();
}

@RequestMapping(value = "/imagepart", method = RequestMethod.POST)
public @ResponseBody String imagePart(@RequestPart("image") MultipartFile file) {
    return "From Server(ImagePart): " + file.getOriginalFilename();
}

@RequestMapping(value = "/addimagepart", method = RequestMethod.POST)
public @ResponseBody String addPart(
        @RequestPart("sampleEntity") SampleEntity sampleEntity,
        @RequestPart("image") MultipartFile file) {

    return "From Server(Part) : " + sampleEntity.getId() + " "
            + file.getOriginalFilename();

}

测试用例1

输出：来自服务器：123

案例2:

@RequestMapping(value = "/add", method = RequestMethod.POST)
public @ResponseBody String add(@RequestBody SampleEntity sampleEntity) {
    return "From Server: " + sampleEntity.getId();
}

@RequestMapping(value = "/imagepart", method = RequestMethod.POST)
public @ResponseBody String imagePart(@RequestPart("image") MultipartFile file) {
    return "From Server(ImagePart): " + file.getOriginalFilename();
}

@RequestMapping(value = "/addimagepart", method = RequestMethod.POST)
public @ResponseBody String addPart(
        @RequestPart("sampleEntity") SampleEntity sampleEntity,
        @RequestPart("image") MultipartFile file) {

    return "From Server(Part) : " + sampleEntity.getId() + " "
            + file.getOriginalFilename();

}

测试用例2

测试用例3

错误：此案例失败（图像不工作的实体类）

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如何从android rest模板向spring mvc服务器发出请求实体+多部分请求在案例3中，

FormHttpMessageConverter

用于转换

多值映射

对象以发送HTTP请求。不幸的是，默认FormHttpMessageConverter不支持将实体转换为JSON。因此，您必须手动将一些JSON转换器（例如，

MappingJackson2HttpMessageConverter

）添加到

FormHttpMessageConverter

。请尝试使用以下代码：

FormHttpMessageConverter converter = new FormHttpMessageConverter();
converter.addPartConverter(new MappingJackson2HttpMessageConverter());
restTemplate.getMessageConverters().add(0, converter);

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从请求对象获取多部分数据，而不是多部分文件注释

if (request instanceof MultipartHttpServletRequest) {
            MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;

            Set set = multipartRequest.getFileMap().entrySet();
            Iterator i = set.iterator();
            while (i.hasNext()) {
                Map.Entry me = (Map.Entry) i.next();
                System.out.println("key :" + me.getKey() + "-"
                        + me.getKey().getClass() + "|||||" + "value :"
                        + me.getValue() + "-" + me.getValue().getClass());
                switch ((String) me.getKey()) {
                case "staffPhoto": {
                    System.out.println("case staffImage "
                            + ((MultipartFile) me.getValue())
                                    .getOriginalFilename());
                    // processImage
                    break;
                }
}

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你解决这个问题了吗？我和你面临着同样的问题。。请分享你的发现