Ajax获取显示Json数据的一种方法
发布时间:2020-12-16 00:36:50 所属栏目:百科 来源:网络整理
导读:本文主要是在java中用json与前台Ajax数据交互 1、首先前台用Ajax,其中注意dataType一定要选择json方式,Action成功返回给页面的Json内容是这样的[{"number":"V006","names":"LiLei"}],可见comment['names']对应 "names":"LiLei",comment['number']对应 "nu
本文主要是在java中用json与前台Ajax数据交互 1、首先前台用Ajax,其中注意dataType一定要选择json方式,Action成功返回给页面的Json内容是这样的[{"number":"V006","names":"LiLei"}],可见comment['names']对应"names":"LiLei",comment['number']对应"number":"V006"。 $.ajax({ type: "post",url:'apply/mystudent.action?',cache: false,dataType : "json",success: function(data){ $.each(data,function(commentIndex,comment){ alert("姓名"+ comment['names']); alert("学号"+comment['number']); }); } });
2、Ajax的URL指向在java的action中mystudent方法,返回的list其实是一个对象Student,包括了names和nunmber字段
public String mystudent() throws Exception{ List list=priceService.query();//调用接口实现类 this.jsonUtil(list); return null; }
// 调用json工具方法,传入参数alist public void jsonUtil(Object accountlist) throws Exception { HttpServletResponse response = ServletActionContext.getResponse(); log.info("JSON格式:" + accountlist.toString()); String returnJson = JsonConvert.returnJson(accountlist); response.setCharacterEncoding("utf-8"); response.getWriter().println(returnJson); } 4、我用的是一种比较新的json包jackson
import java.io.StringWriter; import org.codehaus.jackson.map.ObjectMapper; public class JsonConvert { static String jsonStr; public static String returnJson(Object object) throws Exception{ ObjectMapper objectMapper = new ObjectMapper(); StringWriter stringWriter = new StringWriter(); objectMapper.writeValue(stringWriter,object); jsonStr = stringWriter.toString(); return jsonStr; } } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |