SpringMVC——返回JSON數據&&文件上傳下載

時間 2019-11-11

標籤 springmvc 返回 json 數據文件上傳下載欄目 Spring 简体版

原文原文鏈接

--------------------------------------------返回JSON數據------------------------------------------------------------------session

@Controllerapp

public class PersonHandler {jsp

@ResponseBodypost

@RequestMapping("/getPerson")spa

public List<Person> getPersons() {orm

List<Person> list = new ArrayList<Person>();ip

list.add(new Person(1, "a", "aa", 1, new Date()));get

list.add(new Person(2, "b", "ba", 2, new Date()));input

list.add(new Person(3, "c", "ca", 3, new Date()));servlet

list.add(new Person(4, "d", "da", 4, new Date()));

list.add(new Person(5, "e", "ea", 5, new Date()));

return list;

}

----------------------------------------------------------文件上傳下載--------------------------------------------------

/**

* 文件下載

@RequestMapping("testResponseEntity")

public ResponseEntity<byte[]> testResponseEntity(HttpSession session) throws IOException {

byte[] body = null;

ServletContext servletContext = session.getServletContext();

InputStream in = servletContext.getResourceAsStream("/file/test.txt");

body = new byte[in.available()];

in.read(body);

HttpHeaders headers = new HttpHeaders();

headers.add("Content-Disponsition", "attachment;filename=chao.txt");

HttpStatus statusCode = HttpStatus.OK;

ResponseEntity<byte[]> response = new ResponseEntity<byte[]>(body, headers, statusCode);

return response;

}

/**

* 文件上傳

@ResponseBody

@RequestMapping("/testHttpMessageConverter")

public String testHttpMessageConverter(@RequestBody String body) {

System.out.println(body);

return "***********************" + new Date();

}

---------------------------------------------------------index.jsp---------------------------------------------------------------------------

<body>

<a href="getPerson">getPerson</a>

<a href="testResponseEntity">test ResponseEntity</a>

file:<input type="file" name="file"/>

Desc:<input type="text" name="desc"/>

</form>

</body>

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