[英]sending array from Jquery to Struts1 method
My jsp and jquery code as 我的jsp和jquery代码为
var article = new Object();
article.title = "abc";
article.url = "abc";
article.categories = [1,2,3];
article.tags = [1,2,3];
console.log('hi');
$.ajax({
type: 'POST',
url: URL,
contentType:"application/json",
data: JSON.stringify(article),
dataType: 'json',
success: function(result) {
console.log(result);
},
error: function(e){
alert('Error in Processing');
}
});
and my java code as 和我的java代码为
BufferedReader br = new BufferedReader(new InputStreamReader(request.getInputStream()));
String json = "";
if(br != null){
json = br.readLine();
}
// 2. initiate jackson mapper
ObjectMapper mapper = new ObjectMapper();
//mapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
// 3. Convert received JSON to Article
Article article = mapper.readValue(json, Article.class);
Now My Arcticle class is 现在我的Arcticle课是
public class Article {
private String title;
private String url;
private List<String> categories;
private List<String> tags;
//getters and setters
}
Now I am geeting exception as at line 现在我正在排除异常
String json = "";
if(br != null){
json = br.readLine();
}
i get json as follows 我得到的JSON如下
{"title":"abc","url":"abc","categories":"[1, 2, 3]","tags":"[1, 2, 3]"}
actually it should be 实际上应该是
{"title":"abc","url":"abc","categories":[1, 2, 3],"tags":[1, 2, 3]}
I dont understand whts happening and hence i get exception as com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of VALUE_STRING token at [Source: java.io.StringReader@f94ca; 我不明白发生了什么,因此得到了com.fasterxml.jackson.databind.JsonMappingException异常:无法从VALUE_STRING令牌中反序列化java.util.ArrayList的实例,位于[Source:java.io.StringReader@f94ca; line: 1, column: 27] (through reference chain: com.ihexa.common.admin.cabsharing.action.Article["categories"])
行:1,列:27](通过参考链:com.ihexa.common.admin.cabsharing.action.Article [“ categories”])
I solved the answer in following way
我按照以下方式解决了答案
Article user = mapper.readValue(point, Article.class); 文章用户= mapper.readValue(point,Article.class);
System.out.println(user.getRouteFirst()); 的System.out.println(user.getRouteFirst());
Gson gson = new Gson(); Gson gson =新的Gson();
TypeToken> token = new TypeToken>(){}; TypeToken>令牌=新的TypeToken>(){}; List personList = gson.fromJson(user.getRouteFirst(), token.getType());
列出personList = gson.fromJson(user.getRouteFirst(),token.getType());
Article class as
文章类别为
public class Article { 公共类文章{
private String routeFirst;
private String routeSecond;
//setters and getters //设置者和获取者
} }
jsp jquery code as
jsp的jQuery代码为
var article = new Object();
article.routeFirst = newRoute1;
article.routeSecond = newRoute2;
$.ajax({
type: 'POST',
url: '../..//admin/cabsharing/findIntersesctionPoint.do',
data : "point="+JSON.stringify(article),
dataType: 'json',
success: function(result) {
console.log("success");
},
error: function(e){
console.log("error");
}
});
My jsp
will be , 我的
jsp
是
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Calculator</title>
</head>
<script
src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js">
</script>
<script type="text/javascript">
$( document ).ready(function() {
//alert("DOM is ready");
});
function sendJsonData() {
var article = new Object();
article.title = "abc";
article.url = "abc";
article.categories = [1,2,3];
article.tags = [1,2,3];
//alert("JSON string :"+ JSON.stringify(article));
$.ajax({
type: 'POST',
url: "JsonServlet",
//contentType:"application/json",
//data: {point:point},
data : "point="+encodeURIComponent(JSON.stringify(article)),
dataType: 'json',
success: function(result) {
},
error: function(e){
//alert('Error in Processing');
}
});
}
</script>
<body>
<button id="jsonButton" onclick="sendJsonData()">send jdon Data</button>
</body>
</html>
My servlet
will be , 我的
servlet
是
public class JsonServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String point = request.getParameter("point");
System.out.println("Point : " + point );
if(point != null){
ObjectMapper mapper = new ObjectMapper();
try {
// read from string, convert it to Article class object
Article user = mapper.readValue(point, Article.class);
// Conver the Article class object in to the JSON string
System.out.println("Output Json String is :::::::::::> "+mapper.writeValueAsString(user));
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
This is the output
that I got in console, 这是我在控制台中得到的
output
,
Point : {"title":"abc","url":"abc","categories":[1,2,3],"tags":[1,2,3]}
Json String is :::::::::::> {"title":"abc","url":"abc","categories":["1","2","3"],"tags":["1","2","3"]}
Hope this helps. 希望这可以帮助。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.