Struts2 JSONObject的使用

一、jar包

使用之前必须引入所须要的jar包,这里包含Struts2和JSONObject各自所必须的

Struts2:

commons-fileupload-1.2.1.jar
commons-io-1.3.2.jar
commons-lang-2.3.jar
commons-logging-1.0.4.jar
freemarker-2.3.13.jar
ognl-2.6.11.jar
struts2-core-2.1.6.jar
xwork-2.1.2.jar

JSONObject:

commons-beanutils-1.7.0.jar
commons-collections-3.2.jar
ezmorph-1.0.3.jar
json-lib-2.1.jar

PS: 本例Struts2版本号为2.1.6,以上全部jar包在struts-2.1.6lib中都能够找到,

假设以上jar包是东拼西凑的特别是JSONObject,有可能会因jar包兼容性问题而报错。

二、前台代码

<body>
	<form id="myform">
		<table>
			<tr>
				<td>姓名:</td>
				<td> <input type="text" name="name" /> </td>
			</tr>
			<tr>
				<td>性别:</td>
				<td>
					<input type="radio" name="sex" value="1"> 男
					<input type="radio" name="sex" value="0"> 女
				</td>
			</tr>
			<tr>
				<td>年龄:</td>
				<td>
					<select name="age">
						<option value="20">20</option>
						<option value="21">21</option>
						<option value="22">22</option>
					</select>
				</td>
			</tr>
			<tr>
				<td colspan="2">
					<input type="button" id="ajaxBtn" value="提交" />
				</td>
			</tr>
		</table>
	</form>
	<div id="msg"></div>
</body>

<script type="text/javascript">
	$(function() {
		$("#ajaxBtn").click(function() {
			var params = $("#myform").serialize();
			$.ajax( {
				type : "POST",
				dataType: "json",
				url : "RegisterAction.action",
				data : params,
				success : function(msg) {
					if(msg.success == true){
						$("#msg").html("您提交的信息为,姓名: "+msg.name+
						", 性别："+msg.sex+", 年龄："+msg.age);
						alert("success");
					}else{
						alert("error");
					}
				},
				error : function(){
					alert("error");
				}
			});
		})
	})
</script>

三、后台

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONObject;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionContext;

public class RegisterAction {

	private String name;
	private String sex;
	private String age;

	public String register() {
		ActionContext ac = ActionContext.getContext();
		HttpServletResponse response = (HttpServletResponse) ac.get(ServletActionContext.HTTP_RESPONSE);
		response.setCharacterEncoding("utf-8");
		PrintWriter out;
		try {
			out = response.getWriter();
			JSONObject json=new JSONObject();
			json.put("success", true);
			json.put("name", name);
			json.put("sex", sex==null?"未知":("1".equals(sex)?"男":"女"));
			json.put("age", age);
			out.write(json.toString());
			out.flush();
			out.close();
			

		} catch (IOException e) {
			e.printStackTrace();
		}

		return null;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	public String getAge() {
		return age;
	}

	public void setAge(String age) {
		this.age = age;
	}
}

四、Struts配置

<struts>
	<package name="build" extends="struts-default">
		<action name="RegisterAction" method="register" class="com.home.RegisterAction">
		</action>
	</package>
</struts>

例如以下图：

作者：itmyhome

出处：http://blog.csdn.net/itmyhome1990/article/details/41943291

源代码：download