spring开发restful接口，put方法错误

来源：互联网发布：欧美知乎编辑：程序博客网时间：2024/06/06 04:46

在用spring开发rest接口，表单提交用的put方式，content-type是application/x-www-form-urlencoded
代码如下

@RequiresPermissions("act:model:edit")@RequestMapping(value = "/act/service/model/{modelId}/save", method = RequestMethod.PUT)@ResponseStatus(value = HttpStatus.OK)public void saveModel(@PathVariable String modelId, @RequestBody MultiValueMap<String, String> values) {   try {      Model model = repositoryService.getModel(modelId);      ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model.getMetaInfo());@RequiresPermissions("act:model:edit")@RequestMapping(value = "/act/service/model/{modelId}/save", method = RequestMethod.POST)@ResponseStatus(value = HttpStatus.OK)public void saveModel(@PathVariable String modelId, @RequestBody MultiValueMap<String, String> values) {   try {      Model model = repositoryService.getModel(modelId);      ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model.getMetaInfo());

用restful client测试，一直报400，参数解析错误，跟踪代码到spring核心包，

HttpServletRequest servletRequest = (HttpServletRequest)webRequest.getNativeRequest(HttpServletRequest.class);ServletServerHttpRequest inputMessage = new ServletServerHttpRequest(servletRequest);InputStream inputStream = inputMessage.getBody();。。。final PushbackInputStream pushbackInputStream = new PushbackInputStream(inputStream);int b = pushbackInputStream.read();if(b == -1) {    return this.handleEmptyBody(methodParam);}

抛出了requestbody为空的异常。原因是在inputMessage.getBody()的时候就是错的

ServletServerHttpRequestpublic InputStream getBody() throws IOException {    return (InputStream)(isFormPost(this.servletRequest)?getBodyFromServletRequestParameters(this.servletRequest):this.servletRequest.getInputStream());}private static boolean isFormPost(HttpServletRequest request) {    String contentType = request.getContentType();    return contentType != null && contentType.contains("application/x-www-form-urlencoded") && "POST".equalsIgnoreCase(request.getMethod());}

分析可得：spring要求使用application/x-www-form-urlencoded方式提交的表单要用post方式

1 0