public class BaseAction extends ActionSupport {
private static final long serialVersionUID = 4260238422873356334L;
/**
* 返回json数据
* @param object
* @return
*/
public String jsonOut(Object object){
ObjectMapper objectMapper=new ObjectMapper();
try {
String jsonString=objectMapper.writeValueAsString(object);
HttpServletResponse response=ServletActionContext.getResponse();
response.setContentType("text/json;charset=UTF8");
response.getWriter().print(jsonString);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
public class TestAction extends BaseAction {
private String userName;
/**
* @return the userName
*/
public String getUserName() {
return userName;
}
/**
* @param userName the userName to set
*/
public void setUserName(String userName) {
this.userName = userName;
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public String login() {
Map jsonMap = new HashMap();
if ("admin".equals(userName)) {
jsonMap.put("msg", "登陆成功！！！");
} else {
jsonMap.put("msg", "登陆失败！！！");
}
return jsonOut(jsonMap);
}
}
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package name="struts" extends="struts-default" namespace="/">
<action name="testAction" class="com.acca.action.TestAction" method="login">
</action>
</package>
</struts>
<%@ page language="java" contentType="text/html; charset=utf-8"%>
<!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;">
<title>Insert title here</title>
<script type="text/javascript" src="jquery/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
function doSubmit() {
$.ajax({
type: "post",
data:{"userName":"admin"},
url: "testAction",
dataType: "json",
cache: false,
success: function(data) {
$.each(data, function(key, val) {
if (key == "msg" && val != ''){
$("#mes").html(val);
return false;
}
});
}
});
}
</script>
</head>
<body>
<div id="mes"></div>
<input type="button" value="提交" onclick="doSubmit()">
</body>
</html>
