今天就跟大家聊聊有关Struts2 中json插件如何使用，可能很多人都不太了解，为了让大家更加了解，小编给大家总结了以下内容，希望大家根据这篇文章可以有所收获。
***步：在struts2基本jar包的基础上添加struts2-jsonplugin
在stuts.xml文件中将extends由默认的struts-default改为json-default
<package name="tutorial" extends="json-default">在jsp中引入jquery
<script type="text/javascript" src="js/jquery-1.7.2.js"></script>画页面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <title>新闻公告</title> <link href="css/register.css" rel="stylesheet" type="text/css" /> <script type="text/javascript" src="js/jquery-1.7.2.js"></script> <script type="text/javascript"> jQuery(document).ready(function() { $("#mes_button").bind("click",function(event){ var m_name = $("#m_name").val(); var m_content = $("#m_content").val(); var b_id = $("#b_id").val(); $.ajax({ type: "POST", url: "addMessage.action", data:{"m_name":m_name,"m_content":m_content,"b_id":b_id} , success: function (data) { $("#message_list").append("<div class='message_box' id=''><div class='message_text'><strong>" + data.m_name + "</strong><p>" + data.m_content +"</p></div></div>"); } }); }); }); </script> </head> <body> <div id="main"> <div id="head"> <div class="head_bg"> <div class="head_menu"> <ul> <div class="head_left"> <a href="http://www.cnblogs.com/index.jsp">首页</a> </div> <div class="head_right"> <a href="jsp/news/news.jsp">新闻公告</a> </div> <div class="head_right"> <a href="jsp/news/news.jsp">专业动态</a> </div> <div class="head_right"> <a href="">文章列表</a> </div> <div class="head_right"> <a href="jsp/news/news.jsp">成果展示</a> </div> <div class="head_right"> <a href="">下载中心</a> </div> <div class="head_right"> <a href="">管理员入口</a> </div> </ul> </div> </div> </div> <div class="underhead"> <span class="l"> 正文 </span> </div> <div align="left" style="width: 100%"> <div class="news"> <div class="newscontent"> <h2> <a id="tit" class="tit" href="" target="_blank" mon="a=7">${ins.b_title }</a> </h2> <div class="overcontent"> 时间:${ins.b_date } </div> <div id="content"> ${ins.b_content} </div> <div id="undercontent"> <input id="b_id" type="hidden" name="b_id" value="8"> </div> </div> </div> <div id="message_list"> </div> <div class="message"> <div class="message_title"> 发表评论 </div> <div class="message_user"> 用户名: <input disabled="disabled" id="m_name" type="text" value="houjinxin" name="m_name"/> </div> <form action=""> <div class="message_content"> <textarea id="m_content" rows="5" cols="80" name="m_content"></textarea> </div> <div class="message_button"> <input id="mes_button" type="button" value="提交评论" /> </div> </form> </div> </div> </div> <div> <br/> </div> <div id="foot"> Copyright (c) 2012 Inc All rights reserved 版权所有 by 黑龙江科技学院 <select> <option value="" selected> ----------友情链接---------- </option> <option value=http://www.moe.edu.cn /> 国家教育部 </option> <option value=http://www.pgzx.edu.cn /> 教育教学评估中心 </option> <option value=http://www.hlje.net /> 省教育厅 </option> <option value=http://www.chinasafety.gov.cn/index.htm> 国家安全生产监督管理总局 </option> <option value=http://www.hljmj.gov.cn /> 省煤矿安全监察局 </option> <option value=http://www.chinacoal.org.cn /> 中国煤炭工业网 </option> <option value=http://www.triz.gov.cn /> 技术创新方法 </option> <option value=http://www.cumt.edu.cn /> 中国矿业大学 </option> <option value=http://www.triz.gov.cn /> 中国矿业大学北京校区 </option> </select> </div> <br /> <br /> </body> </html>写业务代码
public void addMessage(int b_id,String m_content,String m_name) { PreparedStatement ps = null; try { String sql = "insert into message(b_id,m_name,m_content,m_date,m_status) values(?,?,?,?,?)"; ps = DBUtils.getConnection().prepareStatement(sql); ps.setInt(1,b_id); ps.setString(2,m_content); ps.setString(3,m_name ); ps.setDate(4, new Date(new java.util.Date().getTime())); ps.setString(5, "1"); ps.executeUpdate(); } catch (Exception e) { e.printStackTrace(); } finally { DBUtils.close(ps); DBUtils.close(); } }在action调用该方法:目的是将留言录入数据库
package com.ele.web.action.message; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.PrintWriter; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.sql.Date; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts2.ServletActionContext; import com.ele.services.MessageServices; import com.ele.services.NewsServices; import com.ele.vo.Ele_messageVO; import com.ele.vo.Ele_newsVO; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport; public class AddMessageAction extends ActionSupport { private String m_name; private String m_content; private int b_id; public int getB_id() { return b_id; } public void setB_id(int bId) { b_id = bId; } public String getM_name() { return m_name; } public void setM_name(String mName) { m_name = mName; } public String getM_content() { return m_content; } public void setM_content(String mContent) { m_content = mContent; } @Override public String execute() { MessageServices msgServices = new MessageServices(); msgServices.addMessage(b_id, m_content, m_name); return SUCCESS; } }看完上述内容，你们对Struts2 中json插件如何使用有进一步的了解吗？如果还想了解更多知识或者相关内容，请关注编程网行业资讯频道，感谢大家的支持。
