Struts2 + jquery + json Integration

SpringMVC has been used for a long time and is not very busy recently. So I learned about Struts2. in the past, many times I used JQuery request Json in projects.

Of course, SpringMVC provides several methods to obtain Json, such:

JSONArray json = JSONArray.fromObject(childNode.toArray());String s = json.toString();response.setContentType("text/json; charset=UTF-8");response.setCharacterEncoding("UTF-8");try {response.getWriter().write(s);} catch (IOException e) {e.printStackTrace();}

I use Gson in most cases, and the above example uses json-lib-2.3-jdk15.jar.

Below I will use struts2 + jquery + json integration to get JSON and require lib to include struts2-json-plugin-2.3.7.jar and json-lib-2.3-jdk15.jar.

UserAction:

public String jsonUser() throws Exception{UserService uService=new UserService();List<User> list=uService.findByAll();Gson gson=new Gson();result=gson.toJson(list);for (User user : list) {System.out.println(gson.toJson(list)+"====================="+user.getId()+"--"+user.getName());}return SUCCESS;}

The result is an attribute variable of UserAction:

// Return the result to the Client private String result; public String getResult () {return result;} public void setResult (String result) {this. result = result ;}

Struts. xml:

<Package name = "jsonUser" extends = "json-default"> <! -- Get JSON of all users --> <action name = "jsonuser" class = "com. mzsx. user. action. userAction "method =" jsonUser "> <result type =" json "> <param name =" root "> result </param> </result> </action> </package>

The most noteworthy is the extends="Json-default", <resulttype ="json"> And <paramname ="root">result</param>。

For ease, my js on the front-end page is:

$ (Function () {alert ("START"); $. getJSON ('HTTP: // localhost: 8080/hibernate/jsonuser. action ', function (data) {alert (data );});});

Running result:

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This article from the "Dream think Xi" blog, please be sure to keep this source http://qiangmzsx.blog.51cto.com/2052549/1305058