Value transfer between jsp page and background server under Spring MVC framework

(Notes of things I have done recently, I will add them later using other methods)

The first part opens a new page to load static data

1 Model Map

Controller:

	@RequestMapping(value = "show.do", method = RequestMethod.GET)
	public String show(HttpServletRequest request,HttpServletResponse response, ModelMap model) {
		//Call the addAttribute method of ModelMap
		return "";
	}

JSP:

	<c:forEach items="${requestScope.models}" var="model">
		<tr rowSelected()" onMouseOver="rowOver()" onMouseOut="rowRemove()">
			<td>${model.data}</td>
		</tr>
	</c:forEach>

The second part dynamically loads page data

1 Ajax method

JavaScript：

function refresh(param) {
	$.ajax({
		url : '...',
		data : {
			"param" : param
		},
		dataType : 'json',
		success : function(result) {
			//process
		},
		error : function(xhr, status, error) {
			console.error(error);
		}
	})
}

Controller:

	@RequestMapping(value="...",method= RequestMethod.GET,produces = {"text/html;charset=utf-8"})
	public @ResponseBody String getData(HttpServletRequest request,
			HttpServletResponse response, ModelMap model) {
		String param=request.getParameter("param");
		try {
			param = new String(param.getBytes("iso8859-1"), "utf-8");
			//process
			Gson gson = new Gson ();
			return gson.toJson(result);
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace ();
			return null;
		}
	}

Part III Frequently Asked Questions

1 The parameter received by the server is garbled

solution:

	param = new String(param.getBytes("iso8859-1"), "utf-8");

2 The returned result is displayed as garbled characters

solution:

Add produces = {"text/html;charset=utf-8"} in RequestsMapping

Reference: Click to open the link