SpringBoot @PostMapping接收HTTP请求的流数据问题
作者：lookbbs
这篇文章主要介绍了SpringBoot @PostMapping接收HTTP请求的流数据问题，具有很好的参考价值，希望对大家有所帮助。如有错误或未考虑完全的地方，望不吝赐教
@PostMapping接收HTTP请求的流数据
@PostMapping("/test")
public String pushMessage(@RequestBody byte[] data) throws Exception {
String json = URLDecoder.decode(new String(data, DEFAULT_CHARSET), DEFAULT_CHARSET);
log.info(">>> 接收CP推送的消息：{}", json);
JSONObject jsonObject = JacksonUtils.jsonToBean(json, JSONObject.class);
System.out.println(jsonObject.get("key"));
return “success”
}Client 请求
try {
//创建连接
URL url = new URL(ADD_URL);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestMethod("POST");
connection.setUseCaches(false);
connection.setInstanceFollowRedirects(true);
//application/x-javascript
//text/xml->xml数据
//application/x-javascript->json对象
//application/x-www-form-urlencoded->表单数据
//application/json;charset=utf-8 -> json数据
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
connection.connect();
//POST请求
DataOutputStream out = new DataOutputStream(connection.getOutputStream());
JSONObject data = new JSONObject();
data.element("key", "这是一条测试数据");
out.writeBytes(data.toString());
out.flush();
out.close();
//读取响应
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String lines;
StringBuffer sb = new StringBuffer("");
while ((lines = reader.readLine()) != null) {
lines = new String(lines.getBytes(), "utf-8");
sb.append(lines);
}
System.out.println(sb);
reader.close();
// 断开连接
connection.disconnect();
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}关于@PostMapping注解解析
开发过程IDEA提示如将@RequestMapping(value="/abc" , method = “RequestMethod.POST”)替换成@PostMapping。现对@PostMapping的实现。
@PostMapping是一个复合注解，Spring framework 4.3引入了@RequestMapping注释的变体，以更好地表示带注释的方法的语义，作为@RequestMapping(method = RequestMethod.POST)的快捷方式。
也就是可以简化成@PostMapping(value="/abc" )即可，主要是方便识记。
下面很多方法都是对应着@RequestMapping的标记的别名。
@RequestMapping(value = “”, path = “”, params = “”, headers = “”,consumes = “”, produces = “”)
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@RequestMapping(method = RequestMethod.POST)
public @interface PostMapping {
/**
* RequestMapping 的别名，
*/
@AliasFor(annotation = RequestMapping.class)
String name() default "";
/**
*RequestMapping#value的别名， 默认为空字符串，一般需要自己填写
*/
@AliasFor(annotation = RequestMapping.class)
String[] value() default {};
/**
* RequestMapping#path的别名
*/
@AliasFor(annotation = RequestMapping.class)
String[] path() default {};
/**
* RequestMapping#params的别名
*/
@AliasFor(annotation = RequestMapping.class)
String[] params() default {};
/**
* RequestMapping#headers的别名
*/
@AliasFor(annotation = RequestMapping.class)
String[] headers() default {};
/**
* RequestMapping#consumes的别名
*/
@AliasFor(annotation = RequestMapping.class)
String[] consumes() default {};
/**
* RequestMapping#produces的别名
*/
@AliasFor(annotation = RequestMapping.class)
String[] produces() default {};
}
其他变体如下：
@GetMapping、@PutMapping、@PatchMapping和@DeleteMapping，与@PostMapping实现类似
总结
以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。